Post

Nice. Is there a, however gridded U.S. set of daily tmin tmax prcp that gets built on the bias algos and is updated regularly? If so I could remove US stations from my GHCN collection and use that dataset. Would save a lot of disk space and network and also CPU on my💻. Station data tho, not Era5-eq.

berkeleyearth.orgData Overview - Berkeley EarthBerkeley Earth provides high-resolution land and ocean time series data and gridded temperature data. Our peer-reviewed methodology incorporates more temperature observations than other available prod...

For Tmax and Tmin, you can use the gridded Berkeley Earth data. It is bias adjusted. berkeleyearth.org/data/

@jurassicparks.bsky.social

the bottom line. #1930sScam

Michael Parks

@jurassicparks.bsky.social

This is interesting not only from contemp climate perspective but also Dust Bowl history, which I’m writing about. My understanding is that beyond land use change it is a region with a naturally high amplitude (bad droughts also throughout 1800s) that groundwater has dampened…ie

Michael Parks

The data is confounded two ways, both by bare ground at the time and by a regional cooling effect more recently. (Very much not an expert tho)

@climateofgavin.bsky.social

Yes, I think that’s exactly right. We’re going to have one more post about this in a week or so that goes over exactly this issue.

Gavin Schmidt

Thanks. But this really needs to be properly written up.

@climateofgavin.bsky.social

I have a graduate student who’s working on this now.

Gavin Schmidt

Oh good. They need to play around with the various 'heat wave' definitions too and demonstrate the difference that the updated corrections make on the previous assessments (esp. what was in NCA4/EPA pages). I'll look forward to seeing the results.

qbas81.bsky.social

@qbas81.bsky.social

Interesting! I will read!

ayfkmomg

@ayfkmomfg.bsky.social

oh the irony

Jake Reyna

@jakereyna.bsky.social

opb.org90 years ago, the devastating Tillamook Burn series of fires beganStarting in 1933, a series of catastrophic wildfires — collectively known as the Tillamook Burn — destroyed tens of thousands of acres along the northern Northern Oregon Coast Range. The fires resulte...

Thanks for the data. All the talk about the Dust Bowl has me wondering how drought affected the west coast? 'In 1933, a series of catastrophic wildfires — the Tillamook Burn ... the fires erupted in the same region at approximately six-year intervals through 1951.' www.opb.org/article/2023...

Richard Heatwave Berler

@heatwavekgns.bsky.social

ams.confex.comAbstract: Sources of unexpected inaccuracies in temperature measurements (87th AMS Annual Meeting)

I gave a talk on related issues at the 14th Symposium on Meteorological Instrumentation and Observation: ams.confex.com/ams/87ANNUAL...

Richard Heatwave Berler

@heatwavekgns.bsky.social

For the fun of it, (unrelated to biases issue) I took all of the sites observing around 5-6 pm for November 11, 1911 to get a feel for how sharp the temperature grad was behind the famous ”blue norther” of that day:

@heatwavekgns.bsky.social

wow

Richard Heatwave Berler

During my time 38+ years operating the Laredo MMTS (1985-2023 #415060), I insisted on an obs time of midnight to avoid double TMax and double TMin artifacts!

WilliamRudisill

@wrudisill.bsky.social

Related to using tmin/tmax data from GHCNd — could someone comment on how adjustments also convert to daily average temp.? Is it just assumed the daily avg = 1/2(tmin + tmax)? This seems important for understanding seasonal anomalies as well as comparing against models

WilliamRudisill

@wrudisill.bsky.social