HR: 1400h
AN: A43A-19    [Abstracts]
TI: Aerosol optical depth, backscattering profiles and column NO2 and SO2 measurements during March 2006 in Tenango del Aire, Mexico.
AU: * Hernandez, A
EM: andresrhs@yahoo.com
AF: Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Basaldud, R
EM: basaldud@atmosfera.unam.mx
AF: Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Grutter, M
EM: grutter@servidor.unam.mx
AF: Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Baumgardner, D
EM: darrel@servidor.unam.mx
AF: Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AU: Slusser, J
EM: sluss@uvb.nrel.colostate.edu
AF: Ultraviolet Monitoring and Research Program, Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO 80523, United States
AU: Steinbrecher, R
EM: Rainer.Steinbrecher@imk.fzk.de
AF: Institute of Meteorology and Climate Research, Atmospheric Environmental Division, Forschungszentrum Karlsruhe, Garmisch-Partenkirch, 82467, Germany
AU: Ruiz-Suarez, L G
EM:
AF: Centro de Ciencias de la Atmosfera, Universidad Nacional Autonoma de Mexico (UNAM), Mexico, DF 04510, Mexico
AB: The Tenango del Aire site (19.16°N, 98.86°W, 2380 masl) is located some 40 km SE from Mexico City in the Chalco Valley, where some pollution otflow has been predicted by air quality models. Direct and diffuse ground-based irradiance measurements have been made at this site during the MILAGRO field campaign by a UV-MultiFilter Rotating ShadowBand Radiometer (UV-MFRSR) at seven channels (300-, 305-, 311-, 317-, 325-, 332- and 368-nm with 2-nm nominal bandpass) from which several parameters could be calculated, including the aerosol optical depths (AOD), total ozone column (TOC), asymmetry factor (g) and aerosol single scattering albedo (SSA) via an optimal estimation algorithm. NO2 and SO2 column concentrations were measured with the zenith-sky DOAS (differential absorption spectrometer) technique. LIDAR (light detection and ranging) remote sensing of aerosols was done with a Vaisala Ceilometer Model LD40 from which mixing layer heights were estimated. The results of these measurements and a preliminary analysis of the possible sources of the aerosols are presented.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0394 Instruments and techniques
SC: Atmospheric Sciences [A]
MN: 2007 Joint Assembly