Peter DeCarlo
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petedecarlo.bsky.social
Peter DeCarlo
@petedecarlo.bsky.social
Studies air indoors and out. Associate Professor at Johns Hopkins University. Air Pollution, Climate, Health. Science->Policy.
Here's a little preview of what we've been working on here at @johnshopkinsehe.bsky.social

www.youtube.com/watch?v=G0sd...
Chemicals in Our Air: From Climate to Health
YouTube video by Environmental Health & Engineering - Johns Hopkins
www.youtube.com
April 23, 2025 at 1:30 PM
Our in country partners at ICIMOD were instrumental in the success of this project, and communicated these results to local officials.

We collectively learned so much from this work, trained the next generation of scientists, and advanced our understanding of air quality. ❤️ NSF funding for this!
April 4, 2025 at 2:35 PM
Ben Werden from my group included additional air quality assessment papers for the KTM valley using AMS source apportionment and comparing with the filter based source apportionment (finding generally good agreement).
pubs.rsc.org/en/content/a...
and
pubs.acs.org/doi/10.1021/...
Pre-monsoon submicron aerosol composition and source contribution in the Kathmandu Valley, Nepal
The Kathmandu Valley in Nepal suffers from unhealthy air quality, with mean pre-monsoon submicron particulate matter concentration (PM1) of 40 μg m−3 and daily peaks over 75 μg m−3. A high-resolution ...
pubs.rsc.org
April 4, 2025 at 2:35 PM
Islam et al. from the Stone Group had a series of papers on Ambient Air Quality from different areas KTM valley and Lumbini and in different seasons:
acp.copernicus.org/articles/20/...
pubs.acs.org/doi/10.1021/...
and pubs.acs.org/doi/10.1021/...
Ambient air quality in the Kathmandu Valley, Nepal, during the pre-monsoon: concentrations and sources of particulate matter and trace gases
Abstract. The Kathmandu Valley in Nepal is a bowl-shaped urban basin that experiences severe air pollution that poses health risks to its 3.5 million inhabitants. As part of the Nepal Ambient Monitori...
acp.copernicus.org
April 4, 2025 at 2:35 PM
Doug Goetz from my group used a mini-Aerosol Mass Spectrometer to look at emission factors, size resolved composition, and mass spectral (chemical fingerprints) of these particulate sources:
Goetz et al. acp.copernicus.org/articles/18/...
and
pubs.acs.org/doi/10.1021/...
Speciated online PM1 from South Asian combustion sources – Part 1: Fuel-based emission factors and size distributions
Abstract. Combustion of biomass, garbage, and fossil fuels in South Asia has led to poor air quality in the region and has uncertain climate forcing impacts. Online measurements of submicron aerosol (...
acp.copernicus.org
April 4, 2025 at 2:35 PM
We started by characterizing south asian sources of air pollution: Stockwell et al. acp.copernicus.org/articles/16/... looked at trace gases and light-absorbing carbon.
Jayarathne et al. acp.copernicus.org/articles/18/... used filter based measurements to focus on particulate matter
ACP - Nepal Ambient Monitoring and Source Testing Experiment (NAMaSTE): emissions of trace gases and light-absorbing carbon from wood and dung cooking fires, garbage and crop residue burning, brick ki...
acp.copernicus.org
April 4, 2025 at 2:35 PM