Caltrack Products

Type of products

The caltrack products contain the coincidences issued of many sensors under the CALIOP subtrack for 2 resolutions :

  • 333m : they are based on the reference CALIOP L1 subtrack. They are also called caltrack_l1 products
  • 5km : they are based on the reference CALIOP L2 5km subtrack. They are also called caltrack_l2 products

For each product, one file per target sensor is constructed. They are called caltrack unit files

Naming convention

caltrack_level_productid_calipso-orbit-timestamp.hdf

level Level of the CALIOP reference substrack. One of
  • l1 : reference is the CALIOP L1 track
  • l2 : reference is the CALIOP L2 5km track
productid Target Product Identification. One of
MODIS-MYD021KM, PARASOL-L1, CLOUDSAT-1B-CPR,
CALIOP-05KMALAY, IIR-L2,
PARASOL-LS2, PARASOL-OC2, PARASOL-RB2,
CLOUDSAT-2B-GEOPROF, CLOUDSAT-2B-CLDCLASS,
MODIS-MYD04-L2, MODIS-MYD05-L2, MODIS-MYD06-L2
calipso-orbit-timestamp The timestamp of the CALIPSO source half orbit, using its standard format yyyy-mm-ddThh-mm-ssZ[DN]

Examples

Reference Subtrack CALIPSO half orbit start time Product Unit File
CALIOP L1
( aka caltrack_l1 files )
Mar. 01 2007 at 00:55:42
(day half orbit)
PARASOL L1B caltrack_l1_PARASOL-L1_2007-03-01T00-55-42ZD.hdf
MODIS MYD021KM caltrack_l1_MODIS-MYD021KM_2007-03-01T00-55-42ZD.hdf
Mar. 01 2007 at 01:48:12
(night half orbit)
PARASOL L1B No PARASOL file on night side
MODIS MYD021KM caltrack_l1_MODIS-MYD021KM_2007-03-01T01-48-12ZN.hdf
CALIOP 05kmCLay
( aka caltrack_l2 files )
Mar. 01 2007 at 00:55:42
(day half orbit)
CALIPSO IIR L2 Track caltrack_l2_IIR-L2_2007-03-01T00-55-42ZD.hdf
PARASOL LS2 caltrack_l2_PARASOL-LS2_2007-03-01T00-55-42ZD.hdf
PARASOL OC2 caltrack_l2_PARASOL-OC2_2007-03-01T00-55-42ZD.hdf
PARASOL RB2 caltrack_l2_PARASOL-RB2_2007-03-01T00-55-42ZD.hdf
MODIS MYD04 caltrack_l2_MODIS-MYD04-L2_2007-03-01T00-55-42ZD.hdf
MODIS MYD05 caltrack_l2_MODIS-MYD05-L2_2007-03-01T00-55-42ZD.hdf
MODIS MYD06 caltrack_l2_MODIS-MYD06-L2_2007-03-01T00-55-42ZD.hdf
CLOUDSAT 2B-GEOPROF caltrack_l2_CLOUDSAT-2B-GEOPROF_2007-03-01T00-55-42ZD.hdf
CLOUDSAT 2B-CLDCLASS caltrack_l2_CLOUDSAT-2B-CLDCLASS_2007-03-01T00-55-42ZD.hdf
OMI CLDO2 caltrack_l2_OMI_CLDO2_2007-03-01T00-55-42ZD.hdf
OMI NO2 caltrack_l2_OMI_NO2_2007-03-01T00-55-42ZD.hdf
OMI CLDRR caltrack_l2_OMI_CLDRR_2007-03-01T00-55-42ZD.hdf
Mar. 01 2007 at 01:48:12
(night half orbit)
PARASOL LS2 No PARASOL file on night side
PARASOL OC2
PARASOL RB2
MODIS MYD04 caltrack_l2_MODIS-MYD04-L2_2007-03-01T01-48-12ZN.hdf
MODIS MYD05 caltrack_l2_MODIS-MYD05-L2_2007-03-01T01-48-12ZN.hdf
MODIS MYD06 caltrack_l2_MODIS-MYD06-L2_2007-03-01T01-48-12ZN.hdf
CLOUDSAT 2B-GEOPROF caltrack_l2_CLOUDSAT-2B-GEOPROF_2007-03-01T01-48-12ZN.hdf
CLOUDSAT 2B-CLDCLASS caltrack_l2_CLOUDSAT-2B-CLDCLASS_2007-03-01T01-48-12ZN.hdf
OMI CLDO2 No OMI file on night side
OMI NO2
OMI CLDRR

Data Access [Registration Required]

Registration

For accessing those data, you need to have a valid ftp account and the right to access caltrack data. If you do not have one or want to upgrade your account with an access to caltrack data, please fill the "FTP Access Registration" form that can be found here

Data

The data can be accessed via the data archive browser