从240至590厘米⁻¹的H₂O转动带发射光谱辐射中检索外扩水汽连续系数。

Retrieval of foreign-broadened water vapor continuum coefficients from emitted spectral radiance in the H2O rotational band from 240 to 590 cm(-1).

作者信息

Serio Carmine, Masiello Guido, Esposito Francesco, Di Girolamo Paolo, Di Iorio Tatiana, Palchetti Luca, Bianchini Giovanni, Muscari Giovanni, Pavese Giulia, Rizzi Rolando, Carli Bruno, Cuomo Vincenzo

机构信息

Dip. Ingegeneria e Fisica dell'Ambiente, Universitá della Basilicata, Potenza, Italy.

出版信息

Opt Express. 2008 Sep 29;16(20):15816-33. doi: 10.1364/oe.16.015816.

DOI:10.1364/oe.16.015816

PMID:18825219

Abstract

The paper presents a novel methodology to retrieve the foreign-broadened water vapor continuum absorption coefficients in the spectral range 240 to 590 cm(-1) and is the first estimation of the continuum coefficient at wave numbers smaller than 400 cm(-1) under atmospheric conditions. The derivation has been accomplished by processing a suitable set of atmospheric emitted spectral radiance observations obtained during the March 2007 Alps campaign of the ECOWAR project (Earth Cooling by WAter vapor Radiation). It is shown that, in the range 450 to 600 cm(-1), our findings are in good agreement with the widely used Mlawer, Tobin-Clough, Kneizys-Davies (MT CKD) continuum. Below 450 cm(-1) however the MT CKD model overestimates the magnitude of the continuum coefficient.

摘要

本文提出了一种新颖的方法来获取240至590厘米⁻¹光谱范围内的外加宽水汽连续吸收系数，这是在大气条件下首次对波数小于400厘米⁻¹时的连续系数进行估计。该推导是通过处理2007年3月ECOWAR项目（水汽辐射致地球降温）阿尔卑斯山观测活动期间获得的一组合适的大气发射光谱辐射观测数据来完成的。结果表明，在450至600厘米⁻¹范围内，我们的研究结果与广泛使用的Mlawer、Tobin-Clough、Kneizys-Davies（MT CKD）连续谱吻合良好。然而，在450厘米⁻¹以下，MT CKD模型高估了连续系数的大小。