David John Gagne II
@djgagnedos.bsky.social
Machine Learning Scientist at NSF NCAR in Boulder, CO. Interested in the linkages among AI, weather, climate, disasters, and impacts.
Following the references for this letter leads to an even more entertaining citation.
October 23, 2025 at 10:56 AM
Following the references for this letter leads to an even more entertaining citation.
Coaches as Crazy Taxi passengers: Kalen DeBoer vs James Franklin.
October 13, 2025 at 10:59 PM
Coaches as Crazy Taxi passengers: Kalen DeBoer vs James Franklin.
Checking my bkuesky feed this week/month/year.
September 12, 2025 at 11:05 AM
Checking my bkuesky feed this week/month/year.
PSA: the wind components in the GFS and GEFS cube sphere tile netCDF files are already in Earth-relative coordinates. Figured this out by making this plot after two days of wondering why the transformed wind vectors wouldn't line up across tiles.
August 4, 2025 at 9:05 PM
PSA: the wind components in the GFS and GEFS cube sphere tile netCDF files are already in Earth-relative coordinates. Figured this out by making this plot after two days of wondering why the transformed wind vectors wouldn't line up across tiles.
I got to visit Gary England’s studio back in 2006 with Dr. Carr’s freshman meteorology mentoring group. RIP Gary.
June 11, 2025 at 1:49 PM
I got to visit Gary England’s studio back in 2006 with Dr. Carr’s freshman meteorology mentoring group. RIP Gary.
The guy surrendered and is now in police custody.
June 4, 2025 at 9:11 PM
The guy surrendered and is now in police custody.
Dude on rock. Don’t want to show cops but there’s a bunch talking to him from a distance.
June 4, 2025 at 8:56 PM
Dude on rock. Don’t want to show cops but there’s a bunch talking to him from a distance.
Good to know that our AI company overlords are already contemplating the Dr. Strangelove plan for riding out AGI.
May 15, 2025 at 11:21 PM
Good to know that our AI company overlords are already contemplating the Dr. Strangelove plan for riding out AGI.
Machine learning with ECMWF ICs leaning Kansas with some hope for Wray. GEFS and MPAS initial conditions leaning OK and eastern KS. Choose wisely. www2.mmm.ucar.edu/projects/nca...
May 15, 2025 at 7:12 PM
Machine learning with ECMWF ICs leaning Kansas with some hope for Wray. GEFS and MPAS initial conditions leaning OK and eastern KS. Choose wisely. www2.mmm.ucar.edu/projects/nca...
In tales of WTF is going on with our data, I discovered that ERA5 has 20 Pa differences between the surface pressure and mean sea level pressure over the ocean in weird wavy patterns. MSLP is also smoother. GFS has much smaller variations (~2 Pa). Any idea what might be going on?
April 30, 2025 at 11:22 PM
In tales of WTF is going on with our data, I discovered that ERA5 has 20 Pa differences between the surface pressure and mean sea level pressure over the ocean in weird wavy patterns. MSLP is also smoother. GFS has much smaller variations (~2 Pa). Any idea what might be going on?
San Marino and Monaco only get a 10% tariff rate compared with the rest of the EU at 20%. I am sure that little loophole won't get exploited at all. Source: www.cnbc.com/2025/04/02/t...
April 3, 2025 at 12:22 AM
San Marino and Monaco only get a 10% tariff rate compared with the rest of the EU at 20%. I am sure that little loophole won't get exploited at all. Source: www.cnbc.com/2025/04/02/t...
It looks like there are 2 velocity couplets in the storm that just crossed into Mississippi. If we are already getting this kind of situation this early, it’s going to be a very long day for the tornado threat.
March 15, 2025 at 3:31 PM
It looks like there are 2 velocity couplets in the storm that just crossed into Mississippi. If we are already getting this kind of situation this early, it’s going to be a very long day for the tornado threat.
Looks like downslope winds on the south side of Boulder are warming things up quite a bit. Everyone else is stuck with the effects of overnight radiational cooling.
January 21, 2025 at 4:49 PM
Looks like downslope winds on the south side of Boulder are warming things up quite a bit. Everyone else is stuck with the effects of overnight radiational cooling.
Open AI is so desperate for more high quality training data that they have reinvented expert systems.
December 21, 2024 at 2:54 PM
Open AI is so desperate for more high quality training data that they have reinvented expert systems.
Shocked and saddened to hear about the passing of Dr. Berrien Moore. In my time at OU he was a big advocate for improving the student experience in AGS and facilitated moving the Oklahoma Weather Lab to its bigger space. Even with all his commitments he still made time to chat and listen. RIP.
December 17, 2024 at 9:29 PM
Shocked and saddened to hear about the passing of Dr. Berrien Moore. In my time at OU he was a big advocate for improving the student experience in AGS and facilitated moving the Oklahoma Weather Lab to its bigger space. Even with all his commitments he still made time to chat and listen. RIP.
When I visited China a few weeks ago for a WMO conference, I got to see some of the investments they are putting into international training and it is quite substantial like this giant building. Article is a great dive into what is going on behind the scenes and the implications.
December 11, 2024 at 1:52 PM
When I visited China a few weeks ago for a WMO conference, I got to see some of the investments they are putting into international training and it is quite substantial like this giant building. Article is a great dive into what is going on behind the scenes and the implications.
Investigating some geophysical fluid dynamics during lunch.
December 9, 2024 at 6:26 PM
Investigating some geophysical fluid dynamics during lunch.
On my way to #AGU24 to present my group's work on AI NWP (Tues) and uncertainty quantification (Wed). AI NWP: agu.confex.com/agu/agu24/me...; UQ: agu.confex.com/agu/agu24/me...
December 7, 2024 at 3:55 PM
On my way to #AGU24 to present my group's work on AI NWP (Tues) and uncertainty quantification (Wed). AI NWP: agu.confex.com/agu/agu24/me...; UQ: agu.confex.com/agu/agu24/me...
If you're looking for a grounded but optimistic take on addressing environmental challenges, I highly recommend reading Susan Solomon's new book Solvable. It has succinct and compelling histories of ozone, smog and climate change reforms from science and policy perspectives. #Booksky
November 18, 2024 at 5:33 PM
If you're looking for a grounded but optimistic take on addressing environmental challenges, I highly recommend reading Susan Solomon's new book Solvable. It has succinct and compelling histories of ozone, smog and climate change reforms from science and policy perspectives. #Booksky
I went down the rabbit hole of finding the underlying source code for numpy.interp. To my horror, it is full of goto statements!
October 25, 2024 at 3:35 AM
I went down the rabbit hole of finding the underlying source code for numpy.interp. To my horror, it is full of goto statements!
Updated plot with diameters in miles and valid times in UTC for easy comparison with wapo.st/4gXWDFq. Landfall diameter at 10-10 0 UTC looks to be between 300-400 miles, or between the diameters of Ian and Ivan.
October 7, 2024 at 6:49 PM
Updated plot with diameters in miles and valid times in UTC for easy comparison with wapo.st/4gXWDFq. Landfall diameter at 10-10 0 UTC looks to be between 300-400 miles, or between the diameters of Ian and Ivan.
Here's a really rough graphic of northeast quadrant tropical storm force wind radii from various model sources. The consistent story is that Milton will get a fair bit larger before landfall with a lot of spread in exact size. Data from hurricanes.ral.ucar.edu/repository/d... which will update.
October 7, 2024 at 6:20 PM
Here's a really rough graphic of northeast quadrant tropical storm force wind radii from various model sources. The consistent story is that Milton will get a fair bit larger before landfall with a lot of spread in exact size. Data from hurricanes.ral.ucar.edu/repository/d... which will update.