Abigail Swann, PhD

Abigail Swann, PhD

@ecoclimatelab.bsky.social

I study how climate works differently because of plants. Professor at @Univ. of Washington, views are my own. She/her

3.8K followers1.2K following561 posts

Abigail Swann, PhD
@ecoclimatelab.bsky.social

Decreases in ET over land do lead to more moisture being imported from the ocean to the land, but that isn't enough to overcome the large drop in relative humidity from the warming, and precip still drops with warming.

Abigail Swann, PhD
@ecoclimatelab.bsky.social

To figure this out we used perturbed parameter ensembles of simulations from an Earth system model (CESM2) where we changed parameters that control processes over land, with big impacts on land ET.

Abigail Swann, PhD reposted

Gavin Schmidt
@climateofgavin.bsky.social

Nice article on the so-called ‘Climate Working Group’ shenanigans including new excuses for why they can’t respond to the critics. thebulletin.org/2026/10/scie...

thebulletin.orgScientists say authors of a controversial government climate report made basic errorClimate contrarians questioned evidence of a human fingerprint on climate change in a report commissioned by the Energy Department. Critics say it was based on flawed analysis.

Abigail Swann, PhD reposted

Charlie Koven
@ckoven.bsky.social

New Preprint **Not yet peer-reviewed** How would the climate differ if we exceed a given temperature and then return to it via carbon dioxide removal, versus if we stop emitting CO2 at that temperature and let the climate system evolve over the same length of time?

egusphere.copernicus.orgA Comparison of Regional Climate Changes Under Idealized Zero-Emissions and Exceedance-and-Return ExperimentsAbstract. We examine the behavior of ten Earth system models under a set of idealized CO2 emissions-driven simulations to look at regional temperature and precipitation changes in response to either a...

Abigail Swann, PhD reposted

Gareth Funning
@gfun.earth

NSF GEO webinar summary: we have reduced programs from 15 down to 3, we have no deadlines, we have no guidelines on project size, duration or budget, we have no money

Abigail Swann, PhD
@ecoclimatelab.bsky.social

One thing we *didn't* find is a clear relationship between process representation and land carbon behavior. ESMs with dynamic nutrients, fires, more complex soils, and dynamic vegetation aren't distinguishable from those that lack these processes. (5/6)

Abigail Swann, PhD
@ecoclimatelab.bsky.social

We think that a much more systematic investigation of how process representation and parameter choices impact land carbon behavior is needed to understand these relationships and to adequately quantify the uncertainty in future land C. (6/6)

Abigail Swann, PhD
@ecoclimatelab.bsky.social

We looked across 10 emissions-driven ESMs and found that despite many differences there are coherent patterns of C gain and loss. C goes into vegetation first, mostly in the tropics. When emissions are zero or declining C is lost from the tropics, but keeps gaining in mid and high latitudes. (3/6)

Abigail Swann, PhD
@ecoclimatelab.bsky.social

The timing of vegetation C change is relatively consistent across ESMs, but they vary a lot in the timescale response of soil C. ESMs think that tropical carbon is the most vulnerable to loss, and this is despite the fact that they are missing many relevant ways that trees should die. (4/6)

Abigail Swann, PhD
@ecoclimatelab.bsky.social

Most CMIP type simulations look at periods of positive emissions of CO2, and that means that atmospheric CO2 is rising and photosynthesis tends to be elevated. But what happens to land carbon under zero or declining emissions? (2/6)

Abigail Swann, PhD reposted

The Weather & Climate Livestream
@wclivestream.bsky.social

‼️🌎 Submit your comment by MIDNIGHT to stop the politicization of the NSF! 🌍‼️ New rules would require all grants and grantees to pass ideological tests. You deserve the truth about the weather and climate of your world, uncensored. Read more and submit your comment here: www.aps.org/initiatives/...

aps.orgProposed changes to NSF proposalsShare your feedback about concerning, proposed, updated changes to National Science Foundation funding guidance. The comment period will close on Aug. 24, 2026, at 11:59 p.m. ET.
Abigail Swann, PhD
@ecoclimatelab.bsky.social

Does anyone have a link to an official source that shows the deadline to submit papers so they can be included in IPCC AR7 WGI? Web search gives me March 2027 for submission and October 2027 for acceptance but not from an official source.

Abigail Swann, PhD reposted

Carl T. Bergstrom
@carlbergstrom.com

Pro-wrestling executive Linda McMahon issued a letter today (in her role as US Secretary of Education) demanding that universities justify their existence and explain policies to the Trump administration by the end of 2026. Not sure what the endgame is, but it sure feels like a trap.

ed.govU.S. Secretary of Education Linda McMahon Issues National Call to Action to University Presidents and Governing BoardsToday, U.S. Secretary of Education Linda McMahon issued a national call to action to university presidents and governing boards, urging them to reaffirm higher education’s foundational commitments to ...

Abigail Swann, PhD reposted

Scott Doney
@scottdoney.bsky.social

🌊 From White to Green to Blue? Trajectories of Phytoplankton Communities in a Warming Southern Ocean - www.annualreviews.org/content/jour... @uslter.bsky.social @usocb.bsky.social @marine.rutgers.edu @bas.ac.uk c.uk @uvaenvisci.bsky.social @colorado.edu @uconn.bsky.social

annualreviews.orgFrom White to Green to Blue? Trajectories of Phytoplankton Communities in a Warming Southern OceanThe Southern Ocean is experiencing warming, melting of ice, and increasing wind. Predictions of increasing phytoplankton biomass associated with warming and declining glacial and sea ice are supported...

Abigail Swann, PhD reposted

Charlie Koven
@ckoven.bsky.social

We've just submitted the First Order Draft of the Working Group 1 contribution to the next IPCC climate report! And registration for reviewing it is open—interested experts, please sign up!

IPCC@ipcc.bsky.social

📣 Registration is now open for experts to review the First Order Draft of the Working Group I contribution to IPCC’s Seventh Assessment Report. Interested experts can register until 25 Sept 2026 👉https://bit.ly/4vi25cq The review starts 10 August until 2 October. Read more 👉 bit.ly/WGI7Fod

Abigail Swann, PhD
@ecoclimatelab.bsky.social

It is the 5 yr anniversary of the 2021 PNW heat wave, where Seattle reached locally unheard of temperatures of 108F/42.2C. Like most people here my family didn’t have AC for relief. I spent this week in the UK, where another major heatwave exposed how unprepared we are to manage our altered climate.

Abigail Swann, PhD reposted

Belinda Medlyn
@bmedlyn.bsky.social

I am hiring! My former postdocs have all gone on to great ongoing roles, so I am now looking for 2 new postdocs in dynamic vegetation modelling: Modelling vegetation-fire interactions in Australia Modelling Australian vegetation distributions Details linked below - please share!

Abigail Swann, PhD reposted

The Weather & Climate Livestream
@wclivestream.bsky.social

🌡️ Hot weather can have a big effect on ecosystems! 🌿 Prof. Lucas Vargas Zeppetello joined us to talk about the complicated role that temperature plays in determining the growth of ecosystems, and the work that remains to understand future climate impacts: www.youtube.com/watch?v=XrfC...

youtube.com50 Hours to Save America’s Forecasts, Weather and Climate Livestream Part 4YouTube video by The Weather & Climate Livestream
NPR@npr.org

The shallow, sunny waters of the reflecting pool are an ideal incubator for algae growth in the summertime. Experts say the recent renovation may have helped accelerate it.

n.prAlgae clouded Trump's vision for the Reflecting Pool. But scientists aren't surprisedThe shallow, sunny waters of the reflecting pool are an ideal incubator for algae growth in the summertime. Experts say the recent renovation may have helped accelerate it.

Abigail Swann, PhD reposted

ClimateBook
@climatebook.bsky.social

The land carbon cycle, and its fate in a warming world is clearly one of the big "known unknowns" in our climate future. It is particularly crucial to know what happens to the land carbon budget after we achieve net zero. All that carbon we have stocked so far is very vulnerable, being present

This post is unavailable.

Abigail Swann, PhD reposted

Adam Sobel
@adamsobel.bsky.social

The Livestream is in its second of 2 days, it has been amazing! Tune in to a continuous science-a-thon with great talks by brilliant scientists, hosted by other brilliant scientists. Plenty of audience Q&A. It's a really unique thing, actually. It'll be a document for history books.

The Weather & Climate Livestream@wclivestream.bsky.social

We're starting in 20 minutes! Our opening lineup includes: @adamsobel.bsky.social Jen Kay (UC Boulder) @zacklabe.com @ametsoc.org @drjeffmasters.bsky.social @solilyquy.bsky.social Nadir Jeevanjee (NOAA GFDL) Abby Swann (UW) Join us here: wclivestream.com/watch

Abigail Swann, PhD
@ecoclimatelab.bsky.social

I’ll be taking in 25 min at 9pm eastern! Tune in now or anytime through June 3!

The Weather & Climate Livestream@wclivestream.bsky.social

We're starting in 20 minutes! Our opening lineup includes: @adamsobel.bsky.social Jen Kay (UC Boulder) @zacklabe.com @ametsoc.org @drjeffmasters.bsky.social @solilyquy.bsky.social Nadir Jeevanjee (NOAA GFDL) Abby Swann (UW) Join us here: wclivestream.com/watch

Abigail Swann, PhD reposted

The Weather & Climate Livestream
@wclivestream.bsky.social

We're starting in 20 minutes! Our opening lineup includes: @adamsobel.bsky.social Jen Kay (UC Boulder) @zacklabe.com @ametsoc.org @drjeffmasters.bsky.social @solilyquy.bsky.social Nadir Jeevanjee (NOAA GFDL) Abby Swann (UW) Join us here: wclivestream.com/watch

The Weather & Climate Livestream@wclivestream.bsky.social

🚨 We begin our 50-hour broadcast today at 4pm 🚨 It's a showcase of incredible people and their phenomenal work- a celebration of the scientific community 🧪, defined broadly Use this link to subscribe to our YouTube channel and you'll get notified when we're live: wclivestream.com/watch

Abigail Swann, PhD
@ecoclimatelab.bsky.social

Tune in today to the start of the weather and climate livestream! I’m presenting at 9pm eastern time on why plants matter for climate.

The Weather & Climate Livestream@wclivestream.bsky.social

🚨 We begin our 50-hour broadcast today at 4pm 🚨 It's a showcase of incredible people and their phenomenal work- a celebration of the scientific community 🧪, defined broadly Use this link to subscribe to our YouTube channel and you'll get notified when we're live: wclivestream.com/watch

Abigail Swann, PhD reposted

Adam Sobel
@adamsobel.bsky.social

The Weather and Climate Livestream starts today at 4pm ET, and I am the first speaker, at 4:20! I'm going to talk about my own career, how it was enabled by many great people, federal agencies, and intellectual traditions, and the public benefits of the whole enterprise. wclivestream.com

wclivestream.comThe Weather & Climate LivestreamFor 50 hours from June 1st to June 3rd 2026, scientists and science support staff from across the US will share their work and answer your questions, all with the goal of saving America's forecasts to...

Abigail Swann, PhD reposted

AGU Science Policy
@aguscipolicy.bsky.social

📆Mark Your Calendars 📆 The Weather & Climate Livestream is streaming from June 1st to June 3rd⛅⛈️ Find more info here⬇️ wclivestream.com

wclivestream.comThe Weather & Climate LivestreamFor 50 hours from June 1st to June 3rd 2026, scientists and science support staff from across the US will share their work and answer your questions, all with the goal of saving America's forecasts to protect America’s future.