Retrieve and Display CRN Data

Use this application to investigate data from NOAA's Climate Reference Network (USCRN) at The data are stored in space-delimited ASCII text files. See this link for a detailed description of the data format. See this link for a list of parameters in the file. Regional sites (USRCRN) are marked (R) and include only air temperature and precipitation data.

Select data here. (Sites marked (R) are regional sites (USRCRN).)

Year:Month:CRN Site:
Select data sets for output option 2:
Tavg Tmax Tmin °C
precipitation mm
Savg Smax Smin W/m2
T_surfaceavg T_surfacemax T_surfacemin °C
T_soil (5, 10 20, 50, 100 cm) °C
soil moisture (5, 10, 20, 50, 100 cm) (water volume)/(sample volume)
RHavg %

Lower and upper values for graphing temperatures (air or soil), ° C:
Lower:     Upper:
Lower and upper values for graphing soil moisture, 0.0 – 1.0:
Lower:     Upper:
Number of y-axis divisions:*
*For temperatures, take range into account to create whole number
y-axis labels. For soil moisture, y-axis division should be 0.05 or 0.1.

Select an output option here:
1. Display first and last data for specified site and year.
2. Retrieve all checked parameters for a specified year and location, in text format.
3. Graph air temperature.
4. Graph surface temperature (limited data available).
5. Graph insolation (earlier years may have only average value).
6. Graph relative humidity (limited data available) and precipitation.
7. Graph soil temperature, 5, 10, 20, 50, 100 cm (1st site, Lincoln, NE, August 2009).
8. Graph soil moisture, 5, 10, 20, 50, 100 cm (1st site, Lincoln, NE, August 2009).
If you selected option 3-8:

Starting day (1-31, as appropriate): How many days?