You are here:
Source Sector and Region Contributions to BC and PM2.5 in Central Asia
Citation:
Kulkarni, S., N. Sobhani, J. Miller-Schulz, M. Shafer, J. Schauer, P. Solomon, P. Saide, S. Spak, Y. Cheng, H. Denier van der Gon, Z. Lu, D. Streets, G. Janssens-Maenhout, C. Wiedinmyer, J. Lantz, M. Artamonova, B. Chen, S. Imashev, L. Sverdlik, J. Deminter, B. Adhikary, A. D'Allura, C. Wei, AND G. Carmichael. Source Sector and Region Contributions to BC and PM2.5 in Central Asia. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, Germany, 15(4):1683-1705, (2015).
Impact/Purpose:
The National Exposure Research Laboratory’s (NERL’s) Human Exposure and Atmospheric Sciences Division (HEASD) conducts research in support of EPA’s mission to protect human health and the environment. HEASD’s research program supports Goal 1 (Clean Air) and Goal 4 (Healthy People) of EPA’s strategic plan. More specifically, our division conducts research to characterize the movement of pollutants from the source to contact with humans. Our multidisciplinary research program produces Methods, Measurements, and Models to identify relationships between and characterize processes that link source emissions, environmental concentrations, human exposures, and target-tissue dose. The impact of these tools is improved regulatory programs and policies for EPA.
Description:
Particulate matter (PM) mass concentrations, seasonal cycles, source sector and source region contributions in Central Asia (CA) are analyzed for the period April 2008-July 2009 using the STEM chemical transport model and modeled meteorology from the WRF model. Predicted AOD values (annual mean value ~0.2) in CA vary seasonally with lowest values in the winter. Surface PM2.5 concentrations (annual mean value ~10 µg/m3 )also exhibit a seasonal cycle, with peak values and largest variability in the spring/summer, and lowest values and variability in the winter (hourly values from 2 – 90 mg/m3). Surface concentrations of BC (mean value ~0.1 µg/m
URLs/Downloads:
FINAL FINAL CENASIAPAPER_TEXTFIGS_CLEAN_V28AUG2014_NOYELLOW.PDF (PDF, NA pp, 7237.769 KB, about PDF)Atmospheric Chemistry and Physics