Radiance-based retrieval bias mitigation for the MOPITT instrument: the version 8 product

被引：65

作者：

Deeter, Merritt N. ^{[1
]}

Edwards, David P. ^{[1
]}

Francis, Gene L. ^{[1
]}

Gille, John C. ^{[1
]}

Mao, Debbie ^{[1
]}

Martinez-Alonso, Sara ^{[1
]}

Worden, Helen M. ^{[1
]}

Ziskin, Dan ^{[1
]}

Andreae, Meinrat O. ^{[2
,3
]}

机构：

[1] Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, POB 3000, Boulder, CO 80307 USA

[2] Max Planck Inst Chem, POB 3060, D-55020 Mainz, Germany

[3] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA

来源：

ATMOSPHERIC MEASUREMENT TECHNIQUES | 2019年 / 12卷 / 08期

关键词：

TROPOSPHERIC CARBON-MONOXIDE; CO; RECORD; OZONE; MODEL; VALIDATION; ALGORITHM; CH4;

D O I：

10.5194/amt-12-4561-2019

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

The MOPITT (Measurements of Pollution in the Troposphere) satellite instrument has been making nearly continuous observations of atmospheric carbon monoxide (CO) since 2000. Satellite observations of CO are routinely used to analyze emissions from fossil fuels and biomass burning, as well as the atmospheric transport of those emissions. Recent enhancements to the MOPITT retrieval algorithm have resulted in the release of the version 8 (V8) product. V8 products benefit from updated spectroscopic data for water vapor and nitrogen used to develop the operational radiative transfer model and exploit a new method for minimizing retrieval biases through parameterized radiance bias correction. In situ datasets used for algorithm development and validation include the NOAA (National Oceanic and Atmospheric Administration) and HIPPO (HIAPER Pole-to-Pole Observations) datasets used for earlier MOPITT validation work in addition to measurements from the ACRIDICON-CHUVA (Aerosol, Cloud, Precipitation, and Radiation Interactions and Dynamics of Convective Cloud Systems - Cloud processes of the main precipitation systems in Brazil: A contribution to cloud resolving modeling and to the GPM (Global Precipitation Measurement)), KORUS-AQ (The Korea-United States Air Quality Study), and ATom (The Atmospheric Tomography Mission) programs. Validation results illustrate clear improvements with respect to long-term bias drift and geographically variable retrieval bias. For example, whereas bias drift for the V7 thermal-infrared (TIR)-only product exceeded 0.5 % yr(-1) for levels in the upper troposphere (e.g., at 300 hPa), bias drift for the V8 TIR-only product is found to be less than 0.1 % yr(-1) at all levels. Also, whereas upper-tropospheric (300 hPa) retrieval bias in the V7 TIR-only product exceeded 10 % in the tropics, corresponding V8 biases are less than 5 % (in terms of absolute value) at all latitudes and do not exhibit a clear latitudinal dependence.

引用

页码：4561 / 4580

页数：20

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