Relentless ocean heat takes toll on reefs worldwide
There’s been little let-up in the global wave of coral bleaching that’s been ongoing in various parts of the world since 2014, according to an update from NOAA’s Coral Reef Watch program. To date, the bleaching is the most widespread and damaging on record, including mass bleaching in areas where it’s never been seen before — the northern Great Barrier Reed, Kiribati and Jarvis Island.
And more of the same is expected in in the next few months as the Northern Hemisphere moves toward summer. Based on forecasts for the next two to three months, bleaching is likely in the eastern Pacific. Widespread coral bleaching with significant mortality continues in the Samoas (where bleaching of both shallow and deeper corals has now been confirmed) but is expected to dissipate shortly.
After extensive damage to the Great Barrier Reef, ocean temperatures finally cooled of in April, giving a respite to the corals that survived. Similarly, the corals around Florida also got some relief in the past few months. Get the full update at the NOAA coral reef watch page.
Uptick in tropical cyclones intensifies impacts, hampers recovery
Along with the widely reported bleaching threat from over-heated oceans, coral reefs in many parts of the world also may have to cope with intensifying tropical storms, which could make it even more difficult for them to survive the Anthropocene.
Along with recording the third-highest global average January temperature, scientists with the World Meteorological Organization have been tracking the Polar equivalent of heatwaves, as strong Atlantic storms driving temperatures in the Arctic to near freezing, at times 50 degrees Fahrenheit above the seasonal average.
November’s average global temperature was 1.31 degrees Fahrenheit above the 20th century average, making it the fifth-warmest November on record. According to the latest global state of the climate report from the National Centers for Environmental Information, it was cooler than last year’s record by 0.41 degrees Fahrenheit, but 0.09 degrees warmer than the average for the 21st century.
According to the report, warmer-than-average conditions prevailed across most of the globe’s land areas, with record warmth in parts of central and southeastern Canada, where temperatures were at least 9 degrees Fahrenheit above the 1981–2010 average in many places. Other warm regions included the far northern tier of the United States along with a portion of the southwest, parts of western and southern Mexico, sections of eastern and west central Africa, and regions of some southeastern Asia island nations. Continue reading “2016 headed for new global temperature record”→
‘No ship captain or shipping company wants to strike a whale’
Satellite data about whale movements and ocean conditions have helped scientists create monthly whale hotspot maps that could help avert collisions between ships and marine mammals.
Developed by researchers with NOAA Fisheries, Oregon State University and the University of Maryland, the WhaleWhatch program alerts ships where there may be an increased risk of encountering these endangered whales. NASA helped fund the project, which draws on ocean observations from NASA and NOAA satellites. Continue reading “Satellite mapping could help avert whale-ship crashes”→
Deadly heatwaves and flooding part of emerging pattern of extremes
Blistering, record heat in the Southwest helped propel the lower 48 states to a new high-temperature record in June, with an average reading of 71.8 degrees Fahrenheit for the month. That included a new monthly temperature record set in Death Valley National Park, where the average temperature in June was 101.9 degrees Fahrenheit.
The warmest-ever June reading broke the record set during the Dust Bowl era, in 1933, according to NOAA’s National Centers for Environmental Information. The year-to-date is the third-warmest on record, the monthly state of the climate summary report said.