Short Wave Upwelling Radiative Flux (SWupRF) within Near Infrared (NIR) Wavelength Bands of O2, H2O, CO2, and CH4 by Argus 1000 Along with GENSPECT Line by Line Radiative Transfer Model

Abstract

ABSTRACTThis study develops an algorithm for short wave upwelling radiative flux (SWupRF) within near infrared wavelength band based on space orbiting Argus 1000 micro-spectrometer. Argus was hurled on aboard CanX-2 satellite on April 28, 2008 as part of a technology demonstration mission. It is operating within 900 nm to 1700 nm wavelength band with a spectral resolution of 6 nm and spatial resolution of 1.4 km. We calculate the SWupRF due to the absorption of O2, H2O, CO2, and CH4 within the selected wavelength band of each gas. A GENSPECT line by line radiative transfer model is applied to perform radiative transfer simulations to calculate the radiative flux by varying surface albedo and mixing ratios of the selected greenhouse gases. Finally, the SWupRFsyn estimated from GENSPECT was compared with SWupRFobs of Argus 1000 over a period of 4 years (2009 and 2013). The authors determined that the selected satellite data set of weeks 75 pass 43 and week 14 pass 52 showing minimum 0.850 (0.10 to 1.60) W/m2 and maximum 1.450 (0.600 to 2.30) W/m2 respectively. Further analysis will be required by applying the SWupRF model to find the radiative effects of smoky areas and clouds within the Argus wavelength range.