This title appears in the Scientific Report :
2020
Please use the identifier:
http://hdl.handle.net/2128/25689 in citations.
Please use the identifier: http://dx.doi.org/10.5194/amt-2020-256 in citations.
Cirrus cloud shape detection by tomographic extinction retrievals from infrared limb emission sounder measurements
Cirrus cloud shape detection by tomographic extinction retrievals from infrared limb emission sounder measurements
Abstract. An improved cloud index-based method for the detection of clouds in limb sounder data is presented that exploits the spatial overlap of measurements to more precisely detect the location of (optically thin) clouds. A second method based on a tomographic extinction retrieval is also present...
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Personal Name(s): | Ungermann, Jörn (Corresponding author) |
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Bartolome, Irene / Grießbach, Sabine / Spang, Reinhold / Rolf, Christian / Krämer, Martina / Höpfner, Michael / Riese, Martin | |
Contributing Institute: |
Stratosphäre; IEK-7 Jülich Supercomputing Center; JSC |
Published in: | Atmospheric measurement techniques discussions (2020) S. 2020-256 |
Imprint: |
Katlenburg-Lindau
Copernicus
2020
|
DOI: |
10.5194/amt-2020-256 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods Composition and dynamics of the upper troposphere and middle atmosphere |
Link: |
OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.5194/amt-2020-256 in citations.
Abstract. An improved cloud index-based method for the detection of clouds in limb sounder data is presented that exploits the spatial overlap of measurements to more precisely detect the location of (optically thin) clouds. A second method based on a tomographic extinction retrieval is also presented. Using CALIPSO data and a generic advanced infrared limb imaging instrument as example for a synthetic study, the new cloud index method is better in detecting the horizontal cloud extent in comparison to the traditional cloud index and has a reduction of false positive cloud detection events by about 30 %. The results for the extinction retrieval show even an improvement of 60 %. In a second step, the extinction retrieval is applied to real 3-D measurements of the air-borne limb sounder GLORIA taken during the Wave-driven ISentropic Exchange (WISE) campaign to retrieve small-scale cirrus clouds with high spatial accuracy. |