[Eoas-seminar] TODAY - Meteorology Seminar Series, Thursday, October 12, 3:30PM, 353 LOV - Juying Warner
eoas-seminar at lists.fsu.edu
eoas-seminar at lists.fsu.edu
Thu Oct 12 11:31:14 EDT 2017
Title: Thermal hyperspectral measurements from space for air quality and climate studies: A focus on AIRS trace gases
Juying Warner, University of Maryland, AOSC, College Park, Maryland, U.S.A, juying at atmos.umd.edu<mailto:juying at atmos.umd.edu>
Thermal hyperspectral sensors, Atmospheric Infrared Sounder (AIRS) on NASA EOS Aqua, the Infrared Atmospheric Sounding Interferometer (IASI) on the European MetOp platform, and NOAA’s Cross-track Infrared Sounder (CrIS), sense emitted infrared radiation from Earth to provide a 3-D look at our planet's weather and climate. With more than 2,000 channels sensing different regions of the atmosphere, each sensor creates global, 3-D maps of atmospheric temperature and humidity, cloud amounts and heights, concentrations of selected greenhouse and other trace gases, and many other atmospheric phenomena. As examples, this presentation provides recent measurements of AIRS carbon monoxide (CO) and ammonia (NH3) global products. We show emission differences from biomass burning between CO and NH3. We also show substantial increases in atmospheric ammonia concentrations (14-year) over several of the worlds major agricultural regions. The main sources of atmospheric NH3 are farming and animal husbandry involving reactive nitrogen ultimately derived from fertilizer use; rates of emission are also sensitive to climate change. Significant increasing trends are seen over the US (2.61% yr-1), the European Union (EU) (1.83% yr-1), and China (2.27% yr-1). These trends result from decreased scavenging by acid aerosols; increased soil temperatures, and increased fertilizer use. Over South Asia, increased NH3 emissions are masked by increased SO2 and NOx emissions, leading to increased aerosol loading and adverse health effects.
About the speaker:
Juying X. Warner received her Ph.D. in 1997 from The University of Maryland, where she studied the radiative transfer theory. After graduation, she worked in the Atmospheric Chemistry Division at the National Center for Atmospheric Research (NCAR) for five years. Dr. Warner began working at the Department of Atmospheric and Oceanic Science (AOSC) at University of Maryland College Park (UMD) in 2012. Dr. Warner has engaged in a wide range of studies concerning air quality, climate change, terrestrial and atmospheric environment, as well as atmospheric remote sensing techniques. She has, with her group, developed a suite of remote sensing algorithms and products (i.e., global distributions of atmospheric chemical species: CO, NH3, CH4, N2O, HNO3, etc.) using satellite instruments developed by NASA, NOAA, and ESA.
Academic Program Specialist - Meteorology I Earth, Ocean, & Atmospheric Science (EOAS) I Florida State University I 410 Love Building I 1017 Academic Way, Tallahassee, Florida 32306 I (850) 644-8582 I www.eoas.fsu.edu
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