Your current browser is not supported by our site. We recommend using Chrome or Firefox to ensure full functionality.
Utah Climate Center banner


Network Overview

Utah's Climate Reference Network (UCRN) is a collection of 16 automated weather stations providing measurements of air temperature, relative humidity, solar radiation, wind and precipitation in near real time. The website also provides hourly and daily summary data tables and graphical displays.


UCRN was acquired from the National Oceanic and Atmospheric Administration's USRCRN program in 2015 https://www.ncdc.noaa.gov/crn/usrcrn/. These stations, commissioned from 2009 to 2011 were designed to measure highly accurate air temperatures and precipitation. Stations are in pristine locations that have stable land ownership and are geographically distributed to best determine decadal to centurial temperature and precipitation trends for Utah. Since the transfer of ownership to the Utah Climate Center, each station's sensor suite has been enhanced to include measurements of wind, solar radiation and water vapor. Cooperating partners in this retrofit endeavor include the National Weather Service in Salt Lake City and Apogee Instruments in Logan, UT.


UCRN temperature and precipitation data formats and integrity are consistent with USRCRN historical data. USRCRN data for these stations will be added in the near future.


What is measured

Air Temperature:

Five platinum resistance thermometers and one thermistor housed in aspirated radiation shields

Relative Humidity:

Two capacitive polymer chip sensors housed in aspirated radiation shields

Solar Radiation:

a heated silicon chip pyranometer

Precipitation:

A 3-sensor heated inlet weighing precipitation gauge with a 2-row alter shield and heated wetness sensor.

Wind:

A 4-blade propeller and vane sensor

*see table for sensor specifics [use the sensor table from the metadata excel file]

Output table frequency

  •     -   Current condition (5-minutes)
  •     -   Hourly
  •     -   Daily

Variables

Current condition (5-minute)

Variable Units Statistic Type Description
datint num num observation interval
netname character character UCC network name
site character character station location
siteID num num station ID
timestamp datetime datetime date and time (MST)
PRT1 °C Avg average air temperature from PRT1 in MetOne aspirated shield
PRT2 °C Avg average air temperature from PRT2 in MetOne aspirated shield
PRT3 °C Avg average air temperature from PRT3 in MetOne aspirated shield
AirTPRT °C Avg average air temperature from selected PRT in Met One shield
ST110 °C Avg average air temperature from thermistor in Apogee aspirated shield
HC2S3T °C Avg average air temperature from Rotronic PRT in Apogee aspirated shield
EE8T °C Avg average air temperature from EE8 probe
RH % Smp sampled RH at the 5-minute interval Rotronic probe
Td °C Avg average dew point temperature from Rotronic thermistor and RH
RH2 % Smp sampled relative humidity from EE probe
Td2 °C Avg average dew point temperature fromEE8
VW_Avg(1) frequency Avg last 1-minute average of vibrating wire1
VW_Avg(2) frequency Avg last 1-minute average of vibrating wire2
VW_Avg(3) frequency Avg last 1-minute average of vibrating wire3
mm1 mm Avg last 1-minute average of accumulated precipitation from vibrating wire1
mm 2 mm Avg last 1-minute average of accumulated precipitation from vibrating wire2
mm3 mm Avg last 1-minute average of accumulated precipitation from vibrating wire3
Precip_accum mm Tot accumulated precipitation (running total)
Precip5Min mm Tot precip in last 5-minutes
wet(1) mV Min minimum measurement from wetness sensor output 1 (on/off)
precip inten mV Min minimum measurement from wetness sensor output 2 (intensity)
wetness % Tot percent of 5 minutes wetness sensor is wet
Solar W/m^2 Avg average incoming (short wave) radiation from pyronometer
WindS m/s Avg average wind speed
WindD degrees Avg average wind direction
WindS_Max m/s Max maximum wind speed
FANSP1 rpm Avg average speed of MetOne fan 1
FANSP2 rpm Avg average speed of MetOne fan 2
RPM rpm Avg average speed of Apogee fan

Hourly

Variable Units Statistic Type Description
datint num num observation interval
netname num num UCC network name
site num num station location
siteID num num station ID
timestamp datetime datetime date and time (MST)
AirT °C Avg average air temperature from PRTs in Met One shield
AirT_Mx °C Max maximum 5 minute air temperature from PRTs in Met One shield
AirT_Mn °C Min minimum 5 minute air temperature from PRTs in Met One shield
RH_Mx °C Max maximum relative humidity from PRTs in Met One shield
RH_Mn °C Min maximum relative humidity from PRTs in Met One shield
Td °C Avg average dew point temperature from PRTs in Met One shield
Td_Mx °C Max maximum 5 minute dew point temperature from PRTs in Met One shield
Td_Mn °C Min minimum 5 minute dew point temperature from PRTs in Met One shield
Solar MJ/m^2 Tot total incoming (short wave) radiation from pyronometer
WindS m/s Avg average wind speed
WindD degrees Avg average wind direction
WindS_Mx m/s Max maximum wind gust
wetness % Tot percentage of the hour that wetness sensor detectected precipitation
Precip_accum mm Tot accumulated precipitation
Precip mm Tot hourly precipitation
ETo mm Tot hourly short reference ET from Etsz function
ETr mm Tot hourly tall reference ET from Etsz function
PRT1_Std °C Std standard deviation from PRT1
PRT2_Std °C Std standard deviation from PRT2
PRT3_Std °C Std standard deviation from PRT3
ST110_Std °C Std standard deviation from Apogee thermistor
HC2S3T_Std °C Std standard deviation from Rotronic PRT
StdPRT_Avg °C Std standard deviation from 3 PRTs
EE8T_Std °C Std standard deviation from EE8 PRT
GeonorInletT °C Max maximum temperature of Geonor inlet
HeaterTime % Tot percent of time that the Geonor heater was on
RefRes mV Avg Average reference resistance
DoorTime % Tot percentage of time that the enclosure door was open
Rso MJ/m^2 Smp clear sky solar radiation from Etsz utility

Daily

Variable Units Statistic Type Description
datint num num observation interval
netname num num UCC network name
site num num station location
siteID num num station ID
timestamp datetime datetime date and time (MST)
AirT °C Avg average air temperature from PRTs in Met One shield
AirT_Mx °C Max maximum 5 minute air temperature from PRTs in Met One shield
AirT_Mn °C Min minimum 5 minute air temperature from PRTs in Met One shield
RH_Mx °C Max maximum relative humidity from PRTs in Met One shield
RH_Mn °C Min maximum relative humidity from PRTs in Met One shield
Td °C Avg average dew point temperature from PRTs in Met One shield
Td_Mx °C Max maximum 5 minute dew point temperature from PRTs in Met One shield
Td_Mn °C Min minimum 5 minute dew point temperature from PRTs in Met One shield
Solar MJ/m^2 Tot total incoming (short wave) radiation from pyronometer
WindS m/s Avg average wind speed
WindD degrees Avg average wind direction
WindS_Mx m/s Max maximum wind gust
wetness % Tot percentage of the hour that wetness sensor detectected precipitation
Precip mm Tot daily precipitation
ETo mm Tot daily short reference ET from Etsz function
ETr mm Tot daily tall reference ET from Etsz function