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2017 SkS Weekly Climate Change & Global Warming News Roundup #33

Posted on 19 August 2017 by John Hartz

A chronological listing of news articles posted on the Skeptical Science Facebook page during the past week. 

Editor's Pick

July 2017 equaled record July 2016

GISTEMP LOTI Anomaly July2017 

A global map of the June 2017 LOTI (land-ocean temperature index) anomaly, relative to the 1951-1980 June average. View larger image. 

July 2017 was statistically tied with July 2016 as the warmest July in the 137 years of modern record-keeping, according to a monthly analysis of global temperatures by scientists at NASA's Goddard Institute for Space Studies (GISS) in New York.

Last month was about 0.83 degrees Celsius warmer than the mean July temperature of the 1951-1980 period. Only July 2016 showed a similarly high temperature (0.82 °C), all previous months of July were more than a tenth of a degree cooler.


GISTEMP Seasonal Cycle since 1880

The GISTEMP monthly temperature anomalies superimposed on a 1980-2015 mean seasonal cycle. View larger image or PDF.

Starting with this update, the previously used ocean data set ERSST v4 was replaced by the newer ERSST v5. This contributed to the changes of some of the data in last month's update. For more information, see the Updates to Analysis and the History Pages.

The monthly analysis by the GISS team is assembled from publicly available data acquired by about 6,300 meteorological stations around the world, ship- and buoy-based instruments measuring sea surface temperature, and Antarctic research stations.

The modern global temperature record begins around 1880 because previous observations didn't cover enough of the planet. Monthly analyses are sometimes updated when additional data becomes available, and the results are subject to change.

July 2017 equaled record July 2016, NASA's Goddard Institute for Space Studies, Aug 15, 2017 

Links posted on Facebook

Sun Aug 13 2017

Mon Aug 14 2017

Tue Aug 15 2017

Wed Aug 16 2017

Thu Aug 16 2017

Fri Aug 17 2017

Sat Aug 18 2017

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Comments 1 to 2:

  1. The link to "Here's what Trump's team gets wrong about climate change so far" by the weather channel, isn't working properly.  I found it here.

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    Moderator Response:

    [JH] Proper link inserted. Thank you for bringing this to our attention.

  2. Thanks again for these, and especially for the troubling lead article. So shouldn't we have expected July of a non-El Nino year to be at least a bit cooler than the previous July of an El Nino year? Does this tie portend anything? Could we be seeiing the beginning of a 'step change,' where we are suddenly knocked directly into a warmer regime, never to cool below pre-2016 levels again (or only perhaps temporarily after a major volcano eruption or some such thing)?

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