Retrieval of the Far Infrared emissivity of snow over the Greenland Plateau using the Tropospheric Airborne Fourier Transform Spectrometer (TAFTS).
Abstract
The Tropospheric Airborne Fourier Transform Spectrometer (TAFTS) measured near surface upwelling and downwelling radiances within the far infrared (FIR) over Greenland to provide in-situ estimates of FIR snow emissivity, encompassing the range 80-535 cm-1. The flight campaign and instrumental set-up is described as well as the retrieval method, including the quality controls performed on the observations. The retrieved snow emissivity lies between 0.89 and 1 over the range 360-535 cm-1 where the estimated error is the smallest. Between 80 and 360 cm-1, the increasing opacity of the atmosphere, coupled with the uncertainty in the atmospheric state, enhance the associated errors. A comparison using a recently developed model is performed with our estimates falling within the range of the theoretical values.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2017
- Bibcode:
- 2017AGUFM.C21D1143B
- Keywords:
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- 3305 Climate change and variability;
- ATMOSPHERIC PROCESSES;
- 3349 Polar meteorology;
- ATMOSPHERIC PROCESSES;
- 0738 Ice;
- CRYOSPHERE;
- 4207 Arctic and Antarctic oceanography;
- OCEANOGRAPHY: GENERAL