Publications

Yao, Q; Xu, H; Fan, C; Li, L; Wang, SH; Zheng, Y; Xu, WB; Hou, WZ; Xu, JH; Zhuang, QF; Zhou, P; Zhang, H; Chen, ZT; Li, ZQ (2024). A simplified parameterization scheme of mid- infrared radiative transfer for satellite remote sensing. JOURNAL OF INFRARED AND MILLIMETER WAVES, 43(3), 375-390.

Abstract
: As the connecting spectral band of visible -near infrared and thermal infrared , mid -infrared (MIR ) combines the reflective characteristics of short-wave radiation and the emissive characteristics of long -wave radiation , which is of great importance for application scenarios such as temperature detection and target identification. At present , the radiative transfer (RT ) calculation of the MIR spectrum still faces the problem of many input background parameters which are not easy to obtain. Based on this , a simplified parameterization scheme of MIR RT for satellite remote sensing is proposed. Using the MODTRAN model ( MM), the background surface and atmospheric parameters involved in the MIR daytime RT process were quantitatively simulated and analyzed to obtain the key parameters affecting RT , from which an MM -based parameter simplified scheme (SS ) was developed. The total radiance calculated by SS and MM is compared and validated at the center wavelength of 6 MIR channels of MODIS , and the RMSE is less than 0. 004399 with high accuracy. The SS only relies on surface temperature , surface emissivity , atmospheric profile type , water vapor and cloud optical thickness , and does not require input of aerosol , CO 2 and O 3 data. Compared with the MM , the SS reduces the input parameters from 8 categories to 5 categories , and the calculation time efficiency increases by 9. 02%. With limited computational resources , the SS proposed in this paper can provide support for the application areas such as fast processing of MIR images and remote sensing simulation of large scenes.

DOI:
10.11972/j.issn.1001-9014.2024.03.012

ISSN:
1001-9014