Archives par mot-clé : 2024

climate-debate

UAH Global Temperature Update for August, 2024: +0.88 deg. C

by P. Homewood,  Sep 2, 2024 in NotaLotofPeople KnowThat

From Dr. Roy Spencer’s Global Warming Blog.

The Version 6 global average lower tropospheric temperature (LT) anomaly for August, 2024 was +0.88 deg. C departure from the 1991-2020 mean, up slightly from the July, 2024 anomaly of +0.85 deg. C.

Persistent global-averaged warmth was (unusually) contributed to this month by the Southern Hemisphere. Of the 27 regions we routinely monitor, 5 of them set record-warm (or near-record) high monthly temperature anomalies in August, all due to contributions from the Southern Hemisphere:

Global land: +1.35 deg. C

Southern Hemisphere land: +1.87 deg. C

Southern Hemisphere extratropical land: +2.23 deg. C

Antarctica: +3.31 deg. C (2nd place, previous record was +3.37 deg. C, Aug. 1996)

Australia: +1.80 deg. C.

The linear warming trend since January, 1979 now stands at +0.16 C/decade (+0.14 C/decade over the global-averaged oceans, and +0.21 C/decade over global-averaged land).

The following table lists various regional LT departures from the 30-year (1991-2020) average for the last 20 months (record highs are in red):

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climate-debate

Global Temperature updated for August 2024

by C. Best, Aug 27, 2024 in SciTravelOpinion

The global temperature anomaly for August was 1.27 deg.C relative to a 1961-1990 baseline. These results use GCHN monthly land temperatures combined with HadSST4 ocean temperatures. I use a novel method to calculate this using a 3D spherical triangulation of the earth’s surface. This is shown below.

The monthly trends relative to the 1961-1990 baseline are shown below.

Temperature trends

One of the problems with Global Warming is that the underlying temperature trends are superimposed on far larger but shorter natural variability cycles (El Nino). Therefore it makes little sense to push for action based on just one month’s temperature. It may even take another decade to be certain that average temperatures really have exceeded  1.5 C.

A far better method to determine when this will happen is based on using Icosahedral grids with decadal averaging 

The observed stable decadal trend shows that the Paris Agreement to limit warming to 1.5C since the preindustrial level will very likely be exceeded in 2032

better to know...?, climate-debate

L A Times Cherry Picks & Misrepresents NOAA Climate Data to Exaggerate March 2024 U.S. and Global Temperature Outcomes

by L. Hamlin, Apr 19, 2024 in WUWT

The L A Times article and headline shown below exaggerate the March 2024 U.S. and global temperature outcomes by cherry picking and misrepresenting data that mischaracterizes what the data actually shows.

 

The Times article makes the following claims regarding the U.S. for the period January through March 2024:

“In the United States, March was the 17th warmest in the 130-year data record, according to the National Oceanic and Atmospheric Administration. The average temperature in the contiguous U.S. was 45.1 degrees — 3.6 degrees above average.”

The Times article does not present readily available NOAA measured  Maximum Contiguous U.S Temperature for the month of March from 1895 through 2024 as shown below.

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unclassified

UAH Global Temperature Update for March, 2024: +0.95 deg. C

by R. Spencer, Apr 2, 2024 in WUWT

The Version 6 global average lower tropospheric temperature (LT) anomaly for March, 2024 was +0.95 deg. C departure from the 1991-2020 mean, up slightly from the February, 2024 anomaly of +0.93 deg. C, and setting a new high monthly anomaly record for the 1979-2024 satellite period.

New high temperature records were also set for the Southern Hemisphere (+0.88 deg. C, exceeding +0.86 deg. C in September, 2023) and the tropics (+1.34 deg. C, exceeding +1.27 deg. C in January, 2024). We are likely seeing the last of the El Nino excess warmth of the upper tropical ocean being transferred to the troposphere.

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