Category: Oceans Influence on Climate & Weather

Lights in Puerto Rico. Image credit: NOAA

Puerto Rico Underwater Glider Mission 2016

On Thursday July 21st, PHOD began its fifth underwater glider mission in the Caribbean Sea. Two underwater gliders, SG609 and SG630, were successfully deployed off of Puerto Rico. The deployment was carried out by AOML researchers on board the R/V La Sultana with the help of personnel from the University of Puerto Rico Mayaguez (UPRM). The refurbished gliders have sensors that measure temperature, salinity, oxygen, Chlorophyll-a, and turbidity. This deployment is the beginning of the 2016 Atlantic Hurricane Season deployment, with two more gliders scheduled for deployment in the tropical North Atlantic in August.

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High-resolution photomosaic images taken at Maug Island. Photo Credit: NOAA

Volcano Spewing Carbon Dioxide Drives Coral to Give Way to Algae

The new research published online August 10 in Nature Climate Change provides a stark look into the future of ocean acidification – the absorption by the global oceans of increasing amounts of human-caused carbon dioxide emissions. Scientists predict that elevated carbon dioxide absorbed by the global oceans will drive similar ecosystem shifts, making it difficult for coral to build skeletons and easier for other plants and animals to erode them.

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Coral ecologist Ian Enochs dives in the carbon dioxide bubbles of Maug's coral reefs (credit: Stephani Gordon/Open Boat Films/NOAA)

Increased Erosion at Acidified Coral Reefs

Corals live and thrive by maintaining a careful balance between their growth rate and the rate of erosion. Scientists already know the projected increases in carbon dioxide in our global oceans, known as ocean acidification, will slow the rate at which corals build the hard calcium carbonate skeletons that are the foundation of their habitat. A new study published online today in PLOS ONE demonstrates that in naturally highly acidified waters, these coral skeletons will also face increased erosion from microscopic organisms, called bioerosion. The result is accelerated breakdown and loss of reef structures, and potentially the loss of essential habitat.

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Black-band disease on a pale coral colony of Montastraea cavernosa in the Florida Keys. Photo Credit: NOAA.

NOAA Research on Microbial Communities Contributes to National Microbiome Initiative

On May 13th, the White House Office of Science and Technology Policy introduced the National Microbiome Initiative, an effort to support multi-agency research to help sample and better understand communities of microorganisms that are critical to both human health and the world’s ecosystems. As the nation’s premier ocean science agency, NOAA is leading interdisciplinary research to improve observation and assessment of marine microbiomes.  To support this national initiative, NOAA’s Atlantic Oceanographic and Meteorological Laboratory (AOML) received nearly $2 million in funding this year to conduct a number of projects that integrate genetic sampling techniques and technologies to help advance the understanding of the ocean’s microbiomes.

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Infographic showing El Nino patterns. Photo Credit: NWS/ NCEP

Study Explores Role of El Niño in Transport of Waterborne Disease

A new study published in the journal Nature Microbiology highlights how emerging, devastating outbreaks of Vibrio infection in Latin America might be linked to El Niño, a climate pattern that periodically causes surface temperatures to warm throughout the equatorial Pacific Ocean. A researcher with the University of Miami’s Cooperative Institute of Marine & Atmospheric Studies at NOAA’s Atlantic Oceanographic & Meteorological Lab was part of an international research team that used microbiological, genomic, and bioinformatic tools to demonstrate how El Niño provides a mechanism for the transport of disease from Asia into the Americas. 

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The R/V Roger Revelle docked in Fremantle, Australia prior to the GO-SHIP cruise. Image credit: NOAA

AOML Oceanographers Collect Coast to Coast Measurements on the GO-SHIP Indian Ocean Cruise

During the months of March and April, AOML joined an international team of oceanographers to actively sample the Indian Ocean in support of the Global Ocean Ship-Based Hydrographic Investigation Program (GO-SHIP), an initiative to measure and investigate the ocean basins from coast to coast and from top to bottom. Aboard the R/V Roger Revelle, the team transected the Indian Ocean from the Antarctic northward into the Bay of Bengal, collecting seawater samples at 113 stations as part of a multi-decadal effort to measure various ocean properties, including temperature, salinity, nutrients, carbon and other gases.

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Coral colonies at Cheeca Rocks in the Florida Keys show evidence of bleaching. Image credit: NOAA

AOML Leads Research Efforts Across Caribbean to Improve Bleaching Predictions

For the third time in recorded history, a massive coral bleaching event is unfolding throughout the world’s oceans, stretching from the Indian Ocean to the Caribbean. Above average sea surface temperatures exacerbated by a strong El Niño could result in the planet losing up to 4,500 square miles of coral this year alone, according to NOAA. The global event is predicted to continue to impact reefs into the spring of 2016.

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The research team alongside the NOAA ship Gordon Gunter in Newport, RI prior to taking off on an ocean acidification cruise along the U.S. East coast. Image credit: NOAA

AOML Joins Ocean Acidification Program Research Cruise Along U.S. East Coast

A team of researchers, including scientists from AOML and the University of Miami, set sail June 19th on a research cruise aboard the NOAA ship Gordon Gunter to provide increased understanding of ocean acidification and its drivers along the U.S. East coast. The cruise, which is part of a larger effort supported by NOAA’s Ocean Acidification Program, investigated near-shore and deep waters, and provided researchers with more detailed information about changing ocean chemistry in different environments.

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Illustration of increased trade winds in the Pacific and Indian Oceans during the recent warming hiatus, which increased the inter-ocean pressure gradient and thus enhanced Indonesian throughflow. This resulted in an abrupt increase of Indian Ocean heat content. Image credit: NOAA/CIMAS

Indian Ocean Plays Key Role in Global Warming Hiatus

The earth is warming, but temperatures in the atmosphere and at the sea surface that steadily rose in the last half-century have leveled off and slowed in the past decade, causing the appearance of an imbalance in Earth’s heat budget. Scientists are looking into the deep ocean to determine where this additional heat energy could be stored, and recently traced a pathway that leads to the Indian Ocean.

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