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NOAA Climate Data Record (CDR) of CPC Morphing Technique (CMORPH) High Resolution Global Precipitation Estimates, Version 1

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DataCite Commons2025-02-20 更新2025-04-16 收录
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https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncdc:C00948
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This data set is for the bias-corrected, reprocessed CPC Morphing technique (CMORPH) high-resolution global satellite precipitation estimates. The CMORPH satellite precipitation estimates are created in two steps. First, the purely satellite-based global fields of precipitation are constructed through integrating Level 2 retrievals of instantaneous precipitation rates from all available passive microwave (PMW_ measurements aboard low earth orbiting platforms. Bias in these integrated satellite precipitation estimates is then removed through comparison against CPC daily gauge analysis over land and adjustment against the Global Precipitation Climatology Project (GPCP) merged analysis of pentad precipitation over ocean. The bias corrected CMORPH satellite precipitation estimates are created on an 8kmx8km grid over the global domain from 60deg S to 60deg N and in a 30-minute interval from January 1, 1998. Due to the delay of some input data sets, this formal version (Version 1) bias corrected CMORPH is produced manually once a month at a latency of 3-4 months. For the CDR production, the bias corrected CMORPH generated at its native resolution of 8kmx8km / 30-minute is upscaled to form THREE sets of data files of different time/space resolution for improved user experience: a) the full-resolution CMORPH data Output variable: precipitation rate in mm/hour spatial resolution: 8kmx8km (at equator) spatial coverage: global (60S-60N) temporal resolution: 30min data period: January 1, 1998 to the present b) Hourly CMORPH Output variable: precipitation rate in mm/hour spatial resolution: 0.25deg lat/lon spatial coverage: global (60S-60N) temporal resolution: hourly data period: January 1, 1998 to the present c) Daily CMORPH Output variable: daily precipitation in mm/day Printed 2015-06-08 - Verify Document Currency Before Use 1 spatial resolution: 0.25deg lat/lon spatial coverage: global (60S-60N) temporal resolution: hourly data period: January 1, 1998 to the present (b) and (c) are derived from and quantitatively consistent with the CMORPH at its original resolution (a).

本数据集为经偏差校正、后处理的CPC变形技术(CMORPH, CPC Morphing technique)高分辨率全球卫星降水估计产品。CMORPH卫星降水估计产品的生成分为两个步骤:首先,通过整合所有低地球轨道平台搭载的被动微波(PMW, Passive Microwave)传感器获取的瞬时降水率二级反演产品,构建纯卫星基全球降水场;随后通过与陆地区域的CPC每日地面雨量计分析数据集比对、与海洋区域的全球降水气候学计划(GPCP, Global Precipitation Climatology Project)的候降水量融合分析数据调整,消除上述整合卫星降水估计产品中的系统偏差。经偏差校正后的CMORPH卫星降水估计产品以8km×8km的网格分辨率生成,覆盖南北纬60°的全球范围,时间分辨率为30分钟,数据时段始于1998年1月1日。由于部分输入数据集存在交付延迟,本正式版本(版本1)的偏差校正CMORPH产品采用人工月度制作模式,发布延迟为3至4个月。 为满足气候数据记录(CDR, Climate Data Record)的生产需求,我们将原生分辨率为8km×8km、时间分辨率为30分钟的偏差校正CMORPH产品重采样为三类不同时空分辨率的数据文件,以优化用户使用体验: a) 全分辨率CMORPH数据 输出变量:降水率,单位为毫米每小时(mm/h) 空间分辨率:赤道处为8km×8km 空间覆盖范围:全球(南北纬60°) 时间分辨率:30分钟 数据时段:1998年1月1日至今 b) 逐小时CMORPH数据 输出变量:降水率,单位为毫米每小时(mm/h) 空间分辨率:0.25°经纬度 空间覆盖范围:全球(南北纬60°) 时间分辨率:逐小时 数据时段:1998年1月1日至今 c) 逐日CMORPH数据 输出变量:日降水量,单位为毫米每天(mm/day) *注:本文档打印于2015年6月8日,使用前请核实文档时效性。 空间分辨率:0.25°经纬度 空间覆盖范围:全球(南北纬60°) 时间分辨率:逐小时 数据时段:1998年1月1日至今 上述b类与c类数据均源自原始分辨率的CMORPH数据(即a类数据),且在定量结果上与原始数据保持一致。
提供机构:
NOAA National Centers for Environmental Information
创建时间:
2019-04-15
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