The objective of CHATS was to make spatial measurements of the velocity and scalar turbulence fields in a uniformly vegetated canopy, using arrays of sonic anemometer/thermometers augmented with fast response water vapor and carbon dioxide sensors. With this spatial information, the three-dimensional fields of velocity and scalar fluctuations can be studied to quantify turbulence transport processes and coherent structures throughout the canopy layer. An ancillary goal was to characterize the turbulent structure of the fields of wind, temperature, humidity, and trace chemical species within and above the orchard canopy. The main sonic array was supplemented with a 30-m vertical profile of 16 sonic anemometers and 12 hygrothermometers, extending from near the surface, through the canopy and roughness sublayer, to well above canopy top. Also requested are fast-response static pressure sensors and hot-wire/film anemometers to be collocated with the sonic anemometers in the horizontal array, as well as a digital camera system to measure leaf area index (LAI). Finally radiation and soil measurements were made to complete the thermal energy budget of the canopy. This dataset contains Sound Detection and Ranging (SODAR) data collected by the NCAR/EOL Integrated Sounding System (ISS) during the CHATS campaign and is available in raw ASCII format. These data have not been quality-controlled.

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Temporal Range

  • Begin:  2007-03-07T00:00:00Z
    End:  2007-06-14T23:59:59Z


Resource Type dataset
Temporal Range Begin 2007-03-07T00:00:00Z
Temporal Range End 2007-06-14T23:59:59Z
Temporal Resolution N/A
Bounding Box North Lat 38.00000
Bounding Box South Lat 38.00000
Bounding Box West Long -121.00000
Bounding Box East Long -121.00000
Spatial Representation N/A
Spatial Resolution N/A
Related Links N/A
Additional Information N/A
Resource Format N/A
Standardized Resource Format UNDEFINED FORMAT
Asset Size 257 MB
Legal Constraints


Access Constraints none
Software Implementation Language N/A

Resource Support Name EOL Data Support
Resource Support Email
Resource Support Organization UCAR/NCAR - Earth Observing Laboratory
Distributor UCAR/NCAR - Earth Observing Laboratory
Metadata Contact Name EOL Data Support
Metadata Contact Email
Metadata Contact Organization UCAR/NCAR - Earth Observing Laboratory

Author UCAR/NCAR - Earth Observing Laboratory
Publisher UCAR/NCAR - Earth Observing Laboratory
Publication Date 2016-06-08T18:17:46
Digital Object Identifier (DOI)
Alternate Identifier 129.004
Resource Version 1.0
Topic Category climatologyMeteorologyAtmosphere
Progress completed
Metadata Date 2021-10-01T16:05:10Z
Metadata Record Identifier edu.ucar.eol::129.004
Metadata Language eng; USA
Suggested Citation UCAR/NCAR - Earth Observing Laboratory. (2016). CHATS ISS SODAR Data. 1.0. UCAR/NCAR - Earth Observing Laboratory. Accessed 04 October 2023.

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