Extreme Temperature Diary- Friday April 17th, 2020/Main Topic: New NCEI German Record Ratio Study

Friday April 17th… Dear Diary. The main purpose of this ongoing blog will be to track United States extreme or record temperatures related to climate change. Any reports I see of ETs will be listed below the main topic of the day. I’ll refer to extreme or record temperatures as ETs (not extraterrestrials).😉

Main Topic: New NCEI German Record Ratio Study

Dear Diary. As many of my readers know I spend many an hour unlocking the scientific secrets held within the following National Center For Environmental Information database:

https://www.ncdc.noaa.gov/cdo-web/datatools/records

This site was instrumental in developing my scientific study on surface records, which became another tool in the arsenal showing that a warming trend was occurring on the planet, published in 2009 in Geophysical Science:

I am so very grateful to Dr. Gerry Meehl, Claudia Tebaldi, and David Easterling of NOAA for helping to publish the study of what has now become my life’s work. Initially I concentrated on statistics from the United States, but gradually since starting this site in 2017 I’ve added other countries to the mix. Not all countries in the NCEI site have a good, fairly robust number of reports for research depending upon the number of surface stations with long term records, so I’ve been picking ones that have better, promising statistics. One such country is Germany. During this new era of isolating to defeat COVID19 I’ve had more time to stay at home doing thorough research, so here are my findings on Germany:

I have completed cataloging daily NCEI German counts back to 1900. The database for Germany is comparable to the United States, Australia and Canada in that there are many reports going all the way back tothe turn of the 20th century. As far as I can tell so far, there are only a handful of countries in the NCEI database with a reasonable number of record reportsprior to 1930 for cataloging. Somewhat surprisingly, German counts did not tail off much even during the waning months of WWII in 1945.


We see similar decadal ratio patterns between Germany and the United States:


image.png

Note the spike in the 1930s and mid 20th century cooling thereafter with a big warming trend from 1980 onward.


It would appear that Germany may be one spot on the planet that had some very slight cooling from the 2000s into the 2010s:

image.png
image.png

Here are my German numbers:

1.png

I will be adding all charts to my website the next few days under the following post:

Next, let’s see if the German numbers support the climate change signature of nights warming faster than days. Here we will compare daily high minimums VS. daily high maximums:

Well this is interesting, but recent data does not fit the hypothesis that nights are warming faster than days, at least in Germany. The trendline is up through the 1990s, buy the last couple of decades show a marked decrease in the number of record high mins compared with record high maxes. Our next task is to see why this data is exhibiting such behavior.

Well that’s about it for these rather wonky datasets. Auf Wiedersehen.

My next task will be to update Indian files,which have not be touched since 2017. Chinese and Japanese counts do not go back any further than about 1970, so I’ve opted not to catalogue tallies for those countries for now (or at least not enough for a comparative study).

Now here are some of today’s articles and notes on the horrid COVID-19 pandemic:

Here is more climate and weather news from Friday:

(As usual, this will be a fluid post in which more information gets added during the day as it crosses my radar, crediting all who have put it on-line. Items will be archived on this site for posterity. In most instances click on the pictures of each tweet to see each article.)

Here are more chilly “ET’s from the last couple of days:

On the warm side of things:

(If you like these posts and my work please contribute via the PayPal widget, which has recently been added to this site. Thanks in advance for any support.) 

Guy Walton “The Climate Guy”

Leave a Reply

Your email address will not be published.