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If you do not wish for long-term averages to be used to fill in data gaps, click on the station name and select "do not fill gaps.".All stations have a recommended long-term average for air temperature, and some have a recommended average for soil temperature.If a data value for a date is not available from the selected station or either of the backup stations, the long-term average for the date will be used if a station is recommended in the table. Any data gaps will be filled in from the backup stations, if possible. Backup station 1 is used first to supply missing data if the data value for the date is also missing in Backup station 1, Backup station 2 will be used.If "none recommended" is shown, no station is considered to be similar enough to the selected station to be used as a backup.If you do not want to include substitutes for missing data, click on the backup station name and select "do not fill gaps." When a station is listed, do nothing if you want it to supply data when data from the selected station is missing.Shown will be either a station name or "none recommended." Backup stations listed in the table are nearby stations that can be used to fill in data gaps.
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The request for data will be filled first from the selected station, then from the backup and long-term average stations, left to right. In the table, click on the radio button next to a variable name to mark it for retrieval. The Step 5 table includes the variables stored for the selected station, and below it is some additional information about the measurements that may be helpful. Select the temperature variable and backup stations.To add long-term averages (as a climatological "forecast") to the end of your data request, indicate an ending date that is in the future, beyond yesterday's date.The default dates supplied by the computer are usually March 15 of the current year and the last date for which the selected station can be expected to have data.From the lists, indicate the first date (month, day, and year) for which you want to calculate degree-days, and the last date (month, day, and year). Select a time period, a range of dates.In case your selected county doesn't have the station you're looking for, tables of stations located in surrounding counties are also shown. A table lists the temperature variables and time period for which data are stored, and whether long-term averages have been calculated and are available. Select a weather station from the list of stations available in the selected county.Select the county in which you're interested.Overview of variables, time periods, and averages available for Automatic, TouchTone, Climate, and PestCast stations In 1996 it was converted to run on a new computer, with access through the World Wide Web. The database originated in 1980 as part of the original IMPACT online computer system and stores both current and historical daily weather data for approximately 350 weather stations throughout California. Weather data for the calculations may come from the UC IPM database for California, a file you supply, or data you enter online. You can run preset models that have been recommended by UC Cooperative Extension, or you can specify the thresholds and method of calculation for any model. This degree-day calculator has two branches.
#AVERAGE WEATHER CALCULATOR HOW TO#
How to Manage Pests Degree-Days: Using the Calculator | Run models | About degree-days |