Articles | Volume 19, issue 14
Atmos. Chem. Phys., 19, 9453–9468, 2019
https://doi.org/10.5194/acp-19-9453-2019

Special issue: Advanced Global Navigation Satellite Systems tropospheric...

Atmos. Chem. Phys., 19, 9453–9468, 2019
https://doi.org/10.5194/acp-19-9453-2019

Research article 24 Jul 2019

Research article | 24 Jul 2019

Consistency and representativeness of integrated water vapour from ground-based GPS observations and ERA-Interim reanalysis

Olivier Bock and Ana C. Parracho

Data sets

GPS IWV data have the following DOI: global GPS IWV data at 120 stations of IGS permanent network Olivier Bock https://doi.org/10.14768/06337394-73a9-407c-9997-0e380dac5591

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Short summary
We examine the consistency of global IWV data from ERA-Interim reanalysis and 16 years of GPS observations. Representativeness differences are found to be a dominant error source, with a strong dependence on geographic, topographic, and climatic features, which explain both average and extreme differences. A methodology for reducing the representativeness errors and detecting the extreme, outlying, cases is discussed.
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