DocumentCode :
1785041
Title :
ISMAR: A new Submillimeter Airborne Radiometer
Author :
Fox, S. ; Lee, Chi-Kwan ; Rule, Ian ; King, R. ; Rogers, Stuart ; Harlow, Chawn ; Baran, Anastasia
Author_Institution :
Met Office, Exeter, UK
fYear :
2014
fDate :
24-27 March 2014
Firstpage :
128
Lastpage :
132
Abstract :
ISMAR (International SubMillimeter Airborne Radiometer) is a new passive remote-sensing radiometer which has been jointly funded by the UK Met Office and the European Space Agency (ESA). It contains a number of heterodyne receivers operating at frequencies between 118 and 664 GHz, some with dual polarisation. The design is modular and will allow further channels to be added in future, including 874 GHz. Submillimeter waves are very sensitive to scattering by ice particles, and the channels have been selected to allow the direct retrieval of various ice-cloud properties, including Ice Water Path (IWP) which is an important parameter in General Circulation Models (GCMs). ISMAR can also be used for surface emissivity and radiative transfer studies as it can view in multiple nadir and zenith directions. ISMAR has been developed as a satellite demonstrator for ICI (Ice Cloud Imager) due for launch in 2022 on the EUMETSAT Polar System - Second Generation satellites (EPS-SG). It can be used for testing and developing retrieval algorithms prior to launch, as well as for calibration/validation post-launch and specific scientific case studies. It is designed to operate on board the FAAM BAe-146 atmospheric research aircraft, which also carries a wide range of complementary remote-sensing and in-situ instrumentation including microwave radiometers, infra-red and visible spectrometers and cloud physics probes. The instrument is self-contained, allowing simple ground-based operation as well as the potential for installation on other aircraft. ISMAR is currently undergoing integration testing, and flight testing will take place from April 2014. An ISMAR science campaign is currently planned to take place in Goose Bay, Canada in 2015 to study the submillimeter signature of cirrus cloud.
Keywords :
atmospheric measuring apparatus; atmospheric techniques; clouds; radiative transfer; remote sensing; Canada; EPS-SG satellites; EUMETSAT Polar System; European Space Agency; FAAM BAe-146 atmospheric research aircraft; General Circulation Models; Goose Bay; ISMAR; Ice Cloud Imager; Ice Water Path; International SubMillimeter Airborne Radiometer; UK Met Office; cirrus cloud submillimeter signature; cloud physics probes; dual polarisation; frequency 118 GHz to 664 GHz; heterodyne receivers; ice particles; infra-red spectrometer; microwave radiometers; nadir direction; passive remote-sensing radiometer; radiative transfer; retrieval algorithms; submillimeter waves; surface emissivity; visible spectrometer; zenith direction; Atmospheric measurements; Clouds; Ice; Instruments; Microwave FET integrated circuits; Microwave integrated circuits; Microwave radiometry; airborne; cirrus; clouds; precipitation; submillimeter radiometer;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Radiometry and Remote Sensing of the Environment (MicroRad), 2014 13th Specialist Meeting on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4799-4645-7
Type :
conf
DOI :
10.1109/MicroRad.2014.6878923
Filename :
6878923
Link To Document :
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