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Some reading for the “anti-warmalists” and “climate-change deniers”

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Author Topic: Some reading for the “anti-warmalists” and “climate-change deniers”  (Read 20074 times)
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Having fun in the hills!

« Reply #1350 on: April 22, 2020, 03:56:11 pm »

from The Washington Post…

This year is on track to be Earth's warmest on record,
beating 2016, NOAA says

The U.S. oceans and atmosphere agency puts the odds of a new record at 75 percent.

By ANDREW FREEDMAN | 12:37PM EDT — Tuesday, April 21, 2020

A man looks up as police and fire personnel move in to remove climate activists outside a E.U. summit meeting in Brussels on December 12. — Photograph: Francisco Seco/Associated Press.
A man looks up as police and fire personnel move in to remove climate activists outside a E.U. summit meeting in Brussels on December 12.
 — Photograph: Francisco Seco/Associated Press.

THERE IS a 75 percent chance 2020 will set a record for the warmest year since instrument records began in 1880, the National Oceanic & Atmospheric Administration is projecting, beating out 2016 for the distinction.

This is somewhat unexpected, since there is no declared El Niño event in the tropical Pacific Ocean, which tends to provide a natural boost to global temperatures that are already elevated due to the human-caused buildup of greenhouse gases in the atmosphere.

The NOAA projection, made late last week, is based on statistical modeling now that the first quarter of 2020 is off to a near-record warm start, coming in as the second-warmest January through March period since instrument records began in 1880.

Both Europe and Asia had their warmest first quarter of the year. Only 2016 was warmer during this period, and that year featured an unusually intense El Niño event.

Remarkably, the global temperature differences from average in February and March were among the largest of any of the 1,680 months in the agency's records. March had the second largest anomaly of any month, said Derek Arndt, the head of climate monitoring at NOAA's National Centers for Environmental Information in Asheville, North Carolina, during a news conference call.

February and March were the warmest two non-El Niño months in NOAA’s temperature database, Arndt said.

He said March was also the 44th straight March and 423rd straight month that had global average temperatures at least nominally above the 20th century average. March has warmed by 1.2 degrees Fahrenheit (0.7 degrees Celsius) since 1991, he said.

More on the 2020 prediction

Despite the lack of an officially-declared El Niño, in which temperatures in the tropical Pacific must rise above a particular threshold, ocean temperatures have nevertheless been running above average in recent months, Arndt said, contributing to the warm start to 2020.

He said that in 2016, the anomalous warmth was front loaded due to El Niño conditions that peaked early in the year, before easing as the El Niño diminished later. The first quarter of this year has run neck and neck with 2016's temperatures so that if monthly global average temperatures remain relatively steady during the rest of the year, 2020 will move into the top spot, he said.

Year-to-date global temperatures for 2020 compared with the top 10 warmest years. — National Oceanic & Atmospheric Administration.
Year-to-date global temperatures for 2020 compared with the top 10 warmest years. — National Oceanic & Atmospheric Administration.

The oceans and atmosphere agency also found there is a 99.9 percent chance 2020 will end up being a top 5-warmest year.

“A lot of that has to do with the fact that the year 2016 became the warmest year on record largely because it was very, very warm in the first half of the year, and it was actually not nearly as impressively warm in the second half of the year,” Arndt said. “So the way this might play out is, by staying close to 2016 early on, it does look like a better than half probability that we will finish the year warmest on record.”

The NOAA is not just making a guess at the final temperature ranking for the year. Instead, scientists are using a statistical model that takes monthly temperatures during the past four decades and generates about 10,000 potential outcomes. With March data included, about three-quarters of the model runs showed 2020 would at least nominally beat 2016.

This model does not incorporate El Niño or La Niña conditions, the latter of which can dampen global average temperatures, so if either of these phenomena develop, the projection may be off target.

Separately, Gavin Schmidt, who leads NASA's Goddard Institute for Space Studies in New York, puts the odds of a record this year at closer to 60 percent, based on NASA's data set, which has slightly different rankings than has NOAA. However, he said that when applying NOAA's methods to NASA’s monthly data, the odds would increase to 67 percent.

Other temperature monitoring agencies such as the U.K. Met Office have forecast 2020 will be one of the top 5 warmest years on record.

In any case, climate scientists do not place too much emphasis in annual rankings for monitoring and attributing global climate change, but rather focus more on long-term trends in greenhouse gas emissions, air and sea temperatures and climate indicators such as melting glaciers, sea level rise and changes in precipitation patterns.

The land and oceans respond to the amount of greenhouse gases in the air, rather than emissions rates, which means the sudden cut in carbon emissions related to the coronavirus pandemic will not affect global average surface temperatures in the near future.


Andrew Freedman is an editor for the Capital Weather Gang at The Washington Post. He has long covered science research and policy, with a focus on climate change, extreme weather and the environment. He was among the first reporters to popularize the term “polar vortex” during the infamous East Coast winter of 2013 to 2014. He joined The Washington Post in 2019, having worked as an editor and reporter for Axios, Mashable, Climate Central and other publications. Andrew holds a B.A. in political science from Tufts University; a M.A. in climate and society from Columbia University; and a M.A. from the Fletcher School of Law and Diplomacy.

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