NOAA Climate Data Record (CDR) of Cloud and Clear-Sky Radiation Properties, Version 1.0
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dateStamp: 2023-06-23
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title: NOAA Climate Data Record (CDR) of Cloud and Clear-Sky Radiation Properties, Version 1.0
alternateTitle: AVHRR Cloud Properties - NASA
date: (CI_Date)
date: 2015-03-01
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edition: Version 1.0
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Anchor: DOI doi:10.7289/V5HT2M8T
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code: NCEI DSI 2005_01
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code: gov.noaa.ncdc:C00876
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organisationName: NOAA National Centers for Environmental Information
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organisationName: DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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voice: 1-828-271-4800
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deliveryPoint: 151 Patton Avenue
deliveryPoint: Veach-Baley Federal Building, Room 468
city: Asheville
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hoursOfService: 8:00 - 6:00 Eastern
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individualName: Minnis, Patrick
organisationName: Science Directorate, NASA Langley Research Center
positionName: Senior Scientist
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individualName: Minnis, Patrick
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individualName: Bedka, Kristopher
organisationName: Science Directorate, NASA Langley Research Center
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individualName: Bedka, Kristopher
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organisationName: NOAA CDR Program
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electronicMailAddress: cdr-ipt-cloud_bundle@noaa.gov
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abstract: The NASA LaRC cloud and clear sky radiation properties dataset is generated using algorithms initially developed for application to TRMM and MODIS imagery within the NASA CERES program. The algorithms have been adapted to operate upon AVHRR, an instrument that has fewer spectral channels than MODIS. This dataset utilizes calibrated AVHRR reflectances from a companion FCDR. Cloud and clear-sky radiation properties are derived globally at the 4 km Global Area Coverage pixel scale during both day and night using this approach. CDR quality variables include: Cloud and clear sky pixel detection (count), Cloud top thermodynamic phase (count), Cloud optical depth (count), Cloud particle effective radius (micrometers), Air pressure at effective cloud top (hPa), Air temperature at effective cloud top (K), and Height at effective cloud top (km). Other Non-CDR Quality Variables include: Air pressure at cloud top (hPa), Air temperature at cloud top (K), Height at cloud top (km), Height at cloud base (km), Air pressure at cloud base (hPa), Overshooting cloud top detection mask (count), Land and sea surface temperature retrieval (K), Shortwave broadband albedo (unit less), Longwave broadband flux (W/m2), Snow and ice cover flag (count), Land and sea surface temperature retrieval quality flag (count), Clear sky pixel classification (count), Cloudy pixel classification (count)
purpose: The dataset is intended to identify global cloud cover and cloud macro- and microphysical properties throughout the entire AVHRR data record which extends from 1978 to the present. This CDR provides data at the highest spatial resolution of any existing cloud climatology. We address AVHRR sensor noise and errant navigation in a robust manner. AVHRR shortwave channel calibration is referenced to Aqua MODIS and is the highest quality of any AVHRR-based cloud climatology. Daytime and night-time cloud properties are provided which offers advantages over many other climatologies that are daytime-only. Nearly all the CDR products have been validated using NASA A-Train observations which has not been done for many of the other global climatologies. Possible uses for this data include tracking temporal trends in global cloud cover and properties, such as the energy industry determining cloud frequency for determining appropriate use of alternative energy solutions.
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keyword: Earth Science > Atmosphere > Clouds > Cloud Microphysics
keyword: Earth Science > Atmosphere > Clouds > Cloud Properties
keyword: Earth Science > Atmosphere > Clouds > Cloud Types
keyword: Earth Science > Atmosphere > Clouds > Convective Clouds/Systems (observed/Analyzed)
keyword: Earth Science > Atmosphere > Clouds > Stratospheric Clouds (observed/Analyzed)
keyword: Earth Science > Atmosphere > Clouds > Tropospheric/High-Level Clouds (observed/Analyzed)
keyword: Earth Science > Atmosphere > Clouds > Tropospheric/Low Level Clouds (observed/Analyzed)
keyword: Earth Science > Atmosphere > Clouds > Tropospheric/Mid-Level Clouds (observed/Analyzed)
keyword: Earth Science > Atmosphere > Atmospheric Radiation > Longwave Radiation
keyword: Earth Science > Atmosphere > Atmospheric Radiation > Optical Depth/Thickness
keyword: Earth Science > Atmosphere > Atmospheric Radiation > Outgoing Longwave Radiation
keyword: Earth Science > Atmosphere > Atmospheric Temperature > Surface Temperature > Skin Temperature
keyword: Earth Science > Climate Indicators > Atmospheric/Ocean Indicators > Cloud Indicators
keyword: Earth Science > Atmosphere > Weather Events > Rain Storms
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keyword: AVHRR > Advanced Very High Resolution Radiometer
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keyword: TIROS-N > Television Infrared Observation Satellite-N
keyword: NOAA-6 > National Oceanic & Atmospheric Administration-6
keyword: NOAA-7 > National Oceanic & Atmospheric Administration-7
keyword: NOAA-8 > National Oceanic & Atmospheric Administration-8
keyword: NOAA-9 > National Oceanic & Atmospheric Administration-9
keyword: NOAA-10 > National Oceanic & Atmospheric Administration-10
keyword: NOAA-11 > National Oceanic & Atmospheric Administration-11
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keyword: NOAA-18 > National Oceanic & Atmospheric Administration-18
keyword: NOAA-19 > National Oceanic & Atmospheric Administration-19
keyword: METOP-A > Meteorological Operational Satellite - A
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keyword: 1 km - < 10 km or approximately .01 degree - < .09 degree
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keyword: Hourly - < Daily
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keyword: DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
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useLimitation: See the Algorithm Theoretical Basis Document for a description of the use limitations for this dataset. Cloud pixel detection is CDR quality during both day and night, but is not CDR quality at night over snow/ice covered regions. Cloud optical depth and effective radius is not CDR quality at night or over snow/ice covered regions. There are significant issues with noise in 3.74 um radiances prior to NOAA-15. While efforts have been made to address the noise issue, no method can do this perfectly and this will have an impact on the cloud detection and retrieval results. NOAA-16 and -17, and MetOp-A and -B all switch the Channel 3 data from 3.74 um to 1.61 um during the day. The cloud algorithms must be adjusted to account for this channel switch and this will have an impact on the cloud detection and retrieval results. TIROS-N, NOAA-6, -8, and -10 do not have a 12 um channel. The 12 um channel is quite important at night so we expect that this will have a significant impact on the cloud detection and retrieval results. The term "daytime" above implies a solar zenith angle < 82 deg
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otherConstraints: Cite as: Minnis, Patrick; Bedka, Kristopher; and the NOAA CDR Program (2015): NOAA Climate Data Record (CDR) of Cloud and Clear-Sky Radiation Properties, Version 1.0. [indicate subset used]. NOAA National Centers for Environmental Information. doi:10.789/V5HT2M8T [access date].
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otherConstraints: See the Use Agreement for this CDR available on the CDR page.
resourceConstraints: (MD_LegalConstraints)
accessConstraints: (MD_RestrictionCode) otherRestrictions
otherConstraints: 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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otherConstraints: 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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title: NOAA Climate Data Record (CDR) of Visible and Near Infrared Reflectance from AVHRR, Version 1.0
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description: ground condition
beginPosition: 1978-11-05
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return to top
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TypeName:
aName: int
descriptor: NOAA Climate Data Record of AVHRR 0.86 Micron Channel Reflectance (toa_bidirectional_reflectance)
units: http://example.org/someUnitsDictionary.xml#percent
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: reflectance_161micron
attributeType:
TypeName:
aName: int
descriptor: NOAA Climate Data Record of AVHRR 1.61 Micron Channel Reflectance (toa_bidirectional_reflectance)
units: http://example.org/someUnitsDictionary.xml#percent
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: brightness_temperature_375micron
attributeType:
TypeName:
aName: short
descriptor: AVHRR 3.75 Micron Channel Brightness Temperature (brightness_temperature)
units: http://example.org/someUnitsDictionary.xml#degrees_Kelvin
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: brightness_temperature_108micron
attributeType:
TypeName:
aName: short
descriptor: AVHRR 10.8 Micron Channel Brightness Temperature (brightness_temperature)
units: http://example.org/someUnitsDictionary.xml#degrees_Kelvin
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: brightness_temperature_120micron
attributeType:
TypeName:
aName: short
descriptor: AVHRR 12.0 Micron Channel Brightness Temperature (brightness_temperature)
units: http://example.org/someUnitsDictionary.xml#degrees_Kelvin
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_mask
attributeType:
TypeName:
aName: byte
descriptor: NOAA Climate Data Record of Cloudy and Clear Sky Pixel Detection (cloud_binary_mask)
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_phase
attributeType:
TypeName:
aName: byte
descriptor: NOAA Climate Data Record of Cloud Top Thermodynamic Phase (thermodynamic_phase_of_cloud_water_particles_at_cloud_top)
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: optical_depth
attributeType:
TypeName:
aName: short
descriptor: NOAA Climate Data Record of Cloud Optical Depth (atmosphere_optical_thickness_due_to_cloud)
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: effective_radius
attributeType:
TypeName:
aName: short
descriptor: NOAA Climate Data Record of Particle Effective Radius (effective_radius_of_cloud_liquid_water_particle_at_liquid_water_cloud_top)
units: http://example.org/someUnitsDictionary.xml#microns
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_top_pressure
attributeType:
TypeName:
aName: short
descriptor: Cloud Top Pressure (air_pressure_at_cloud_top)
units: http://example.org/someUnitsDictionary.xml#hPa
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_effective_pressure
attributeType:
TypeName:
aName: short
descriptor: NOAA Climate Data Record of Air Pressure At Effective Cloud Top (air_pressure_at_effective_cloud_top_defined_by_infrared_radiation)
units: http://example.org/someUnitsDictionary.xml#hPa
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_base_pressure
attributeType:
TypeName:
aName: short
descriptor: Cloud Base Pressure (air_pressure_at_cloud_base)
units: http://example.org/someUnitsDictionary.xml#hPa
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_top_height
attributeType:
TypeName:
aName: short
descriptor: Cloud Top Height (cloud_top_altitude)
units: http://example.org/someUnitsDictionary.xml#kilometers
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_effective_height
attributeType:
TypeName:
aName: short
descriptor: NOAA Climate Data Record of Height At Effective Cloud Top (height_at_effective_cloud_top_defined_by_infrared_radiation)
units: http://example.org/someUnitsDictionary.xml#kilometers
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_base_height
attributeType:
TypeName:
aName: short
descriptor: Cloud Base Height (cloud_base_altitude)
units: http://example.org/someUnitsDictionary.xml#kilometers
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_top_temperature
attributeType:
TypeName:
aName: short
descriptor: Cloud Top Temperature (air_temperature_at_cloud_top)
units: http://example.org/someUnitsDictionary.xml#degrees_Kelvin
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_effective_temperature
attributeType:
TypeName:
aName: short
descriptor: NOAA Climate Data Record of Air Temperature At Effective Cloud Top (air_temperature_at_effective_cloud_top_defined_by_infrared_radiation)
units: http://example.org/someUnitsDictionary.xml#degrees_Kelvin
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: overshooting_mask
attributeType:
TypeName:
aName: byte
descriptor: Overshooting Convective Cloud Top Detection Mask
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: pixel_skin_temperature
attributeType:
TypeName:
aName: short
descriptor: Clear Sky Surface Skin Temperature (surface_temperature)
units: http://example.org/someUnitsDictionary.xml#degrees_Kelvin
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: shortwave_broadband_albedo
attributeType:
TypeName:
aName: short
descriptor: Top of Atmosphere Shortwave Broadband Albedo (toa_outgoing_shortwave_flux)
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: longwave_broadband_flux
attributeType:
TypeName:
aName: short
descriptor: Top of Atmosphere Longwave Broadband Flux (toa_outgoing_longwave_flux)
units: http://example.org/someUnitsDictionary.xml#W%20m-2
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: relative_azimuth
attributeType:
TypeName:
aName: short
descriptor: Relative Azimuth Angle (relative_sensor_azimuth_angle)
units: http://example.org/someUnitsDictionary.xml#degrees
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: viewing_zenith
attributeType:
TypeName:
aName: short
descriptor: Viewing Zenith Angle (zenith_angle)
units: http://example.org/someUnitsDictionary.xml#degrees
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: solar_zenith
attributeType:
TypeName:
aName: short
descriptor: Solar Zenith Angle (solar_zenith_angle)
units: http://example.org/someUnitsDictionary.xml#degrees
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: snowice_flag
attributeType:
TypeName:
aName: byte
descriptor: Snow and Ice Cover Analysis or Detection from MERRA and AVHRR
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: pixel_skin_temperature_quality_flag
attributeType:
TypeName:
aName: byte
descriptor: Quality Flag for Pixel Level Skin Temperature Retrieval
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: clear_sky_category
attributeType:
TypeName:
aName: byte
descriptor: Clear Sky Pixel Classification
dimension: (MD_Band)
sequenceIdentifier:
MemberName:
aName: cloud_category
attributeType:
TypeName:
aName: byte
descriptor: Cloudy Pixel Classification
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distributionInfo: (MD_Distribution)
distributor: (MD_Distributor)
distributorContact: (CI_ResponsibleParty)
organisationName: NOAA National Centers for Environmental Information
contactInfo: (CI_Contact)
address: (CI_Address)
electronicMailAddress: ncei.info@noaa.gov
onlineResource: (CI_OnlineResource)
linkage: https://www.ncei.noaa.gov/contact
name: NCEI Contact Information
description: Information for contacts at NCEI.
function: (CI_OnLineFunctionCode) information
role: (CI_RoleCode) distributor
distributionOrderProcess: (MD_StandardOrderProcess)
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.
orderingInstructions: Contact NCEI for other distribution options and instructions.
distributorFormat: (MD_Format)
name: netCDF
version: 4
specification: The NetCDF data files comply with the Climate and Forecast (CF) Metadata Conventions and the NetCDF Attribute Convention for Dataset Discovery (ACDD).
distributorFormat: (MD_Format)
name: netCDF
version: 4
specification: The NetCDF data files comply with the Climate and Forecast (CF) Metadata Conventions and the NetCDF Attribute Convention for Dataset Discovery (ACDD).
distributorTransferOptions: (MD_DigitalTransferOptions)
onLine: (CI_OnlineResource)
linkage: https://doi.org/10.7289/V5HT2M8T
protocol: HTTPS
applicationProfile: Landing Page
name: NCEI Dataset Landing Page
description: Landing page for the dataset.
function: (CI_OnLineFunctionCode) information
distributorTransferOptions: (MD_DigitalTransferOptions)
transferSize: (missing)
onLine: (CI_OnlineResource)
linkage: https://www.ncdc.noaa.gov/has/HAS.FileAppRouter?datasetname=200501&subqueryby=STATION&applname=&outdest=FILE
protocol: HTTPS
applicationProfile: Data Search Application
name: NCEI Archive Information Request System (AIRS)
description: Search the data archive and submit an order for the dataset via the interface.
function: (CI_OnLineFunctionCode) download
distributorTransferOptions: (MD_DigitalTransferOptions)
transferSize: (missing)
onLine: (CI_OnlineResource)
linkage: https://www.ncdc.noaa.gov/cdr/atmospheric/avhrr-cloud-properties-nasa
protocol: HTTPS
applicationProfile: Information
name: AVHRR Cloud Properties - NASA
description: Access to the published CDR, source code, and documentation.
function: (CI_OnLineFunctionCode) download
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) dataset
extent: #boundingExtent
lineage: (LI_Lineage)
statement: The data were produced by the NASA Langley Research Center, and are archived at the NOAA National Centers for Environmental Information (NCEI). The reflectances used in the calculation of these cloud properties are included in the archived file. For more information, please review dataset CATB-D
processStep: (LE_ProcessStep)
description: For a description of the processing steps, see the Algorithm Theoretical Basis Document and Data Flow Diagram for this dataset.
dateTime: (missing)
processor: (CI_ResponsibleParty)
organisationName: NASA Langley Research Center
role: (CI_RoleCode) processor
source: sd001
processingInformation: (LE_Processing)
identifier: (missing)
softwareReference: (CI_Citation)
title: Source Code Package for AVHRR Cloud Properties - NASA
date: (CI_Date)
date: 2015-03-01
dateType: (CI_DateTypeCode) publication
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) publisher
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: (missing)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/AVHRR_Cloud_Properties_NASA/SourceCode_01B-30b.tar.gz
protocol: HTTPS
applicationProfile: Web Browser
name: CDR Source Code
description: This source code is for reference only. The source code is provided to maintain transparency of the algorithm and processes used in creating the Climate Data Record (CDR). The source code is not intended to be portable to any computer system(s) beyond that of the original CDR producer's environment.
function: (CI_OnLineFunctionCode) download
role: (missing)
documentation: (CI_Citation)
title: NASA LaRC AVHRR & GOES Shortwave Channel Calibration FCDR Top Level Flowchart
date: (CI_Date)
date: 2016-09-22
dateType: (CI_DateTypeCode) publication
edition: Rev 1
identifier: (MD_Identifier)
code: CDRP-DIA-0828
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) publisher
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: (missing)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/AVHRR_Cloud_Properties_NASA/DataFlowDiagram_01B-30b.pdf
protocol: HTTPS
applicationProfile: Web Browser
name: CDR Data Flow Diagram
description: Flowcharts for the CDR product.
function: (CI_OnLineFunctionCode) information
role: (missing)
algorithm: (LE_Algorithm)
citation: (CI_Citation)
title: Climate Algorithm Theoretical Basis Document for AVHRR Radiances - NASA -- A Consistent Long-Term Cloud and Clear-Sky Radiation Property Dataset from the Advanced Very High Resolution Radiometer (AVHRR)
date: (CI_Date)
date: 2016-09-19
dateType: (CI_DateTypeCode) publication
edition: Revision 1
identifier: (MD_Identifier)
code: CDRP-ATBD-0826
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce
positionName: NOAA Climate Data Record Program Office
contactInfo: (CI_Contact)
phone: (CI_Telephone)
voice: +1 (828) 271-4800
facsimile: +1 (828) 271-4328
address: (CI_Address)
deliveryPoint: 151 Patton Avenue
deliveryPoint: Veach-Baley Federal Building, Room 447
city: Asheville
administrativeArea: NC
postalCode: 28801-5001
country: USA
electronicMailAddress: cdr_program.ncdc@noaa.gov
hoursOfService: 8:00 - 6:00 Eastern
role: (CI_RoleCode) publisher
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: (missing)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: https://www.ncei.noaa.gov/pub/data/sds/cdr/CDRs/AVHRR_Cloud_Properties_NASA/AlgorithmDescription_01B-30b.pdf
protocol: HTTPS
applicationProfile: Web Browser
name: Climate Algorithm Theoretical Basis Document
description: ATBD for the CDR product.
function: (CI_OnLineFunctionCode) download
role: (missing)
description: See Algorithm Citation
source: (LE_Source)
description: Please review associated documentation for more information about the dataset's creation. Please note that the source dataset is included in the original data files for the NOAA CDR Cloud and Clear-Sky Radiation Properties V1.0 dataset.
sourceCitation: (CI_Citation)
title: NOAA Climate Data Record (CDR) of Visible and Near Infrared Reflectance from GOES and AVHRR, Version 1.0
date: (missing)
edition: Version 1.0
identifier: (MD_Identifier)
code: gov.noaa.ncdc:C00860
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
role: (CI_RoleCode) distributor
citedResponsibleParty: (CI_ResponsibleParty)
organisationName: (missing)
contactInfo: (CI_Contact)
onlineResource: (CI_OnlineResource)
linkage: https://doi.org/10.7289/V5NK3C0J
protocol: HTTPS
applicationProfile: Landing Page
name: NOAA Climate Data Record (CDR) of Visible and Near Infrared Reflectance from GOES and AVHRR, Version 1.0 landing page
description: For more information about the source dataset, please review the landing page.
function: (CI_OnLineFunctionCode) information
role: (missing)
sourceExtent: (EX_Extent)
geographicElement: (EX_GeographicBoundingBox)
extentTypeCode: 1
westBoundLongitude: -180
eastBoundLongitude: 180
southBoundLatitude: -90
northBoundLatitude: 90
temporalElement: (EX_TemporalExtent)
extent:
TimePeriod:
beginPosition: 1978-01-01
endPosition:
sourceStep: ps001
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dataQualityInfo: (DQ_DataQuality)
scope: (DQ_Scope)
level: (MD_ScopeCode) repository
levelDescription: (MD_ScopeDescription)
other: NOAA National Centers for Environmental Information
lineage: (LI_Lineage)
processStep: (LE_ProcessStep)
description: 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.
dateTime:
DateTime: 2015-04-22T00:00:00
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metadataMaintenance: (MD_MaintenanceInformation)
maintenanceAndUpdateFrequency: (MD_MaintenanceFrequencyCode) asNeeded
maintenanceNote: Bulk metadata change applied on 2023-06-23. See version control repository history for metadata change details.
