Monthly trends of methane emissions in Los Angeles from 2011 to 2015 inferred by CLARS-FTS observations
Item
Title (Dublin Core)
Monthly trends of methane emissions in Los Angeles from 2011 to 2015
inferred by CLARS-FTS observations
inferred by CLARS-FTS observations
Description (Dublin Core)
This paper presents an analysis of methane emissions from the Los Angeles Basin at monthly timescales across a 4-year time period – from September 2011 to August 2015. Using observations acquired by a ground-based near-infrared remote sensing instrument on Mount Wilson, California, combined with atmospheric CH<sub>4</sub>–CO<sub>2</sub> tracer–tracer correlations, we observed −18 to +22 % monthly variability in CH<sub>4</sub> : CO<sub>2</sub> from the annual mean in the Los Angeles Basin. Top-down estimates of methane emissions for the basin also exhibit significant monthly variability (−19 to +31 % from annual mean and a maximum month-to-month change of 47 %). During this period, methane emissions consistently peaked in the late summer/early fall and winter. The estimated annual methane emissions did not show a statistically significant trend over the 2011 to 2015 time period.
Creator (Dublin Core)
Wong, Clare K.
Pongetti, Thomas J.
Oda, Tom
Rao, Preeti
Gurney, Kevin R.
Newman, Sally
Duren, Riley M.
Miller, Charles E.
Yung, Yuk L.
Sander, Stanley P.
Date (Dublin Core)
2018-09-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-16-13121-2016
https://acp.copernicus.org/articles/16/13121/2016/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
