气候变化领域集成服务门户(CCPortal): Performance of Radiative Transfer Models in the Microwave Region

CCPortal

DOI	10.1029/2019JD031831
	Performance of Radiative Transfer Models in the Microwave Region
	Moradi I.; Goldberg M.; Brath M.; Ferraro R.; Buehler S.A.; Saunders R.; Sun N.
发表日期	2020
ISSN	2169897X
卷号	125 期号:6
英文摘要	We compared two fast radiative transfer models, Community Radiative Transfer Model (CRTM) and Radiative Transfer for TIROS Operational Vertical Sounder (RTTOV), with the LBL model Atmospheric Radiative Transfer Simulator (ARTS). We used the measurements from Advanced Technology Microwave Sounder (ATMS) and the Global Precipitation Measurement Microwave Imager (GMI) for evaluation of the radiative transfer models. The models in comparison with the observations and each other performed very well with a mean difference less than 0.5 K for the temperature sounding channels operating near the oxygen absorption band at 60 GHz. There was a difference of up to 1 K among the models as well as compared with the observations for humidity sounding channels operating around water vapor absorption line at 183 GHz. The mean difference between the simulations and observations was up to 6 K for surface sensitive channels. Water vapor and surface sensitive channels also showed to be more sensitive than the temperature sounding channels to the spectroscopy models used to calculate the absorption coefficients. There was a small difference, less than 0.1 K, between brightness temperatures calculated using traditional boxcar and actual Sensor or Spectral Response Functions, except for a difference of 0.25 K for ATMS Channel 6. Double difference technique showed about 1 K difference between water vapor channels from ATMS instruments onboard N20 and National Polar-orbiting Partnership (NPP). However, comparison of a new version of ATMS/NPP observations recently generated using an enhanced calibration algorithm with ATMS/N20 observations showed that the differences between the two instruments are less than 0.5 K after improving the ATMS/NPP calibration. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	absorption; microwave instruments; radiative transfer; satellite observations; spectroscopy; surface emissivity
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186104
作者单位	NOAA Center for Satellite Applications and Research, College Park, MD, United States; Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; NOAA Center for Earth System Sciences and Remote Sensing Technologies, New York, NY, United States; NOAA JPSS Program Science Office, Lanham, MD, United States; Meteorologisches Institut, Centrum für Erdsystem- und Nachhaltigkeitsforschung (CEN), Fachbereich Geowissenschaften, Universität Hamburg, Hamburg, Germany; Met Office, Exeter, United Kingdom
推荐引用方式 GB/T 7714	Moradi I.,Goldberg M.,Brath M.,et al. Performance of Radiative Transfer Models in the Microwave Region[J],2020,125(6).
APA	Moradi I..,Goldberg M..,Brath M..,Ferraro R..,Buehler S.A..,...&Sun N..(2020).Performance of Radiative Transfer Models in the Microwave Region.Journal of Geophysical Research: Atmospheres,125(6).
MLA	Moradi I.,et al."Performance of Radiative Transfer Models in the Microwave Region".Journal of Geophysical Research: Atmospheres 125.6(2020).