Urban-focused satellite CO2 observations from the Orbiting Carbon Observatory-3: A first look at the Los Angeles megacity

M Kiel, A Eldering, DD Roten, JC Lin, S Feng… - Remote Sensing of …, 2021 - Elsevier
Abstract NASA's Orbiting Carbon Observatory-3 (OCO-3) was designed to support the
quantification and monitoring of anthropogenic CO 2 emissions. Its Snapshot Area Map …

From COVID-19 to future electrification: Assessing traffic impacts on air quality by a machine-learning model

J Yang, Y Wen, Y Wang, S Zhang, JP Pinto… - Proceedings of the …, 2021 - pnas.org
The large fluctuations in traffic during the COVID-19 pandemic provide an unparalleled
opportunity to assess vehicle emission control efficacy. Here we develop a random-forest …

Methane emissions from the 2015 Aliso Canyon blowout in Los Angeles, CA

S Conley, G Franco, I Faloona, DR Blake, J Peischl… - Science, 2016 - science.org
Single-point failures of natural gas infrastructure can hamper methane emission control
strategies designed to mitigate climate change. The 23 October 2015 blowout of a well …

High-resolution US methane emissions inferred from an inversion of 2019 TROPOMI satellite data: contributions from individual states, urban areas, and landfills

H Nesser, DJ Jacob, JD Maasakkers… - Atmospheric …, 2024 - acp.copernicus.org
We quantify 2019 annual mean methane emissions in the contiguous US (CONUS) at
0.25°× 0.3125° resolution by inverse analysis of atmospheric methane columns measured …

Carbon dioxide and methane measurements from the Los Angeles Megacity Carbon Project–Part 1: calibration, urban enhancements, and uncertainty estimates

KR Verhulst, A Karion, J Kim… - Atmospheric …, 2017 - acp.copernicus.org
We report continuous surface observations of carbon dioxide (CO 2) and methane (CH 4)
from the Los Angeles (LA) Megacity Carbon Project during 2015. We devised a calibration …

Crosscutting of the pollutants and building ventilation systems: a literature review

A Zuazua-Ros, L de Brito Andrade… - … Science and Pollution …, 2023 - Springer
Considering the time spent in enclosed environments, it is essential to study the relationship
between pollutants and building ventilation systems to find whether the types and levels of …

Decadal decrease in Los Angeles methane emissions is much smaller than bottom-up estimates

ZC Zeng, T Pongetti, S Newman, T Oda… - Nature …, 2023 - nature.com
Methane, a powerful greenhouse gas, has a short atmospheric lifetime (~ 12 years), so that
emissions reductions will have a rapid impact on climate forcing. In megacities such as Los …

Los Angeles megacity: a high-resolution land–atmosphere modelling system for urban CO2 emissions

S Feng, T Lauvaux, S Newman, P Rao… - Atmospheric …, 2016 - acp.copernicus.org
Megacities are major sources of anthropogenic fossil fuel CO 2 (FFCO 2) emissions. The
spatial extents of these large urban systems cover areas of 10 000 km 2 or more with …

[HTML][HTML] A Lagrangian approach towards extracting signals of urban emissions from satellite observations of atmospheric column (): X-Stochastic Time …

D Wu, JC Lin, B Fasoli, T Oda, X Ye… - Geoscientific Model …, 2018 - gmd.copernicus.org
Urban regions are responsible for emitting significant amounts of fossil fuel carbon dioxide
(FFCO 2), and emissions at the finer, city scales are more uncertain than those aggregated …

Differential column measurements using compact solar-tracking spectrometers

J Chen, C Viatte, JK Hedelius, T Jones… - Atmospheric …, 2016 - acp.copernicus.org
We demonstrate the use of compact solar-tracking Fourier transform spectrometers (Bruker
EM27/SUN) for differential measurements of the column-averaged dry-air mole fractions of …