[Parameters: Topic='AGRICULTURE', Term='AGRICULTURAL PLANT SCIENCE', Variable_Level_1='CROP/PLANT YIELDS']
Daily Normal Growing Degree Units to Selected Base Temperatures (DSI-9641I)Entry ID: gov.noaa.ncdc.C00394
Abstract: Daily Normal Growing Degree Units to Selected Base Temperatures is digital data set DSI-9641I, archived at the National Climatic Data Center (NCDC). This data set contains daily normal growing degree units (GDU) to selected base temperatures for the 1951- 1980 period. The daily GDU values in this data set represent the 30- year average GDU value for a particular base temperature to one decimal ... point. The growing degree unit normals were also published as tabular values in the NCDC product Climatography of the United States #20 (CLIM20), which is available for sale online. Graphs of cumulative daily growing degree units for bases 40, 45, 50, 55, and 60 degrees Fahrenheit for all stations in this data set are also available on microfiche at NCDC. Growing degree units are used often in agriculture as a guide in crop scheduling. They relate air temperature to plant growth and maturation, and are sometimes used for classifying regional agroclimates. Data from the NCDC Daily Surface Data set (DSI-3200) were used to produce the growing degree unit normals. Stations are in the United States of America, Puerto Rico, the US Virgin Islands, and several Pacific islands. Temperature data were put through extensive validation and interpolation procedures based upon the departure from the normal in conjunction with data from surrounding stations. As a result, the growing degree units were produced from high quality, serially complete station records of daily maximum and minimum temperatures. Station values of average daily growing degree units were computed for ten base temperatures (degrees F): 40, 45, 50, 55, 57, 60, 65, 70, and the truncated bases 48/86 and 50/86. Of these bases, 57, 65, 70, and 48/86 were not published in CLIM20, but are available only in DSI-9641I. The bases correspond to many of the common phenological cycles in the United States. The truncated bases (48/86 and 50/86) represent adjustments of the daily maximum and minimum temperatures, which better describes specific growth patterns for certain crops (specifically corn). Average growing degree units were computed by taking the average of the maximum and minimum temperatures and subtracting the base temperature from the result, summing this over 30 years, then dividing the final result by 30. If subtraction caused a negative number, zero was used in its place.
Purpose: To make a wide range of climatic data available to researchers and the public.
SUPPLEMENTAL INFORMATION: data set
CURRENTNESS REFERENCE: Ground Condition
Pricing is dependent on customer order specifications. Please contact NCDC for information on
fees and terms for retrieving the Data Set or Product.
Data Set Citation
Dataset Originator/Creator: National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
Dataset Title: Daily Normal Growing Degree Units to Selected Base Temperatures (DSI-9641I)
Dataset Release Date: Unknown
Data Presentation Form: tabular digital dataOnline Resource: http://www.ncdc.noaa.gov
Start Date: 1951-01-01Stop Date: 1980-12-31
Temporal Resolution: Daily
Temporal Resolution Range: Daily - < Weekly
Quality ATTRIBUTE ACCURACY REPORT: Not provided
LOGICAL CONSISTENCY REPORT: Unknown
COMPLETENESS REPORT: Completeness information not available.
PROCESS DESCRIPTION: Unknown
PROCESS DATE: Unknown
Access Constraints ACCESS CONSTRAINTS: None
DISTRIBUTION LIABILITY: Every effort has been made to ensure that these data are accurate and reliable within the limits of current NOAA quality control procedures. NOAA can only certify that the data provided to its customers is an authentic copy of the records which were accepted for inclusion in NOAA archives. NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Use Constraints None
Data Set Progress
Distribution Format: PDF
Fees: Please See Summary
Role: DIF AUTHOR
Email: ncdc.orders at noaa.gov
151 Patton Avenue, Room 120
Province or State: NC
Postal Code: 28801-5001
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2006-06-27
Last DIF Revision Date: 2011-07-21