NASA releases detailed global climate change projections

The new NASA global data set combines historical measurements with data from climate simulations using the best available computer models to provide forecasts of how global temperature (shown here) and precipitation might change up to 2100 under different greenhouse gas emissions scenarios.

From NASA

NASA has released data showing how temperature and rainfall patterns worldwide may change through the year 2100 because of growing concentrations of greenhouse gases in Earth’s atmosphere.
The dataset, which is available to the public, shows projected changes worldwide on a regional level in response to different scenarios of increasing carbon dioxide simulated by 21 climate models.
The high-resolution data, which can be viewed on a daily timescale at the scale of individual cities and towns, will help scientists and planners conduct climate risk assessments to better understand local and global effects of hazards, such as severe drought, floods, heat waves and losses in agriculture productivity.
“NASA is in the business of taking what we’ve learned about our planet from space and creating new products that help us all safeguard our future,” said Ellen Stofan, NASA chief scientist.
“With this new global dataset, people around the world have a valuable new tool to use in planning how to cope with a warming planet.”

 NASA climate projection for daily high temperature in the year 2100

 under a "business as usual" emissions scenario.

The new dataset is the latest product from the NASA Earth Exchange (NEX), a big-data research platform within the NASA Advanced Supercomputing Center at the agency's Ames Research Center in Moffett Field, California.
In 2013, NEX released similar climate projection data for the continental United States that is being used to quantify climate risks to the nation’s agriculture, forests, rivers and cities.
"This is a fundamental dataset for climate research and assessment with a wide range of applications,” said Ramakrishna Nemani, NEX project scientist at Ames.
“NASA continues to produce valuable community-based data products on the NEX platform to promote scientific collaboration, knowledge sharing, and research and development."

This NASA dataset integrates actual measurements from around the world with data from climate simulations created by the international Fifth Coupled Model Intercomparison Project.
These climate simulations used the best physical models of the climate system available to provide forecasts of what the global climate might look like under two different greenhouse gas emissions scenarios: a “business as usual” scenario based on current trends and an “extreme case” with a significant increase in emissions.

The NASA climate projections provide a detailed view of future temperature and precipitation patterns around the world at a 15.5 mile (25 kilometer) resolution, covering the time period from 1950 to 2100.
The 11-terabyte dataset provides daily estimates of maximum and minimum temperatures and precipitation over the entire globe.

 The year 2014 now ranks as the warmest on record since 1880, according to an analysis by NASA scientists. (other video)

NEX is a collaboration and analytical platform that combines state-of-the-art supercomputing, Earth system modeling, workflow management and NASA remote-sensing data.
Through NEX, users can explore and analyze large Earth science data sets, run and share modeling algorithms and workflows, collaborate on new or existing projects and exchange workflows and results within and among other science communities.
NEX data and analysis tools are available to the public through the OpenNEX project on Amazon Web Services.
OpenNEX is a partnership between NASA and Amazon, Inc., to enhance public access to climate data, and support planning to increase climate resilience in the U.S. and internationally.
OpenNEX is an extension of the NASA Earth Exchange in a public cloud-computing environment.

This animation portrays the flow of atmospheric water vapor around the world.
Water vapor is the most abundant greenhouse gas, but importantly, it acts as a feedback to the climate   (see NASA )

NASA uses the vantage point of space to increase our understanding of our home planet, improve lives, and safeguard our future.
NASA develops new ways to observe and study Earth's interconnected natural systems with long-term data records.
The agency freely shares this unique knowledge and works with institutions around the world to gain new insights into how our planet is changing.

China’s fishermen explain why they think the sea is theirs

 The Tanmen people call their navigation log of the South China Sea “Genglubu”,
which means the “Road Book”.
There are numerous versions of the Genglubu, and it contains centuries of hard-won experience. Every island and its surrounding conditions are clearly described.
Chinese experts believe the navigation logs are clear evidence that Chinese fishermen were the first explorers in the South China Sea.
The people of Tanmen have been fishing in the South China Sea for generations.
Tanmen is a very small fishing town, which has become well known as its residents work on China ‘s maritime frontier.
(CCTV America)

From TheWashingtonPost by Will Englund

One of the challenges for the Chinese government is the growing tensions in the South China Sea. 
China has proposed resolution through dialogue to its neighbors, but territorial disputes continue to arise.
Today’s fishermen not only face the perils of the open sea, but also the danger of an encounter with a foreign patrol boat.

Little boats with noisy engines puttered purposefully down the river and out toward the South China Sea.
Big vessels — ships, really, with three or four decks, and heavy equipment — lay tied up close to the crowded town, looming over the low buildings along the bank.
Then a workhorse of the sea — high-bowed, about 40 feet long, wheelhouse astern — slipped by.
It was heading out for a week, or more likely a couple of weeks, on the open water.
Crewmen, stripped to the waist, lathered up and washed from a barrel of water on deck as their trip began.
The boat cleared the last bulkhead and then let loose with dozens of firecrackers that hung in strings over the sides.

We had arrived by bus: fifteen reporters from a dozen countries, on a tour arranged by the East-West Center of Hawaii.
We were in Tanmen, on the island of Hainan, at the northern approaches to the South China Sea, to talk with fishermen. We were not going from boat to boat looking for someone with tales to tell.
Our local escorts had arranged a meeting on the paved walkway along the south bank of the river.
A delegation of retired fishermen was there to receive us and tell us about their livelihoods.

China and its neighbors are quarreling over the South China Sea, and fishermen play a role in that. Chinese coast guard boats have been driving Philippine and Vietnamese fishing boats away from reefs and fishing grounds that China now claims control of.
We were here to get the Chinese water-level perspective.
Su Cheng Feng is 80, retired now for 11 years.
At first, after the firecracker display died down, he was the most talkative.
He said he didn't meet fishermen from other countries very often in the old days when he was out at sea, before the surrounding countries' territorial claims began to be taken seriously, because their boats were smaller than the Chinese boats, and, frankly, their skills weren't as high.
The sea, he said, was China's traditional fishing ground.
Chinese "fishermen have been fishing in the South China Sea for many, many generations," he said.
"These are our own waters, just as natural as a farmer going to his field."

 China's 1948 nine-dash line map

source : The South China Sea

We asked him about the past.
What was it like before the Communists came to power in 1949, or even during the war, when he was a boy and his father was a fisherman?
He didn't have much to say; nothing special, nobody talked about it.

Wu Shujin, 79, Mai Yunxiu, 79, and Huang Qinghe, 82, listened in, added a word here and there. They had all been captains.
They had fished for wrasse, grouper and mackerel.
They dried their catch on board or sold it to a buyer's boat that would take it back to shore.
They didn't get much help from the government
 (Younger men standing nearby disputed that.)

Then Lu Yuyong suddenly appeared.
He's 51, still active on a boat.
He took over the conversation.
"The life on a boat is very tough," he said.

 Lu Yuyong, 51, looks up from a chart of the South China Sea on which he has placed a traditional Chinese compass. (Will Englund/The Washington Post)

He brought out a pink plastic bag and unwrapped from it a traditional Chinese compass.
It's one of the four great Chinese inventions, he said (along with gunpowder, paper-making and printing).
Suddenly he was on his knees on the blacktop, unrolling a nautical chart of the sea.
He was showing us how to use the compass on the chart, and having a little trouble, most likely because it had traditional markings on it and not the 360 degrees of a modern one.
Su got down with him, and all the reporters and local hangers-on crowded around.
Lu said he was glad the Chinese government is building up some of the islands in the sea; he has lost three family members in storms who had nowhere to go to and no one to help them.
Permanent occupation on some of the islands could save lives, he said.
But when fishermen from other countries dare to fish the South China Sea, he said, "they're invading our waters."
"We could go all the way to Australia if we wanted to," he said.
"But we don't. That's not our ground. It's not about loving or not loving your country. It's about fishing your own waters."

www.genglubu.cn

Chinese fisherman, he said, were the first to discover the islands of the South China Sea.
"And as opposed to other countries, we are civilized," he said, again mentioning the compass as one of the four great inventions.
He rolled up the chart, then got out a piece of paper and drew his own map of the sea, which he labeled the "Ancestor Sea."
He talked about the annual celebrations in Tanmen for the Brotherhood of the 108 (also known as the 108 Stars of Destiny, or the Outlaws of the Marsh), demonic overlords from a 700-year-old novel who were banished, repented and were reborn as heroes.
What upstart nation, he seemed to be asking, could lay claim to history here the way China can?

Links :

• China.org : Tanmen fishermen fish in dangerous waters 
• TheDiplomat : Rethinking China’s Maritime Militia Policy

Explore life beneath the waves in honor of World Oceans Day

Google and its partners are committed to using technology

to better understand and protect the ocean. 

From Google_LatLon by Jenifer Austin and Brian Sullivan, Google Ocean Program

Covering more than 70 percent of the Earth’s surface, the ocean remains one of the most uncharted and undiscovered ecosystems on the planet.

Home to the majority of life on Earth, the ocean acts as its life support system, controlling everything from our weather and rainfall to the oxygen we breathe.
Yet despite the ocean’s vital importance, the ocean is changing at a rapid rate due to climate change, pollution, and overfishing, making it one of the most serious environmental issues we face today.

Walk the coastline of Larsen Bay, Samoa, home to some of the most pristine coral reefs in the Pacific

Mapping the ocean is key to preserving it.
Each image in Google Maps is a GPS-located digital record of these underwater and coastal environments, which can be used as a baseline to monitor change over time.
This comprehensive record of coral reefs showcases the beauty of these ecosystems and highlights the threats they face, such as the impact of increasing storms in the Great Barrier Reef and of rising water temperatures, factors causing the reefs to bleach white.

 These two images taken just one year apart, demonstrate reef deterioration from ocean warming.

With just one click, you can swim underwater alongside some of the most wondrous and exotic creatures, including great white sharks in Australia.

Google recommends you check out these amazing “street views” of ocean life:

• Dive with giant ocean sunfish (Mola mola) and giant parrotfish off the coast of Bali.
• Swim underwater alongside schools of giant travely in Mexico.
• Do the backstroke with humpback whales in the Cook Islands.
• See the breathtaking beauty of sea turtles in Timor-Leste.
• Search the ruins of shipwrecks in Aruba.
• In American Samoa, you can go for sunset walk along Ofu Airport Beach, or walk along Ofu beach, known as one of the most scenic beaches in the world.
• In Chagos Islands, you can tour Ile du Sel, a tiny island vegetated with a thick forest of coconut palms, and explore the famed bird nesting habitat of Grande Ile Bois Mangue.

Mola mola, the world’s heaviest bony fish, in Crystal Bay, Bali

 Two humpback whales swimming in the Cook Islands in the South Pacific

As the ocean changes, we must change with it by creating new technologies, to help document the state of the ocean today and how it changes in years to come.
Working closely with XL Catlin Seaview Survey, we’re announcing a select group of new partnerships for our underwater Street View program to map and publish more imagery of our ocean and water systems for the world to understand and explore.

• NOAA’s Office of National Marine Sanctuaries: Expanding our current partnership to bring unprecedented access to American marine protected areas
• Reef Check: Engaging and training volunteer citizen scientists to participate in ocean mapping and data collection
• Blue Ventures: Developing locally-managed marine areas for biodiversity and the benefit of coastal people throughout Madagascar and the Indian Ocean
• Our World Underwater Scholarship Society: Providing a program of firsthand underwater-related experiences to selected scholars across the world
• GUE’s Project Baseline: Empowering a global network of highly skilled SCUBA divers to create a lasting visual legacy of underwater conditions in oceans, lakes, rivers, springs, and caves all over the world

In addition to underwater and coastal Street View imagery, Global Fishing Watch, developed in partnership with nonprofits SkyTruth and Oceana, is producing the first public and interactive view of industrial fishing at a global scale.
With so much of what happens on the ocean going unnoticed, Global Fishing Watch will aim to empower governments, the seafood industry, research institutions and the public with new tools to better inform sustainable practices and management policies.

This World Oceans Day, we hope that you’re inspired to learn more about ocean change.
So dive into the deeps of the sea and become engaged to protect the ocean and understand how it supports us, so that all of us can better support it in return.

Links :

• GeoGarage blog :  Google SeaView : Ocean survey launches on Great Barrier Reef / Dive into the Great Barrier Reef with the first underwater imagery in Google Maps / Caribbean has lost 80% of its coral reef cover in recent years / Take a virtual swim with the dolphins on protected Brazilian islands 
• Google LatLon : Dive in to the heart of the Coral Triangle in Asia, home of the richest coral reefs on Earth

Yacht entering harbour in rough seas

Very skillfull helmsman on this Delphina 37'

harbour entrance of Savaneke on Bornholm Island, part of Denmark in the Baltic.

 Bornholm island with the GeoGarage platform

Links :

• GeoGarage blog : Yacht capsizes in surf at Spanish port of Zumaia

The Golden Gate bridge from the air

The Golden Gate Bridge from the air. from Makai Creative

Explainer: how do you measure a sea’s level, anyway?

ESRI : Mean Sea Level, GPS, and the Geoid

From The Conversation by Gary Griggs

There are about 330 million cubic miles of water in the world oceans today, 97% of all the water on the planet. Early in our planet’s 4.5 billion year history, water from the atmosphere and from the interior of the Earth gradually collected in the low areas on the planet’s surface to form the ocean basins, accumulating salts along the way.

 OK, but which sea’s level? And how do you know what it is?

Wally Gobetz, CC BY-NC-ND

The level of the ocean around the Earth, and therefore the location of the shoreline, are directly related to the total amount of water in the oceans, and also closely tied to climate.
As climate changes, so does sea level.
Throughout the history of the oceans, which goes back about 3.5 billion years, give or take a few million, climate has constantly changed and, in response, sea level has gone up and down. As seawater warms, it expands and sea level rises.
As the Earth warms, ice sheets and glaciers melt and retreat, adding more water to the oceans, which raises sea level.

Sea level change between 1993 and 2008 NASA/JPL

People have been keeping track of sea level, or the elevation of the oceans, for about 200 years.
Until fairly recently, this was done with tide gauges, which are water-level recorders anchored to some structure along the coastline.
It might be a wharf, a concrete breakwater or some other solid structure that is stable over long periods of time.
The oldest tide gauge in the world is on the coast of Poland and was installed in 1808.
In the United States, there are two tide gauges that have been in operation since 1856, one in New York and one in San Francisco.
There are many others as well, but most of them are much newer; many were set up over the past 50-75 years.

Installing a tide gauge in Alaska. 

NOAA Photo Library, CC BY

A tide gauge is essentially a large pipe inserted into the ocean, which has a float inside that moves up and down as the water level changes.
As the tide rises and falls each day, these gauges record those changes in water level, day after day, year after year.
These instruments were first set up to provide accurate information on water depths so ships could enter and leave ports safely.
As time went on, however, it became clear that sea level recorded on these instruments was rising globally.

 A tidal gauge, ready to be installed

Each of these official tide gauges keeps track of sea level at a particular coastal location.
Many coastal areas are not stable, however.
Some are sinking (such as New Orleans or Venice), and some are rising (Alaska and Scandinavia, for example).
Each tide gauge keeps track of how sea level is changing relative to the land on which it is anchored.

 NOAA tide gauge data for Grand Isle, Louisiana (near New Orleans), where sea level is rising relative to the land at 9.03 mm/yr (36 inches/century) due to subsidence of the Mississippi delta area. NOAA

Even though sea level rose around the world at a rate of about 1.7 millimeters per year over the last century (nearly seven inches per century), because some gauges are on coasts that are rising and some on coasts that are sinking, these local sea-level rise rates will vary.
In parts of Alaska, the land is rising faster than sea level, so the tide gauge actually records a drop in sea level relative to the land.

NOAA tide gage record for Juneau, Alaska, where local sea level is dropping relative to the land at 13.16 mm/year (4.3 feet/century) due to uplift of the coastline. NOAA

These geographic variations were resolved in 1993 when two satellites were launched that use radar to measure the level of the ocean very precisely from space.
This high-tech approach eliminates the problems of land motion on Earth and has given us a new global sea-level rise rate over the past 22 years of 3.2 millimeters per year, the equivalent of 12 inches per century.

Global mean sea level as measured by satellite. University of Colorado/NASA

Elevations on land, contour lines on maps and depths on nautical charts are based on the long-term average of sea level.
This is complicated by the fact that sea level around the world at any instant is not the same, due to local variations resulting from differences in water temperatures, currents, atmospheric pressure and wind.
In order to bring some order to all of these geographical variations, and to provide a constant point of reference, a datum or base level was established based on averaging out the elevation of sea level from many tide gauges over an extended period of time.
This datum is now called the North American Vertical Datum (or NAVD) and is the elevation (close to mean sea level) on which all map elevations are based.
So if a wharf, highway or building is “20 feet above sea level,” it is 20 feet above this official North American Vertical Datum.

Links :

• Eyeontherise : Ever wonder whether your home would be affected by rising sea levels? Florida International University has launched a new web app called Sea Level Rise Toolbox that shows the possible impact of a 6-foot rise in sea levels. After downloading the free app, it allows users to type in their home address, then click on an orange tab to see the projected increase of water levels.

Google's global fishing watch is using 'manipulated data'

Source: Windward

From Wired by Liat Clark

Last week, Google, Oceana and SkyTruth announced they were launching a battle against overfishing everywhere.

A noble pursuit, Global Fishing Watch combines interactive mapping technology and satellite data with the all-important Automatic Identification System (AIS) transmissions every tanker, passenger ship and commercial vessel above a certain size is mandated by the UN to send.

Global Fishing Watch then visualises the routes taken, to show when a fishing boat strays into or lingers in waters it shouldn't.

The only problem, maritime analytics company Windward tells us, is that any vessel engaging in illegal activities is gaming the system and manipulating AIS data.

We can't rely on what we're seeing.

"Until 2012, AIS data was super reliable because it wasn't commoditised. Nobody had it, so no one needed to clean the data or check it," Ami Daniel, a former naval officer and cofounder of Windward, tells WIRED.co.uk.

 MarineTraffic

"Two years, there was suddenly so much data out there, so many open source portals like marinetraffic.com providing free access to [vessel positions] for everybody.
People understood they were being looked at.
Once that happened, spontaneously different industries started to manipulate the data."

According to a report by Windward that looked at AIS data from mid-2013 to mid-2014, there has been a 59 percent increase in GPS manipulations.
From July 2012 to August 2014, that data also showed:

• Final ports of call were reported only 41 percent of the time
• 1 percent of all ships used a fake identifying number (IMO) over the past year
• A quarter of all vessels switch off their AIS at least 10 percent of the time

Windward reveals enhanced MARINT solution (IMDEX Asia)

Windward is crunching AIS data -- the more than 100m shipping data points produced every day -- and satellite imagery with its algorithms, taking into account the aforementioned manipulations and comparing these against past behaviours, home ports and vessel ownership, as well as general trading patterns and economic profiles.
Its software calculates how urgent the erroneous data stream is, then alerts its clients to the fact.
These include oil and gas companies in South America and West Africa and governments in South East Asia and West Africa.
Interested parties include navies, as well as national intelligence agencies.
There are many reasons a vessel would choose to manipulate its AIS transmissions.
At the most serious end of the spectrum are the illegal activities.
"The UN found a super strong connection between fishing and smuggling and terrorism," Daniel tells us.
"Fishing vessels have defacto authorization to enter any point they want in the world because the fishing industry is a global one. So it's not irregular for a vessel to go from Africa to Europe. Yet everything they do in open seas in between is unaccountable."
Human trafficking and smuggling are two of the most worrying reasons for manipulations.
Then there are plenty of economics ones -- the vessels Google and co are trying to track, which are engaging in overfishing or fishing in restricted regions for profit.
According to Windward's report, Chinese fishing vessels account for 44 percent of all GPS manipulations.
"They want to fish wherever they want," says Daniel.

 An illustration of AIS data manipulation in action, pertaining to GPS manipulation.

Source: Windward

It's also well known that there is a high demand for things like rhino horns and ivory in China, and that that demand is a key reason the illegal export trade in Africa has accelerated in recent years.
It's interesting, then, to look at one of the visualisations Windward has created from its analysis.
It shows a vessel turning on its AIS data somewhere off the south coast of Mexico.
It then reappears near Chile, then bizarrely crops up in the middle of Antarctica, well and truly landlocked, before curving up and heading to China.
It's so clearly doctored, but what's interesting is how it was doctored.
Daniel says a common tactic among crews is to log GPS stats that show you're a few thousands kilometres south or north of where you actually are.
Looking at this particular example, the vessel heading for China appears to have made a route that perfectly mirrors the outline of South Africa, just a few thousand kilometres south.
Daniel says crews have been "crossing the cables", or physically connecting them to a computer and using software to manipulate the GPS coordinates.
There's plenty that can be manipulated.
The data sent through AIS includes longitude and latitude, speed, course, rate of turn, depth, its unique signifier (IMO) and more.
Each manipulation might suggest a different reason, and that's what Windward is working to reveal with its algorithms.
Altering the depth, for instance, betrays that you are carrying either less or more (in weight) than you should be, and could mean a number of things.

Animated satellite map showing every large commercial fishing vessel

 in the Atlantic Ocean between 2012 and 2013.

 Same map, only centered on the Pacific Ocean.

Map breaking vessels down by country of origin.

Spanish boats are in blue. Japanese boats in green. Korean boats in red

(All images courtesy of  Vox )

Fishing vessels around South Georgia and the South Sandwich islands

Photo: Global Fishing Watch

The existence of something like Global Fishing Watch, is inarguably a good thing.
It isn't claiming to be battling human trafficking accurately, but shedding light on what is a huge global issue.
It focuses purely on fishing vessels, with its first interactive map featuring 3,125 ships, and their 35 million data points collected over 2013-2014.
Oceana has referred to the tool as "groundbreaking", and it is certainly helping shed some light and transparency on the problem, the point being vessels are incentivised to show they are fishing appropriately and where they should be.

The issue is, Global Fishing Watch is absolutely using AIS for a mission in was never prepared for. When the UN agency International Maritime Organisation mandated that every vessel turn on and use its AIS in 2002, it was purely for safety reasons.
The data is transmitted back and forth between vessels that might be near each other, to ensure collisions are avoided -- and it's doing a good job of this all these years.
In these instances, perhaps when your vessel is traversing a strait, the longitude and latitude is transmitted every few seconds.
Many of the other data points are transmitted intermittently and manually.
As Daniel puts it, "you don't have to be sophisticated at all in many cases -- you just punch in the code".
So despite AIS being mandated, the world's oceans are essentially operating on what Daniel describes as "an honour system".

The obvious issue facing Global Fishing Watch is that the very vessels overfishing the waters are the ones that will be working to hide their tracks.
In fact, it will only be the inadvertent errors made by commercial and government vessels, and the very foolish behaviour of oblivious ill-doers, that will be caught out by Global Fishing Watch.
It is only watching those that want to be seen.

In an interview with our sister site, WIRED.com, Oceana's VP for the US, Jackie Savitz, admitted that false reasing were an issue, but that its model "can detect erratic AIS transmissions".
"If we see pings from a vessel every hour for a month, then it goes silent, but suddenly comes back on weeks later, we can pick that up and possibly trigger enforcement against them for not transmitting as they are supposed to."
The problem, as Windward points out, is that crews are becoming more savvy to the various AIS manipulations they can make -- it's not as easy as looking for those switching off any more.
In fact, few would use this tactic as it is a rather obvious red flag.

 Windward’s maritime surveillance system (MarInt) shows a Japanese fishing boat that entered the Exclusive Economic Zone (EEZ) of Angola, allegedly without permission.

So how can we even begin to stem this problem?
Windward could be just one part of the solution, and in years to come as satellites become more cost effective, and there are more of them, we will have better data to attack the problem.
In the meantime though, it's more about raising awareness to keep pace with those becoming savvy enough to game the system on a daily basis.
One stat might go a way in helping that push.

The Windward report compares the fact that 1 percent of ships are using fake IMO numbers (a 30 percent rise on the previous year), to airport security.
1 percent is equal to several hundred vessels being "'in disguise' at any given time", which is "akin to having over 1,000 people going through John F. Kennedy International Airport each day using fake IDs".
In the context of airport safety and customs regulations, that figure would be staggering and totally unacceptable.

Apply it to the open seas and suddenly the limits of our acceptance, is vastly lowered.
Of course port authorities have a certain degree of responsibility and control.
But just as we discovered when Ebola screening was first suggested for airports and ports, it would be virtually impossible to check every ship that comes to UK shores.

One way of bringing more attention to the problem, is to get the world of finance involved.
And that's exactly what Windward hopes to do.
Daniel points that 90 percent of the world's trade happens at sea, and most of our commodities are transported that way.
And while crude imports in 2013 were estimated to be worth around $2,823 billion (£1.8bn) -- half of which were transported by sea -- Windward points that "the financial trading on this volume is estimated to be nine times larger than the transport value".
Financial trading models take into account things like commodity flows, and the false data could be leading to costly distortions.
One of the reasons oil tankers might hide their positions or depths, Windward postulates, would be to impact global oil prices.

 Ramtin’s journey to Malaysia

Hamoda K’s journey to Karachi
As the two images show, the MMSI number of the Hamoda K and the Ramtin (Volga) match.

Iranian tanker hacks AIS to disguise itself off Singapore

(courtesy of gCaptain)

The reach of this problem is vast and winding.
As such, Daniel believes he and his 30-strong team has found the last "Wild West".
He refers to this phrase over and over, and it's clear why.
The technology revolution has crept up on every sector, its wildfire turning even the most traditional of industries on its head.
Considering the planet is made up of 70 percent water -- water being traversed by more than 200,000 AIS-fitted vessels everyday, from the smallest of fishing boats to cruise liners -- the fact that an accurate representation of activity on our seas escapes us, seems incredible.
"It's one of the reasons I get up in morning everyday," says Daniel.
"This isn't just another app -- this is something huge. This is all ocean trades. No one knows what's happening there, and therefore we think it's one of the last analogue domains waiting to be digitised. There's going to be a very big change. But we have to do it well, with the right data -- or there will only be more trouble."

AIS is the industry standard -- it's reliable for the purpose it's designed for.
For everything else, we need to make sure we are gaming the system too.

Links :

• GeoGarage blog : Loose blips sink ships: leaky communications threaten marine vessels / Concern over 'high seas security loophole' / Superyacht GPS spoofing experiment on the high seas / How the International Space Station and Automatic Identification System (AIS) saved a man lost at sea / Can technology end pirate fishing? / Boom in satellite ship tracking / Space station keeps watch on world's sea traffic  / Rising fraud in the high seas / The plan to map illegal fishing from Space / Monitor illegal fishing weirs in the Persian Gulf / Smile! Satellites can see your illegal fishing from space / How Google Earth is busting Persian Gulf nations for overfishing / West African fishing communities drive off 'pirate' fishing trawlers / Google can track ships at sea ; detailed maps planned of sea bottom / Catapult and Pew Charitable Trusts launch pioneering technology to help end illegal fishings
• Bloomberg : Heard the one about the Chinese ship that sailed on land? No joke 
• Orbcomm : Satellite AIS Data Steers Another Vessel to Illegal Fishing List

How ‘tweeting’ seals are helping us discover the ocean’s mysteries

World map showing the distribution of CTD profiles (i.e. vertical profiles of temperature and salinity) currently available in the MEOP-CTD database.

From The Washington Post by Elahe Izadi

To gather information from some of the harshest waters on the planet, scientists turned to an unlikely source: An army of massive seals equipped with special sensors.

Southern seal tagged with a CTD-SRDL on South Georgia. (University of St. Andrew)

photo : Iain Field

Since 2004, more than 1,000 southern elephant seals sporting non-invasive sensors have traversed the world and sent data back to researchers via satellite.

 A CTD-SRDL tag, featuring a miniaturized CTD on top of the core unit, with the microcontroller below, the wet/dry sensor on the frontside, the battery on the rear, and the Argos antenna pointing  

All that information from the seals' travels produced about 400,000 environmental profiles, making up one of the largest databases of polar oceans, according to University of St. Andrews, whose Sea Mammal Research Unit helped design the sensors.

 Schematic overview of the methodology used to produce oceanographic data using instrumented marine mammals. Adapated from Roquet et al. (2014)

"The information sent back to us gives us details about the seal’s immediate physical environment," Lars Boehme, a lecturer at the University of Andrews, said in a statement.
"It’s like tweeting."
The online portal storing the data, Marine Mammals Exploring the Oceans Pole to Pole, launched Monday.

 photo : Clive McMahon

Southern elephant seals, massive creatures measuring more than 20 feet long and weighing up to 8,800 pounds, live in sub-Antarctic and Antarctic waters.
For this project, researchers caught and measured seals, then attached the sensors to their heads.
The devices fall off when the animals molt.
The battery-powered monitors, called CTD-SRDL, last up to a year and measure salinity and temperature.
Seal dives, which can go as deep as 6,000 feet, feed information to the environmental profiles, AFP reported.

Aside from the novelty of getting a bunch of giant seals to collect data from the ocean, "of more general importance is that data from these remote and inaccessible places now gives us a much clearer picture of the state of the world’s oceans," Mike Fedak, a University of St Andrews biology professor, said in a statement.
"We have since shown that data from these far-flung locations is critical to understanding the broader state of the Global Ocean."
Fedak told AFP that the data can be used for things such as tracking the movement of glaciers.
"They are taking data from places where there has been virtually no data before," he said.

 Corresponding seal track.

Kuerguelen Islands can be seen on the upper left corner,

as well as the Heard Islands just below.

Researchers involved in the project said that "sustained observations" are required to closely monitoring polar oceans.
"Changes in the polar oceans have global ramifications and a significant influence on weather and climate," Boehme said in a statement.
MEOP is a consortium of 11 countries and some scientists have already had access to the data for research on the temperature and salinity of oceans.
Some of the information collected by the seals has been used in weather forecasting and by scientists studying how animals respond to changes in ocean conditions.

Links :

• GeoGarage blog : Wild seals work as oceanographers’ lab assistants 
• Phys : Army of sensor-equipped seals collects distant ocean data 

Tuna fish are led through a complex maze of nets until they reach the 'death chamber': Sardinia's controversial 'La Mattanza' blue fin tuna killing ritual going back 600 years

No man can hand-fish blue fin tuna alone, meet the men who capture the giant fish

using what they call the "chamber of death".

From DailyMail

• Dozens of expert fishermen trap, impale and slaughter the fish in Sardinia
• Bloody practice has been banned everywhere else in the Mediterranean
• But locals and fisherman in Carloforte consider Girotonno festival sacred
• They claim it is 'privileged death' for fish which sell for $500 per kilogram

In the picturesque seaside village of Carloforte in Sardinia today fishermen will stage the same brutal ritual they have for 600 years - when rare bluefin tuna are guided and trapped in a complex corridor of giant nets and slaughtered.
The tuna are directed by fishermen through three miles of nets in the controversial Girotonno festival which climaxes in a frenzied act of violence known as 'mattanza' - or the killing.
They wait for 30kg fish to naturally swim into a complex system of underwater nets anchored near the shore, arranged into smaller and smaller rooms until the fish reach the 'death chamber'.

 Ritual: A team of expert fisherman descend on the town of Carloforte in Sardinia every year for the bloody festival of Girotonno, where tuna fish are trapped and killed

Trapped: Fishermen use the huge nets to pull the 30kg fish out of the water before impaling them on spikes

There the fish thrash about in the water before they are pulled from the water on the end of huge hooks and slit open with knives and allowed to bleed to death.

The disturbing spectacle brings loud cheers from the spectators and triumphant fishermen - as the water turns red.

Gruesome: The climax of the festival is known as 'mattanza' - or the 'killing' - where the fish are caught and killed by skilled fisherman as spectators cheer

Fatal: The massive fish swim naturally into a complex series of underwater nets carefully placed in the town's tuna factory

La Mattanza, as it is known, has become an a sacred annual ceremony for the people here in Carloforte dating back to the 15th century and tuna fishing is the bedrock of the local economy.

La Mattanza in the movie

Stromboli - Roberto Rossellini (1950)

Although the practice has been criticized by animal rights charities and has been banned in other fishing ports in the Med.

 Lethal: The unfortunate ones swim into an area known as the 'death chamber' - the only place where the net is below the fish, allowing the fisherman to yank them above the surface

Bloody: The practice is considered so brutal, it has been banned everywhere else in the Mediterranean

A prayer is chanted at the beginning and end of the ritual to thank the Lord for the fishing.
The tuna meat is then cleaned and either canned straight away or sold fresh.
The Girotonno - or Tuna Go Round festival - begins today and attracts hundreds of amateur foodies and professional chefs from all over the world.

Tradition: Even though the ritual has been banned everywhere else, the locals and fishermen consider it sacred

Renowned: The Girotonno - or Tuna Go Round festival - attracts hundreds of amateur foodies and professional chefs from all over the world

Slaughter: Crowds cheer as dozens of fishermen pull the fish out of the water (pictured) - killing them before they are either canned or sold fresh

Over 50 Michelin-starred chefs from six different countries compete to create the best traditional signature dishes and innovative twists of the red tuna delicacy.
'It can be quite gruesome, it's not for everyone,' admits the manager of the Carloforte diving centre which organises guided boat tours for the bloody ritual.

 Ceremonial: Before the hunt begins and after it is over, a prayer is chanted to thank the Lord for the fishing

 Killing: Once they pull the fish out of the water, they pierce a spike through their heads and slice them open while they still twitch

Dangerous: On ordinary days, spectators can safely dive inside the 'death chamber' to witness the whirling tuna fish but doing it during 'mattanza' (pictured) risks being severely injured

Girogio Siotto adds: 'You need a strong stomach but it's great as the festival is the only moment you can experience the trapping.'
On ordinary days, spectators can safely dive inside the 'death chamber' to witness the whirling tuna fish but doing it during 'mattanza' risks being severely injured.
The 'gore' is what makes Carloforte's red tuna so special, according to the owner of the tuna factory where the killing takes place.
Guiliano Greco is the descendant of the rich Genoese merchants who colonised the isles in the 1750s.
He says: 'The tuna's flesh must be cut to make bleed immediately, as soon as the fish is out of the water.
'The bleeding preserves the meat and it's the best way to have a top quality gourmet product on the shelves.

Our tuna was once "poor" fishermen food.
Today it's exported fresh worldwide as a very expensive product, mainly in Japan'.
The town's Mayor said he is proud of his fish and of the way it is canned, claiming it makes Carloforte's tuna 'unique', which is why it is exported to Japan and the rest of the world in enormous quantities as sushi or sashimi.
Marco Simeone added: 'It's killed before it even mates, so it's particularly fat due to the untouched sperm and eggs.
'That's why the Japanese are our biggest clients. They buy tuna here and re-sell it at home as sashimi and sushi at $500 per kilo.'

 Grim: The manager of a diving centre which arranges boat tours of the killing says 'it can be quite gruesome, it's not for everyone'

Delicacy: But the town's Mayor says he is proud of the ritual, the fish and of the way they are canned - claiming it makes Carloforte's tuna 'unique

Sardinians are renowned for eating 'porcheddu' - or roasted piglets and people in Carloforte are no exception - and not just because they slaughter the tuna like pigs.
Simeone adds: 'Tuna is our sea pig. We keep every single part of it, nothing is wasted, even the bones are used to make fertiliser.'
Animal welfare experts have criticised the festival.
Katherine van Ekert, president of Sentient, the Australian institute for animal ethics, said the tuna could feel pain when they are killed in this way.
'The suspension of the tuna's body weight is expected to cause pain and stress to the animals, as too would the tearing of their tissues as a result of gravity working against the hook.'
But to islanders, La Mattanza is a sort of 'privileged death' for the fish.

Traditional tuna fishing in Mediterranean :

Mattanza in Italy, Almadraba in Spain

Greco believes the practice to be a respectful way of killing tuna and that it's less cruel than in the past, when the fish was snagged by dozens of hooks.
'First, we only end up fishing ten per cent of the tuna. Second: tuna dies quickly, it's less stressful for the fish as it suffers less.
'All other ways of fishing slaughter more fish and damage the sea environment, we should be given permission to do more mattanze and Europe should increase our share of fishing quota.'
Fishermen hope to capture some 100 tuna fish during the Girotonno festival, but it depends on weather and sea conditions and on the chance that some fish might escape the net.
Chef Luigi Pomata says tuna is a life tradition, adding: 'It's our culture. We have survived thanks to tuna.'