Trump refers to a map, modified using a Sharpie, while talking to reporters following a briefing from officials about Hurricane Dorian in the Oval Office at the White House on 4 September 2019. Trump has dismissed scientific evidence and fact numerous times, including 2019 when he displayed a map inaccurately modified to show Hurricane Dorian’s likely path. Photo: Erin Schaff / The New York Times

How Trump tried, but largely failed, to derail America’s top climate report – “Thank God they didn’t know how to run a government”

By Christopher Flavelle 1 January 2021 (The New York Times) – The National Climate Assessment, America’s premier contribution to climate knowledge, stands out for many reasons: Hundreds of scientists across the federal government and academia join forces to compile the best insights available on climate change. The results, released just twice a decade or so, […]

Satellite view of wildfires on the U.S. West Coast between 12 September 2020 and 16 September 2020. Video: Michael Benson / CIRA / NOAA

Watching Earth burn – “The war has started. We’re losing.”

By Michael Benson 28 December 2020 (The New York Times) – I have a pastime, one that used to give me considerable pleasure, but lately it has morphed into a source of anxiety, even horror: earth-watching. Let me explain. The earth from space is an incomparably lovely sight. I mean the whole planet, pole to […]

Map showing the age of sea ice in the Arctic at winter maximum in 2000 (left, week of March 18) and 2020 (right, week of March 21). Ice older than 5 years (white) is very rare today; only a small ribbon remains along the islands of the Canadian Arctic. Age is a stand-in for ice thickness and durability; young ice is thinner and more likely to melt in the summer. NOAA Climate.gov map, based on data from the National Snow and Ice Data Center. Graphic: NOAA

Sea ice loss and extreme wildfires mark another year of Arctic change – “The transformation of the Arctic to a warmer, less frozen, and biologically changed region is well underway”

8 December 2020 (NOAA) – NOAA’s 15th Arctic Report Card catalogs for 2020 the numerous ways that climate change continues to disrupt the polar region, with second-highest air temperatures and second-lowest summer sea ice driving a cascade of impacts, including the loss of snow and extraordinary wildfires in northern Russia. The Arctic Report Card is […]

This satellite animation is from NOAA’s GOES-16 (GOES East) satellite and runs from 13 May 2020 through 18 November 2020. The GOES East satellite recorded this imagery of the entire Atlantic basin from its operational location of 75.2 degrees west longitude. This allows us to show storms as they form off the coast of Africa and then enter the Atlantic. Video: NOAA

Record-breaking Atlantic hurricane season ends – 2020 saw 30 named tropical storms, 10 hurricanes that intensified rapidly

1 December 2020 (WMO) – The extremely active 2020 Atlantic hurricane season officially ended on 30 November with a record-breaking 30 named tropical storms, including 13 hurricanes and six major hurricanes. There were 12 landfalling storms in the continental United States. This is the most storms on record, surpassing the 28 from 2005, and the […]

August 2020 blended land and sea surface temperature percentiles. Graphic: NOAA / NCEI

August 2020 was the world’s second-warmest August on record – The year 2020 has more than a 99.9 percent chance to rank among the five warmest years on record

By Jeff Masters, Ph.D. 15 September 2020 (Yale Climate Connections) – August 2020 was the second-warmest August since global record keeping began in 1880, NOAA’s National Centers for Environmental Information, or NCEI, reported September 14. The month was just 0.04 degrees Celsius behind the record set in August 2016. NASA rated the month as the third-warmest August on […]

Annual Greenhouse Gas Index (AGGI), 1750-2019. For 2019, the AGGI was a record high 1.45, representing an increase in total direct radiative forcing of 45% since 1990. The increase in radiative forcing from CO2 alone since 1990 was 60.6%. Pre-1978 changes in the CO2-equivalent abundance and AGGI are based on the ongoing measurements of all greenhouse gases reported here, measurements of CO2 going back to the 1950s from C.D. Keeling (Keeling et al., 1958), and atmospheric changes derived from air trapped in ice and snow above glaciers (Machida et al., 1995, Battle et al., 1996, Etheridge, et al., 1996; Butler, et al., 1999). Equivalent CO2 atmospheric amounts (in ppm) are derived with the relationship between CO2 concentrations and radiative forcing from all long-lived greenhouse gases. Graphic: Butler and Montzka, 2020 / NOAA

NOAA Annual Greenhouse Gas Index reached another record high in 2019 – Total direct radiative forcing has increased 45 percent since 1990

14 May 2020 (NOAA) – […] The NOAA monitoring program provides high-precision measurements of the global abundance and distribution of long-lived greenhouse gases that are used to calculate changes in radiative climate forcing. Air samples are collected through the NOAA/GML global air sampling network, including a cooperative program for the carbon gases which provides samples […]

Blended land and sea surface temperature anomalies and percentiles, February 2020. Graphic: NOAA / NCEI

February 2020 second warmest on record globally

By Bob Henson 13 March 2020 (Weather Underground) – Research groups across the world concur that this past northern winter (December-February) was the second-warmest on record globally, in records going back more than a century. The latest group to confirm this finding is NOAA, in its monthly State of the Climate report issued Friday. The winter result […]

Map showing land and ocean global temperature percentiles and departures from average for January 2020. The January 2020 global land and ocean surface temperature was the highest in the 141-year record at 2.05°F (1.14°C) above the 20th century average of 53.6°F (12.0°C). This value surpassed the previous record set in 2016 by only 0.04°F (0.02°C). Graphic: NOAA / NCEI

January 2020 was the warmest January on record for the globe

13 February 2020 (NCEI) – The globally averaged temperature departure from average over land and ocean surfaces for January 2020 was the highest for the month of January in the 141-year NOAA global temperature dataset record, which dates back to 1880. This monthly summary, developed by scientists at NOAA National Centers for Environmental Information, is […]

Spatial distribution of global surface ocean pHT (total hydrogen scale, annually averaged) in past (1770), present (2000) and future (2100) under the IPCC RCP8.5 scenario. Graphic: Jiang, et al., 2020 / Nature Scientific Reports

Graph of the Day: The Future of Ocean Acidification

18 December 2019 (NOAA) – New research by NOAA, the University of Maryland, and international partners published in Nature Scientific Reports shows that the changing chemistry of seawater has implications for continued greenhouse gas absorption. The ocean has been playing an important role in helping slow down global climate change by removing the greenhouse gas carbon dioxide […]

Average U.S. temperature for December and January combined, from December-January 1895-96 to 2019-20. Graphic: NOAA / NCEI

January 2020 sees warmest winter in U.S. history so far

By Bob Henson 6 February 2020 (Weather Underground) – The first two months of meteorological winter (December 2019 – January 2020) were the warmest on record for the contiguous U.S. in data going back to 1895. NOAA provided the January data and images on Thursday ahead of its monthly U.S. climate report. The average national temperature […]

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