xsaprcfr

The 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.

North Slope Alaska - Central Facility, Barrow AK

• Latitude: 71.323
• Longitude: -156.615
• Publication Date: 2023-05-30
• Start Date: 2023-05-30
• End Date: 2024-04-29
• Last Updated: 2024-04-30

https://www.arm.gov/connect-with-arm/organization/instrument-mentors/list#xsapr

Ya-Chien Feng

Pacific Northwest National Laboratory

https://doi.org/10.5439/1463663
Atmospheric Radiation Measurement (ARM) user facility. 2023. X-Band Scanning ARM Precipitation Radar (XSAPRCFR). 2023-05-30 to 2024-04-29, North Slope Alaska (NSA) Central Facility, Barrow AK (C1). Compiled by N. Bharadwaj, J. Hardin, B. Isom, K. Johnson, I. Lindenmaier, A. Matthews, D. Nelson, Y. Feng, T. Wendler, M. Rocque and V. Castro. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1463663.