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Jonathan Colmer

@jmcolmer.bsky.social
2.7K followers 510 following 50 posts

Associate Professor at UVA Econ | Co-Founder & Director of the Environmental Inequality Lab | Environmental Econ, Growth & Dev, Labor, Public | PhD from LSE | 🇬🇧 in 🇺🇸 | www.jonathancolmer.com

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Reposted by Jonathan Colmer
UVA Economics @uvaeconomics.bsky.social · 07/09/2026
In a new working paper, our colleague Jonathan Colmer finds that wildfires have long-lasting economic consequences for affected communities. Read the paper: www.nber.org/papers/w35675 Read a summary of the findings: today.ucsd.edu/story/wildfi...
today.ucsd.edu
Wildfire Losses Have Lasting Economic Consequences for Homeowners
A new National Bureau of Economic Research from the University of California San Diego shows that wildfire damage can have long-term economic consequences for households, resulting in income losses, r...
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Jonathan Colmer @jmcolmer.bsky.social · 23/03/2026
The program begins with an intensive "RA bootcamp" followed by placement on faculty-led project teams, providing a strong foundation for pre-doctoral positions or graduate study. Applications are reviewed on a rolling basis (apply before April 15, 2026).
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Jonathan Colmer @jmcolmer.bsky.social · 23/03/2026
Please Share! The Environmental Inequality Lab is hosting it's second undergraduate research training program in environmental and energy economics this summer & it's open to all (with current U.S. work authorization)! Full-time, funded, in-person, 10-weeks. More details here tinyurl.com/EEE-URTP
tinyurl.com
UVA_EEE_URTP_Application_Undergrad.pdf
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Reposted by Jonathan Colmer
MIT Press @mitpress.bsky.social · 18/01/2026
New and #OpenAccess in the January issue of the Review of Economics and Statistics: @jmcolmer.bsky.social and @jenniferdoleac.bsky.social consider whether restricting the concealed carry of firearms mitigates or exacerbates the effect of temperature on violence. @restatjournal.bsky.social
direct.mit.edu
Access to Guns in the Heat of the Moment: More Restrictive Gun Laws Mitigate the Effect of Temperature on Violence
Abstract. Gun violence is a major problem in the United States, and extensive prior work has shown that higher temperatures increase violent behavior. We consider whether restricting the concealed…
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2025
We're hiring at least one pre-doc this year! Please share and apply! Review will begin 11/3/25. jobs.virginia.edu/us/en/job/R0...
jobs.virginia.edu
Pre-Doctoral Associate, Frank Batten School of Leadership and Public Policy in Charlottesville, Virginia, United States of America | Other at University of Virginia
Apply for Pre-Doctoral Associate, Frank Batten School of Leadership and Public Policy job with University of Virginia in Charlottesville, Virginia, United States of America. Other at University of Vir...
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Reposted by Jonathan Colmer
VoxDev @voxdev.bsky.social · 15/04/2025
🆕 Do carbon offsets work? Evidence from the world’s largest offset programme Today on VoxDev, Raphael Calel (Georgetown University), Jonathan Colmer (University of Virginia), Antoine Dechezleprêtre (OECD) & Matthieu Glachant (Mines Paris) outline research on India: voxdev.org/topic/energy...
voxdev.org
Do carbon offsets work? Evidence from the world’s largest offset programme
Carbon offset programmes allow polluters to pay others to reduce emissions on their behalf. In theory, this can achieve the same emissions reductions at a lower cost, but only if the payment actually ...
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Jonathan Colmer @jmcolmer.bsky.social · 14/01/2025
Austin people, I'm in town Thursday until Monday evening. If anyone has interest in tennis, let me know!
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Jonathan Colmer @jmcolmer.bsky.social · 18/12/2024
Yes please
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Jonathan Colmer @jmcolmer.bsky.social · 24/11/2024
If there's room for one more :)
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Jonathan Colmer @jmcolmer.bsky.social · 22/11/2024
Previous RAs have gone onto graduate programs at Columbia, Berkeley, and positions at the U.S. Census Bureau (you don't have to end up doing a PhD, a pre doc is a great way to find out if it's something you really want to do!)
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Jonathan Colmer @jmcolmer.bsky.social · 22/11/2024
You'll be joining a growing team of other pre docs and RAs and other env econ researchers (@ajsw.info, currently at Stanford, and Jenna Anders, currently at Berkeley, are joining UVA too!) Heavy focus on mentoring and training. V competitive salary & lower cost of living.
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Jonathan Colmer @jmcolmer.bsky.social · 22/11/2024
The Environmental Inequality Lab is hiring 2 new pre-docs to join our team! We do research in environmental economics but those with interests in labor/public/urban/spatial/development economics should def apply. Apply here: tinyurl.com/EIL-pre-doc @AereOrg
tinyurl.com
Pre-Doctoral Fellow, Department of Economics and Frank Batten School of Leadership & Public Policy in Charlottesville, Virginia, United States of America | Research at University of Virginia
Apply for Pre-Doctoral Fellow, Department of Economics and Frank Batten School of Leadership & Public Policy job with University of Virginia in Charlottesville, Virginia, United States of America. Res...
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Reposted by Jonathan Colmer
Steve Cicala @stevecicala.bsky.social · 07/11/2024
Welcome to the new arrivals. Here's a starter pack of Energy/Environmental economists to get you going: bsky.app/starter-pack...
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Reposted by Jonathan Colmer
Seema Jayachandran @seema.bsky.social · 04/11/2024
Thanks to @nberpubs.bsky.social for summarizing our study on payments for ecosystem services (PES). With a simple contract tweak, the cost to conserve additional forest thru PES plummeted. The cost per hectare shown here maps to permanently averting a ton of CO2 for <$5. www.nber.org/digest/20241...
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Reposted by Jonathan Colmer
Programme on Innovation and Diffusion @poid-lse.bsky.social · 04/11/2024
Read the latest @CEP_LSE #CentrePiece article on designing carbon markets that deliver change, by Jonathan Colmer, Ralf Martin @mondpanther.bsky.social , Mirabelle Muuls, and Ulrich Wagner poid.lse.ac.uk/PUBLICATIONS...
poid.lse.ac.uk
in brief... Designing carbon markets that deliver change
Ever since the European Union created its market-based carbon policy, governments and businesses have been keen to assess its impact. Jonathan Colmer, Ralf Martin, Mirabelle Muûls and Ulrich Wagner explain why analysing the effectiveness of such policies can be complex - and why hard proof that carbon markets can achieve what they set out to do is scarce.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
Brilliant, thanks Rei! We're certainly refining as we go and are happy to incorporate new ideas and suggestions to make them useful for decision-makers.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
And I forgot to add... because I'm still used to writing on Twitter where we did a longer thread earlier before Milton made landfall that provided this context, that this is work is in partnership with the EIF team at the U.S. Census Bureau led by @johnvoorheis.bsky.social!
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
The population characteristics of those exposed to excessive rainfall and tropical storm-force winds were similar to the population that was forecasted to be exposed.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
Approximately 8.9 million people received more than 5 inches of rainfall within 24 hours, an amount high enough to trigger flash flooding. The affected population had a higher proportion of older, Hispanic, and low-income individuals, compared to national averages.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
Approximately 21.5 million people experienced tropical storm-force winds. The affected population had a higher proportion of older, Hispanic, non-Hispanic Black, and low-income individuals compared to national averages.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
The population exposed to hurricane-force winds included a larger share of Hispanic, non-Hispanic Black, under-18, and low-income individuals than the population that was forecasted to be exposed with a high probability.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
Approximately 3.6 million people were exposed to hurricane-force winds. The affected population had a higher proportion of older, Hispanic, and low-income individuals compared to national averages.
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
Identifying who is exposed is crucial to developing targeted, efficient, and equitable responses. We have now finalized our post-landfall report for Hurricane Milton (took us longer than expected, but we'll be quicker next time). www.environmental-inequality-lab.org/real-time-an...
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Jonathan Colmer @jmcolmer.bsky.social · 30/10/2024
The Environmental Inequality Lab team have been working to build frameworks for real-time analysis of natural disasters and extreme weather events. The goal is to forecast vulnerability, identifying who, rather than just where, will be exposed.
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Jonathan Colmer @jmcolmer.bsky.social · 18/10/2024
This is the data we're using drive.google.com/file/d/14b8H...
drive.google.com
EIF_March_2023.pdf
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Jonathan Colmer @jmcolmer.bsky.social · 18/10/2024
We're looking into highways in our analysis of mobility to see where people move. The benefit of what we're doing over the earlier work is that we data on individuals, where they live and their income. We're not relying on data on the characteristics of places, e.g., median income of a tract etc.
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Jonathan Colmer @jmcolmer.bsky.social · 18/10/2024
Have you come across the wonder weeks? We found it was quite a cute for our two.
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Jonathan Colmer @jmcolmer.bsky.social · 18/10/2024
We do analysis looking at variation in exposure throughout the wealth distribution as well as the income distribution and find very similar results. One way of thinking about the findings is that income/wealth isn't isn't sufficient to explain differences in exposure.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
Many questions remain! For example, it is possible, likely even, that income could affect env' quality in ways not captured in this study. e.g. aggregate increases in income for a community could affect env' quality through collective action. Someone should look into that.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
Taking the implied elasticity from this exercise, we recalculate that harmonizing the Black-White income gap would be associated with a 7% reduction in the Black-White pollution gap. Very similar to what was implied by the descriptive facts.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
Winning the lottery is associated with a small but persistent reduction in ambient air pollution. This effect is similar for Black and White individuals, and driven entirely by those that move from their initial location.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
These descriptive facts are compelling, but they don't tell us about the causal effect of a change in income or wealth on environmental quality. To get at that we exploit information on lottery winners to explore the extent to which a large windfall -> reductions in pollution
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
This pattern also holds within cities, and for other pollutants. The pollution-income gradients are slightly steeper, but still very inelastic. In 2016 a 1% increase in income for Black individuals is associated with a -0.0167% reduction in ambient air pollution.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
Simple back-of-the-envelope calculations show that if we were to close the Black-White income gap (a 60% increase in income!) that the Black-White pollution gap would shrink by ~10%. That's not very responsive.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
We show that at every percentile of the national income distribution, Black, Hispanic, and Asian individuals are exposed to higher levels of ambient air pollution that White individuals. We show this pattern was true in 1984 and holds over time. This is how it looked in 2016.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
We make progress using the universe of tax returns, high-res,remote sensing measurements of ambient air pollution, and linked individual-level demographics and residential address histories, which means we have individual, race-specific income at the same resolution as pollution
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
Answering this question has been hard. Measurement of air quality has been patchy, individual income data (by race) not typically available at the same spatial resolution as pollution varies, and most of the time we just end up with correlations rather than causal insights.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
While there are many reasons environmental inequality might exist, economists have often raised the idea that environmental inequality may be rooted in various forms of economic inequality. We ask if this narrative holds water.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2024
Hi #EconSky, I'm very excited to present our new working paper (nber.org/papers/w33050) at Brown today! A mid-sized 🧵 TL;DR: "Racial differences in income unable to explain a meaningful share of gaps in ambient air pollution exposure."
nber.org
Income, Wealth, and Environmental Inequality in the United States
Founded in 1920, the NBER is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, an...
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Jonathan Colmer @jmcolmer.bsky.social · 02/01/2024
#EconSky We’re excited to be hiring a pre-doctoral research fellow in environmental economics starting summer/fall 2024! Apply here: tinyurl.com/EIL-pre-doc-24 Please share/apply!
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Jonathan Colmer @jmcolmer.bsky.social · 15/12/2023
#EconSky #ETP-Tour I will be in San Antonio for the AEAs. @paulgp.com and I are playing tennis at some point on the Friday. If anyone else is looking to play tennis let me know as I'd be keen to play Saturday as well.
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Reposted by Jonathan Colmer
Joshua Goodman @joshua-goodman.com · 10/11/2023
If you're a senior male economist and would be interested in discussing the drafting of an open letter re the newly announced IZA leadership change, e-mail me. Female econs are rightly tired of the burden of such efforts falling on them.
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Jonathan Colmer @jmcolmer.bsky.social · 10/11/2023
#EconSky On January 1st 2024, I will be ending my association with IZA. My previous association will not be invisible, instead it will appear as strikethrough text on public materials.
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Jonathan Colmer @jmcolmer.bsky.social · 27/10/2023
#EconSky Two thumbs up from the Department! Thank you to everyone that wrote my letters, I greatly appreciate the support! Let's go!
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2023
For sure!
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2023
Modern empirical IO, by which I define (idiosyncratically) as model-based approaches that sometimes (but not necessarily) uses research designs to think about identifying parameters. I'm thinking of the parallel of Mar Reguant, Koichiro Ito, Ryan Kellogg types that do IO and energy, but IO and Ag.
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Jonathan Colmer @jmcolmer.bsky.social · 17/10/2023
#Econsky Who is doing modern IO in the Ag Space. Paul Scott and Will Rafey come to mind but I'm not thinking very deeply. Help me broaden my horizons, @marcfbellemare.bsky.social @jeffbloem.bsky.social :)
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Jonathan Colmer @jmcolmer.bsky.social · 11/10/2023
"Does Pricing Carbon Mitigate Climate Change? Firm-Level Evidence from the European Union Emissions Trading Scheme" :) The latest version with new model can be found here: tinyurl.com/ETSfirms
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Jonathan Colmer @jmcolmer.bsky.social · 11/10/2023
ACCEPTED! FREAKING RESTUD! YES! #EconSky!
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Jonathan Colmer @jmcolmer.bsky.social · 11/10/2023
2 down, 2 to go! #Resubmission #EconSky
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