Subnivean Level 2 Data Retrieval

Level 2H data are the Level 1 data collapsed to hourly means. Air temperature, relative humidity, and wind speed are provided for the 2.0 m height only. Means and SD's of the preliminary fluxes are also available.

Level 2D data are the Level 1 data collapsed to daily means. Air temperature, relative humidity, and wind speed are provided for the 2.0 m height only. Means and SD's of the preliminary fluxes are also available.

NOTE: All metadata pertaining to the time period you select will be appended to the beginning of the data file. This includes all comments and ancillary information for that period, even for the instruments that are not selected or are not available as Level 2 data.

Period for Data Acquisition

Specify the beginning and ending dates (year and month) for which you would like to receive data. The data record will begin at 0000 hours on the beginning date and end with the last observation on the ending date (i.e. 2350 for 10-minute data, 2300 for hourly data). Daily data records will be inclusive of the dates you specify.
Available Data from 9608 to 0812
Beginning Date (e.g. 9608): Ending Date (e.g. 9609):

SUBNIVEAN DATA

Check the appropriate boxes below to specify the particular data you wish to receive. At the end of the form, send your request by pushing the send button, or you may clear the form and start over. If you simply want to receive all available data for the time period you've specified, check the boxes immediately following and send you request from here.

SEND ME ALL AVAILABLE HOURLY DATA

SEND ME ALL AVAILABLE DAILY DATA

Data Level Selection

Select the data level(s) you want to retrieve.

Level 2H (Hourly) Level 2D (Daily)

Radiometric Data

ALL RADIOMETER DATA

Incident Shortwave
Reflected Shortwave
Atmospheric Longwave
Terrestrial Longwave
Net Radiation
Global Shortwave (Direct + Diffuse)
Diffuse Shortwave

Aerodynamic Profile Data

ALL AERODYNAMIC PROFILE DATA

Air Temperature, 2.0 m Height
Relative Humidity, 2.0 m Height
Wind Speed, 2.0 m Height
Wind Direction, 2.0 m Height
Barometric Pressure

Lysimeter Data

ALL LYSIMETER DATA

Paired 1 m^2 lysimeters (2)
0.2 m^2 lysimeter array (16)

Computed Values

ALL TURBULENT FLUX QUANTITIES

Sensible Heat Flux
Latent Heat Flux
Richardson Number
Saturation Vapor Pressure
Vapor Pressure

Simple Albedo

Direct Beam Radiation

Net Radiation (sum of four individual components)

or .

Return to Niwot Ridge Subnivean Data Retrieval System Home Page

If any problems arise please e-mail
Todd Ackerman (todda@culter.colorado.edu)