タイトル(掲載誌)Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集
一般注記type:text
[ABSTRACT]Collocated observations of aerosol optical parameters, radiative fluxes in the longwave (0.4-50μm) and shortwave (0.3-3 μm) spectral regions were used to quantify aerosol radiative forcing in the longwave (LW) and shortwave (SW) spectral regions over an Indian urban site, Pune during October 2004 to May 2005. Aerosol optical parameters derived from a Prede Sun/Sky radiometer such as aerosol optical depth (AOD), single scattering albedo, asymmetry parameter, TOMS column ozone and MODIS water vapor were used in Santa Barbara Discrete ordinate Rdaitive Transfer model (SBDART) to derive short and long wave radiative fluxes. Short wave fluxes were found to be comparing well with the real time observed fluxes from a Short wave Pyranometer. The under estimation of modeled long wave fluxes got improved and found to be comparable with observed fluxes from a Precision infrared radiometer, on the inclusion of six hourly NCEP profiles of temperature and humidity in SBDART model. ‘No aerosol’ fluxes were also derived using SBDART in both the spectral region. The differences in fluxes with and without aerosol conditions were calculated to derive radiative forcing. The short wave radiative forcing during different seasons viz. Post monsoon (October, November), winter (Dec-Feb) and Pre-monsoon (March- May) respectively found to be -36, -33 and -44 Wm-2 at the surface and +0.5,-0.55, +0.4 Wm-2 at the Top of the Atmosphere (TOA) . The corresponding long wave enhancement found to be +8.5, +8, +10.5 Wm-2 at the surface and, +3.5, +3 and +4.7 Wm-2 at TOA. The study suggests that around 23-25% of aerosol cooling in the short wave region is being compensated by long wave enhancement at the surface.
一次資料へのリンクURLhttps://opac.ll.chiba-u.jp/da/curator/106799/CeresIntlSympo16-P147.pdf
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)