Comparison of columnar water vapor over northern China derived from ground-based measurements and MODIS

Chaoshun Liu; Runhe Shi; Wei Gao; Kaixu Bai

doi:10.1117/12.890299

15 September 2011 Comparison of columnar water vapor over northern China derived from ground-based measurements and MODIS

Chaoshun Liu, Runhe Shi, Wei Gao, Kaixu Bai

Author Affiliations +

Proceedings Volume 8156, Remote Sensing and Modeling of Ecosystems for Sustainability VIII; 81560G (2011) https://doi.org/10.1117/12.890299
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

Abstract

Water vapor represents a small but environmentally significant constituent of the atmosphere. This study retrieved columnar water vapor (CWV) with the 939.3 nm band of a Multi-filter Rotating Shadowband Radiometer (MFRSR) using the modified Langley technique from September 23, 2004 to June 20, 2005 at the XiangHe site.To improve the credibility, the MFRSR results were compared with those obtained from the AERONET (AErosol RObotic NETwork) CIMEL sun-photometer measurements, co-located at the XiangHe site, and the Moderate Resolution Imaging Spectroradiometer (MODIS) Near-Infrared Total Precipitable Water Product (MOD05), respectively. These comparisons show a good agreement in terms of correlation coefficients, slopes, and offsets, revealing that the accuracy of CWV estimation using the MFRSR instrument is reliable and suitable for extended studies in northern China.

Citation Download Citation

Chaoshun Liu, Runhe Shi, Wei Gao, and Kaixu Bai "Comparison of columnar water vapor over northern China derived from ground-based measurements and MODIS", Proc. SPIE 8156, Remote Sensing and Modeling of Ecosystems for Sustainability VIII, 81560G (15 September 2011); https://doi.org/10.1117/12.890299

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