Released
Dataset

ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE

Cite as:

Mayer-Gürr, Torsten; Behzadpur, Saniya; Ellmer, Matthias; Kvas, Andreas; Klinger, Beate; Strasser, Sebastian; Zehentner, Norbert (2018): ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE. GFZ Data Services. http://doi.org/10.5880/ICGEM.2018.003

Status

I   N       R   E   V   I   E   W : Mayer-Gürr, Torsten; Behzadpur, Saniya; Ellmer, Matthias; Kvas, Andreas; Klinger, Beate; Strasser, Sebastian; Zehentner, Norbert (2018): ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE. GFZ Data Services. http://doi.org/10.5880/ICGEM.2018.003

Abstract

The ITSG-Grace2018 gravity field model is the latest GRACE-only gravity field model computed at Graz University of Technology, providing unconstrained monthly and regularized daily solutions as well as a long-term static field. For each month of the observation period, sets of spherical harmonic coefficients for different maximum degrees (60, 96, 120) were estimated without applying any regularization.

In order to resolve high-frequency gravity field variations as detailed as possible, a set of spherical harmonic coefficients up to degree and order 40 was co-estimated. K-band range rates with a sampling of 5 seconds and kinematic orbits with a sampling of 5 minutes were used as observations. The kinematic orbits of the GRACE satellites (Zehentner and Mayer-Gürr 2013, 2014) were processed using the GPS orbits and clock solutions provided by CODE. Additionally, a full accelerometer scale factor matrix was estimated per day (Klinger and Mayer-Gürr, 2016). The accelerometer bias was modelled through cubic splines with a node interval of six hours and estimated for each axis and day. Detailed information about ITSG-Grace2018 is available at http://ifg.tugraz.at/ITSG-Grace2018. The monthly and daily data covers the period between April 2002 and August 2016.

Methods

Monthly solutions:
product_type gravity_field
modelname ITSG-Grace2018_nLL_YYYY-MM
earth_gravity_constant 3.9860044150e+14
radius 6.3781363000e+06
max_degree LL errors formal
norm fully_normalized
tide_system zero_tide

Daily solutions:
product_type gravity_field
modelname ITSG-Grace2018_n40_YYYY-MM-DD
earth_gravity_constant 3.9860044150e+14
radius 6.3781363000e+06
max_degree 40
errors formal
norm fully_normalized
tide_system zero_tide

Static Field:
product_type gravity_field
modelname ITSG-Grace2018s
earth_gravity_constant 3.9860044150e+14
radius 6.3781363000e+06
max_degree 200
errors formal
norm fully_normalized
tide_system zero_tide

Dataset Contact

Contributors

Ince, Sinem; Reißland, Sven

Keywords

GRACE, ICGEM, gravity field, temporal gravity field models

GCMD Science Keywords

More Metadata

  • iso19115:  /  download xml
    • MD_Metadata (xsi:schemaLocation=http://www.isotc211.org/2005/gmd http://www.isotc211.org/2005/gmd/gmd.xsd)
      • fileIdentifier
        • CharacterString: doi:10.5880/ICGEM.2018.003
      • language
        • LanguageCode (codeList=http://www.loc.gov/standards/iso639-2/ codeListValue=eng): eng
      • characterSet
        • MD_CharacterSetCode (codeList=http://www.isotc211.org/2005/resources/codeList.xml#MD_CharacterSetCode codeListValue=utf8): 
      • hierarchyLevel
        • MD_ScopeCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ScopeCode codeListValue=): 
      • hierarchyLevelName
        • CharacterString: 
      • contact
        • CI_ResponsibleParty
          • organisationName
            • CharacterString: GFZ German Research Centre for Geosciences
          • contactInfo
            • CI_Contact
              • address
                • CI_Address
                  • electronicMailAddress
                    • CharacterString: 
              • onlineResource
                • CI_OnlineResource
                  • linkage
                    • URL: http://www.gfz-potsdam.de/
                  • function
                    • CI_OnLineFunctionCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode codeListValue=information): information
          • role
            • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=pointOfContact): pointOfContact
      • dateStamp
        • Date: 2018-12-04
      • referenceSystemInfo
        • MD_ReferenceSystem
          • referenceSystemIdentifier
            • RS_Identifier
              • code
                • CharacterString: urn:ogc:def:crs:EPSG:4326
      • identificationInfo
        • MD_DataIdentification
          • citation
            • CI_Citation
              • title
                • CharacterString: ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE
              • date
                • CI_Date
                  • date
                    • Date: 2018-12-04
                  • dateType
                    • CI_DateTypeCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode codeListValue=revision): revision
              • identifier
                • MD_Identifier
                  • code
                    • CharacterString: doi:10.5880/ICGEM.2018.003
              • citedResponsibleParty (xlink:href=http://orcid.org/0000-0003-2609-428X)
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Mayer-Gürr, Torsten
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
              • citedResponsibleParty (xlink:href=http://orcid.org/0000-0003-1187-3862)
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Behzadpur, Saniya
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
              • citedResponsibleParty (xlink:href=http://orcid.org/0000-0001-9008-7784)
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Ellmer, Matthias
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
              • citedResponsibleParty (xlink:href=http://orcid.org/0000-0003-1199-7742)
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Kvas, Andreas
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
              • citedResponsibleParty (xlink:href=http://orcid.org/0000-0001-9625-8230)
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Klinger, Beate
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
              • citedResponsibleParty (xlink:href=http://orcid.org/0000-0001-8045-5360)
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Strasser, Sebastian
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
              • citedResponsibleParty
                • CI_ResponsibleParty
                  • individualName
                    • CharacterString: Zehentner, Norbert
                  • organisationName
                    • CharacterString: Graz University of Technology, Graz, Austria
                  • role
                    • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_author): author
          • abstract
            • CharacterString: The ITSG-Grace2018 gravity field model is the latest GRACE-only gravity field model computed at Graz University of Technology, providing unconstrained monthly and regularized daily solutions as well as a long-term static field. For each month of the observation period, sets of spherical harmonic coefficients for different maximum degrees (60, 96, 120) were estimated without applying any regularization. In order to resolve high-frequency gravity field variations as detailed as possible, a set of spherical harmonic coefficients up to degree and order 40 was co-estimated. K-band range rates with a sampling of 5 seconds and kinematic orbits with a sampling of 5 minutes were used as observations. The kinematic orbits of the GRACE satellites (Zehentner and Mayer-Gürr 2013, 2014) were processed using the GPS orbits and clock solutions provided by CODE. Additionally, a full accelerometer scale factor matrix was estimated per day (Klinger and Mayer-Gürr, 2016). The accelerometer bias was modelled through cubic splines with a node interval of six hours and estimated for each axis and day. Detailed information about ITSG-Grace2018 is available at http://ifg.tugraz.at/ITSG-Grace2018. The monthly and daily data covers the period between April 2002 and August 2016. Monthly solutions: product_type gravity_field modelname ITSG-Grace2018_nLL_YYYY-MM earth_gravity_constant 3.9860044150e+14 radius 6.3781363000e+06 max_degree LL errors formal norm fully_normalized tide_system zero_tide Daily solutions: product_type gravity_field modelname ITSG-Grace2018_n40_YYYY-MM-DD earth_gravity_constant 3.9860044150e+14 radius 6.3781363000e+06 max_degree 40 errors formal norm fully_normalized tide_system zero_tide Static Field: product_type gravity_field modelname ITSG-Grace2018s earth_gravity_constant 3.9860044150e+14 radius 6.3781363000e+06 max_degree 200 errors formal norm fully_normalized tide_system zero_tide
          • status
            • MD_ProgressCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#MD_ProgressCode codeListValue=Complete): Complete
          • pointOfContact
            • CI_ResponsibleParty
              • individualName
                • CharacterString: Mayer-Gürr, Torsten
              • organisationName
                • CharacterString: Graz University of Technology
              • contactInfo
                • CI_Contact
                  • address
                    • CI_Address
                      • electronicMailAddress
                        • CharacterString: mayer-guerr(_at_)tugraz.at
                  • onlineResource
                    • CI_OnlineResource
                      • linkage
                        • URL: ifg.tugraz.at
                      • function
                        • CI_OnLineFunctionCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode_information): information
              • role
                • CI_RoleCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_RoleCode_pointOfContact): pointOfContact
          • descriptiveKeywords
            • MD_Keywords
              • keyword
                • CharacterString: GRACE
              • keyword
                • CharacterString: ICGEM
              • keyword
                • CharacterString: gravity field
              • keyword
                • CharacterString: temporal gravity field models
          • descriptiveKeywords
            • MD_Keywords
              • keyword
                • CharacterString: EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS
              • keyword
                • CharacterString: EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY
              • thesaurusName
                • CI_Citation
                  • title
                    • CharacterString: NASA/GCMD Earth Science Keywords
                  • date
                    • CI_Date
                      • date (gco:nilReason=missing): 
                      • dateType
                        • CI_DateTypeCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode codeListValue=publication): publication
          • resourceConstraints (xlink:href=http://creativecommons.org/licenses/by/4.0/)
            • MD_Constraints
              • useLimitation
                • CharacterString: CC BY 4.0
          • resourceConstraints
            • MD_LegalConstraints
              • accessConstraints
                • MD_RestrictionCode (codeList=http://www.isotc211.org/2005/resources/codeList.xml#MD_RestrictionCode codeListValue=otherRestrictions): 
              • otherConstraints
                • CharacterString: CC BY 4.0
          • resourceConstraints
            • MD_SecurityConstraints
              • classification
                • MD_ClassificationCode (codeList=http://www.isotc211.org/2005/resources/codeList.xml#MD_ClassificationCode codeListValue=unclassified): 
          • aggregationInfo
            • MD_AggregateInformation
              • aggregateDataSetIdentifier
                • RS_Identifier
                  • code
                    • CharacterString: 10.5880/icgem.2016.007
                  • codeSpace
                    • CharacterString: DOI
              • associationType
                • DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=IsNewVersionOf): IsNewVersionOf
          • aggregationInfo
            • MD_AggregateInformation
              • aggregateDataSetIdentifier
                • RS_Identifier
                  • code
                    • CharacterString: https://meetingorganizer.copernicus.org/EGU2018/EGU2018-11833.pdf
                  • codeSpace
                    • CharacterString: URL
              • associationType
                • DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=References): References
          • aggregationInfo
            • MD_AggregateInformation
              • aggregateDataSetIdentifier
                • RS_Identifier
                  • code
                    • CharacterString: 10.1007/978-3-319-10837-7_14
                  • codeSpace
                    • CharacterString: DOI
              • associationType
                • DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=References): References
          • aggregationInfo
            • MD_AggregateInformation
              • aggregateDataSetIdentifier
                • RS_Identifier
                  • code
                    • CharacterString: 10.1016/j.asr.2017.04.015
                  • codeSpace
                    • CharacterString: DOI
              • associationType
                • DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=References): References
          • aggregationInfo
            • MD_AggregateInformation
              • aggregateDataSetIdentifier
                • RS_Identifier
                  • code
                    • CharacterString: 10.1016/j.asr.2016.08.007
                  • codeSpace
                    • CharacterString: DOI
              • associationType
                • DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=References): References
          • aggregationInfo
            • MD_AggregateInformation
              • aggregateDataSetIdentifier
                • RS_Identifier
                  • code
                    • CharacterString: http://ifg.tugraz.at/ITSG-Grace2018
                  • codeSpace
                    • CharacterString: URL
              • associationType
                • DS_AssociationTypeCode (codeList=http://datacite.org/schema/kernel-4 codeListValue=IsDocumentedBy): IsDocumentedBy
          • language
            • CharacterString: eng
          • extent
            • EX_Extent
              • description
                • CharacterString: ITSG-Grace2018 daily and monthly models
              • geographicElement
                • EX_GeographicBoundingBox
                  • westBoundLongitude
                    • Decimal: -180
                  • eastBoundLongitude
                    • Decimal: 180
                  • southBoundLatitude
                    • Decimal: -90
                  • northBoundLatitude
                    • Decimal: 90
              • temporalElement
                • EX_TemporalExtent
                  • extent
                    • TimePeriod (gml:id=ext-886)
                      • beginPosition: 2002-04
                      • endPosition: 2016-08
      • distributionInfo
        • MD_Distribution
          • transferOptions
            • MD_DigitalTransferOptions
              • onLine
                • CI_OnlineResource
                  • linkage
                    • URL: http://dx.doi.org/doi:10.5880/ICGEM.2018.003
                  • protocol
                    • CharacterString: WWW:LINK-1.0-http--link
                  • name
                    • CharacterString: Download
                  • description
                    • CharacterString: Download
                  • function
                    • CI_OnLineFunctionCode (codeList=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode codeListValue=http://www.isotc211.org/2005/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode_download): download
  • datacite:  /  download xml
    • resource (xsi:schemaLocation=http://datacite.org/schema/kernel-4 http://schema.datacite.org/meta/kernel-4/metadata.xsd)
      • identifier (identifierType=DOI): 10.5880/ICGEM.2018.003
      • creators
        • creator
          • creatorName: Mayer-Gürr, Torsten
          • givenName: Torsten
          • familyName: Mayer-Gürr
          • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0003-2609-428X
          • affiliation: Graz University of Technology, Graz, Austria
        • creator
          • creatorName: Behzadpur, Saniya
          • givenName: Saniya
          • familyName: Behzadpur
          • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0003-1187-3862
          • affiliation: Graz University of Technology, Graz, Austria
        • creator
          • creatorName: Ellmer, Matthias
          • givenName: Matthias
          • familyName: Ellmer
          • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0001-9008-7784
          • affiliation: Graz University of Technology, Graz, Austria
        • creator
          • creatorName: Kvas, Andreas
          • givenName: Andreas
          • familyName: Kvas
          • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0003-1199-7742
          • affiliation: Graz University of Technology, Graz, Austria
        • creator
          • creatorName: Klinger, Beate
          • givenName: Beate
          • familyName: Klinger
          • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0001-9625-8230
          • affiliation: Graz University of Technology, Graz, Austria
        • creator
          • creatorName: Strasser, Sebastian
          • givenName: Sebastian
          • familyName: Strasser
          • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0001-8045-5360
          • affiliation: Graz University of Technology, Graz, Austria
        • creator
          • creatorName: Zehentner, Norbert
          • givenName: Norbert
          • familyName: Zehentner
          • affiliation: Graz University of Technology, Graz, Austria
      • titles
        • title (xml:lang=eng): ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE
      • publisher: GFZ Data Services
      • publicationYear: 2018
      • subjects
        • subject: GRACE
        • subject: ICGEM
        • subject: gravity field
        • subject: temporal gravity field models
        • subject (schemeURI=http://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/sciencekeywords subjectScheme=NASA/GCMD Earth Science Keywords xml:lang=en): EARTH SCIENCE > SOLID EARTH > GEODETICS > GEOID CHARACTERISTICS
        • subject (schemeURI=http://gcmdservices.gsfc.nasa.gov/kms/concepts/concept_scheme/sciencekeywords subjectScheme=NASA/GCMD Earth Science Keywords xml:lang=en): EARTH SCIENCE > SOLID EARTH > GRAVITY/GRAVITATIONAL FIELD > GRAVITY
      • contributors
        • contributor (contributorType=DataCurator)
          • contributorName: Ince, Sinem
          • givenName: Sinem
          • familyName: Ince
          • affiliation: GFZ German Research Centre for Geosciences, Potsdam, Germany
        • contributor (contributorType=DataManager)
          • contributorName: Reißland, Sven
          • givenName: Sven
          • familyName: Reißland
          • affiliation: GFZ German Research Centre for Geosciences, Potsdam, Germany
      • dates
        • date (dateType=Collected): 2002-04/2016-08
      • language: eng
      • resourceType (resourceTypeGeneral=Dataset): 
      • relatedIdentifiers
        • relatedIdentifier (relatedIdentifierType=DOI relationType=IsNewVersionOf): 10.5880/icgem.2016.007
        • relatedIdentifier (relatedIdentifierType=URL relationType=References): https://meetingorganizer.copernicus.org/EGU2018/EGU2018-11833.pdf
        • relatedIdentifier (relatedIdentifierType=DOI relationType=References): 10.1007/978-3-319-10837-7_14
        • relatedIdentifier (relatedIdentifierType=DOI relationType=References): 10.1016/j.asr.2017.04.015
        • relatedIdentifier (relatedIdentifierType=DOI relationType=References): 10.1016/j.asr.2016.08.007
        • relatedIdentifier (relatedIdentifierType=URL relationType=IsDocumentedBy): http://ifg.tugraz.at/ITSG-Grace2018
      • sizes
        • size: 4 Files
      • formats
        • format: application/octet-stream
        • format: application/octet-stream
        • format: application/octet-stream
        • format: application/octet-stream
      • rightsList
        • rights (rightsURI=http://creativecommons.org/licenses/by/4.0/): CC BY 4.0
      • descriptions
        • description (descriptionType=Abstract)
          • br: 
          • br: 
        • description (descriptionType=Methods)
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
          • br: 
      • geoLocations
        • geoLocation
          • geoLocationBox
            • westBoundLongitude: -180
            • eastBoundLongitude: 180
            • southBoundLatitude: -90
            • northBoundLatitude: 90
          • geoLocationPlace: ITSG-Grace2018 daily and monthly models
  • dif:  /  download xml
    • DIF (xsi:schemaLocation=http://gcmd.gsfc.nasa.gov/Aboutus/xml/dif/ http://gcmd.nasa.gov/Aboutus/xml/dif/dif_v9.8.2.xsd)
      • Entry_ID: 10.5880/ICGEM.2018.003
      • Entry_Title: ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE
      • Data_Set_Citation
        • Dataset_Creator: Mayer-Gürr, Torsten; Behzadpur, Saniya; Ellmer, Matthias; Kvas, Andreas; Klinger, Beate; Strasser, Sebastian; Zehentner, Norbert
        • Dataset_Title: ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE
        • Dataset_Release_Date: 2018
        • Dataset_Release_Place: Potsdam, Germany
        • Dataset_Publisher: GFZ Data Services
        • Online_Resource: http://dx.doi.org/10.5880/ICGEM.2018.003
      • Parameters
        • Category: EARTH SCIENCE
        • Topic: SOLID EARTH
        • Term: GEODETICS
        • Variable_Level_1: GEOID CHARACTERISTICS
      • Parameters
        • Category: EARTH SCIENCE
        • Topic: SOLID EARTH
        • Term: GRAVITY/GRAVITATIONAL FIELD
        • Variable_Level_1: GRAVITY
      • ISO_Topic_Category: geoscientificInformation
      • Keyword: GRACE
      • Keyword: ICGEM
      • Keyword: gravity field
      • Keyword: temporal gravity field models
      • Spatial_Coverage
        • Southernmost_Latitude: -90
        • Northernmost_Latitude: 90
        • Westernmost_Longitude: -180
        • Easternmost_Longitude: 180
      • Data_Center
        • Data_Center_Name
          • Short_Name: Deutsches GeoForschungsZentrum GFZ
          • Long_Name: GFZ
        • Personnel
          • Role: DATA CENTER CONTACT
          • Last_Name: Deutsches GeoForschungsZentrum GFZ
      • Summary
        • Abstract: The ITSG-Grace2018 gravity field model is the latest GRACE-only gravity field model computed at Graz University of Technology, providing unconstrained monthly and regularized daily solutions as well as a long-term static field. For each month of the observation period, sets of spherical harmonic coefficients for different maximum degrees (60, 96, 120) were estimated without applying any regularization. In order to resolve high-frequency gravity field variations as detailed as possible, a set of spherical harmonic coefficients up to degree and order 40 was co-estimated. K-band range rates with a sampling of 5 seconds and kinematic orbits with a sampling of 5 minutes were used as observations. The kinematic orbits of the GRACE satellites (Zehentner and Mayer-Gürr 2013, 2014) were processed using the GPS orbits and clock solutions provided by CODE. Additionally, a full accelerometer scale factor matrix was estimated per day (Klinger and Mayer-Gürr, 2016). The accelerometer bias was modelled through cubic splines with a node interval of six hours and estimated for each axis and day. Detailed information about ITSG-Grace2018 is available at http://ifg.tugraz.at/ITSG-Grace2018. The monthly and daily data covers the period between April 2002 and August 2016.
      • Metadata_Name: DIF
      • Metadata_Version: 9.8.2
  • escidoc:  /  download xml
    • resource
      • title (xml:lang=eng): ITSG-Grace2018 - Monthly, Daily and Static Gravity Field Solutions from GRACE
      • creator
        • creatorName: Mayer-Gürr, Torsten
        • givenName: Torsten
        • familyName: Mayer-Gürr
        • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0003-2609-428X
        • affiliation: Graz University of Technology, Graz, Austria
      • creator
        • creatorName: Behzadpur, Saniya
        • givenName: Saniya
        • familyName: Behzadpur
        • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0003-1187-3862
        • affiliation: Graz University of Technology, Graz, Austria
      • creator
        • creatorName: Ellmer, Matthias
        • givenName: Matthias
        • familyName: Ellmer
        • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0001-9008-7784
        • affiliation: Graz University of Technology, Graz, Austria
      • creator
        • creatorName: Kvas, Andreas
        • givenName: Andreas
        • familyName: Kvas
        • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0003-1199-7742
        • affiliation: Graz University of Technology, Graz, Austria
      • creator
        • creatorName: Klinger, Beate
        • givenName: Beate
        • familyName: Klinger
        • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0001-9625-8230
        • affiliation: Graz University of Technology, Graz, Austria
      • creator
        • creatorName: Strasser, Sebastian
        • givenName: Sebastian
        • familyName: Strasser
        • nameIdentifier (nameIdentifierScheme=ORCID): 0000-0001-8045-5360
        • affiliation: Graz University of Technology, Graz, Austria
      • creator
        • creatorName: Zehentner, Norbert
        • givenName: Norbert
        • familyName: Zehentner
        • affiliation: Graz University of Technology, Graz, Austria

Location

Click/hover over markers or bounding boxes to see related details. Click/hover over details to see related marker or bounding box.

    Files

    License: CC BY 4.0

    Dataset Description

    Documented by