S-PolKa Parameters

S-PolKa RICO, Codrington, Barbuda
Nov 2004 - Jan 2005



Within the reprocessed data set:

The re-configured S-Pol system is sometimes referred to as S-PolKa, an indication of the Ka-band system added to the radar. Several data sets were produced from S-Pol raw data, depending upon the various desires of the PIs.

The following data sets were produced:

For RICO, the Ka band performed simultaneous H and V transmit, with separate recievers for the H and V return power.

S-band is 2809 MHz, 10.68 cm
Ka-band is approx 8.6 mm
Present In: Parameter
9var 11var fullvar Name Units Description
Sonly SandK Sonly SandK
X X CDBZ dBZ S-band coherent reflectivity
X X X X X DBZ dBZ S-band reflectivity
X X DL dBm S-band Vertical received power (co-polar: V-tx, V-rec)
X X X X X DM dBm S-band Horizontal received power (co-polar: H-tx, H-rec)
DW dBm S-band cross-polar received power (V-tx, H-rec or HV)
X X X DX dBm S-band cross-polar received power (H-tx, V-rec or VH)
X X DY dBZ S-band co-polar reflectivity (V-tx, V-rec or VV)
X X X LDR dB S-band depolarization ratio (H-tx, V-rec, or VH)
X X LVDR dB S-band depolarization ratio (V-tx, H-rec, or HV)
LDR_VH_K dB Ka-band depolarization ratio (H-tx, V-rec, or VH) (N/A RICO)
(special note: H-polarization for Ka is often tipped up to 22 degrees off of horizontal in LDR mode)
X X X X X NCP none S-band normalized coherent power (HH)
X NCP_HH_K none Ka-band normalized coherent power (HH)
X X X PHIDP deg S-band differential phase
X X P_HH_K dBm Ka-band co-polar received power (H-tx, H-rec or HH)
X X P_VV_K dBm Ka-band co-polar received power (V-tx, V-rec)
X X RHOHV none S-band Correlation coefficient between HH, VV
X RHO_VH_K none Ka-band Correlation coefficient between HH, VV
X X X X X SW m/s S-band co-polar spectrum width (computed from both SW_HH and SW_VV)
X SW_HH_K m/s Ka-band co-polar spectrum width (HH)
X TH_VH_K deg Ka-band differential phase (PHIDP of Ka) (not yet evaluated for utility)
X X X X X VR m/s S-band co-polar radial velocity (computed from both V_HH and V_VV using the CSU algorithms)
X X V_HH_K m/s Ka-band co-polar radial velocity (HH)
X X X X X ZDR dB S-band differential reflectivity (DBZ_HH - DBZ_VV)
X X ZDR_VH_K dB Ka-band differential reflectivity (DBZ_HH - DBZ_VV)
ZG0_HH_K dBZ Ka-band co-polar HH reflectivity, corrected using gate-zero transmit power.
X X Z_HH_K dB Ka-band co-polar reflectivity (HH)
NIQ dB Average magnitude of backscatter pwr (HH)
AIQ deg Average phase of backscattered power (HH)
AIQ is used in the Fabry refractive index work for the determination of virtual temp
CH none Magnitude of cross correlation, HH and VH
AH deg Angle of the cross correlation, HH and VH
CV none Magnitude of cross correlation, VV and HV
AV deg Angle of the cross correlation, VV and HV
KDP deg/km [Not Available] Specific diff propagation phase (HH, VV)
Note: the complement of possible parameters will vary by project and processor code version.

--- Bob Rilling --- / NCAR Earth Observing Laboratory
Created: Mon Feb 6 11:18:05 MST 2006
Last modified: