期刊
JOURNAL OF THE ATMOSPHERIC SCIENCES
卷 68, 期 8, 页码 1703-1713出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/2011JAS3612.1
关键词
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资金
- National Science Foundation (NSF) [ATM-0301213/CSA, ATM-0410018, AGS-0918398/CSA AGS-0939962]
- National Science Council in Taiwan
- National Space Organization in Taiwan
- National Science Council in the United States
- National Space Organization in the United States
- National Aeronautics and Space Administration
- NOAA
- Air Force Office of Scientific Research and Space
- Office of Naval Research
- Div Atmospheric & Geospace Sciences
- Directorate For Geosciences [0939962] Funding Source: National Science Foundation
This study presents an algorithm for estimating atmospheric boundary layer (ABL) depth from Global Positioning System (GPS) radio occultation (RO) data. The algorithm is applied to the Constellation Observing System for Meteorology, Ionosphere, and Climate (COSMIC) RO data and validated using high-resolution radiosonde data from the island of St. Helena (16.0 degrees S, 5.7 degrees W), tropical (30 degrees S-30 degrees N) radiosondes collocated with RO, and European Centre for Medium-Range Weather Forecasts (ECMWF) high-resolution global analyses. Spatial and temporal variations of the ABL depth obtained from COSMIC RO data for a 1-yr period over tropical and subtropical oceans are analyzed. The results demonstrate the capability of RO data to resolve geographical and seasonal variations of ABL height. The spatial patterns of the variations are consistent with those derived from ECMWF global analysis. However, the ABL heights derived from ECMWF global analysis, on average, are negatively biased against those estimated from COSMIC GPS RO data. These results indicate that GPS RO data can provide useful information on ABL height, which is an important parameter for weather and climate studies.
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