Name: FAST AC Fields, ~5 sec resolution
Creator: Carlson, Charles, W.; Strangeway, Robert, J.; Ergun, Robert, E.
Published: 2023-01-01
License: https://spdx.org/licenses/CC0-1.0.html

* { margin: 0; padding: 0; border: 0; outline: 0; font-size: 100%; vertical-align: baseline; background: transparent; } body { background-color: #f0f0f0; // #eaf5e9; #277bc0; #d3d3f9; color: black; font-family: Verdana, Arial, sans-serif; font-size:12px; line-height: 1.2; } h1,h2,h3,h4,h5,h6 { margin-top: 10px; margin-bottom: 10px; font-weight:bold; } h1 { font-size: 140%; } h2 { font-size: 120%; } h3 { font-size: 110%; font-style: oblique; } p { margin-bottom: 0.75ex; } a:link, a:visited { color: #277bc0;/* #339;*/ font-weight:bolder; text-decoration:none; } a:hover { color: blue; font-weight:bolder; text-decoration:underline; } ul { list-style: square inside ; margin-bottom: 0.75ex; } table { border: thin solid #666; margin-top: 5px; margin-bottom: 10px; } table.nested { margin-left: 2em; } thead,tbody { border: thin solid #666; } td, th { margin: 0; padding: 2px 2px 2px 2px; } th { font-style: oblique; } h1.detail { } .header { width:100%; padding: 1em 10px 1em 10px; color: #fff; background: #5e87b0; font-weight: bold; text-shadow: 0 /*{b-bar-shadow-x}*/ 1px /*{b-bar-shadow-y}*/ 1px /*{b-bar-shadow-radius}*/ #3e6790 /*{b-bar-shadow-color}*/; text-align: center; font-size: 16px; display: block; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; outline: 0 !important; } .usa-banner { padding-left: 10px; overflow: hidden; } .official-websites { float: left; width: 50%; } .secure-websites { float: left; width: 50%; } .image-left { float: left; margin-right: 10px; } .footer { width: 100%; padding: 1em 10px 1em 10px; /* color: #fff; */ color: Black; background: #5e87b0; font-weight: bold; font-size: 16px; display: table; } div.footer-item { float: left; padding-left: 1em; padding-right: 1em; } /* this does not work a.footer-item:link { all: revert; } a.footer-item:visited { all: revert; } a.footer-item:hover { all: revert; } */ .inset { margin-left: 22%; } .page { padding: 10px 3% 10px 3%; } div.indent { margin-left: 2em; } div.term { margin-top: 5px; padding-left: 5px; border-top: 1px solid #DDD; font-weight: bold; } div.definition { margin-left: 5ex; } div.value { margin-left: 5ex; } div.product { background-color: white; border: thin solid #333; padding: 10px 15px 10px 15px; margin-top: 10px; } div.parameter { margin-top: 10px; padding: 5px 10px 10px 10px; border: thin dotted #333; background-color: #ebebeb; } #toc { border: thin solid #333; background-color: #F5F5F5; padding: 10px 15px 10px 15px; margin-left: 5%; margin-right: 5%; margin-bottom: 30px; } #toc ol, ul, li { padding-left: 5ex; } #toc ol { list-style-type: decimal; list-style-position: inside; } #toc ul { list-style-type: square; list-style-position: inside; } p.version { float: right; width: 100%; margin-top: 5px; text-align: right; font-size: x-small; } p.right { float: right; text-align: right; } .box-title { font-size: 120%; font-weight:bold; text-align: center; border-bottom: 1px solid #DDD; } ul.list { list-style-position: outside; padding-left: 1.5em; } li.list { text-align: left; padding-left: 0px; } .no-break { white-space: nowrap; } p.author { font-size: 120%; } div.brand { width: 100%; text-align: right; } div.abstract { display: table; position: relative; width: 100%; } div.citation { } div.access { float: left; width: 20%; background-color: white; border: thin solid #333; padding: 5px 5px 5px 5px; margin-right: 1em; } a.xml-logo:link, a.xml-logo:visited { background: #ff6600; color: #ffffff; font-weight:bolder; text-decoration:none; padding-left:2px; padding-right:2px; } a.xml-logo:hover { text-decoration:underline; } button { background-color: #5e87b0; border: none; /* 2px solid black; */ border-radius: 8px; color: white; padding: 3px 5px; text-align: center; text-decoration: none; display: inline-block; } button.usa-banner-button { background-color: initial; border: initial; border-radius: initial; color: initial; padding: initial; text-align: initial; text-decoration: underline; display: initial; } async function getResponseText(response) { document.body.style.cursor = 'default'; return await response.text(); } function getVersionedBibTeX(bibtex) { /* Add version field as suggested by August (Gus) Muench, Journals Data Editor, American Astronomical Society (email dated 7/7/25) */ const accessVersion = ", version={Accessed on " + currentIsoDateStr + "}"; const modifiedBibtex = bibtex.substring(0, bibtex.lastIndexOf("}")) + accessVersion + "}"; return modifiedBibtex; } function getBlob(text) { return new Blob([text], { type: "text/plain"}); } function clipboardAlert(text) { alert(text + "\nCopied to clipboard"); } function clipCitation(doi) { document.body.style.cursor = 'wait'; let url = "https://citation.doi.org/format?doi=" + doi.replace("https://doi.org/", "") + String.fromCodePoint(38) + "style=bibtex" + String.fromCodePoint(38) + "lang=en-US"; const text = new ClipboardItem({ "text/plain": fetch(url) .then(getResponseText) .then(getVersionedBibTeX) .then(getBlob) }); navigator.clipboard.write([text]); text.getType("text/plain") .then(getResponseText) .then(clipboardAlert); } function toggle_usa_banner_details() { const details = document.getElementById("usa-banner-details"); const indicator = document.getElementById("usa-banner-indicator"); if (details.style.display === "none") { details.style.display = "block"; indicator.textContent = "^"; } else { details.style.display = "none"; indicator.textContent = "v"; } } const monthName=new Array("January","February","March","April","May","June","July","August","September","October","November","December"); let currentDate = new Date(); let currentIsoDateStr = currentDate.toISOString().substring(0, 10); let currentDateStr = currentDate.getFullYear() + '-' + monthName[currentDate.getMonth()] + '-' + currentDate.getDate(); Data Access FTPS from SPDF (not with most browsers) HTTPS from SPDF CDAWeb WebService: CDAWeb Programmatic Data Access HAPI: CDAWeb HAPI Server FAST AC Fields, ~5 sec resolution var authors='Carlson, Charles, W.; Strangeway, Robert, J.; Ergun, Robert, E.'; document.write(authors); (2023). FAST AC Fields, ~5 sec resolution. [Data set]. Space Physics Data Facility. https://doi.org/10.48322/23b9-6g23. Accessed on document.write(currentDateStr);. Note: Proper references, including Copy BibTeX Citation or other formats, should include the "Accessed on date" to identify the version of the resource being cited in a given publication. ResourceID spase://NASA/NumericalData/FAST/ACF/PT5S Description FAST AC Fields Key Parameter CDF files consists of AC Electric and Magnetic fields measurements spanning a range from approximately 32 Hz to 2 MHz. The time range of each file is roughly 24 hours and consists of several passes over the auroral zone of approximately 20 minute duration, the time resolution is one spin period (approximately 5s). The orbital period of FAST is 133 minutes. Metadata Rights CC0-1.0: Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions. The actual data/software may be subject to a different license. View XML | Edit Details Version:2.7.1 NumericalData ResourceID spase://NASA/NumericalData/FAST/ACF/PT5S NamingAuthority NASA ResourceType NumericalData ResourceHeader ResourceName FAST AC Fields, ~5 sec resolution AlternateName FA_K0_ACF DOI https://doi.org/10.48322/23b9-6g23 ReleaseDate 2025-12-04 13:29:12Z RevisionHistory RevisionEvent ReleaseDate 2021-04-27 15:38:11 Note Only known prior ReleaseDate of the metadata RevisionEvent ReleaseDate 2023-07-30 12:34:56.789 Note Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727 RevisionEvent ReleaseDate 2025-09-04 12:34:56.789 Note Revised ObservedRegion. JMW RevisionEvent ReleaseDate 2025-10-02 15:11:50Z Note Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB RevisionEvent ReleaseDate 2025-12-04 13:29:12Z Note Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB Description FAST AC Fields Key Parameter CDF files consists of AC Electric and Magnetic fields measurements spanning a range from approximately 32 Hz to 2 MHz. The time range of each file is roughly 24 hours and consists of several passes over the auroral zone of approximately 20 minute duration, the time resolution is one spin period (approximately 5s). The orbital period of FAST is 133 minutes. Acknowledgement Users please acknowledge the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and FAST Principal Investigator Charles Carlson PublicationInfo Authors Carlson, Charles, W.; Strangeway, Robert, J.; Ergun, Robert, E. PublicationDate 2023-01-01 00:00:00 PublishedBy Space Physics Data Facility Contacts Role Person StartDate StopDate Note 1. PrincipalInvestigator spase://SMWG/Person/Charles.W.Carlson 2. GeneralContact spase://SMWG/Person/Robert.J.Strangeway 3. GeneralContact spase://SMWG/Person/Robert.E.Ergun 4. MetadataContact spase://SMWG/Person/Lee.Frost.Bargatze InformationURL Name FAST home page at UC Berkeley URL http://sprg.ssl.berkeley.edu/fast/intro.html Description The FAST home page maintained at the University of California Berkeley with links to publications, documentation, access to data and software. Language en PriorIDs spase://VWO/NumericalData/FAST/ACF/FAST_ACFields_PT5S spase://VWO/NumericalData/FAST/ACF/PT5S spase://VSPO/NumericalData/FAST/ACF/PT5S AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name FTPS from SPDF (not with most browsers) URL ftps://spdf.gsfc.nasa.gov/pub/data/fast/acf/k0/ Description In CDF via FTP from CDAWeb AccessURL Name HTTPS from SPDF URL https://spdf.gsfc.nasa.gov/pub/data/fast/acf/k0/ Description In CDF via HTTP from CDAWeb AccessURL Name CDAWeb URL https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=FA_K0_ACF&index=sp_phys ProductKey FA_K0_ACF Description Plots, lists, and data from CDAWeb. The resource name is: FA_K0_ACF Format CDF Encoding None AccessDirectoryTemplate https://cdaweb.gsfc.nasa.gov/pub/data/fast/acf/k0/$Y AccessFilenameTemplate fa_k0_acf_$Y$m$d_$v.cdf Acknowledgement Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and and FAST Principal Investigator Charles Carlson. AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF Availability Online AccessRights Open AccessURL Name CDAWeb Programmatic Data Access URL https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/FA_K0_ACF/clientLibraryExample/ Style WebService ProductKey FA_K0_ACF Description Access to this data from common programming environments. Note: this AccessInformation element was added by HDPWS. Format Binary Acknowledgement Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and and FAST Principal Investigator Charles Carlson. AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb Availability Online AccessRights Open RightsList Rights SchemeURI https://spdx.org/licenses/ RightsIdentifierScheme SPDX RightsIdentifier CC0-1.0 RightsURI https://spdx.org/licenses/CC0-1.0.html RightsName Creative Commons Zero v1.0 Universal Note CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products AccessURL Name CDAWeb HAPI Server URL https://cdaweb.gsfc.nasa.gov/hapi Style HAPI ProductKey FA_K0_ACF Description Web Service to this product using the HAPI interface. Format CSV Acknowledgement Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and and FAST Principal Investigator Charles Carlson. InstrumentIDs spase://SMWG/Instrument/FAST/EFLP spase://SMWG/Instrument/FAST/MAG MeasurementType Waves.Passive MeasurementType Spectrum MeasurementType ElectricField MeasurementType MagneticField TemporalDescription TimeSpan StartDate 1996-08-30 02:02:17 StopDate 2002-10-25 00:11:32 Cadence PT5S SpectralRange RadioFrequency ObservedRegion Earth.Magnetosphere ObservedRegion Earth.Magnetosphere.Polar ObservedRegion Earth.NearSurface ObservedRegion Earth.NearSurface.AuroralRegion ObservedRegion Earth.NearSurface.EquatorialRegion ObservedRegion Earth.NearSurface.Ionosphere ObservedRegion Earth.NearSurface.Plasmasphere ObservedRegion Earth.NearSurface.PolarCap Keywords Dynamic Spectrogram Spectrogram AKR Auroral Kilometric Radiation ELF Solitary Waves Terrestrial Kilometric Radiation TKR VLF Saucers Parameter #1 Name Time ParameterKey Epoch Description Time Units ms RenderingHints AxisLabel Epoch FillValue -1.0e+31 Support SupportQuantity Temporal Parameter #2 Name Time (PB5) ParameterKey Time_PB5 Description Time, in NSSDC Time_PB5 format: Units of year, day of year, msec of day ValidMin 1992, 1, 0 ValidMax 2020, 366, 86399999 Support SupportQuantity Temporal Parameter #3 Name Data quality flag ParameterKey quality_flag Description Data quality flag (0:good, 255:bad or missing Units (0=good,255=bad or missing) ValidMin 0 ValidMax 255 Support SupportQuantity Other Parameter #4 Name Post gap flag ParameterKey post_gap_flag Description Post gap flag (0:no gap, 1:gap) Support SupportQuantity Other Parameter #5 Name Time (secs since 1970-01-01) ParameterKey unix_time Description Time in seconds since 1970-01-01/00:00:00.0 UT Units s Support SupportQuantity Temporal Parameter #6 Name HF_E_SPEC Frequencies ParameterKey HF_E_FREQ Description 59 frequencies for HF_E_SPEC, range: 37.54 - 1974 kHz Units kHz Support SupportQuantity Other Parameter #7 Name HF Electric PSD (0-2 MHz) ParameterKey HF_E_SPEC Description Electric field power spectral density (0-2 MHz), in 59 frequency bins of width 32 kHz Units log10((V/m)**2/Hz) ValidMin -18.0 ValidMax -4.0 FillValue -1.0e+31 Wave WaveType PlasmaWaves WaveQuantity ACElectricField FrequencyRange SpectralRange RadioFrequency Low 37.54 High 1974 Units kHz Parameter #8 Name VLF_E_SPEC Frequencies ParameterKey VLF_E_FREQ Description 56 frequencies for VLF_E_SPEC variable, range 2.176 to 16.26 kHz Units kHz ValidMin 0.0 ValidMax 16.4 Support SupportQuantity Other Parameter #9 Name VLF Electric PSD (0-16 kHz) ParameterKey VLF_E_SPEC Description Electric field power spectral density (0-16 kHz), in 56 frequency bins Units log10((V/m)**2/Hz) ValidMin -15.0 ValidMax -3.0 Wave WaveType PlasmaWaves WaveQuantity ACElectricField FrequencyRange SpectralRange RadioFrequency Low 2.176 High 16.26 Units kHz Parameter #10 Name ELF_E_SPEC Frequencies ParameterKey ELF_E_FREQ Description 62 frequencies for ELF_E_SPEC variable, range 0.032 to 1.984 kHz Units kHz Support SupportQuantity Other Parameter #11 Name ELF Electric PSD (0-2 kHz) ParameterKey ELF_E_SPEC Description Electric field power spectral density (0-2 kHz), in 62 frequency bins Units log10((V/m)**2/Hz) Wave WaveType PlasmaWaves WaveQuantity ACElectricField FrequencyRange SpectralRange RadioFrequency Low 0.032 High 1.984 Units kHz Parameter #12 Name HF_B_SPEC Frequencies ParameterKey HF_B_FREQ Description 59 frequencies for HF_B_SPEC, range: 37.54 - 1974 kHz Units kHz Support SupportQuantity Other Parameter #13 Name HF Magnetic PSD (0-2 MHz) ParameterKey HF_B_SPEC Description Magnetic field power spectral density (0-2 MHz), in 59 frequency bins of width 32 kHz Units log10(nT**2/Hz) ValidMin -13.0 ValidMax 0.0 FillValue -1.0e+31 Wave WaveType PlasmaWaves WaveQuantity ACMagneticField FrequencyRange SpectralRange RadioFrequency Low 37.54 High 1974 Units kHz Parameter #14 Name VLF_B_SPEC Frequencies ParameterKey VLF_B_FREQ Description 56 frequencies for VLF_B_SPEC variable, range 2.176 to 16.26 kHz Units kHz ValidMin 0.0 ValidMax 16.4 Support SupportQuantity Other Parameter #15 Name VLF B PSD (0-16 kHz) ParameterKey VLF_B_SPEC Description Magnetic field power spectral density (0-16 kHz), in 56 frequency bins Units log10(nT**2/Hz) ValidMin -21.0 ValidMax -8.0 Wave WaveType PlasmaWaves WaveQuantity ACMagneticField FrequencyRange SpectralRange RadioFrequency Low 2.176 High 16.26 Units kHz Parameter #16 Name ELF_B_SPEC Frequencies ParameterKey ELF_B_FREQ Description 62 frequencies for ELF_B_SPEC variable, range 0.032 to 1.984 kHz Units kHz Support SupportQuantity Other Parameter #17 Name ELF Magnetic PSD (0-2 kHz) ParameterKey ELF_B_SPEC Description Magnetic field power spectral density (0-2 kHz), in 62 frequency bins Units log10(nT**2/Hz) Wave WaveType PlasmaWaves WaveQuantity ACMagneticField FrequencyRange SpectralRange RadioFrequency Low 0.032 High 1.984 Units kHz Parameter #18 Name HF E and B Power (0-2 MHz) ParameterKey HF_PWR Description array containing HF Electric Power and HF Magnetic Power (0-2 MHz) Structure Size 2 Element Name HF Electric Power Index 1 ParameterKey HF E PWR Units (V/m)**2 ValidMin 1.0e-14 ValidMax 1.0e-05 FillValue -1.0e+31 Field FieldQuantity Electric Parameter #19 Name HF E and B Power (0-2 MHz) ParameterKey HF_PWR Description array containing HF Electric Power and HF Magnetic Power (0-2 MHz) Structure Size 2 Element Name HF Magnetic Power Index 2 ParameterKey HF B PWR Units nT**2 ValidMin 1.0e-12 ValidMax 0.001 FillValue -1.0e+31 Field FieldQuantity Magnetic Parameter #20 Name VLF E and B Power (0-16 kHz) ParameterKey VLF_PWR Description array containing VLF Electric Power and VLF Magnetic Power (0-16 kHz) Structure Size 2 Element Name VLF Electric Power Index 1 ParameterKey VLF E PWR Units (V/m)**2 ValidMin 1.0e-17 ValidMax 1.0e+07 FillValue -1.0e+31 Field FieldQuantity Electric Parameter #21 Name VLF E and B Power (0-16 kHz) ParameterKey VLF_PWR Description array containing VLF Electric Power and VLF Magnetic Power (0-16 kHz) Structure Size 2 Element Name VLF Magnetic Power Index 2 ParameterKey VLF B PWR Units nT**2 ValidMin 1.0e-15 ValidMax 1.0e+09 FillValue -1.0e+31 Field FieldQuantity Magnetic Parameter #22 Name ELF E and B Power (0-2 kHz) ParameterKey ELF_PWR Description array containing ELF Electric Power and ELF Magnetic Power (0-2 kHz) Structure Size 2 Element Name ELF Electric Power Index 1 ParameterKey ELF E PWR Units (V/m)**2 ValidMin 1.0e-12 ValidMax 100.0 FillValue -1.0e+31 Field FieldQuantity Electric Parameter #23 Name ELF E and B Power (0-2 kHz) ParameterKey ELF_PWR Description array containing ELF Electric Power and ELF Magnetic Power (0-2 kHz) Structure Size 2 Element Name ELF Magnetic Power Index 2 ParameterKey ELF B PWR Units nT**2 ValidMin 1.0e-10 ValidMax 10000.0 FillValue -1.0e+31 Field FieldQuantity Magnetic Parameter #24 Name FAST orbit number ParameterKey orbit Description FAST orbit number--normally increments by one for each successive orbit ValidMin 0 ValidMax 100000 FillValue -2147483648 Support SupportQuantity Other Parameter #25 Name Right Ascension of Spin Axis ParameterKey fa_spin_ra Description Right Ascension of Spin Axis, degrees, GEI coords Units deg ValidMin 0.0 ValidMax 360.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #26 Name Declination of Spin Axis ParameterKey fa_spin_dec Description Declination of Spin Axis, degrees, GEI coords Units deg ValidMin -90.0 ValidMax 90.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #27 Name FAST Spacecraft Position ParameterKey r Description FAST Spacecraft position, cartesian 3 vector, GEI coords, km Units km Structure Size 3 Element Name x GEI Index 1 ParameterKey x_GEI Units km ValidMin -12000.0 ValidMax 12000.0 FillValue -1.0e+31 Element Name y GEI Index 2 ParameterKey y_GEI Units km ValidMin -12000.0 ValidMax 12000.0 FillValue -1.0e+31 Element Name z GEI Index 3 ParameterKey z_GEI Units km ValidMin -12000.0 ValidMax 12000.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #28 Name FAST Spacecraft Velocity ParameterKey v Description FAST Spacecraft velocity, cartesian 3 vector, GEI coords, km/s Units km/s Structure Size 3 Element Name Vx GEI Index 1 ParameterKey Vx_GEI Units km/s ValidMin -12.0 ValidMax 12.0 FillValue -1.0e+31 Element Name Vy GEI Index 2 ParameterKey Vy_GEI Units km/s ValidMin -12.0 ValidMax 12.0 FillValue -1.0e+31 Element Name Vz GEI Index 3 ParameterKey Vz_GEI Units km/s ValidMin -12.0 ValidMax 12.0 FillValue -1.0e+31 Support SupportQuantity Velocity Parameter #29 Name Spacecraft Altitude ParameterKey alt Description Spacecraft altitude above an equatorial earth radius of 6378.14 km, km Units km ValidMin 0.0 ValidMax 5000.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #30 Name Footprint Latitude ParameterKey flat Description Geodetic latitude of magnetic footprint at 100 km above the oblate earth, deg Units deg ValidMin -90.0 ValidMax 90.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #31 Name Footprint Longitude ParameterKey flng Description Geodetic longitude of magnetic footprint at 100 km above the oblate earth, deg Units deg ValidMin -180.0 ValidMax 180.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #32 Name Magnetic Local Time ParameterKey mlt Description Magnetic Local Time, hours Units hour ValidMin 0.0 ValidMax 24.0 FillValue -1.0e+31 Support SupportQuantity Positional Parameter #33 Name Invariant Latitude ParameterKey ilat Description Invariant Latitude, degrees Units deg ValidMin -90.0 ValidMax 90.0 FillValue -1.0e+31 Support SupportQuantity Positional