xsaprsec
X-SAPR (xsaprsec)
Browse DataThe X-band Scanning ARM Precipitation Radar (X-SAPR) is an X-band dual-polarization Doppler weather radar. The X-SAPR operates in a simultaneous transmit and receive (STAR) mode, meaning that the transmit signal is split so that power is transmitted on both horizontal and vertical polarizations at the same time. The X-SAPR transmitter is a 200 kW (peak power) magnetron. The receiver is based upon the Vaisala RVP-900 and runs Vaisala s IRIS software.
In addition to the first three Doppler moments (reflectivity, radial velocity, and spectra width), the X-SAPR also provides differential reflectivity, correlation coefficient, and specific differential phases. The dual-polarization variables enable estimates of rainfall rates and identification of precipitation types. At the Southern Great Plains site, three X-SAPRs surround the Central Facility, allowing the use of multi-Doppler velocity retrievals to estimate wind fields.
Measurements
Location
- Latitude: 36.57865
- Longitude: -97.363834
- Publication Date: 2017-09-25
- Start Date: 2017-09-25
- End Date: 2018-10-01
- Last Updated: 2018-12-09
- Latitude: 36.491178
- Longitude: -97.593936
- Publication Date: 2018-05-24
- Start Date: 2018-05-24
- End Date: 2018-10-01
- Last Updated: 2018-12-09
- Latitude: 36.767569
- Longitude: -97.547446
- Publication Date: 2018-05-24
- Start Date: 2018-05-24
- End Date: 2018-10-01
- Last Updated: 2018-11-29
Instrument Mentor
Ya-Chien Feng
Pacific Northwest National LaboratoryIosif Lindenmaier
Pacific Northwest National LaboratoryVagner Castro
VMC SERVICES EIRELIMarquette Rocque
Pacific Northwest National LaboratoryAlyssa Matthews
Pacific Northwest National LaboratoryTim Wendler
Pacific Northwest National LaboratoryScott Collis
Argonne National LaboratoryScott Giangrande
Brookhaven National LaboratoryDOI / Citation
Atmospheric Radiation Measurement (ARM) user facility. 2017. X-Band Scanning ARM Precipitation Radar (XSAPRSEC). 2017-09-25 to 2018-10-01, Southern Great Plains (SGP) Billings, OK (Intermediate) (I4). Compiled by N. Bharadwaj, Y. Feng, I. Lindenmaier, D. Nelson, B. Isom, J. Hardin, A. Matthews, T. Wendler, V. Castro and M. Rocque. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1971316.