Comparison between ATSR-2 stereo, MOS O2-A band and ground-based cloud top heights

C. Naud; K. L. Mitchell; J. P. Muller; E. E. Clothiaux; P. Albert; R. Preusker; J. Fischer; R. J. Hogan

doi:10.1080/01431160600641806

Comparison between ATSR-2 stereo, MOS O₂-A band and ground-based cloud top heights

C. Naud, K. L. Mitchell, J. P. Muller, E. E. Clothiaux, P. Albert, R. Preusker, J. Fischer, R. J. Hogan

Meteorology and Atmospheric Science

Research output: Contribution to journal › Article › peer-review

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Abstract

A new method to retrieve cloud top heights stereoscopically using the dual-view facility of the Along Track Scanning Radiometer 2 (ATSR-2) instrument is assessed. This assessment is performed through a comparison of the cloud top heights obtained from ATSR-2 stereo and those derived from a 94-GHz radar, radiosonde profiles and independently from the Modular Optoelectronic Scanner (MOS) using the O₂-A band. The data for this study were collected over the United Kingdom from September 1998-March 1999. The results show that the accuracy of the ATSR-2 stereo heights is generally as predicted on theoretical grounds, with the errors in the 1.6μm and 0.65μm stereo heights rarely exceeding 2 km. Case study periods with disagreements between the ATSR-2 heights and the ground-based retrievals are often due to the lack of precise match-ups between the ground-based and satellite scenes, while the MOS O₂-A band is shown sometimes to miss the tops of high clouds. Evidence that the 11μm channel is more sensitive to high clouds than originally thought is given and a future application of multi-spectral stereo cloud top heights is proposed.

Original language	English (US)
Pages (from-to)	1969-1987
Number of pages	19
Journal	International Journal of Remote Sensing
Volume	28
Issue number	9
DOIs	https://doi.org/10.1080/01431160600641806
State	Published - May 2007

All Science Journal Classification (ASJC) codes

General Earth and Planetary Sciences

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10.1080/01431160600641806

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@article{e1ebae113c0048f483b29827b850ab30,

title = "Comparison between ATSR-2 stereo, MOS O2-A band and ground-based cloud top heights",

abstract = "A new method to retrieve cloud top heights stereoscopically using the dual-view facility of the Along Track Scanning Radiometer 2 (ATSR-2) instrument is assessed. This assessment is performed through a comparison of the cloud top heights obtained from ATSR-2 stereo and those derived from a 94-GHz radar, radiosonde profiles and independently from the Modular Optoelectronic Scanner (MOS) using the O2-A band. The data for this study were collected over the United Kingdom from September 1998-March 1999. The results show that the accuracy of the ATSR-2 stereo heights is generally as predicted on theoretical grounds, with the errors in the 1.6μm and 0.65μm stereo heights rarely exceeding 2 km. Case study periods with disagreements between the ATSR-2 heights and the ground-based retrievals are often due to the lack of precise match-ups between the ground-based and satellite scenes, while the MOS O2-A band is shown sometimes to miss the tops of high clouds. Evidence that the 11μm channel is more sensitive to high clouds than originally thought is given and a future application of multi-spectral stereo cloud top heights is proposed.",

author = "C. Naud and Mitchell, {K. L.} and Muller, {J. P.} and Clothiaux, {E. E.} and P. Albert and R. Preusker and J. Fischer and Hogan, {R. J.}",

note = "Funding Information: This research was supported at University College London by the European Commission under contracts ENV4-CT97-0399 (CLOUDMAP) and EVG1-CT-2000-00033 (CLOUDMAP2). We thank the Radiocommunications Research Unit at the Rutherford Appleton Laboratory for providing the 94-GHz Galileo radar data. The Galileo radar was developed for the European Space Agency by Officine Galileo, the Rutherford Appleton Laboratory and the University of Reading, under ESTEC Contract No. 10568/NL/NB. The authors would like to thank ECMWF and the UK Met. Office for providing climatological and radiosonde data, courtesy of the BADC (http://www.badc.rl.ac.uk). The authors would like to thank Oleg Alduchov, Robert Eskridge and Irina Chernykh for their help in analysing the radiosonde profiles. The 94 GHz radar data was originally supplied under data contract CRF/14/0598 and the ATSR-2 data under an ESA data grant A03-422 (CLOUDVAL).",

year = "2007",

month = may,

doi = "10.1080/01431160600641806",

language = "English (US)",

volume = "28",

pages = "1969--1987",

journal = "International Journal of Remote Sensing",

issn = "0143-1161",

publisher = "Taylor and Francis Ltd.",

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T1 - Comparison between ATSR-2 stereo, MOS O2-A band and ground-based cloud top heights

AU - Naud, C.

AU - Mitchell, K. L.

AU - Muller, J. P.

AU - Clothiaux, E. E.

AU - Albert, P.

AU - Preusker, R.

AU - Fischer, J.

AU - Hogan, R. J.

N1 - Funding Information: This research was supported at University College London by the European Commission under contracts ENV4-CT97-0399 (CLOUDMAP) and EVG1-CT-2000-00033 (CLOUDMAP2). We thank the Radiocommunications Research Unit at the Rutherford Appleton Laboratory for providing the 94-GHz Galileo radar data. The Galileo radar was developed for the European Space Agency by Officine Galileo, the Rutherford Appleton Laboratory and the University of Reading, under ESTEC Contract No. 10568/NL/NB. The authors would like to thank ECMWF and the UK Met. Office for providing climatological and radiosonde data, courtesy of the BADC (http://www.badc.rl.ac.uk). The authors would like to thank Oleg Alduchov, Robert Eskridge and Irina Chernykh for their help in analysing the radiosonde profiles. The 94 GHz radar data was originally supplied under data contract CRF/14/0598 and the ATSR-2 data under an ESA data grant A03-422 (CLOUDVAL).

PY - 2007/5

Y1 - 2007/5

N2 - A new method to retrieve cloud top heights stereoscopically using the dual-view facility of the Along Track Scanning Radiometer 2 (ATSR-2) instrument is assessed. This assessment is performed through a comparison of the cloud top heights obtained from ATSR-2 stereo and those derived from a 94-GHz radar, radiosonde profiles and independently from the Modular Optoelectronic Scanner (MOS) using the O2-A band. The data for this study were collected over the United Kingdom from September 1998-March 1999. The results show that the accuracy of the ATSR-2 stereo heights is generally as predicted on theoretical grounds, with the errors in the 1.6μm and 0.65μm stereo heights rarely exceeding 2 km. Case study periods with disagreements between the ATSR-2 heights and the ground-based retrievals are often due to the lack of precise match-ups between the ground-based and satellite scenes, while the MOS O2-A band is shown sometimes to miss the tops of high clouds. Evidence that the 11μm channel is more sensitive to high clouds than originally thought is given and a future application of multi-spectral stereo cloud top heights is proposed.

AB - A new method to retrieve cloud top heights stereoscopically using the dual-view facility of the Along Track Scanning Radiometer 2 (ATSR-2) instrument is assessed. This assessment is performed through a comparison of the cloud top heights obtained from ATSR-2 stereo and those derived from a 94-GHz radar, radiosonde profiles and independently from the Modular Optoelectronic Scanner (MOS) using the O2-A band. The data for this study were collected over the United Kingdom from September 1998-March 1999. The results show that the accuracy of the ATSR-2 stereo heights is generally as predicted on theoretical grounds, with the errors in the 1.6μm and 0.65μm stereo heights rarely exceeding 2 km. Case study periods with disagreements between the ATSR-2 heights and the ground-based retrievals are often due to the lack of precise match-ups between the ground-based and satellite scenes, while the MOS O2-A band is shown sometimes to miss the tops of high clouds. Evidence that the 11μm channel is more sensitive to high clouds than originally thought is given and a future application of multi-spectral stereo cloud top heights is proposed.

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U2 - 10.1080/01431160600641806

DO - 10.1080/01431160600641806

M3 - Article

AN - SCOPUS:34249334606

SN - 0143-1161

VL - 28

SP - 1969

EP - 1987

JO - International Journal of Remote Sensing

JF - International Journal of Remote Sensing

IS - 9

ER -

Comparison between ATSR-2 stereo, MOS O₂-A band and ground-based cloud top heights

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