NOAA Climate Data Record (CDR) of AVHRR Polar Pathfinder Extended (APP-X) Cryosphere, Version 1 (Version Superseded)
Extended AVHRR Polar Pathfinder (APP-x)
*Note: This dataset version has been superseded by a newer version. It is highly recommended that users access the current version. Users should only use this version for special cases, such as reproducing studies that used this version.* NOAA Climate Data Record (CDR) of the extended AVHRR Polar Pathfinder (APP-x) cryosphere contains 19 geophysical variables over the Arctic and Antarctic for the period 1982 - present. All of them have undergone various degrees of validation, though not all are considered CDR quality. The variables are (those considered by the developers to be CDR-quality are identified with an asterisk): Surface temperature, all-sky, snow, ice, and land* Surface albedo, all-sky* Sea ice thickness* Surface type Cloud mask* Cloud particle thermodynamic phase Cloud optical depth Cloud particle effective radius Cloud temperature Cloud pressure Cloud type Downwelling shortwave radiation at the surface* Downwelling longwave radiation at the surface* Upwelling shortwave radiation at the surface* Upwelling longwave radiation at the surface* Upwelling shortwave radiation at the TOA* Upwelling longwave radiation at the TOA* Shortwave cloud radiative forcing at the surface Longwave cloud radiative forcing at the surface APP-x data products are mapped to a 25 km EASE grid at two local solar times: 04:00 and 14:00 for the Arctic, and 02:00 and 14:00 for the Antarctica. Using local solar time rather than standard UTC times provides better information on diurnal differences at all locations.
- Cite as: Key, Jeffrey; Wang, Xuanji; Liu, Yinghui; and NOAA CDR Program (2014). NOAA Climate Data Record of AVHRR Polar Pathfinder Extended (APP-X), Version 1. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5MK69W6 [access date].
- doi:10.7289/V5MK69W6
- NCEI DSI 3710_01
- gov.noaa.ncdc:C00941
C00941
Distribution Formats |
|
Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA Climate Data Record Program Office
DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce +1 (828) 271-4800 app_contacts@noaa.gov |
Coverage Description | |
Time Period | 1982 to 2019 (time interval: 12-hour) |
Spatial Bounding Box Coordinates |
N: 90.0
S: -90.0
E: 180.0
W: -180.0
|
Spatial Coverage Map |
General Documentation |
|
Processing Documents |
|
Associated Resources |
|
Publication Dates |
|
Edition | Version 1.0 |
Data Presentation Form | Digital image
|
Dataset Progress Status | Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility Superseded - replaced by new |
Data Update Frequency | Not planned |
Purpose | This dataset provides a high quality Climate Data Record (CDR) for use in polar climate studies, climate monitoring, and model verification. |
Use Limitations |
|
Dataset Citation |
|
Cited Authors |
|
Originators |
|
Collaborators |
|
Publishers |
|
Theme keywords | Global Change Master Directory (GCMD) Science Keywords
|
Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
|
Platform keywords | Global Change Master Directory (GCMD) Platform Keywords
|
Instrument keywords | Global Change Master Directory (GCMD) Instrument Keywords
|
Place keywords | Global Change Master Directory (GCMD) Location Keywords
|
Project keywords | Global Change Master Directory (GCMD) Project Keywords
|
Data Resolution keywords | Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
|
Stratum keywords | Global Change Master Directory (GCMD) Location Keywords
|
Use Constraints |
|
Access Constraints |
|
Fees |
|
Lineage Statement | This Climate Data Record (CDR) were produced by NOAA Center for Satellite Applications and Research (STAR) and University of Wisconsin and are archived at the NOAA National Climatic Data Center (NCDC). |
Processor |
|
Processing Steps |
|
Processing Documents |
|
Source Datasets |
|
Processing Steps |
|
Last Modified: 2023-09-19
For questions about the information on this page, please email: ncei.info@noaa.gov