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cmacpherson.bsky.social
Ph.D. in Climate Science. Posts & opinions are my own.
11 posts 64 followers 107 following
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Posts 21 Comments 2

I can’t wait until these Santa Ana winds are over. Let’s get to the weekend and get some rain in SoCal.

submitted 30 days ago • 0 comments

Oh come ON now. This new JWST image is just ASTOUNDING. I feel like I’m falling looking into it, and that I would fall forever, and that I would enjoy it. NASA, ESA, CSA, K. McQuinn (STScI), J. DePasquale (STScI)

submitted 36 days ago • 65 comments

Just had a sample of the Eaton Fire ash that is in my driveway run on the department XRF. Is there titanium (new house paint)? Yup. Lead (old house paint)? You betcha. Heavy metals? Check. Treat that ash like it's toxic folks (because it is)

submitted 36 days ago • 121 comments

UGH. "Our weather pattern for next week features a deep trough of low pressure covering most of the nation`s interior with high pressure over the Pacific. That puts SoCal in northerly offshore flow seemingly forever." forecast.weather.gov/product.php?...

submitted 37 days ago • 0 comments

It’s so dry here.

submitted 37 days ago • 0 comments

physics of climate impacts 101: - Stuff gets hot (worse heatwaves) - Hot air holds more water vapor (heavier rainfall) - Hot air is thirstier air (higher drought risk) - Warm water is hurricane food (stronger storms) - Hot water expands and hot ice melts (sea level rise)

submitted 39 days ago • 310 comments

All surface temperature products for 2024 are now live. All show 2024 is the warmest year (very clearly). The estimates of the change since the pre-industrial (1850-1900) are more uncertain but range from 1.46 to 1.62ºC. It is therefore *likely* this was the first year that exceeded 1.5ºC.

submitted 43 days ago • 23 comments

Although first responders were successful in keeping the fire from JPL, over 150 JPLers have lost their homes. Here’s link to the Caltech/JPL disaster relief fund if you’re so inclined: caltech.imodules.com/controls/ema... Thanks for your support of our JPL family.

submitted 43 days ago • 2 comments

😢

submitted 43 days ago • 0 comments

Here's a schematic I published in this 2021 piece to illustrate how even a modest delay in onset of rainy season in Southern California can dramatically amplify wildfire risk by lengthening seasonal overlap between dry vegetation and strong offshore winds during Oct-Jan. #CAfire

submitted 43 days ago • 5 comments

Today is the date where the Contiguous U.S. has reached the midpoint of winter. Of course this is an average and varies quite a bit from west to east. 🥳

submitted 43 days ago • 4 comments

Every state in the contiguous U.S. is touched by drought now. Some entire states are in some degree of drought, including Florida.

submitted 72 days ago • 6 comments

Beautiful

submitted 78 days ago • 0 comments

As a reminder, land areas (where we live) are warming around twice as fast as the oceans. Subsequently, most of us are 'experiencing' temperatures rising faster than the global mean record. Data from NASA GISTEMPv4: data.giss.nasa.gov/gistemp/ ⚒️🧪

submitted 79 days ago • 9 comments

Landed in Salt Lake City for work - holy AQI.

submitted 79 days ago • 0 comments

submitted 90 days ago • 0 comments

This is from February of this year. And from what I’ve read it’s gotten worse since then. We’re in the purple. Sources below.

submitted 92 days ago • 1 comment

Really important to stress the non-linearity of the climate system.

submitted 93 days ago • 0 comments

However many times this was on your feed today, it wasn’t enough. Absolute perfection.

submitted 94 days ago • 5 comments

Gorgeous!

submitted 94 days ago • 0 comments

Gonna wait till we get the full view for the animated view but there's something cooking off the Pacific Northwest Coast. 👀

submitted 95 days ago • 2 comments