Development of a spectroradiometer system for observing UVVISNIR skylight

[ABSTRACT]Images observed with satellite sensors are affected by Earth's atmospheric layers. In order to evaluate the intrinsic reflectivity of various surface targets, satellite images should be corrected for atmospheric effects. If sensors operated in the spectral regions of UV, VIS, and NIR are considered, extinction (i.e. the sum of absorption and scattering) of aerosol particles are. important in addition to the Rayleigh scattering due to air molecules and absorption due to various molecular species such as water vapor, oxygen, ozone, carbon dioxide, etc. In this paper, we report recent results of long-term measurement using a VIS differential optical absorption (DOAS) spectrometer at CEReS. Also we describe a ground-based, wide-spectral-range sensor that derives molecular absorption signatures and aerosol scattering properties from simultaneous skylight observations in UV, VIS and NIR spectral regions. Three compact spectroradiometers operated in the wavelength range of 200-800 nm, 700- 1100 nm, and 1100- 2200 nm are employed to measure the spectral intensities under clear-sky conditions. Both HITRAN and MODTRAN database/codes are used to derive column amount of absorbing molecular species including carbon dioxide and to characterize aerosol particles.

https://opac.ll.chiba-u.jp/da/curator/104379/

https://opac.ll.chiba-u.jp/da/curator/104379/BB01446232-15-P102.pdf

Chiba University. Center for Environmental Remote Sensing

千葉大学環境リモートセンシング研究センター

Presentation

BB01446232

Proceedings of the CEReS international symposium = CEReS国際シンポジウム資料集

15

102

109

2009-12-15

eng

publisher

Proceedings of the symposium on environmental remote sensing