CALIPSO Quality StatementsMost Recent Product Releases: |
RELEASE 3. The primary contents of the CALIOP Level 1 product are calibrated profiles of 532 nm perpendicular attenuated backscatter and total attenuated backscatter at 532 nm and 1064nm. The CALIOP Level 1 data are released with a product maturity classification of Validated Stage 1. For this stage, all obvious errors have been identified and corrected, and intercomparisons of attenuated backscatter products have been performed at selected locations and times.
RELEASE 2. The second release of the CALIPSO data are comprised of Level 1 and 2 data from the CALIOP and IIR instruments. Release 2 included initial releases for the Level 2 CALIOP Cloud Profile and Aerosol Profile products and IIR Swath products. Validation of these products is very limited, and the majority of the data products should not be considered to be validated. Release 2 is considered to be a provisional release for the Level 1 data products, in the sense that while all obvious errors have been identified and corrected, only a limited set of intercomparisons have been performed. Various parameters are more or less reliable (explained in some detail in the data quality summaries), but the responsibility is on the user to determine if the data quality is sufficient for his/her purposes.
The Cloud and Aerosol Profile Products were released as Beta products. The primary contents are profiles of cloud and aerosol extinction and backscatter profiles at a horizontal resolution of 5 km (cloud profiles) and 40 km (aerosol profiles). The products contain known errors and invalid data and, in their current form, are not standalone products. The current products contain no data quality information and must be used in conjunction with the Cloud and Aerosol Layer Product and/or Vertical Feature Mask, which contain data quality parameters and confidence flags. Data assessment and screening procedures have not yet been developed. Because of this, the data products are considered to be not appropriate for scientific publication, but are released to users for evaluation and to provide feedback to the CALIOP algorithm development team. Users should carefully read the section of the Data Quality Summaries related to extinction retrievals. QA and validation are ongoing and data quality information will be included with future releases.
RELEASE 1. The initial release of CALIPSO data was comprised of Level 1 data from all three instruments (CALIOP, IIR, and WFC) and a limited set of CALIOP Level 2 Cloud and Aerosol Layer products. Validation of these data is very limited, and the majority of the data products should not be considered to be validated.
Uncertainties for specific parameters are reported in the individual quality statements. Quality designators indicate the maturity of products and individual parameters, and include "Beta", "Provisional", " Validated Stage 1", "Validated Stage 2", and "Validated Stage 3". A product may contain parameters at varying quality levels.
Beta: | Early release products for users to gain familiarity with data formats and
parameters. Users are strongly cautioned against the indiscriminate use of these data products as the basis for research findings, journal publications, and/or presentations. |
Provisional: | Limited comparisons with independent sources have been made and obvious artifacts fixed. |
Validated Stage 1: | Uncertainties are estimated from independent measurements at selected locations and times. |
Validated Stage 2: | Uncertainties are estimated from more widely distributed independent measurements. |
Validated Stage 3: | Uncertainties are estimated from independent measurements representing global conditions. |
CALIPSO Products are divided into nine groups:
A Data Quality Statement for each CALIPSO Product is listed in the Product Specific Quality Statements. Also listed in Product Specific Quality Statements are links to more detailed Data Quality Statements for current and past versions of the CALIPSO products. Please be aware that products generated in the past by older software versions may be of different quality than current products. It is important, therefore, to note that dates on quality statements correspond to the date when the CALIPSO product was released, not to the date when the raw data was acquired by the CALIPSO instrument. |
IIR Level 1B Radiances Half orbit (Night and Day) geolocated, calibrated radiances |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
November 6, 2008 | 1.11 | August 20, 2008 to present | 1.11 Summary | In Preparation | Provisional |
December 8, 2006 | 1.10 | June 13, 2006 to August 19, 2008 | 1.10 Summary | In Preparation | Provisional |
Lidar Level 1B Profiles Half orbit (Night and Day) geolocated, calibrated Lidar Profiles and Viewing Geometry Products |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
June 2009 | 3.00 | March 12, 2009 - June 10, 2009 | 3.00 Summary | QS 3.00 | Validated Stage 1 |
October 2008 | 2.02 | September 14, 2008 to February 16, 2009 | 2.02 Summary | QS 2.01, 2.02 | Provisional |
December 2007 | 2.01 | June 13, 2006 to September 13, 2008 | 2.01 Summary | Provisional | |
August 12, 2007 | 1.22 | August 12, 2007 to November 11, 2007 | 1.22 Summary | QS 1.22, 1.20, 1.11, 1.10 | Provisional |
March 1, 2007 | 1.20 | March 1, 2007 to August 11, 2007 | 1.20 Summary | Provisional | |
January 6, 2007 | 1.11 | January 6, 2007 to February 28, 2007 | 1.11 Summary | Provisional | |
December 8, 2006 | 1.10 | June 6, 2006 to January 5, 2007 | 1.10 Summary | Provisional |
Lidar Level 2 Vertical Feature Mask Half orbit (Night and Day) scene classification data and lidar lighting and land/water indicators |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
October 2008 | 2.02 | September 14, 2008 to present | 2.02 Summary | QS 2.01, 2.02 | Provisional |
January 2008 | 2.01 | June 13, 2006 to September 13, 2008 | 2.01 Summary | Provisional | |
December 8, 2006 | 1.10 | June 13, 2006 to November 11, 2007 | 1.10 Summary | QS 1.10 |
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Lidar
Level 2 Cloud and Aerosol Layer Information Half orbit (Night and Day) lidar cloud and aerosol layer products describe both column and layer properties |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
October 2008 | 2.02 | September 14, 2008 to present | 2.02 Summary | QS 2.01, 2.02 | Provisional |
January 2008 | 2.01 | June 13, 2006 to September 13, 2008 | 2.01 Summary | Provisional | |
December 8, 2006 | 1.10 | June 13, 2006 to November 11, 2007 | 1.10 Summary | QS 1.10 |
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Lidar Level 2 Aerosol Profile Half orbit (Night and Day) averaged aerosol profile data and ancillary data |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
October 2008 | 2.02 | September 14, 2008 to present | 2.02 Summary | QS 2.01, 2.02 | Beta |
January 2008 | 2.01 | June 13, 2006 to September 13, 2008 | 2.01 Summary | Beta |
Lidar Level 2 Cloud Profile Half orbit (Night and Day) averaged cloud profile data and ancillary data |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
October 2008 | 2.02 | September 14, 2008 to present | 2.02 Summary | QS 2.01, 2.02 | Beta |
January 2008 | 2.01 | June 13, 2006 to September 13, 2008 | 2.01 Summary | Beta |
Wide Field Camera (WFC) Level 1B Scans Information Half orbit (Day) geolocated data radiances |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
December 8, 2006 | 1.10 | June 13, 2006 to present | 1.10 Summary | QS 1.10 | Provisional |
IIR Level 2 Track Data Half orbit (Night and Day) emissivity and cloud particle data related to pixels that have been co-located to the Lidar track |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
October 2008 | 2.02 | September 14, 2008 to present | 2.02 Summary | In Preparation | Provisional |
October 2008 | 2.01 | June 13, 2006 to December 31, 2006 February 18, 2008 to September 13, 2008 |
2.01 Summary | In Preparation | Beta |
IIR Level 2 Swath Data Half orbit (Night and Day) emissivity and cloud particle data assigned to IIR pixels on a 1 km grid centered on the Lidar track |
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Release Date | Version | Data Date Range | Product Quality Statement |
Data Detail Quality Statement |
Maturity Level |
October 2008 | 2.02 | September 14, 2008 to present | 2.02 Summary | In Preparation | Provisional |
October 2008 | 2.01 | June 13, 2006 to December 31, 2006 February 18, 2008 to September 13, 2008 |
2.01 Summary | In Preparation | Beta |
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