Satellite view of the extremely rapid intensification of Tropical Cyclone Ambali in the southern Indian Ocean, and then quick weakening, 6 December 2019. This entire satellite loop is only 24 hours. Photo: Stu Ostro / The Weather Channel

Two tropical cyclones set records in one week: Ambali has fastest intensification on record south of the equator, and Kammuri has tallest, coldest cloud tops ever

By Bob Henson 6 December 2019 (Weather Underground) – Barely a tropical storm on Wednesday night EST, Tropical Cyclone Ambali astounded weather watchers on Thursday as it pole-vaulted to the brink of Category 5 strength in the southwest Indian Ocean, counter to nearly all expectations. Ambali’s top sustained winds, as assessed from satellite data by […]

This animation depicts the abundance and direction of black carbon blowing through the atmosphere from 1 November 2019 to 18 November 2019. The data for the animation come from the GEOS forward processing (GEOS-FP) model, which assimilates information from satellite, aircraft, and ground-based observing systems. Video: Joshua Stevens / NASA Earth Observatory

Smoke plumes from Australia bushfires crossing oceans

By Michael Carlowicz and Adam Voiland 21 November 2019 (NASA) – Three weeks into November 2019, springtime bush fires continued to blaze across southern and eastern Australian states. As of November 20, government agencies counted 45 fires in South Australia and 49 in New South Wales, and dangerously dry and windy weather was fanning flames […]

Aerial view of Runit Dome, in Enewetak Atoll, the Marshall Islands, where more than 3.1 million cubic feet of U.S.-produced radioactive soil and debris, including lethal amounts of plutonium, are buried. The so-called “Tomb” now bobs with the tide, sucking in and flushing out radioactive water into nearby coral reefs, contaminating marine life. Video: Carolyn Cole / Los Angeles Times

How the U.S. betrayed the Marshall Islands, kindling the next nuclear disaster – “More than any other place, the Marshall Islands is a victim of the two greatest threats facing humanity: nuclear weapons and climate change”

By Susanne Rust 10 November 2019 MAJURO, Marshall Islands (Los Angeles Times) – Five thousand miles west of Los Angeles and 500 miles north of the equator, on a far-flung spit of white coral sand in the central Pacific, a massive, aging and weathered concrete dome bobs up and down with the tide. Here in […]

Hawaii was surrounded by waters with warmer-than-average sea surface temperatures on 9 September 2019. Departures from the seasonal norm are shown in degrees Celsius. On this date, Lihue, Kauai observed its 17th consecutive day of a daily record high temperature being set or tied. This is likely the longest such stretch for any official weather station with a long period of record (more than 50 years) at any site in the U.S. climate database. Graphic: Tropical Tidbits

Hawaii’s warmest summer on record and Alaska’s second warmest in 2019

By Christopher C. Burt 10 September 2019 (Weather Underground) – Although 2800 miles of open ocean separate them, both Anchorage, Alaska and Honolulu, Hawaii experienced their warmest climatological summers (June-August) on record this year. It appears that this was Alaska’s second warmest summer (following that of 2004) but it is likely that it was Hawaii’s […]

Landsat 8 images from 21 July 2018 (left) and 16 September 2018 (right) illustrating the Taku Glacier transient snowline. The 21 July 2018 snowline is at 975 m and the 16 September 2018 snowline is at 1400 m. Average end-of-summer snowline is 975 m; the 2018 end-of-summer snowline was the highest observed in the 73-year record. Graphic: AMS

State of the Climate in 2018: 2018 was the fourth-hottest year on record, behind 2016, 2015, and 2017

12 August 2019 (NCEI) – A new State of the Climate report [pdf] confirmed that 2018 was the fourth warmest year in records dating to the mid-1800s. Last year was the fourth warmest year on record despite La Niña conditions early in the year and the lack of a short-term warming El Niño influence until […]

GFS 2-meter temperature anomaly forecast for Alaska on 6 July 2019. Graphic: Tropical Tidbits

Anchorage, Alaska roasts in 90°F heat, smashing all-time record by 5°F

By Dr. Jeff Masters 5 July 2019 (Weather Underground) – The temperature in Alaska’s largest city of Anchorage soared to an astonishing 90°F on Thursday, July 4, smashing the city’s previous all-time heat record by a remarkable 5°F. Anchorage’s average high temperature for July 4 is 65°F; records for Anchorage date back to 1952. All-time […]

As oceans warm, microbes could pump more carbon dioxide back into the air

By Kevin Krajick 29 April 2019 (Columbia University) – The world’s oceans soak up about a quarter of the carbon dioxide that humans pump into the air each year — a powerful brake on the greenhouse effect. In addition to purely physical and chemical processes, a large part of this is taken up by photosynthetic plankton as they incorporate carbon into their […]

Fears Pacific nuclear bomb waste site is leaking – “We pray that the Runit dome does not eventually become our coffin”

26 May 2019 (AFP) – As nuclear explosions go, the U.S. “Cactus” bomb test in May 1958 was relatively small — but it has left a lasting legacy for the Marshall Islands in a dome-shaped radioactive dump. The dome — described by a UN chief Antonio Guterres as “a kind of coffin” — was built […]

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