Jan Polcher
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polcher.bsky.social
Jan Polcher
@polcher.bsky.social
60 followers 22 following 17 posts

Climate scientist and aviation fan ... Not afraid of contradictions !

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Environmental science 62%
Geography 20%
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polcher.bsky.social
Jan Polcher @polcher.bsky.social · Jul 31
Bon appétit 😄

Reposted by Jan Polcher‬

gewex.bsky.social
GEWEX @gewex.bsky.social · Jun 13
The newest Crosscutting initiative within the GEWEX Hydroclimatology Panel is the River Experiment, or RivEx, led by a team determined to standardize the comparison of river models. Read up on RivEx in the latest issue of the GEWEX Quarterly, starting on page 5, at www.gewex.org/gewex-conten....

Reposted by Jan Polcher‬

olliemilman.bsky.social
Oliver Milman @olliemilman.bsky.social · Jun 11
Climate.gov was one of world's leading sources of information on climate change.

The Trump admin has now fired all of its staff and it will now likely shut down (or maybe turned into a Trump-friendly site pushing falsehoods about climate) www.theguardian.com/us-news/2025...
Climate.gov Home
Science & information for a climate-smart nation
Climate.gov

Reposted by Jan Polcher‬

nytimes.com
The New York Times @nytimes.com · Jun 3
Thousands of scientists, academics, physicians and researchers have responded to President Trump’s executive order about “restoring a gold standard for science” saying it would destroy scientific independence.
The White House Gutted Science Funding. Now It Wants to ‘Correct’ Research.
Thousands of scientists, academics, physicians and researchers have responded to the administration’s executive order about “restoring a gold standard for science.”
trib.al

Reposted by Oliver L. Phillips, Kristie L. Ebi, Simon L. Lewis , and 8 more

climateofgavin.bsky.social
Gavin Schmidt @climateofgavin.bsky.social · May 31
Last day at the GISS building (Wed. May 28th). 🥲
Photo of the a large group of GISS employees/colleagues in front of Toms Restaurant with a prominent street sign saying "112th St" taken from the middle of Broadway. Credit: Tricia Baron.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Apr 9
A typical case of killing the messenger instead of fixing the problem. The international community will support GFDL as it is the leading institution on climate research.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Mar 21
I hope this report of UNESCO will lead to a better understanding by the society of the risk posed and trigger more research to better quantify the expected changes in water resources.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Mar 18
This will be an important conference!

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Mar 1
Let the market punish those who are not exemplary Citizen 😄

Reposted by Jan Polcher‬, Rasmus K. Storm, Deborah M. Kolb

lizcheney.bsky.social
Liz Cheney @lizcheney.bsky.social · Feb 28
History will remember this day— when an American President and Vice President abandoned all we stand for.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Feb 28
How are you going to fly your bird without NOAA providing the observations and forecasts ? These people in charge have no idea what it takes to keep aviation (among other things !) functioning.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Feb 27
Thanks for the clarification

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Feb 15
I think I saw your little bird when I landed in SYD yesterday 😀

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Feb 15
If we don't stand up for science then truth has no meaning anymore !

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Feb 14
That was a productive meeting!

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Feb 5
An important seminar for the Land surface modelling community!

Reposted by Jan Polcher‬

gewex.bsky.social
GEWEX @gewex.bsky.social · Jan 16
The latest GEWEX E-News is now available at gewexorg.optin.com/newsletter/a...

This edition includes the latest calls for papers, position announcements, meeting details and other news of interest.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Nov 22
Welcome to BlueSky! GEWEX will hopefully also help society adapt to the water resources of a warmer climate by coordinating the scientific community.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Nov 16
Made me think why not develop some type of "Turing tests" for geophysical models (AI, parsimoneous or physical based)? There are a number of perturbations (like 2xCO2) where we know what the characteristics of the response should be on physical arguments.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Nov 13
Yes produce more high quality knowledge which will not be contradicted by facts down the road 😄

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Nov 13
Should climate science not take pride in having provided society with very similar results for the last 30 years ? So it might be good enough to propose projections every 10 years, when our understanding has indeed progressed. Earth observation needs to be intensified to inform society and science.

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Nov 12
It is going to be an issue that we cannot have the same numbers for the global water cycle : total precipitation, water discharge from the continents, total water mass, ... Our observing system is not to the level needed for these variables which are so critical for managing our resources!

polcher.bsky.social
Jan Polcher @polcher.bsky.social · Oct 13
Thanks for posting also on Blusky ...so I can finally ditch the network of that mad man !