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Cooperative Network Narrative

Introduction
Provides an overview of the Cooperative Network.
Performance Indicators
Table listing of the performance indicators and their descriptions.
Data Availability and Source
Table listing of the period of record for the performance indicators and their various data sources.
Report Descriptions
Decriptions of the quality, completeness, validity, and station reports.
Research and Contributors
Lists the project contributors and the on-going research.

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Return to the top symbol PERFORMANCE INDICATORS
INDICATOR DEFINITION
Observing Platforms Number of stations available including digital versus non-digital; temp only; precip only ; both
Period of Record Number of stations open for 100+, 50+, 25+, 10+ years beginning in 1887 with no significant breaks of either 18 consecutive or 24 total months. Period of record is determined from the station history metadata records and may not directly correspond with the data record.
Receipt Timeliness Percent of stations whose data was received 01-10 days, 11-20 days, 21-30 days, 31-60 days, and greater than 60 days after month's end
Data Completeness Percent of digital data present for TMAX, TMIN, TOBS, PRCP, SNOW, SNWD
Data Quality Percent of unflagged data for TMAX, TMIN, TOBS, PRCP, SNOW, SNWD. Does not count missing as an error.
Data Validity Percent of unflagged and non-missing data for TMAX, TMIN, TOBS, PRCP, SNOW, SNWD. Does count missing as not valid.
Instrumentation Changes Number of temperature and preciptation instrument changes.
Station Moves Number of station moves not requiring an ID change. (note: updated GPS-based locations were added to the station history in the early 2000s as a part of the CSSA system implementation.)
Ob Practice Changes Number of observation practice changes including obs time for temperature and precipitation and observer changes.
Maintaining Homogeneity Under Development: Percent of stations with minimal homgeneity issues; including Maximum Likelihood Ratio and Two Phase Regression testing

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Return to the top symbol DATA AVAILABILITY and SOURCE
INDICATOR AVAILABILITY SOURCE(S)
Observing Platforms 1867-1947
1948-current		 CDMP - TD3206
Archive - TD3200
Period of Record 1867-current SHIPS/CSSA
Receipt Timeliness 1996-2000
2000-current		 ARC Database
WV - Forms Receipt
Data Completeness 1867-1947
1948-current		 CDMP - TD3206
Archive - TD3200
Data Quality 1982-current Archive - TD3200
Data Validity 1982-current Archive - TD3200
Instrumentation Changes 1867-current SHIPS/CSSA
Station Moves 1867-current SHIPS/CSSA
Ob Practice Changes 1867-current SHIPS/CSSA
Maintaining Homogeneity tbd MLR/TPR

SOURCE DESCRIPTION
CDMP Climate Database Modernization Project
Archive NCDC Data Archives
SHIPS Station History Information Processing System
CSSA Cooperative Station Service Accountability
ARC Database Original Forms Receipt database
WV COOP forms processing center
MLR Maximum Likelihood Ratio Test
TPR Two Phase Regresssion Test
Aux other time-dependent bias detection processes

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Return to the top symbol REPORT DESCRIPTIONS

Monthly Data Quality Assurance Report by NWS Region or State
Quality assurance reports are generated by NWS region or state and are sorted by Weather Forecast Office (WFO). Values flagged for error defaulted to 8% or more.

Monthly Data Completeness Report by NWS Region or State
Data completeness reports are generated by NWS region or state and are sorted by Weather Forecast Office (WFO). Values flagged for error defaulted to 80% or less.

Monthly Data Validity Report by NWS Region or State
Data validity reports are generated by NWS region or state and are sorted by Weather Forecast Office (WFO). Values flagged for error defaulted to 8% or more for quality and 80% or less for completeness.

Monthly Station Snapshot
Monthly station snapshots provide detailed completeness, quality, and validity information for a given station/yearmonth.

Cooperative Station Changepoint Detection List
The station changepoint detection list is generated from the non-climatic changepoint detection routines. Stations appearing on the watchlist have detected changepoints for Max Temp, Min Temp, or both. Changepoint dates that do not lie within a 6-month metadata change date window, are presented in bold text.

Cooperative Station Watchlist
The station watchlist is generated from the non-climatic changepoint detection routines and includes only those stations with a changepoint in the past 12 months that does not have a corresponding 6-month window metadata change.

Cooperative Station Watch Report
The station watch report includes both information from the non-climatic changepoint detection routines and metadata changes.

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Return to the top symbol RESEARCH and CONTRIBUTIONS
NWS Cooperative Observer Network Spacing Plan
Stephen DelGreco, National Climatic Data Center (NCDC)

Maximum Likelihood Ratio/Two Phase Regression Test (MLR/TPR)
Matthew Menne, National Climatic Data Center (NCDC)
Claude Duchon, Univeristy of Oklahoma - School of Meteorology
Claude Williams, National Climatic Data Center (NCDC)

Precipitation Bias Detection
Barbara Brown, National Center Center for Atmospheric Research (NCAR)

Time of Observation Change Detection
Arthur T. DeGaetano, Northeast Regional Climate Center

Graphical Display and Enhanced GIS Functions
Teb Habermann, National Geophysical Data Center (NGDC)

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Image of the NOAA symbol NCDC / Monitoring / Health of the Networks / U.S. In Situ / Coop / Narrative

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For information pertaining to this page or any other Health of the Networks related questions:
NCDC.Network.Performance@noaa.gov