NUCAPS: NOAA Unique Combined Atmospheric Processing System Cloud-Cleared Radiances (CCR)
NUCAPS-CCR-NDE
NUCAPS MW Emissivity at Channel 1 (23.8V) Descending on March 14, 2017. Credit: JPSS EDR LTM System.
This dataset consists of Cloud-Cleared Radiances (CCRs) from the NOAA Unique Combined Atmospheric Processing System (NUCAPS). NUCAPS was developed by the NOAA/NESDIS Center for Satellite Application and Research (STAR) and is produced operationally at the NOAA/NESDIS Office of Satellite and Product Operations (OSPO). Cloud clearing is the process of computing the clear column radiance for each Cross-track Infrared Sounder (CrIS) channel. The CrIS sensor onboard the Suomi National Polar-orbiting Partnership (S-NPP) satellite is a Fourier transform spectrometer with a total of 1,305 spectral channels covering the longwave IR (9.14 - 15.38 um), midwave IR (5.71 - 8.26 um) and shortwave IR (3.92 - 4.64 um) wavelengths. CrIS scans at a 2200 km swath width, with each scan containing 30 Fields of Regard (FORs) viewed on the Earth's surface. Each FOR contains 9 Fields of View (FOVs) simultaneously measured as a 3 x 3 array. The circular FOVs have a diameter of 14 km at nadir. NUCAPS produces CCRs from the CrIS FORs that are co-located with the Advanced Technology Microwave Sounder (ATMS) also onboard the S-NPP satellite. The full spectrum CCRs are produced along with the standard NUCAPS Environmental Data Record (EDR) products, as the radiances are used to retrieve the EDR products. Each product file encompasses one 32-second granule of data, corresponding to 4 scan lines of CrIS/ATMS data. The products are distributed in netCDF-4 file format with metadata attributes included.
- Cite as: Liu, Quanhua, Wolf, Walter, Reale, Tony, Sharma, Awdhesh, and NOAA JPSS Program Office (2014). NUCAPS: NOAA Unique Combined Atmospheric Processing System Cloud-Cleared Radiances (CCR). [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5WM1BG5. [access date].
Download Data |
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NOAA CLASS FTP Server (download)
Access and download data tar files by date and product for the previous 85 days. The directory structure is as follows, date(yyyymmdd)->instrument family->product.
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Order Data |
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Distribution Formats |
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Ordering Instructions |
Contact NCEI for other distribution options and instructions. |
Distributor |
NOAA National Centers for Environmental Information ncei.info@noaa.gov
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Dataset Point of Contact |
Customer Engagement Branch DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 828-271-4800 class.help@noaa.gov
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Coverage Description |
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Time Period |
2014-04-07 to Present |
Spatial Bounding Box Coordinates |
West: -180.0
East: 180.0
South: -90.0
North: 90.0
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Spatial Coverage Map |
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General Documentation |
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Processing Documents |
- JPSS STAR Science Documents
- JPSS STAR Algorithm Maturity Matrix
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Associated Resources |
- NUCAPS: NOAA Unique Combined Atmospheric Processing System Environmental Data Record (EDR) Products
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Publication Dates |
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Edition |
Version 1.0 |
Data Presentation Form |
Digital image
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Dataset Progress Status |
Ongoing - data is continually being updated |
Data Update Frequency |
Continual |
Purpose |
This dataset provides high quality measurements of cloud-cleared radiances from CrIS and ATMS. |
Use Limitations |
- For a complete description of use limitations for this dataset, refer to the Algorithm Theoretical Basis Document.
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Dataset Citation |
- Cite as: Liu, Quanhua, Wolf, Walter, Reale, Tony, Sharma, Awdhesh, and NOAA JPSS Program Office (2014). NUCAPS: NOAA Unique Combined Atmospheric Processing System Cloud-Cleared Radiances (CCR). [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5WM1BG5. [access date].
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Cited Authors |
- Liu, Quanhua
DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
- Wolf, Walter
DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
- Reale, Tony
DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
- Sharma, Awdhesh
DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
- NOAA JPSS Program Office
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Originators |
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Principal Investigators |
- Liu, Quanhua
DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
- Wolf, Walter
DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
- Reale, Tony
DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
- Sharma, Awdhesh
DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
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Publishers |
- NOAA National Centers for Environmental Information
- DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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Theme keywords |
Global Change Master Directory (GCMD) Science Keywords- Earth Science > Spectral/Engineering > Infrared Wavelength > Infrared Radiances
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Data Center keywords |
Global Change Master Directory (GCMD) Data Center Keywords
- DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
- DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
- DOC/NOAA/NESDIS/OSPO > Office of Satellite and Product Operations, NESDIS, NOAA, U.S. Department of Commerce
- DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
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Platform keywords |
Global Change Master Directory (GCMD) Platform Keywords- SUOMI-NPP > Suomi National Polar-orbiting Partnership
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Instrument keywords |
Global Change Master Directory (GCMD) Instrument Keywords
- CrIS > Cross-track Infrared Sounder
- ATMS > Advanced Technology Microwave Sounder
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Place keywords |
Global Change Master Directory (GCMD) Location Keywords- Geographic Region > Global
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Project keywords |
Global Change Master Directory (GCMD) Project Keywords
- JPSS > Joint Polar Satellite System
- NOAA OneStop Project
- NDE > NESDIS Data Exploitation
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Use Constraints |
- Cite as: Liu, Quanhua, Wolf, Walter, Reale, Tony, Sharma, Awdhesh, and NOAA JPSS Program Office (2014). NUCAPS: NOAA Unique Combined Atmospheric Processing System Cloud-Cleared Radiances (CCR). [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.7289/V5WM1BG5. [access date].
- Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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Access Constraints |
- Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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Fees |
- In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
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Lineage information for: dataset |
Lineage Statement |
These data were produced by the NOAA JPSS Program Office at the Office of Satellite and product Operations (OSPO) and are archived at the NOAA National Centers for Environmental Information (NCEI). |
Processor |
- DOC/NOAA/NESDIS/STAR > Center for Satellite Applications and Research, NESDIS, NOAA, U.S. Department of Commerce
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Processing Steps |
- For a complete description of the processing steps, see the Algorithm Theoretical Basis Document and Data Flow Diagram.
- 2012-08-08T00:00:00Z - The S-NPP NUCAPS CCR product algorithm reached Beta maturity status.
- 2013-01-18T00:00:00Z - The S-NPP NUCAPS CCR product algorithm reached Provisional maturity status.
- 2014-09-03T00:00:00Z - The S-NPP NUCAPS CCR algorithm reached Validated maturity status.
- 2018-06-15T00:00:00Z - The NOAA-20 NUCAPS CCR algorithm reached Beta maturity status.
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Processing Documents |
- JPSS STAR Science Documents
- JPSS STAR Algorithm Maturity Matrix
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Source Datasets |
- NOAA JPSS Cross-track Infrared Sounder (CrIS) Science Sensor Data Record (SDR) from IDPS
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Landing page for JPSS-CrIS-SDR
Source dataset landing page with general information and access links for the dataset.
- Description of Source: Sensor Data Record (SDR)
- Temporal extent used: 2012-04-19 to Present
- Spatial extent used: N:90 S:-90 E:180 W:-180
- NOAA JPSS Advanced Technology Microwave Sounder Sensor (ATMS) Sensor Data Record (SDR) from IDPS
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NCEI landing page for JPSS-ATMS-SDR
Source dataset landing page with general information and access links for the dataset.
- Description of Source: Sensor Data Record (SDR)
- Temporal extent used: 2012-04-19 to Present
- Spatial extent used: N:90 S:-90 E:180 W:-180
- NOAA JPSS Advanced Technology Microwave Sounder (ATMS) Temperature Data Record (TDR) from IDPS
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NCEI landing page for JPSS-ATMS-TDR
Source dataset landing page with general information and access links for the dataset.
- Description of Source: Temperature Data Record (TDR)
- Temporal extent used: 2011-12-10 to Present
- Spatial extent used: N:90 S:-90 E:180 W:-180
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Lineage information for: repository |
Processing Steps |
- 2015-04-22T00:00:00 - NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.
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Last Modified: 2023-06-23
For questions about the information on this page, please email:
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