Emissions of Methane, Nitrous Oxide, and Ammonia from California's San Joaquin Valley
Abstract
Airborne measurements of methane (CH4), nitrous oxide (N2O), and ammonia (NH3) were made aboard the NOAA P-3 during the CalNex (California Research at the Nexus of Air Quality and Climate Change) field campaign based out of Ontario, California in May and June, 2010. From these measurements, we determine emission fluxes of CH4 and N2O by integrating crosswind plume transects from different regions of the San Joaquin Valley, where most anthropogenic emissions of these greenhouse gases occur in California due to extensive agricultural activity. We compare derived emissions of CH4 and N2O to works which use inverse modeling to derive fluxes of CH4 (Santoni et al., 2012) and N2O (Xiang et al., 2012) from this region, as well as the current California Air Resources Board and EDGAR emissions inventories. Finally, we will present derived emissions of NH3 compared to the latest U.S. Environmental Protection Agency National Emissions Inventory from a similar integration analysis by Nowak et al. (2012).
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2012
- Bibcode:
- 2012AGUFM.A23I..01P
- Keywords:
-
- 0365 ATMOSPHERIC COMPOSITION AND STRUCTURE / Troposphere: composition and chemistry