Emissivity and Reflection Model for Calculating Water Surface-leaving Infrared Radiance
نویسندگان
چکیده
Published emissivity models provide calculated emissivity spectra for a given set of optical constants, view angles and local wind speeds. While these models have gained widespread acceptance, discrepancies have been identified against field measurements obtained from IR Fourier transform spectrometers (FTS) at view angles ≥40°. We therefore have developed an alternative approach for calculating surface-leaving IR radiance that treats both emissivity and atmospheric reflection in a systematic manner. This work overviews the theoretical basis, development and computations of the proposed model. The model is validated using an exhaustive set of FTS field observations acquired at sea. Our analyses show the new model to have improved agreement with observation over standard models.
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