Abstract
Abstract : The National Institute of Meteorological Research (NIMR) has operated the FourierTransform InfraRed (FTIR) spectrometer which is the Atmospheric Emitted Radiance Interferometer(AERI) in Anmyeon island, Korea since June 2010. The ground-based AERI with similar hyper-spectralinfrared sensor to satellite could be an alternative way to validate satellite-based remote sensing. In thisregard, the NIMR has focused on the improvement of retrieval quality from the AERI, particularly cloud-data filtering method. The AERI spectrum which is measured on a typical clear day is selected referencespectrum and we used region of atmospheric window. We performed test of threshold in order to selectvalid threshold. We retrieved methane using new method which is used reference spectrum, and the othermethod which is used KLAPS cloud cover information, each retrieved methane was compared with thatof ground-based in-situ measurements. The quality of AERI methane retrievals of new method wassignificantly more improved than method of used KLAPS. In addition, the comparison of vertical totalcolumn of methane from AERI and GOSAT shows good result.Key Words : AERI, Cloud Filtering, FTIR, Infrared, Remote sensing, Satellite.요약 :
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