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SGP97 Upper Air: DOE ARM 50 MHz Profiler Winds

Metadata Updated: September 21, 2023

The Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) 50 MHz Radar Wind Profiler and Radio Acoustic Sounding System (RASS) Vertical Profiles is one of various data sets provided for the Southern Great Plains 1997 (SGP97) project. This data set contains vertical profiles of virtual temperature and wind speed and direction every hour taken at the Central Facility. This data set covers the period from 1 June through 31 July 1997. The SGP97 domain is approximately 97W to 99W longitude and 34.5N to 37N latitude. These data are in their original NetCDF format. The 50-MHz Radar Wind Profiler/RASS (RWP50) measures wind profiles from (nominally) 2 to 12 km and virtual temperature profiles from 2 to 4 km. It operates by transmitting electromagnetic energy into the atmosphere and measuring the strength and frequency of backscattered energy. Virtual temperatures are recovered by transmitting an acoustic signal vertically and measuring the electromagnetic energy scattered from the acoustic wavefront. The propagation speed of the acoustic wave is proportional to the square root of the virtual temperature. The primary quantities measured with the system are the intensity and Doppler frequency of backscattered radiation. The wind speed is determined from the Doppler frequency of energy scattered from refractive index fluctuations (caused primarily by temperature fluctuations) embedded within the atmosphere; the virtual temperature is determined from the Doppler frequency of microwave energy scattered from acoustic energy propagating through the atmosphere. No additional quality control was performed by the University Corporation for Atmospheric Research/Joint Office for Science Support (JOSS).

Access & Use Information

Public: This dataset is intended for public access and use. License: Creative Commons Attribution

Downloads & Resources

Dates

Metadata Created Date November 10, 2020
Metadata Updated Date September 21, 2023

Metadata Source

Harvested from USDA JSON

Additional Metadata

Resource Type Dataset
Metadata Created Date November 10, 2020
Metadata Updated Date September 21, 2023
Publisher Agricultural Research Service
Maintainer
Identifier 58f943c4-6d18-427b-a049-c142d118027c
Data Last Modified 2022-01-05
Public Access Level public
Bureau Code 005:18
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 9aea0cdf-6881-453b-8175-0fda695f2b09
Harvest Source Id d3fafa34-0cb9-48f1-ab1d-5b5fdc783806
Harvest Source Title USDA JSON
License https://creativecommons.org/licenses/by/4.0/
Old Spatial {"type":"Polygon","coordinates":-97.5,36.7,-97.4,36.7,-97.4,36.6,-97.5,36.6,-97.5,36.7}
Program Code 005:040
Source Datajson Identifier True
Source Hash ab37fa1fca82923e59a05eccb4fc5b31d2398dcebfde8deba18e6cbb8e954b5d
Source Schema Version 1.1
Spatial {"type":"Polygon","coordinates":-97.5,36.7,-97.4,36.7,-97.4,36.6,-97.5,36.6,-97.5,36.7}

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