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United States Historical Climatology Network Daily Temperature, Precipitation, and Snow Data (1871-2002), CDIAC/NDP-070
Entry ID: CDIAC_NDP070


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Summary
Abstract: [Summary from the online documentation at:
"http://cdiac.esd.ornl.gov/epubs/ndp/ndp070/ndp070.html"]

The daily U.S. Historical Climatology Network (HCN) data has been extended
through 2002 and is now available through a new graphical interface:
"http://cdiac.esd.ornl.gov/epubs/ndp/ushcn/daily.html"

This database contains daily observations of maximum and minimum temperature,
precipitation amount, snowfall amount, and snow depth from 1062 observing
stations across the contiguous United States. This NDP is an expansion and
update of the original 138-station database previously released by CDIAC as
NDP-042 in 1992 (See: "http://cdiac.esd.ornl.gov/ndps/ndp042.html"). The 1062
stations in NDP-070 are a subset of the 1221-station U.S. Historical
Climatology Network (HCN), a monthly database also compiled at NCDC that has
been widely used in analyzing U.S. climate.

Data from 1050 of the NDP-070 daily records extend into the 1990s, while 990 of
these extend through 1997. See
"http://cdiac.esd.ornl.gov/epubs/ndp/ushcn/usa.html" for access to the most
recent data. Most station records are essentially complete for at least 40
years; the latest beginning year of record is 1948. Records from 158 stations
begin prior to 1900, with that of Charleston, South Carolina beginning the
earliest (1871). The daily resolution of these data makes them extremely
valuable for studies attempting to detect and monitor long-term climatic
changes on a regional scale. Studies using daily data may be able to detect
changes in regional climate that would not be apparent from analysis of monthly
temperature and precipitation data. Such studies may include analyses of trends
in maximum and minimum temperatures, temperature extremes, daily temperature
range, precipitation "event size" frequency, and the magnitude and duration of
wet and dry periods. The data are also valuable in areas such as regional
climate model validation and climate change impact assessment. The NDP consists
of the document and 57 files: 48 daily data files (containing records from
stations in each of the 48 contiguous states), station inventory and station
history files, a text file describing all data files, and 6 files containing
computer software routines for reading the data.

Related URL
Link: GET DATA
Description: NDP-070 ftp directory of data files and documentation.


Link: GET DATA
Description: Access to daily HCN data using the CDIAC graphical browser. Data through 2002
can be accessible through this interface.


Link: VIEW RELATED INFORMATION
Description: NDP-042 Historical Climatology Network data from CDIAC.


Geographic Coverage
 N: 50.0 S: 20.0  E: -63.0  W: -130.0

Data Set Citation
Dataset Originator/Creator: D. R. Easterling, T. R. Karl, J. H. Lawrimore, and S. A. Del Greco
Dataset Title: United States Historical Climatology Network Daily Temperature, Precipitation, and Snow Data for 1871-2002
Dataset Series Name: U. S. HCN Daily Temperature, Precipitation, and Snow Data for 1871-2002
Dataset Release Date: 1999
Dataset Release Place: Oak Ridge, TN
Dataset Publisher: CDIAC
Version: April 2004
Issue Identification: NDP-070
Online Resource: http://cdiac.esd.ornl.gov/epubs/ndp/ushcn/newushcn.html


Temporal Coverage
Start Date: 1871-01-01


Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
CONTINENT > NORTH AMERICA
GEOGRAPHIC REGION > NORTHERN HEMISPHERE


Data Resolution
Temporal Resolution: Daily


Science Keywords
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >AIR TEMPERATURE    [Definition]
ATMOSPHERE >ATMOSPHERIC TEMPERATURE >MAXIMUM/MINIMUM TEMPERATURE    [Definition]
ATMOSPHERE >PRECIPITATION >PRECIPITATION AMOUNT    [Definition]
ATMOSPHERE >PRECIPITATION >SNOW    [Definition]
CRYOSPHERE >SNOW/ICE >SNOW DEPTH    [Definition]
TERRESTRIAL HYDROSPHERE >SNOW/ICE >SNOW DEPTH    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
GEOSCIENTIFIC INFORMATION
INLAND WATERS


Platform
GROUND STATIONS    [Information]


Project
HCN >Historical Climatology Network    [Information]


Quality
CDIAC perfoms extensive quality checks on the data set.
See http://cdiac.esd.ornl.gov/ftp/ndp070/ndp070.txt for details.


Access Constraints
None.


Use Constraints
None.


Keywords
CDIAC
CLIMATOLOGY
HCN
NDP-070


Data Set Progress
COMPLETE


Originating Center
CDIAC


Data Center
Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, U. S. Department of Energy    [Information]
Data Center URL: http://cdiac.ornl.gov/
Dataset ID: NDP-070

Data Center Personnel
Name: CARBON DIOXIDE INFORMATION ANALYSIS CENTER
Fax: (865) 574-2232
Contact Address:
Carbon Dioxide Information Analysis Center (CDIAC)
Oak Ridge National Laboratory
P.O.. Box 2008
City: OAK RIDGE
Province or State: TENNESSEE
Postal Code: 37831-6335
Country: USA



Distribution
Distribution_Media: online ftp, WWW
Distribution_Format: ASCII
Fees: None.


Personnel
S. A. DEL GRECO
Role: INVESTIGATOR
Contact Address:
National Climatic Data Center
Federal Building
151 Patton Ave.
City: Asheville
Province or State: NC
Postal Code: 28801-5001
Country: USA


DAVID R. EASTERLING
Role: INVESTIGATOR
Phone: 704-271-4245
Email: deasterl at ncdc.noaa.gov
Contact Address:
National Climatic Data Center
Global Climate Laboratory
Federal Building
151 Patton Avenue
City: Asheville
Province or State: NC
Postal Code: 28801-5001
Country: USA


THOMAS R. KARL
Role: INVESTIGATOR
Contact Address:
National Climatic Data Center
Global Climate Laboratory
Federal Building
151 Patton Avenue
City: Asheville
Province or State: NC
Postal Code: 28801-5001
Country: USA


JAY LAWRIMORE
Role: INVESTIGATOR
Email: jay.lawrimore at noaa.gov
Contact Address:
Climate Monitoring Branch
National Climatic Data Center
City: Asheville
Province or State: NC
Postal Code: 28801-5001
Country: USA


Publications/References
See:
http://cdiac.esd.ornl.gov/ftp/ndp070/ndp070.txt
for an extensive set of references

Creation and Review Dates
DIF Creation Date: 1999-07-07
Last DIF Revision Date: 2004-06-04


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