Interesting Weather Stats Any Season, Anywhere (snowstorm, snow, hot, warmest)

[WesterlyWX]

Originally Posted by Ed's Mountain

Apparently July 3, 2023, was globally the warmest single day ever measured and recorded by humans.


Source: https://twitter.com/RARohde/status/1...477373952?s=20

I'm curious to know how and where this was 'measured'...I personally don't trust any measurements that are not shown with station ID and siting. The WMO is an incompetent organisation with substandard stations, especially in its many third-world pov holes. Frankly the only reliable records are in North America, Europe and Australia.

[Ed's Mountain]

Originally Posted by WesterlyWX

I'm curious to know how and where this was 'measured'...I personally don't trust any measurements that are not shown with station ID and siting. The WMO is an incompetent organisation with substandard stations, especially in its many third-world pov holes. Frankly the only reliable records are in North America, Europe and Australia.

It's based on the CFSv2 operational analysis meaning it's a combination of surface, weather balloon, and satellite observations. The numbers are crunched by the NCEP (part of NOAA) but the raw data come from around the globe.

Edit: this particular graph comes only from the surface observations.

[SFX]

And yet the tweet used as a "source" does not have a source of the "data"

[Ed's Mountain]

Originally Posted by SFX

And yet the tweet used as a "source" does not have a source of the "data"

It says right there on the graph what the source is.

[SFX]

That's not the same thing as providing the source.

It's like saying "The 2014 D-M Tmin was the coldest since records began"

Source:GHCN

That's a true bit of info, but you can't click on a link to find the source.

Same for "The record for snow was 2011 since records started for snow extent"

Source:Rutgers snow lab

That's also true, but there is no link to the source so you can check it.

[Cambium]

Originally Posted by SFX

And yet the tweet used as a "source" does not have a source of the "data"

It does state the source, NCEP, you can search for it online to find it

Originally Posted by WesterlyWX

I'm curious to know how and where this was 'measured'...I personally don't trust any measurements that are not shown with station ID and siting.

1. There's no "where". It's the global "average". Collection of all locations including water temps. Which means some have cooled, some have not changed much, but some have warmed well more than normal.

It's an average which the model gathers from all kinds of stations BUT does use a combination of things like Ed's Mountain mentions.

2. The model NCEP CFS is an older U.S product. The newer product(model) is the ERA5 and that also shows "the Average" global temp is the warmest.

3. The NCEP shown in the tweet is from 1979 only. The newer model ERA5 is only from 2011.

[SFX]

Originally Posted by Cambium

It does state the source, NCEP, you can search for it online to find it

Oh I know what the NCEP is, and I know all the links to the data, but that doesn't change what I said. Neither the tweet, nor the redirect in the tweet allow you to see the source.

Even the NCEP site itself does not give the sources they use, nor do they show how they come up with the adjusted final "product".

[SFX]

Here's a link to a way to plot the NCEP "data"

https://climatereanalyzer.org/reanal...nthly_tseries/

As well as many other analysis

[SFX]

Using the GHCN data, (the surface stations selected for climate research), the warmest years have the lowest snowfall, and the coldest years have the highest snowfall.

The precipitation data is flat, even at the hundred year view.

This same relationship exists at all levels of analysis.

[wawa1992]

For the first time in recorded history, Barrow (Utqiagvik), AK has reached a higher temperature this year than Anchorage, AK did. Reliable records date back to 1930.

Barrow topped out at 76 F / 24 C on August 5; Anchorage topped out at 72 F / 22 C, also on August 5.

On average, Barrow tops out at 66.3 F / 19.1 C and Anchorage at 77.8 F / 25.4 C. This means that on average, Anchorage tops Barrow by 11.5 F / 6.4 C.

Before this year, it had been close; 1993 and 1999 both had a 1 F / 0.6 C difference; in 1993, when Barrow hit its record high of 79 F / 26 C on July 13, Anchorage had hit 80 F / 27 C the day before. And in 1999, Barrow reached 76 F / 24 C on July 1 and Anchorage hit 77 F / 25 C on July 5.

On the other hand, in 1969, Barrow only reached 59 F / 15 C (on June 30) and Anchorage reached 85 F / 29 C (on June 14), which remained their record high until 2019!

Barrow's yearly maximum temperature has ranged from 58 F / 14 C in 2014 to 79 F / 26 C in 1993; Anchorage has ranged from 71 F / 22 C in 2008 to 90 F / 32 C in 2019.

In 2023, Anchorage was tied for its second-coolest yearly high and Barrow its second-warmest.

Also, Barrow has yet to see a freeze (through September 5). The average low temperatures in much of Alaska over the last couple months have been really high.