1B-CPR

CloudSat Product Stats - Algorithm Developer Edition
Product Availability: Full mission availability except for anomalies and maneuver data gaps.
1B-CPR measures the backscattered power as a function of distance from the radar. The backscattered power is sampled every ~240 m; there are 125 range bins, for a total window of 30 km. The raw, Level 0 data is converted to calibrated Level 1B data using pre-launch and in-flight calibration measurements.
 

Primary Publication

Process Description and Interface Control Document (PDICD)

File Name Last Modified
1B-CPR P_R04 Data Issues (40.23 KB) October 17, 2007
1B-CPR P_R04 PDICD (576.64 KB) June 27, 2007

Algorithm Specifications

Data
Popup Type Dimensions Units Range Missing Miss Op Factor Offset
UINT(1) nray -- 0 to 127 1 0
UINT(1) nray -- 0 to 127 1 0
UINT(1) nray -- 0 to 81 1 0
REAL(4) nscbin,nray W to 1.00E-30 == 1 0
UINT(1) nray -- 1 to 3 1 0
REAL(4) npowers,nray W 1e-015 to 2e-014 -9999 == 1 0
REAL(4) nray m^(-3) 0.01 to 0.1 -9999 == 1 0
REAL(4) <scalar> -- 0 to 5 1 0
REAL(4) <scalar> meters 0.0031879 to 0.0031879 1 0
REAL(4) <scalar> seconds 0.16 to 0.48 -9999 == 1 0
REAL(4) nray mW to 1 0
UINT(1) nray 1.6 microsec 140 to 208 0 == 1 0
INT(2) nray -- 580 to 678 0 == 1 0
UINT(1) nray microsec 3.1 to 3.8 0 == 1 0
UINT(1) nray -- 0 to 3 1 0
REAL(4) nbin,nray W 1e-015 to 1e-006 -9999 == 1 0
INT(2) nray dB*100 -1000 to 4000 -9999 == 1 0
UINT(1) nray -- 90 to 125 255 == 1 0
REAL(4) nray to -99 == 1 0
REAL(4) nray to 99 == 1 0
REAL(4) nray W 1500 to 2000 -9999 == 1 0
REAL(4) <scalar> W 1500 to 2000 -9999 == 1 0
Geolocation
Popup Type Dimensions Units Range Missing Miss Op Factor Offset
INT(2) nray meters -9999 to 8850 9999 == 1 0
REAL(4) nray degrees -90 to 90 1 0
REAL(4) nray degrees -180 to 180 1 0
REAL(4) <scalar> degrees -90 to 90 1 0
REAL(4) nray seconds 0 to 6000 1 0
REAL(4) nray meters 650000 to 740000 -9999 == 1 0
REAL(4) nray km 600 to 800 1 0
REAL(4) <scalar> meters 239.8 to 239.8 -9999 == 1 0
REAL(4) <scalar> degrees -90 to 90 1 0
REAL(8) <scalar> seconds 0 to 6e+008 1 0
REAL(4) <scalar> seconds 0 to 86400 1 0

Related News Articles

2007

R04 Released to General Science Community

August 10, 2007
Release 4 of 1B-CPR, 2B-GEOPROF, and 2B-GEOPROF-LIDAR is now available to the General Science Community via the data ordering system. This release incorporates several improvements for the data products primarily driven by the development of a surface clutter reduction scheme in 1B-CPR. This affects all products by improving cloud detection near the Earth's surface. In addition, the profile overlap at the beginning and end of each granule has been removed. Granules now start with the first profile on or after the equator on a descending pass and end with the last profile before the equator on the next descending pass. Release 4 also includes the first release of the 2B-GEOPROF-LIDAR product.
 
This annoucement to the General Science Community applies to the 1B-CPR, 2B-GEOPROF, and 2B-GEOPROF-LIDAR products only. The new release of MODIS-AUX, ECMWF-AUX, and 2B-CLDCLASS is still only available to the CloudSat Science Team.
 
All data users are asked to review the known issues page, on-line product specifications, and the summary of changes. If you have any questions concerning the ordering process, contact the DPC.

R04 available to the Science Team

July 19, 2007
Release 4 is now available to the CloudSat Science Team via the data ordering system. This release incorporates several improvements for the data products primarily driven by the development of a surface clutter reduction scheme in 1B-CPR. This affects all products by improving cloud detection near the Earth's surface. In addition, the profile overlap at the beginning and end of each granule has been removed. Granules now start with the first profile on or after the equator on a descending pass and end with the last profile before the equator on the next descending pass. Release 4 also includes the first release of the 2B-GEOPROF-LIDAR product.
 
This annoucement applies to the 1B-CPR, MODIS-AUX, ECMWF-AUX, 2B-GEOPROF, and 2B-GEOPROF-LIDAR products.
 
All data users are asked to review the known issues page, on-line product specifications, and the summary of changes. If you have any questions concerning the ordering process, contact the DPC.