Wednesday, June 14, 2017

Can ocean science bring Cuba and the United States together?

U.S. Navy diver off the coast of Guantanamo Bay, Cuba.

From The Conversation by Jorge Alberto Angulo-Valdes

Cuba is the ecological crown jewel of the Caribbean.
It harbors thousands of the region’s endemic species and about half of its coastal ecosystems.
It is rare to find comparable ecosystems or such rich biodiversity anywhere in the Caribbean, and perhaps in the Western Hemisphere.

Cuba also is inextricably linked to its neighbor countries, especially the United States.
These two nations have been adversaries for over 60 years, but their common backyard is an ocean filled with limited shared resources.

Since December 2014, when then-President Barack Obama ordered the restoration of diplomatic relations with Cuba, both governments have taken steps to improve cooperation.
They include agreements to work together to protect some of the Caribbean’s most important coral reefs and marine sanctuaries.
Now, however, the Trump administration reportedly is planning to slow or halt at least some U.S. engagement with Cuba.

I am a Cuban marine biologist and have had the opportunity to be part of U.S. academia and facilitate scientific partnerships between the two countries.
Scientists on both sides are very interested in working together, and I believe that we owe it to nature and people on both sides to keep this door open.

 Cuba nautical charts with the GeoGarage platform

Connected waters

Cuban waters provide vital spawning and nursery grounds for snapper, grouper and other marine species that are commercially important in the United States. Cuba is also a major stopover point on migration routes for many North America birds.

When I tagged and tracked longfin mako sharks with colleagues from Florida, we found that they ranged into territorial waters around Cuba, the United States, the Bahamas and Mexico – showing clearly just how connected our waters are.
Other scientists have reported similar results for species including manatees, sea turtles and fish larvae.


 Maximum likelihood tracks for two longfin makos and the locations where they were. tagged and where their pop-up tags were released: 
(A) the first longfin mako, LFM1, was tagged April 28, 2012 off northwest Florida; 
and (B) the second longfin mako, LFM2, was tagged February 14, 2015 off Cojimar, Cuba. 
Fish. Bull. 115:104/Mote Marine Laboratory.

Since the U.S. government relaxed restrictions on American travel to Cuba in 2015, Cuba has experienced an explosion in international tourism, which is projected to continue.
Expanding tourism and related development, combined with longstanding poor management of reefs and fisheries and economic scarcity, could have major impacts on the waters that link our countries.

Although Cuba’s coastal habitats are in fairly good condition, its fish populations are heavily exploited and threatened by commercial and private subsistence fisheries.
Over 80 percent of its fishery resources are in critical condition.

In many coastal communities, for example, small private fishermen depend on fish for subsistence and also supplement their incomes by selling fish on the black market.
Pressures on targeted species such as tarpon and bonefish are believed to be substantial, but currently no data are available to quantify the extent and magnitude of impacts on fish populations or ecosystems.

Cuban agriculture does not presently rely on extensive use of synthetic fertilizers, pesticides or other agricultural chemicals.
This means that pollution and eutrophication (overfertilization, which produces large blooms of algae and “dead zones”) may not be major threats to its fisheries and marine ecosystems.
Nonetheless, isolated and significant pollution sources, such as food processing industries and oil refineries, affect many important bays and harbors around the island.
Their impacts on marine ecosystems currently are not well-understood or well-documented.

Cuba has established 108 marine protected areas that provide some level of protection to nearly 23 percent of the shallow waters around the island.
However, many of them are at risk due to funding shortages, lack of trained staff, poor enforcement and inefficient management.
In 2015 the United States and Cuba agreed to create partnerships between sanctuaries in the two countries, so that we can share data and ideas for conserving these sites.


Fishing trawler in Cienfuegos, Cuba. Pixabay

Cuba at a crossroads

Our common ocean is an essential resource for the United States and Cuba, and any action (or inaction) by one country will significantly impact the other.
Scientific collaboration to protect marine resources will benefit both nations.

Cooperation between scientific organizations in Cuba and the United States dates back to the 19th century, and has helped to maintain dialogue even during the most difficult phases of U.S.-Cuban relations.
Cuban and American scientists have worked together to address sensitive environmental issues such as shark conservation, conduct state-of-the-art research and train Cubans to do research and conservation.

At times, however, bureaucratic hurdles and misunderstandings on both sides have arisen, and government decisions or indecision have blocked good projects and ideas, such as importing and exporting equipment, organizing research expeditions and field courses, and collecting and exporting samples.

Cubans are facing very difficult economic times, and many are struggling to feed their families. In such circumstances they are unlikely to see environmental protection as a high priority.
Cuba is at a crucial decision point, choosing between an environmentally friendly development path like Costa Rica’s or a destructive Cancun-style model.

Joint Cuban-American scientific ventures should reach out to the public in both countries with a strong message about preserving our shared ocean resources.
They should also invest in communities to change environmental perceptions and attitudes.
We need to create effective incentives, increase exchanges of people and ideas, and improve communication about these issues.


Commercial finfish fishermen, Isla de la Juventud, Cuba.
Jorge Alberto Angulo Valdes, Author provided

More academic partnerships

Academia has a key role to play in this effort. U.S. colleges and universities should explore models that offer more opportunities to Cuban scientists, and Cuban schools should do the same.
U.S. schools are already increasing their presence in Cuba through field courses that allow students to experience Cuban realities.
Other U.S. organizations such as the Environmental Defense Fund have also expanded ties with Cuban institutions and people.

Unfortunately, this process is working in only one direction.
It is much more difficult for Cubans to visit the United States, thanks to restrictions on both sides.
We need opportunities for groups of Cuban students to come to the United States for field courses and other academic programs.

Cubans and Americans have more in common than anyone may think.
Our nations are united by nature, history and cultural links that have overcome politics.
The timing is right for scientists on both sides to make a strong case in favor of normalization over confrontation, and a better future for both countries.

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Tuesday, June 13, 2017

Canada (CHS) layer update in the GeoGarage platform

39 nautical raster charts updated

US (NOAA) layer update in the GeoGarage platform

4 nautical raster charts updated

China turns on the world’s largest floating solar farm

The Chinese Government has announced that they've completed the construction of the world's largest floating solar farm, and it's now producing energy. 
Sungrow Power Supply have created created a 40-megawatt solar power plant, which sits atop of a flooded former coal-mining town in China's eastern Anhui province. 

From Smithsonian by Jason Daley

Last week, workers switched on a solar energy plant capable of producing 40 megawatts of power, which floats on a manmade lake in China’s Anhui province near the city of Huainan, reports Sarah Zheng at the South China Morning Post.
The array is the largest floating solar project in the world, though at the brisk pace China is building new renewable projects it’s unlikely to hold that title very long.

The floating solar farm occupies an area that used to be used for coal mining in Anhui province. Photo: Handout

Built by the company Sungrow Power Supply, the power plant will produce enough energy to power 15,000 homes, Zheng reports.
While the company has not revealed the exact size of the operation, it produces twice as much energy as the previous holder of the largest-floating-solar-plant title, which is located in the same area and was launched by the company Xinyi Solar in 2016.

The new floating solar plant was connected to the grid in Huainan, Anhui in May.
Photo : Handout

Anhui province is a coal-rich region, and the Sungrow plant is located on a lake that was once the site of intensive mining.
Heavy rains filled the area with water.
As Zhen reports, the depth of the lake varies from 12 feet to 30 feet.

 Floating solar power plant North of Yingtaohuan (CNES imagery)

So why build solar plants on top of lakes and reservoirs?
Fiona Harvey at The Guardian explains that building on bodies of water, especially manmade lakes that are not ecologically sensitive, helps protect agricultural land and terrestrial ecosystems from being developed for energy use.
The water also cools the electronics in the solar panels, helping them to work more efficiently, reports Alistair Boyle for The Telegraph.
For similar reasons Britain built a 23,000-panel floating solar farm on the Queen Elizabeth II reservoir near Heathrow airport in 2016 to help power the Thames Water treatment plant.


The Sungrow solar farm is just one tiny piece in China’s push towards renewable energy.
According to Irina Slav at Business Insider, the country recently announced it would invest $361 billion in renewable power by 2020, and by 2022 could produce 320 gigawatts of wind and solar power and 340 gigawatts of hydropower.
Zheng reports that currently renewables are responsible for 11 percent of China’s energy and may reach 20 percent by 2030.

The water helps to cool the surface of the solar panels, reducing the risk of overheating.
Photo: Handout
While the floating solar plant is the largest in the world, it pales in comparison to some of China's non-floating solar projects.
The Longyangxia Dam Solar Park on the Tibetan plateau hosts 4 million solar panels that produce 850 megawatts of energy.
Even that will soon be eclipsed by a project in the Ningxia Autonomous Region, which will have 6 million solar panels and produce 2 gigawatts of power.



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Monday, June 12, 2017

Near-shore phytoplankton bloom captured by Space

Algal bloom off Belgian coast
Oostende Belgian coast with the GeoGarage platform (Vlaamse Hydrografie)

From ESA by

Last year, the Sentinel-2A satellite captured an intense algal bloom very close to the Belgian coast.
The high-resolution capabilities of Sentinel-2’s main instrument are allowing scientists to monitor algae blooms in areas previously not possible to observe with satellites.

Like many European countries, Belgium regularly reports on the quality of its coastal waters to the European Commission.
Water quality measurements have been made from ships for this purpose since the 1980s and, for over a decade, satellite data from Envisat and from Sentinel-3A have been used to supplement ship-based measurements.

While these satellite data have been vital for water quality monitoring, they do not provide the adequate coverage nor resolution for monitoring close to the coast.

Chlorophyll concentrationOn 1 May 2016, the Sentinel-2A satellite captured an algal bloom close to Belgium’s coast.
Thanks to the multispectral capabilities of Sentinel-2’s main instrument, chlorophyll a absorption and hence concentration can be derived, revealing an intense phytoplankton near the Port of Ostend.

The Sentinel-2 mission, however, carries a high-resolution multispectral instrument that has great advantages for monitoring near-shore waters.
With this finer resolution data now available, scientists can properly analyse the water within 2 km of the coast.

In May 2016, scientists discovered an intense algal bloom in a previously ‘unseen’ zone.
Owing to the bloom’s extent and the shallow water depth, it would have been nearly impossible to detect or sample using shipborne measurements.
“This satellite image was a surprise to me!” said Kevin Ruddick, scientist at the Royal Belgian Institute for Natural Sciences.
“I have spent a few weeks each year over the last 20 years making measurements at sea from the Belgica research vessel, but we do not get so close to the coast because the water is too shallow. The ship must have been quite close to such blooms in May 2016 but did not even realise that this was happening.”

Algae blooms are a normal phenomenon, providing food for marine organisms.
But sometimes they can be harmful to humans and animals when they produce toxic substances, or occur too often or last too long, depleting the concentration of oxygen in the water.

Water turbidity off the Belgian coast
On 1 May 2016, the Sentinel-2A satellite captured an algal bloom close to Belgium’s coast.
The multispectral capabilities of Sentinel-2’s main instrument allow for an estimate of water turbidity. 

In this example from May 2016, the algal species is almost certainly phaeocystis globosa, which is not toxic and does not noticeably deplete oxygen in Belgian waters because these waters are highly turbulent and quickly draw down oxygen from the atmosphere.
Instead, it creates foam on the beaches which is a nuisance for beach-goers as well as fishermen as it makes their nets sticky and difficult to manage.

Nonetheless, it is important to monitor blooms so that fishermen, fish farmers and public health officials know about such events as soon as possible – even more so when the species may be toxic.

With its 13 spectral channels, the Copernicus Sentinel-2 mission’s novel imager can capture water quality parameters including algal blooms, as well as surface concentration of chlorophyll and turbidity (or water clarity) – giving a clear indication of the state of the near-shore environment.

This information is particularly important for meeting the monitoring requirements of the European Commission’s Water Framework and Marine Strategy Framework Directives.

The Royal Belgian Institute for Natural Sciences is funded by the European Commission's FP7 Research Programme HIGHROC Project to develop and test methods to use Sentinel-2 data for this purpose.

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