Colorado Climate Center Web Services

Intro

The CoAgMet Web Services consists of four types of calls - meta, monthly, daily and hourly. Each of these calls is documented below. Each call has its own parameters that may be required required and optional parameters that let you further refine your request.

Basic calls can be made via http requests from a web browser with the complete call specified in the URL.

Examples

To request metadata for the CoAgMet network, use:

   http://coagmet.colostate.edu/cgi-bin/web_services.pl?type=meta

To request metadata for NW Colorado, use:

   http://coagmet.colostate.edu/cgi-bin/web_services.pl?type=meta&bbox=39,-105,41,-102

To request 2010 hourly temperature and precipitation data for stations ftc01 and ftc03, use:

   http://coagmet.colostate.edu/cgi-bin/web_services.pl?type=hourly&sids=ftc01,ftc03&sdate=2010-01-01&edate=2010-12-31&elems=tmean,pp

To extract 5 minute Summer 2017 temperature and preciptations for ARDEC use:

  http://coagmet.colostate.edu/cgi-bin/web_services.pl?type=five_minute&sids=ftc03&sdate=2017-06-01&edate=2017-08-31&elems=tmean,pp

General

This section describes parameters that common to all requests.

Note.

Items in italics are not yet implemented.

Metadata

Monthly Data (CoAgMet, Coop and SNOTEL)

Monthly data is returned as a comma delimited file with one line for each year.
Record format:

Data elements

ElementDescription
DP01 Number of days with >= 0.1 inches precipitation.
DP05 Number of days with >= 0.5 inches precipitation.
DP10 Number of days with >= 1.0 inches precipitation.
DSNW Number of days with snowdepth >= 1 inches.
DT00 Number of days with min. temp. <= 0 deg.F.
DT32 Number of days with min. temp. <= 32 Deg.F.
DT90 Number of days with max. temp. >= 90 Deg.F.
DX32 Number of days with max. temp. <= 32 Deg.F.
EMXP Extreme max. daily precip. and day of occurence. (Deg.F.)
EMNT Extreme min. temp. and day of occurence. (Deg.F.)
EMXT Extreme max. temp. and day of occurence. (Deg.F.)
HTDD Monthly heating degree days, 65 Deg.F base.
CLDD Monthly cooling degree days, 65 deg.F base.
CGDD Monthly corn growing degree days, 65 deg.F base.
MMNT Monthly mean minimum temperature. (0.1's Deg.F.)
MMXT Monthly mean maximum temperature. (0.1's Deg.F.)
MNTM Monthly mean temperature. (0.1's Deg.F.
MXSD Maximum snowdepth and day of occurence. (inches)
TPCP Total monthly precipitation. (0.01's inches)
TSNW Total monthly snowfall. (0.1's inches)
RFET Total monthly reference evapotranspiration. (0.01's inches)
Data codes
CodeDescription
Aaccumulated amount
BAdjusted total
EEstimated
IIncomplete, 1-9 days missing
MMissing
SPrecipitation is continuing to be accumulated
Ttrace
+multiple occurences

Daily CoAgMet Data

IndexTypeUnits
date Datetime YYYY-MM-DD
taveMean Temperature Celsius
tmaxMaximum Temperature Celsius
mxtmTime of Maximum Temperature HH:MM:SS
tminMinimum Temperature Celsius
mntmTime of Minimum Temperature HH:MM:SS
vpVapor Pressure kPa
rhmaxMaximum Relative Humidity Fraction
rhmxtmTime of Maximum Relative Humidity HH:MM:SS
rhminMinimum Relative Humidity Fraction
rhmntmTime of Minimum Relative Humidity HH:MM:SS
srSolar Radiation MJ/m^2
wrunWind_Run km/day
ppPrecipitation millimeters
st5mxMaximum Soil Temperature at 5cm Celsius
st5mxtmTime of Maximum Soil Temperature at 5cm HH:MM:SS
st5mnMinimum Soil Temperature at 5cm Celsius
st5mntmTime of Minimum Soil Temperature at 5cm HH:MM:SS
st15mxMaximum Soil Temperature at 15cm Celsius
st15mxtmTime of Maximum Soil Temperature at 15cm HH:MM:SS
st15mnMinimum Soil Temperature at 15cm Celsius
st15mntmTime of Minimum Soil Temperature at 15cm HH:MM:SS
voltsBattery Voltage
yearYear of data
gustMaximum daily wind gust m/s
gusttmTime of maximum daily wind gust min into day NOT HH:MM as other max/min
gustdirDirection of maximum daily wind gust deg
etrDaily ASCE Reference ETmm per day
etr_pkPenman-Kimberly Reference ETmm per day
etr_hlySummed hourly ASCE Reference ETmm per day

Daily Coop Data

TypeTypeUnits
TMAX Maximum Temperature Degrees F.
TMIN Minimum Temperature Degrees F.
PRCP Precipitation 0.01 inches
SNOW Snowfall 0.1 inches
SNDP Snow depth on the ground inches

CodeDescription
mmissing
ttrace
aaccumulated period
hhail (Ft Collins only)

Daily SNOTEL Data

TypeTypeUnits
TMAX Maximum Temperature Degrees F.
TMIN Minimum Temperature Degrees F.
PRCP Precipitation 0.01 inches
SNOW Snowfall 0.1 inches
SNDP Snow depth on the ground inches

CoAgMet Hourly Data Format

IndexTypeUnits
datetime Datetime YYYY-MM-DD HH:MM:SS
tmean Mean Temperature Celsius
rh Relative Humidity Fraction
vp Vapor Pressure kPa
sr Solar Radiation kJ/m^2 * min
ws Mean Wind Speed m/s
wind_vec Vector Average Wind Direction Degrees
0 and 360 are north
wind_std Standard Deviation of Wind Direction Degrees
pp Precipitation millimeters
st5 Mean Soil Temp at 5cm Celsius
st15 Mean Soil Temp at 15cm Celsius
gust Wind Gust m/s
gusttm Wind Gust Time minutes into day
gustdir Wind Gust Direction Degrees
etr ASCE Reference ETmm/hr

CoAgMet Five Minute Data Format

IndexTypeUnitsType
voltBattVolt_AvgVoltsAvg
tmeanAirTemp_AvgCelciusAvg
rhRH_AvgfractionAvg
vpVap_Press_AvgkPaAvg
srHrlySolRad_AvgkJ/m^2/minAvg
wsWindSpeedm/sWVc
wind_vecWindDirDegWVc
wind_stdWindDir_STDDDeg WVc
ppRain_TotmmTot
st5SoilTemp_5cm_AvgCelciusAvg
st15SoilTemp_15cm_AvgCelciusAvg
gustHWG_speedm/sMax
gusttmHWG_time SMM
gustdirHWG_DirdegreesSMM