The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Download
Publications Copernicus
Download
Citation
Articles | Volume XLII-3/W12-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W12-2020, 407–412, 2020
https://doi.org/10.5194/isprs-archives-XLII-3-W12-2020-407-2020
Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W12-2020, 407–412, 2020
https://doi.org/10.5194/isprs-archives-XLII-3-W12-2020-407-2020

  06 Nov 2020

06 Nov 2020

SNOW ALBEDO REDUCTION IN CENTRAL ANDES BY ATMOSPHERIC AEROSOLS: CASE STUDY ON THE TUNUYÁN BASIN (ARGENTINA)

S. E. Puliafito1, T. Bolaño Ortiz1, R. Pascual1, A. Lopez-Noreña1, and L. Berná2 S. E. Puliafito et al.
  • 1Universidad Tecnológica Nacional / CONICET, Mendoza, Argentina
  • 2Universidad Tecnológica Nacional / ANPCyT, Mendoza, Argentina

Keywords: Snow albedo, MODIS, AOD, Snow Darkening Effect, WRF-Chem

Abstract. Changes in snow albedo (SA) on several basins of the central Andes of Argentina are associated with the possible deposition of light-absorbing particles (LAP) in the austral spring. To demonstrate this possibility, we correlate SA with daily data of snow cover (SC), aerosol optical depth (AOD) and land surface temperature (LST) available from the Moderate-Resolution Imaging Spectroradiometer (MODIS) on board NASA Terra satellite during 2000–2016, and other derived parameters such as days after albedo (DAS) and snow precipitation (SP) from the Tropical Rainfall Measuring Mission (TRMM). We used satellite pixels with 100% snow cover to obtain monthly average value of SA, LST, AOD, DAS and SP performing multiple regression analysis. Further, we analysed biomass burning emissions in northern Argentina using MODIS products MCD64 collection C6 as possible source for snow pollution. Aerosol deposition and trajectories were analysed using WRF-Chem atmospheric numerical prediction model, with inventories of regional anthropogenic emissions of own elaboration (lat. 0.025° × long. 0.025°) and the estimation of open burning emissions from the FINN global inventory (Fire INventory from NCAR).