A robust method to determine global distribution of atmospheric boundary layer top from COSMIC GPS RO measurements
✍ Scribed by M. V. Ratnam; S. G. Basha
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 537 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1530-261X
- DOI
- 10.1002/asl.277
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✦ Synopsis
Abstract
In this study, we introduce a robust method for precise determination of atmospheric boundary layer (ABL) top from COSMIC global positioning system radio occultation measurements. We apply a wavelet covariance transform to compute the convolution of COSMIC‐observed bending angle/refractivity profile with a Haar function and use the maximum covariance to identify the ABL top, making detection of even small transitions possible. Results obtained were compared with radiosonde N profiles for verification of the ABL top. This procedure developed was used to study the global distribution of ABL top with special reference to the inter‐tropical convergence zone. Copyright © 2010 Royal Meteorological Society