Assessment of the potential of MERIS near-infrared water vapour products to correct ASAR interferometric measurements

Li, Z., Muller, J.P., Cross, P., Albert, P., Fischer, J. and Bennartz, R. (2006) Assessment of the potential of MERIS near-infrared water vapour products to correct ASAR interferometric measurements. International Journal of Remote Sensing, 27(2), pp. 349-365. (doi: 10.1080/01431160500307342)

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Publisher's URL: http://dx.doi.org/10.1080/01431160500307342

Abstract

Atmospheric water vapour is a major limitation for high precision Interferometric Synthetic Aperture Radar (InSAR) applications due to its significant impact on microwave signals. We propose a statistical criterion to test whether an independent water vapour product can reduce water vapour effects on InSAR interferograms, and assess the potential of the Medium Resolution Imaging Spectrometer (MERIS) near-infrared water vapour products for correcting Advanced SAR (ASAR) data. Spatio-temporal comparisons show c. 1.1mm agreement between MERIS and GPS/radiosonde water vapour products in terms of standard deviations. One major limitation with the use of MERIS water vapour products is the frequency of cloud free conditions. Our analysis indicates that in spite of the low global cloud free conditions (~25%), the frequency can be much higher for certain areas such as Eastern Tibet (~38%) and Southern California (~48%). This suggests that MERIS water vapour products show potential for correcting ASAR interferometric measurements in certain regions.

Item Type:Articles
Keywords:InSAR, MERIS, correction, atmospheric effects, water vapour
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Li, Dr Zhenhong
Authors: Li, Z., Muller, J.P., Cross, P., Albert, P., Fischer, J., and Bennartz, R.
Subjects:G Geography. Anthropology. Recreation > GE Environmental Sciences
G Geography. Anthropology. Recreation > GB Physical geography
T Technology > TA Engineering (General). Civil engineering (General)
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
Journal Name:International Journal of Remote Sensing
Publisher:Taylor & Francis
ISSN:0143-1161
ISSN (Online):1366-5901
Copyright Holders:Copyright © 2006 Taylor & Francis
First Published:First published in International Journal of Remote Sensing 27(2):349-365
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher.

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