Name: AIM/CDE dust grain impact data
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 Data interface page at Hampton U. AIM/CDE dust grain impact data ResourceID spase://NASA/NumericalData/AIM/CDE/PT1D Description AIM/CDE (Cosmic Dust Experiment) data are available as Levels 1 and 2 daily netCDF files. L1 data contains, for each dust grain impact, a time tag, pulse height data, a number of electrons released by the impact, and engineering and housekeeping data. L2 data adds the mass of the impacting particle and spacecraft location at time of impact. Future L3 and L4 products will add total mass impacting per orbit and impact rates (L3) and mass correlation with CIPS total particle mass and Polar Mesospheric Cloud brightness. 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/AIM/CDE/PT1D NamingAuthority NASA ResourceType NumericalData ResourceHeader ResourceName AIM/CDE dust grain impact data ReleaseDate 2026-06-26 13:14:26Z RevisionHistory RevisionEvent ReleaseDate 2020-12-05 20:54:15Z Note Only known prior ReleaseDate of the metadata RevisionEvent ReleaseDate 2025-12-04 13:28:27Z Note Added MetadataRightsList and RightsList(s). Added ResourceType and NamingAuthority. Updated to 2.7.1. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. ZCB RevisionEvent ReleaseDate 2026-06-26 13:14:26Z Note Add 'Z' to TemporalDescription:TimeSpan:StartDate. ZCB Description AIM/CDE (Cosmic Dust Experiment) data are available as Levels 1 and 2 daily netCDF files. L1 data contains, for each dust grain impact, a time tag, pulse height data, a number of electrons released by the impact, and engineering and housekeeping data. L2 data adds the mass of the impacting particle and spacecraft location at time of impact. Future L3 and L4 products will add total mass impacting per orbit and impact rates (L3) and mass correlation with CIPS total particle mass and Polar Mesospheric Cloud brightness. Acknowledgement National Aeronautics and Space Administration; Laboratory for Atmospheric and Space Physics (LASP) of Colorado University; Dr. Mihaly Horanyi; Dr. James M. Russell, III Contacts Role Person StartDate StopDate Note 1. GeneralContact spase://SMWG/Person/Mihaly.Horanyi InformationURL Name Documentation directory on the SPDF server URL https://spdf.gsfc.nasa.gov/pub/data/aim/cde/documentation/ InformationURL Name info interface page at Hampton U. URL http://aim.hamptonu.edu/library/documentation/instruments/cde/cde_docs.html PriorIDs spase://VSPO/NumericalData/AIM/CDE/L1_L2_Data spase://VSPO/NumericalData/AIM/CDE/PT1D AccessInformation RepositoryID spase://SMWG/Repository/NASA/GSFC/SPDF 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/aim/cde/data/ Description In CDF via FTP from CDAWeb AccessURL Name HTTPS from SPDF URL https://spdf.gsfc.nasa.gov/pub/data/aim/cde/data/ Description In CDF via HTTP from CDAWeb Format NetCDF Encoding None AccessInformation RepositoryID spase://SMWG/Repository/UCOLO Availability Online AccessRights Open AccessURL Name Data interface page at Hampton U. URL http://aim.hamptonu.edu/sds/cal_index_aim.php?instrument=cde Description For levels 1 and 2 only Format NetCDF InstrumentIDs spase://SMWG/Instrument/AIM/CDE MeasurementType Dust TemporalDescription TimeSpan StartDate 2007-06-01 00:00:00Z RelativeStopDate -P10M ObservedRegion Earth.NearSurface Parameter #1 Name Mass Treshold ParameterKey MASS_DATA.MASS_THRESH Description Threshold in grams. Units grams Structure Size 15752 Particle ParticleType Dust Qualifier Minimum ParticleQuantity Mass Parameter #2 Name GPS Time ParameterKey MASS_DATA.TIME Description GPS time tag. Time of event in gps. Units gps Structure Size 15752 Support Qualifier Scalar SupportQuantity Temporal Parameter #3 Name Channel ParameterKey MASS_DATA.CHANNEL Description ID of the channel Structure Size 15752 Support Qualifier Scalar SupportQuantity InstrumentMode Parameter #4 Name Charge ParameterKey MASS_DATA.CHARGE Description Charge generated from each event Units Number of electrons Structure Size 15752 Particle ParticleType Dust Qualifier Magnitude ParticleQuantity ChargeState Parameter #5 Name Mass of the Particle ParameterKey MASS_DATA.MASS Description Mass of a particle that would cause this event. Units grams Structure Size 15752 Particle ParticleType Dust Qualifier Magnitude ParticleQuantity Mass Parameter #6 Name Sigma Plus for Mass ParameterKey MASS_DATA.M_SIGPLUS Description Plus sigma for mass generated Units grams Structure Size 15752 Particle ParticleType Dust Qualifier Uncertainty ParticleQuantity Mass Parameter #7 Name Sigma Minus for Mass ParameterKey MASS_DATA.M_SIGMINUS Description Minus sigma for mass generated Units grams Structure Size 15752 Particle ParticleType Dust Qualifier Uncertainty ParticleQuantity Mass Parameter #8 Name Position Information ParameterKey MASS_DATA.POSITION Structure Size 15752 5 Description Positional Information Element Name Latitude? Qualifier DirectionAngle.ElevationAngle Index 1 Units radians? Element Name Longitude Qualifier DirectionAngle.AzimuthAngle Index 2 Units radians? Element Name Altitude Qualifier Magnitude Index 3 Units km Element Name CDE defined coordinate system with 0-360 degrees of latitude Qualifier DirectionAngle Index 4 Units degrees ValidMin 0 ValidMax 360 Element Name glongitude? Qualifier DirectionAngle.AzimuthAngle Index 5 Units degrees Support Qualifier Directional SupportQuantity Positional Parameter #9 Name Orbit Number ParameterKey MASS_DATA.ORBITNUM Description Orbit number during which the event occurred. Structure Size 15752 Support Qualifier Scalar SupportQuantity Temporal Parameter #10 Name Science Quality Flag ParameterKey QUAL_DATA.SCIENCE_FLAG Description SCIENCE indicates if the data number was interpolated outside of the bounds calibrated on the ground (approximately 63000-8000). Structure Size 15752 10 Support SupportQuantity DataQuality Parameter #11 Name Coincident Flag ParameterKey QUAL_DATA.COINCIDENT_FLAG Description COINCIDENT returns 'COIN' or 'OK' for if another impact shares a timetag with the respective measurement. Structure Size 15752 10 Support SupportQuantity Other Parameter #12 Name ANA A Temperature Flag ParameterKey QUAL_DATA.ANA_A_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-7.1 degC high: 49.9 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #13 Name ANA B Temperature Flag ParameterKey QUAL_DATA.ANA_B_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-7.1 degC high: 49.9 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #14 Name DCDC Converter Temperature Flag ParameterKey QUAL_DATA.DCDC_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-30 degC high: 50 degC. Structure Size 15752 10 ValidMin -30 C ValidMax 50 C Support SupportQuantity Other Parameter #15 Name Field Programmable Gate Array Temperature Flag ParameterKey QUAL_DATA.FPGA_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-30 degC high: 50 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #16 Name PNL A Temperature Flag ParameterKey QUAL_DATA.PNL_A_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-120 degC high: 80 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #17 Name PNL B Temperature Flag ParameterKey QUAL_DATA.PNL_B_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-120 degC high: 80 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #18 Name PNL C Temperature Flag ParameterKey QUAL_DATA.PNL_C_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-120 degC high: 80 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #19 Name PNL D Temperature Flag ParameterKey QUAL_DATA.PNL_D_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-120 degC high: 80 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #20 Name P5 Volt Flag ParameterKey QUAL_DATA.P5_VOLT_FLAG Description Volt refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:4.9 high: 5 V. Structure Size 15752 10 Support SupportQuantity Other Parameter #21 Name M5 Volt Flag ParameterKey QUAL_DATA.M5_VOLT_FLAG Description Volt refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-5.4 high: -5.1 V. Structure Size 15752 10 Support SupportQuantity Other Parameter #22 Name Box Temperature Flag ParameterKey QUAL_DATA.SC_BOX_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-30 degC high: 50 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #23 Name PNL temperature Flag ParameterKey QUAL_DATA.SC_PNL_TEMP_FLAG Description Temp refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low:-120 degC high: 80 degC. Structure Size 15752 10 Support SupportQuantity Other Parameter #24 Name Volt Flag ParameterKey QUAL_DATA.SC_VOLT_FLAG Description Volt refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low: 36 V high: 36 V. Structure Size 15752 10 Support SupportQuantity Other Parameter #25 Name Current Flag ParameterKey QUAL_DATA.SC_CURR_FLAG Description Current refers to the safety limits on the electronic box components. Allowed values are 'OVER', 'OK', 'LOW', or 'NO_DATA.' Limits are: low: 120 mA high: 180 mA. Structure Size 15752 10 Support SupportQuantity Other Parameter #26 Name Truster Flag ParameterKey QUAL_DATA.THRUSTER_FLAG Description THRUSTER returns 'TF' or 'OK' for if a thruster firing occurred within 1 second of the respective measurement. Structure Size 15752 10 Support SupportQuantity Other Parameter #27 Name Flag ParameterKey QUAL_DATA.PART_ANG_FLAG Description PART_ANG quality flags return 'OVER', 'OK', or 'INVALID' for the angle limit of pi/4. PART_ANG is the angle of the particle's trajectory for a 1 micron particle with respect to zenith using a beta of 0.3 where beta is the ratio of radiation to gravitational force. Structure Size 15752 10 Support SupportQuantity Other Parameter #28 Name Ram Angle Flag ParameterKey QUAL_DATA.RAM_ANG_FLAG Description RAM_ANG quality flags return 'OVER', 'OK', or 'INVALID' for the angle limit of pi/4. RAM_ANG is the angle of the instrument's boresight with respect to the spacecraft's velocity. Structure Size 15752 10 Support SupportQuantity Other