Halldór
halbjorns.bsky.social
Halldór
@halbjorns.bsky.social
Scientist at the Icelandic Meteorological Office. Climate, weather and volcanoes..... That about sums it up.....
C4 plants are a different story, but there the benifits are only under drought stress
www.nature.com/articles/s43...
Climate change impacts on crop yields - Nature Reviews Earth & Environment
Warmer temperatures, increased CO2 concentrations and changing water availability affect cereal crop production. This Review examines changes in crop yield in response to these variables and discusses...
www.nature.com
August 3, 2025 at 3:59 PM
A recent review by experts on the effect on C3 plants states:
" It seems that within the three factors related to climate change investigated, the rise in atmospheric [CO2] is possibly the one more detrimental and difficult to face ..."
scholar.google.com/scholar?hl=e...
scholar.google.com
August 3, 2025 at 3:56 PM
Closing the lab will lead to more damages due to extreme weather at a time when vulnerability due to as well as the cost of extremes are rising. This makes no sense, and if this decision stands it will become a major problem for the US in years to come
May 7, 2025 at 7:38 PM
6)
The news that the US government intends to decimate GFDL for ideological reasons is scary. Weather facts are ideology independent. The weather doesn't care about your ideology, your belief system, - or even your existence. "It rains on the just as well as the unjust."
May 7, 2025 at 7:38 PM
5)
As an investment for the US government GFDL has paid many times over, with increased scientific knowledge and products (weather and climate models) that improve safety of the public and the economy.
May 7, 2025 at 7:36 PM
4) Professionally this was a very exciting time and an incredible environment to work in. The lab was extremely focused and the science was pursued with an admirable integrity.
May 7, 2025 at 7:36 PM
3) Others at GFDL were focused on atmospheric models, on climate model development, and there was a group developing the US hurricane model, - to name a few projects. Since I left they also developed the FV3 core which is the basis of the US weather forecasting model (GFS).
May 7, 2025 at 7:35 PM
2) I worked in the Ocean group using the groups models to pursue questions in oceanography about the large scale structure of the ocean. These questions relate to climate system dynamics and are of relevance for the stability of AMOC, inter-hemispheric linkages and future climate on the planet.
May 7, 2025 at 7:32 PM
Elin few days ago on the BBC
March 1, 2025 at 5:55 PM
Ég held með sandsílinu!
January 27, 2025 at 10:25 PM
10 eruptions in Reykjanesskagi since March 2021. I have had to fly into 8 of them. This one is a medium size one for this sequence, not as big as the last two, but big enough.....
November 21, 2024 at 2:50 PM

Bæði þessi atriði skipta miklu fyrir loftslagsmarkmið. Án þess að tryggt sé að virkjun til orkuskipta rati í orkuskipti nást loftslagsmarkmið ekki. Án þess að réttindi almennings séu tryggð eru réttlát umskipti í hættu og þarmeð stuðningur við aðgerðir. Það fara 5% raforkunnar til almennings.
November 17, 2024 at 1:33 PM