Cooperative Observer Program (COOP) Hourly Precipitation Data (HPD), Version 2
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title: Cooperative Observer Program (COOP) Hourly Precipitation Data (HPD), Version 2
alternateTitle: COOP-HPD v2
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date: 2018-05-31
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Anchor: DOI doi:10.25921/p7j8-2170
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code: NCEI DSI 3243_03
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individualName: Wuertz, David
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individualName: Lawrimore, Jay
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individualName: Korzeniewski, Bryant
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abstract: The Cooperative Observer Program (COOP) Hourly Precipitation Data (HPD) consists of quality controlled precipitation amounts, which are measurements of hourly accumulation of precipitation, including rain and snow for approximately 2,000 observing stations around the country, and several U.S. territories in the Caribbean and Pacific from the National Weather Service (NWS) Fischer-Porter Network. This new version of COOP HPD with faster automations due updated stations will result in faster access for the public. The data are from 1940 to present, depending upon when each station was installed. These stations, nearly all of which were part of HPD version 1, also known as DSI-3240, were gradually upgraded from paper punch tape data recording systems to a more modern electronic data logger system from 2004-2013. The 15-min gauge depth time series are processed at NCEI via automated quality control and filtering algorithms to identify and remove spurious observations from noise and malfunctioning equipment, and also those due to natural phenomena such as evaporation and the necessary occasional emptying of the gauge. Hourly precipitation totals are then computed from the 15-min data and are quality controlled by a suite of automated algorithms that combine checks on the daily and hourly time scale. Data and metadata are ingested on a daily basis and combined in a single integrated dataset. As with the legacy punch paper instrumentation, the electronic loggers record rain gauge depth every 15 minutes. Monthly site visits to each station are still performed, but instead of collecting punched paper (that would subsequently need conversion to a digital record via a MITRON reader), data are downloaded from the station's datalogger to a memory stick and centrally collected at the local Weather Forecast Office (WFO) for all stations in the WFO area. The WFO subsequently combines all data into a single tar file and transfers the data to NCEI via ftp upload nominally each month. This updated HPD includes the historical data from the punch paper era and the recent digital era in order to provide the full period of record for each location. These data are formatted consistent with practices for NCEI Global In-situ datasets.
purpose: This data set provides precipitation amounts on an hourly timescale for stations in the Fischer-Porter network.
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useLimitation: The punch paper (legacy) system provided observations to 0.10". The newer network of digital recorders provides data to 0.01". However, it is important to note that the stated accuracy of the gauges remains 0.10". Although hourly totals are provided to hundredths of an inch, users should not that the presence of noise in the record can create spurious light precipitation amounts while also making it difficult to always identifying actual light amounts (<0.05").
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otherConstraints: Cite as: Wuertz, David; Lawrimore, Jay; and Korzeniewski, Bryant (2018). Cooperative Observer Program (COOP) Hourly Precipitation Data (HPD), Version 2.0. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.25921/p7j8-2170 [access date].
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otherConstraints: Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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otherConstraints: Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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statement: This is a new version that follows the legacy Hourly Precipitation Data (HPD), version 1, (DSI-3240) that has been maintained at NCEI (formerly NCDC) since at least the 1980s. The HPD network has operated since the middle of the 20th century, providing 15-minute precipitation observations and hourly totals for approximately 2000 stations. It originally consisted of several different weighing rain gauge instruments before F&P gauges, with automated readout recorded on paper tape, were phased into the network in the early 1960s. Small changes in the number of stations have occurred throughout the period of record, but the number of stations remains near 2000. Additional information is available in the ATBD (Algorithm Theoretical Basis Document).
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description: Hourly precipitation totals from the National Weather Service (NWS) Fischer-Porter stations that are part of the NWS Cooperative Observers Network.
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linkage: https://www.ncei.noaa.gov/contact
protocol: HTTPS
applicationProfile: Web Browser
name: National Weather Service (NWS) Fischer-Porter Network - Precipitation
description: Raw 15 minute prlsecipitation from the National Weather Service (NWS) Fischer-Porter Network stations.
function: (CI_OnLineFunctionCode) information
role: (missing)
sourceExtent: (EX_Extent)
geographicElement: (EX_GeographicBoundingBox)
extentTypeCode: 1
westBoundLongitude: 130
eastBoundLongitude: 60
southBoundLatitude: 22
northBoundLatitude: 55
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 2006-03-01
endPosition:
sourceStep: ps001
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) repository
levelDescription: (MD_ScopeDescription)
other: NOAA National Centers for Environmental Information
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
dateTime:
DateTime: 2015-04-22T00:00:00
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded
maintenanceNote: Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.