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Can turbulence within the field of view cause significant biases in radiative transfer modeling at the 183 GHz band?
Título : Can turbulence within the field of view cause significant biases in radiative transfer modeling at the 183 GHz band?
Autor : Calbet, Xavier ORCID RESEARCHERID SCOPUSID Autor AEMETPeinado Galan, NiobeAutor AEMETDeSouza-Machado, SergioKursinski, Emil RobertOria Iriarte, Peio RESEARCHERID Autor AEMETWardle, DaleOtarola, ÁngelRípodas Agudo, Pilar ORCID Autor AEMETKivi, Rigel
Palabras clave : Turbulence; Microwave sounders field; Water vapor; Radiosondes
Fecha de publicación : 2018
Editor: European Geosciences Union
Citación : Atmospheric Measurement Techniques. 2018, 11(12), p. 6409–6417
Versión del editor: https://dx.doi.org/10.5194/amt-11-6409-2018
Resumen : The hypothesis whether turbulence within the passive microwave sounders field of view can cause significant biases in radiative transfer modeling at the 183 GHz water vapor absorption band is tested. A novel method to calculate the effects of turbulence in radiative transfer modeling is presented. It is shown that the turbulent nature of water vapor in the atmosphere can be a critical component of radiative transfer modeling in this band. Radiative transfer simulations are performed comparing a uniform field with a turbulent one. These comparisons show frequency dependent biases which can be up to several kelvin in brightness temperature. These biases can match experimentally observed biases, such as the ones reported in Brogniez et al. (2016). Our simulations show that those biases could be explained as an effect of high-intensity turbulence in the upper troposphere. These high turbulence phenomena are common in clear air turbulence, storm or cumulus cloud situations.
URI : http://hdl.handle.net/20.500.11765/11674
ISSN : 1867-1381
1867-8548
Colecciones: Artículos científicos 2015-2018


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