2B-CLDCLASS

CloudSat Product Stats - Algorithm Developer Edition
Product Availability: Full mission availability except for anomalies and maneuver data gaps.
Classifying cloud type is an important task for global cloud climatology studies. Different types of clouds are governed by different cloud dynamical processes and have different microphysical properties, which can result in quite different cloud radiative forcings. Because cloud type corresponds to specific cloud physical properties, cloud classification is also needed to apply other algorithms to derive quantitative cloud content and radiative data. 2B-CLDCLASS classifies clouds into either stratus (St), stratus (Sc), cumulus (Cu, including cumulus congestus), nimbostratus (Ns), altocumulus (Ac), altostratus (As), deep convective (cumulonimbus), or high (cirrus and cirrostratus) clouds, based on different rules for hydrometeor vertical and horizontal scales, the maximum Ze measured by the CPR, indications of precipitation, and ancillary data including ECMWF predicted temperature profiles and surface topography height.
 

Primary Publication

Process Description and Interface Control Document (PDICD)

File Name Last Modified
2B-CLDCLASS P_R04 PDICD (1.3 MB) July 24, 2007

Algorithm Specifications

Data
Popup Type Dimensions Units Range Missing Miss Op Factor Offset
INT(2) nbin,nray none 0 to 32767 1 0
UINT(1) nray -- 0 to 127 1 0
UINT(1) nray -- 0 to 127 1 0
UINT(1) nray -- 0 to 81 1 0
Geolocation
Popup Type Dimensions Units Range Missing Miss Op Factor Offset
INT(2) nray meters -9999 to 8850 9999 == 1 0
INT(2) nbin,nray m -5000 to 30000 -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 km 600 to 800 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
REAL(4) <scalar> m to -9999 == 1 0

Related News Articles

2016

CloudSat releases algorithm uncertainty study

September 1, 2016
The CloudSat algorithm development leads have completed a synthesis of algorithm uncertainties. The synopsis describes the known uncertainties in the Cloudsat algorithms and provides the relevant technical and peer reviewed references for data end-users. The algorithm development team plans to update the document periodically as new data releases become available.

2007

R04 of ECMWF-AUX, MODIS-AUX, & 2B-CLDCLASS released to General Science Community

September 17, 2007
Release 4 of ECMWF-AUX, MODIS-AUX, and 2B-CLDCLASS is now available to the General Science Community via the data ordering system.
 
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 2B-CLDCLASS Released to Science Team

August 1, 2007
Release 4 of the 2B-CLDCLASS product was released to the Science Team today.
 
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.