Global Simplified Atmospheric Radiative Transfer Model at L-Band

Author

Jinzheng Peng ; Kim, E. ; Piepmeier, J.

Author_Institution

Morgan State Univ., Baltimore, MD, USA

Volume

10

Issue

3

fYear

2013

fDate

May-13

Firstpage

437

Lastpage

440

Abstract

A simplified atmospheric radiative transfer model at L-band has been developed for the Soil Moisture Active/Passive (SMAP) forward brightness temperature (level 1) simulator. The upwelling and downwelling brightness temperatures and the total loss factor of the atmosphere are modeled as polynomial functions of pressure, temperature, and water vapor density near the Earth´s surface, as well as incidence angle. The model has been developed and verified by using global radiosonde data, and the model error is within the 0.1 K error budget (atmosphere portion) of the SMAP brightness temperature (Level 1B) product.

Keywords

atmospheric humidity; atmospheric pressure; atmospheric temperature; radiative transfer; Earth surface; SMAP forward brightness temperature simulator; Soil Moisture Active Passive simulator; atmospheric pressure; atmospheric temperature; atmospheric water vapor density; downwelling brightness temperature; global simplified atmospheric radiative transfer model; incidence angle; polynomial function; total loss factor; upwelling brightness temperature; Atmospheric measurements; Atmospheric modeling; Brightness temperature; L-band; Microwave radiometry; Temperature measurement; Terrestrial atmosphere; Electromagnetic propagation; microwave radiometry; radiative transfer model (RTM);

fLanguage

English

Journal_Title

Geoscience and Remote Sensing Letters, IEEE

Publisher

ieee

ISSN

1545-598X

Type

jour

DOI

10.1109/LGRS.2012.2208213

Filename

6276237