GPCP Version 2.2 Combined Precipitation Data Set
GPCP Version 2.2 Combined Precipitation Data Set
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DOI：
10.5065/d6r78c9s
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发表时间：
2015-12
期刊：
影响因子：
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通讯作者：
G. Huffman;D. Bolvin;E. Nelkin;R. Adler
中科院分区：
文献类型：
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作者：
G. Huffman;D. Bolvin;E. Nelkin;R. Adler
注：此数据集已被GPCP版本2.3取代，该版本可在RDA数据集ds728.4 [https：//rda.ucar.edu/softets/ds728.4/]中获得。建议用户转换到此更新的数据集。\ n\n此数据集包含全球降水气候学项目（GPCP）2.2版的卫星测量降水估计和卫星测量误差估计。这些数据是在全球2.5度× 2.5度经度/纬度网格上定义的月度分析，涵盖1979年1月至今（延迟）。每月气候图（1979-2011）也可提供。n\n请注意，原始二进制数据是使用未格式化二进制字的大端表示法写入的。因此，在little endian平台上阅读这些数据的用户需要对数据进行字节交换。\ n\n GPCP由世界气候研究计划（WCRP）建立，随后附属于全球能源和水交换计划（GEWEX），以解决量化地球仪多年来降水分布的问题。一般的方法是利用每种数据类型的优势，将从几个来源中的每一个来源获得的降水信息联合收割机合并成一个最终的合并产品。被动微波估计是基于特殊传感器微波成像仪（SSM/I）和特殊传感器微波成像仪/探测器（SSMIS）的数据，这些数据来自于美国国防气象卫星计划（DMSP）的一系列卫星，这些卫星于上午6点/下午6点在太阳同步低地球轨道上飞行。红外线降水量估计主要由地球静止卫星（美国、欧洲、日本）计算，其次由NOAA系列极地轨道卫星（美国）计算。其他低地球轨道估计数包括来自美国航天局Aqua的大气红外探测器（AIRS）数据，以及来自NOAA系列卫星的电视红外观测卫星方案（TIROS）业务垂直探测器（TOVS）和传出长波辐射降水指数（OPI）数据。降水量计数据由德国气象局全球降水气候学中心（GPCC）收集和分析。n\n 2.2版数据集包含来自以下贡献中心的数据：\n * GPCP极地卫星降水数据中心-排放（SSM/I及SSMIS排放估计）\n * GPCP极地卫星降水数据中心-散射（SSM/I及SSMIS散射估计）\n * GPCP地球同步卫星降水数据中心（全球定位指数和OPI估计）\n * NASA/GSFC探测器研究小组（TOVS及AIRS估计）\n * GPCP全球降水气候学中心（降水量计分析）\n\n数据作者对用户的要求：GPCP数据集是在国际合作下开发和维护的，并为世界各地的科学界所使用。为了更好地了解GPCP用户社区不断变化的需求，并提高GPCP产品套件的实用性，数据集作者要求为使用GPCP产品的每个出版物提供引用。请将引文通过电子邮件发送到乔治.j.霍夫曼或大卫.t.bolvin@nasa. gov。您的帮助和合作将为GPCP产品套件的未来增强提供有价值的信息。nasa.gov
NOTE: This dataset has been superseded by GPCP Version 2.3, which is available in RDA dataset ds728.4 [https://rda.ucar.edu/datasets/ds728.4/]. Users are advised to transition to this updated dataset.\n\n This dataset contains Version 2.2 of the Global Precipitation Climatology Project (GPCP) combined satellite-gauge precipitation estimate and combined satellite-gauge error estimate. The data are monthly analyses defined on a global 2.5 degree by 2.5 degree longitude/latitude grid and cover the period January 1979 to (delayed) present. A monthly climatology (1979-2011) is also available.\n\n Please note that the original binary data were written using the big endian representation of unformatted binary words. Users reading this data on little endian platforms, therefore, will need to byte swap the data.\n\n The GPCP was established by the World Climate Research Program (WCRP) and subsequently attached to the Global Energy and Water Exchange program (GEWEX) to address the problem of quantifying the distribution of precipitation around the globe over many years. The general approach is to combine the precipitation information available from each of several sources into a final merged product, taking advantage of the strengths of each data type. The passive microwave estimates are based on Special Sensor Microwave/Imager (SSM/I) and Special Sensor Microwave Imager/Sounder (SSMIS) data from the series of Defense Meteorological Satellite Program (DMSP, United States) satellites that fly in sun-synchronous low-earth orbits at 6am / 6pm. The infrared precipitation estimates are computed primarily from geostationary satellites (United States, Europe, Japan), and secondarily from NOAA series polar-orbiting satellites (United States). Additional low-Earth orbit estimates include Atmospheric Infrared Sounder (AIRS) data from the NASA Aqua, and Television Infrared Observation Satellite Program (TIROS) Operational Vertical Sounder (TOVS) and Outgoing Longwave Radiation Precipitation Index (OPI) data from the NOAA series satellites. The precipitation gauge data are assembled and analyzed by the Global Precipitation Climatology Centre (GPCC) of the Deutscher Wetterdienst.\n\n The Version 2.2 Data Set contains data from the following contributing centers: \n * GPCP Polar Satellite Precipitation Data Centre - Emission (SSM/I and SSMIS emission estimates)\n * GPCP Polar Satellite Precipitation Data Centre - Scattering (SSM/I and SSMIS scattering estimates)\n * GPCP Geostationary Satellite Precipitation Data Centre (GPI and OPI estimates)\n * NASA/GSFC Sounder Research Team (TOVS and AIRS estimates)\n * GPCP Global Precipitation Climatology Centre (precipitation gauge analyses)\n\nRequest to users from the data authors: The GPCP datasets are developed and maintained with international cooperation and are used by the worldwide scientific community. To better understand the evolving requirements across the GPCP user community and to increase the utility of the GPCP product suite, the dataset authors request that a citation be provided for each publication that uses the GPCP products. Please email the citation to george.j.huffman@nasa.gov or david.t.bolvin@nasa.gov. Your help and cooperation will provide valuable information for making future enhancements to the GPCP product suite.