CPC .25x.25 Daily US UNIFIED Precipitation
Entry ID: noaa_cdc053

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Summary
Abstract: Dataset is derived from 3 sources: NCDC daily co-op stations
(1948-...), CPC dataset (River Forecast Centers data + 1st order
stations - 1992-...), and daily accumulations from hourly
precipitation dataset (1948-...). There are about 13000 station
reports each day for 1992-..., and about 8000 reports before that
yielding about 3x the reports of any existing historic and operational
analyses as of 2000. Future versions of the unified will also include
any other raingauge precip datasets. The data were QC-ed to eliminate
duplicates and overlapping stations, and standard deviation and buddy
checks were applied.. Then they were gridded into 0.25x 0.25,
140W-60W, 20N-60N using a Cressman Scheme. Landmask is such that
actual data resides between 20N-49.5N (lat grids 1-118) and 233.75E to
292.75 (lon grids 56-292). Values are for over the continental
US. Data is daily from 1948-1998 and with no missing grids. A
land-sea mask is supplied.

NOAAServer Codes: [POL 20 60 -140 -60] ; dateline preview obtain


Storage Medium - Online


Purpose: Scientific research.

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Geographic Coverage
 N: 60.0 S: 20.0  E: -60.0  W: -140.0

Data Set Citation
Dataset Originator/Creator: NOAA-CIRES Climate Diagnostics Center
Dataset Title: CPC .25x.25 Daily US UNIFIED Precipitation
Dataset Release Place: Boulder, CO
Dataset Publisher: NOAA-CIRES Climate Diagnostics Center
Online Resource: http://www.cdc.noaa.gov/cdc/data.unified.html


Temporal Coverage
Start Date: 1948-01-01
Stop Date: 1998-12-31


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA


Data Resolution
Latitude Resolution: 0.25 degree
Longitude Resolution: 0.25 degree


Science Keywords
ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE


Access Constraints
None.


Use Constraints
None. Acknowledgement of CDC would appreciated in products derived
from these data.


Keywords
CPC .25x.25 Daily US UNIFIED Precipitation [POL 20.00 60.00 -140 -60]
Precipitation


Data Set Progress
COMPLETE


Data Center
Climate Analysis Branch, Physical Sciences Division, Earth System Research Laboratory, OAR, NOAA, U.S. Department of Commerce    [Information]
Data Center URL: http://www.esrl.noaa.gov/psd/psd1/
Dataset ID: CDC053

Data Center Personnel
Name: ESRL/PSD DATA INQUIRIES
Email: esrl.psd.data at noaa.gov


Personnel
ESRL/PSD DATA INQUIRIES
Role: TECHNICAL CONTACT
Role: DIF AUTHOR
Email: esrl.psd.data at noaa.gov


Publications/References
Higgins, et al., R. W., 2000: Improved US Precipitation Quality
Control System and Analysis. NCEP/Climate Prediction Center ATLAS
No. 6 (in preparation). Available on-line:
http://www.cpc.ncep.noaa.gov/research_papers/ncep_cpc_atlas/7/index... .

Higgins, R. W., J. E. Janowiak, and Y.-P. Yao, 1996: A gridded hourly
precipitation data base for the United States
(1963-1993). NCEP/Climate Prediction Center Atlas 1, national Centers
for Environmental Prediction, 46pp.

Creation and Review Dates
DIF Creation Date: 2002-03-25
Last DIF Revision Date: 2009-07-15

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