A Comparison of VHF Wind Profiler Observations and the NCEP–NCAR Reanalysis over the Tropical Pacific
A Comparison of VHF Wind Profiler Observations and the NCEP–NCAR Reanalysis over the Tropical Pacific
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热带太平洋 VHF 风廓线仪观测与 NCEP-NCAR 再分析的比较
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
K. Gage
中科院分区：
文献类型：
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作者：
R. Schafer;S. Avery;K. Gage
摘要将VHF风廓线仪测量的纬向风和纬向风与NCEP-NCAR再分析在热带太平洋进行了比较。到1999年12月，在西太平洋的澳大利亚达尔文和印度尼西亚比亚克、中太平洋的基里巴斯圣诞岛和东太平洋的皮乌拉秘鲁的剖面仪收集了8至13年的几乎连续的数据。虽然这些廓线仪通常观测高达约20公里的风，但只有圣诞岛的风被同化到再分析中。长时间的剖面仪操作提供了一个机会，研究在赤道太平洋，一个地区与地理稀疏的观测剖面仪和再分析风之间的差异。平均和季节平均纬向和经向风用于确定廓线仪和再分析风的差异。两个潜在的原因之间的差异廓线和再分析风确定。其中第一个是与不同的空间和时间特征。
Abstract VHF wind profiler measurements of zonal and meridional winds are compared with the NCEP–NCAR reanalysis at sites in the tropical Pacific. By December 1999 the profilers at Darwin, Australia, and Biak, Indonesia, in the western Pacific; Christmas Island, Kiribati, in the central Pacific; and Piura Peru, in the eastern Pacific had collected between 8 and 13 yr of nearly continuous data. While these profilers routinely observe winds up to about 20 km, only winds at Christmas Island are assimilated into the reanalysis. The long period of profiler operation provides an opportunity to study differences between the profiler and reanalysis winds in the equatorial Pacific, a region with geographically sparse observations. Mean and seasonal mean zonal and meridional winds are used to identify differences in the profiler and reanalysis winds. Two potential causes for the discrepancy between profiler and reanalysis winds are identified. The first of these is related to different spatial and temporal characte...