AndreaBozzo/ceres-open-data-index huggingface dataset:
MMS 3 Digital Signal Processor (DSP) Double Probe (ADP, SDP), Electric Field Power Spectral Density, Level 2 (L2), Slow Mode, 16 s Data

The MMS electric field power spectral density (EPSD) is computed onboard by the Digital Signal Processor (DSP). The fast Fourier transform (FFT) calculation is performed on a digitized version of analog signals from the Axial Double Probe (ADP) and Spin-Plane Double Probe (SDP). This data product is computed in space from individual components that are not synchronized to the 1 second pulse. Therefore, the timing between channels can be inaccurate by a fraction of a second. The samples times are interval start times taken from the x component. The spectra are calculated via a 1024-point FFT algorithm on piecewise continuous sets of waveform data. Nine signals can be processed simultaneously. Six of the twelve DC-coupled E, DC-coupled V, or SCM signals (16384 samples/s) are selected for spectral processing at 100% duty cycle. In addition, the three AC-coupled signals (262,144 kS/s) each can be processed at 6.25% duty cycle. Each of the nine signals has 16, 1024-point FFT operations every second; the field-programmable gate array (FPGA) performs 144 FFTs per second. The FFT is performed by an arithmetic logic unit (ALU), which is controlled by a state machine. Both are hard-coded into the FPGA. The operation starts by applying a 1024-point Hanning window onto a waveform. Next, an FFT is implemented. The FFT is broken into a series of "butterfly" operations performed by the ALU. The result has real and imaginary data. Power spectra are calculated by taking the sum of squares of real and imaginary values (the ALU includes a multiplier), which produces a power spectrum with 512 frequency bins. The frequency bins are then combined to give pseudo-logarithmic frequency spacing (del f)/f. The spectra are reduced to 56 frequency bins with (del f)/f between 6% and 12% when possible. Narrow-band emissions can be fit to an accuracy of (del f)/f ~3%, allowing for an accurate determination of plasma density. The spectra can be averaged in time. The fastest reporting rate of any signal is 16 spectra per second. Reporting rates can be as slow a one spectra every 16 s (averaging 256 spectra). The averaging process has 48-bit accuracy to maximize the dynamic range. The amplitudes undergo a pseudo-logarithmic compression to an 8-bit number representing over 120 dB of dynamic range at ~5% precision.

Tags: electricfield, waves-passive
Organization: National Aeronautics and Space Administration
ISIS-2 Topside Sounder Average Ionogram over Fairbanks, AK: ULA, Latitude 65, Longitude 212

These Ionograms were digitized from the original ISIS-2 7-Track Analog Telemetry Tapes using the Facilities of the former Data Evaluation Laboratory at the NASA/GSFC. This Data Restoration Project is headed by Dr. R.F. Benson (NASA/GSFC). Ionograms were digitized at the Rate of 40,000 16-bit samples/s. This Sample Rate is higher than the Nyquist Frequency of 30 kHz. The Sample Frequency of 40 kHz provides a Measurement every 25 &#181;s corresponding to an Apparent Range Interval equal to 3.75 km from c*t/2, where c is the Speed of Light. Ionograms with this Sample Rate are designated as &apos;Full&apos; Ionograms because they have the full 3.75 km Apparent-Range Resolution. The Ionograms used for most Analyses, and those available from CDAWeb, were produced by averaging every four Samples of the Sounder-Receiver Video Amplitude Output to yield an average Value every 100 &#181;s corresponding to an Apparent-Range Resolution of 15 km. These Ionogram Files are referred to as &apos;Average&apos; Files with Standard Resolution. Each Ionogram consists of a Fixed-Frequency Portion and a Swept-Frequency Portion. The Time Resolution between Ionograms is typically 14 or 22 s depending on the Frequency Sweep Range.

Tags: auroral-kilometric-radiation-akr, ducted-echoes, field-aligned-irregularities-fai, ground-echoes, ground-reflections, ionospheric-echoes, ionospheric-reflections, plasma-resonance, plasma-waves, solar-type-iii-bursts, spectrum, swept-frequency-sounder, topside-ionosphere, topside-sounder, upper-hybrid-noise-band, wave-scattering, waves-active-ionogram
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P MIRO 4 ESC1 V2.0

This data set contains Spectroscopic and Continuum level 4 data, in the form of table files, taken during the ROSETTA ESCORT 1 phase of the Rosetta mission to comet 67P/CHURYUMOV-GERASIMENKO by the MIRO instrument. The major updates with this version (V2.0) are the addition of a Level 4 continuum data product and the elimination of separate geometry files for the spectroscopic data.

Tags: __
Organization: National Aeronautics and Space Administration
ISIS-2 Topside Sounder Average Ionogram over Brazzavillle, Congo: BRZ, Latitude -4, Longitude 15

These Ionograms were digitized from the original ISIS-2 7-Track Analog Telemetry Tapes using the Facilities of the former Data Evaluation Laboratory at the NASA/GSFC. This Data Restoration Project is headed by Dr. R.F. Benson (NASA/GSFC). Ionograms were digitized at the Rate of 40,000 16-bit samples/s. This Sample Rate is higher than the Nyquist Frequency of 30 kHz. The Sample Frequency of 40 kHz provides a Measurement every 25 &#181;s corresponding to an Apparent Range Interval equal to 3.75 km from c*t/2, where c is the Speed of Light. Ionograms with this Sample Rate are designated as &apos;Full&apos; Ionograms because they have the full 3.75 km Apparent-Range Resolution. The Ionograms used for most Analyses, and those available from CDAWeb, were produced by averaging every four Samples of the Sounder-Receiver Video Amplitude Output to yield an average Value every 100 &#181;s corresponding to an Apparent-Range Resolution of 15 km. These Ionogram Files are referred to as &apos;Average&apos; Files with Standard Resolution. Each Ionogram consists of a Fixed-Frequency Portion and a Swept-Frequency Portion. The Time Resolution between Ionograms is typically 14 or 22 s depending on the Frequency Sweep Range.

Tags: auroral-kilometric-radiation-akr, ducted-echoes, field-aligned-irregularities-fai, ground-echoes, ground-reflections, ionospheric-echoes, ionospheric-reflections, plasma-resonance, plasma-waves, solar-type-iii-bursts, spectrum, swept-frequency-sounder, topside-ionosphere, topside-sounder, upper-hybrid-noise-band, wave-scattering, waves-active-ionogram
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 PRELANDING 0242 V1.0

This is a Rosetta Radio Science data set, collected during the PRELANDING phase 2014-01-21 to 2014-11-18. It is a Global Gravity measurement at the comet 67P and covers the time 2014-08-25T22:42:05.000 to 2014-08-26T00:42:04.000.

Tags: __
Organization: National Aeronautics and Space Administration
MMS 3 Digital Signal Processor (DSP) Double Probe (ADP, SDP), Electric Field Power Spectral Density, Level 2 (L2), Fast Mode, 2 s Data

The MMS electric field power spectral density (EPSD) is computed onboard by the Digital Signal Processor (DSP). The fast Fourier transform (FFT) calculation is performed on a digitized version of analog signals from the Axial Double Probe (ADP) and Spin-Plane Double Probe (SDP). This data product is computed in space from individual components that are not synchronized to the 1 second pulse. Therefore, the timing between channels can be inaccurate by a fraction of a second. The samples times are interval start times taken from the x component. The spectra are calculated via a 1024-point FFT algorithm on piecewise continuous sets of waveform data. Nine signals can be processed simultaneously. Six of the twelve DC-coupled E, DC-coupled V, or SCM signals (16384 samples/s) are selected for spectral processing at 100% duty cycle. In addition, the three AC-coupled signals (262,144 kS/s) each can be processed at 6.25% duty cycle. Each of the nine signals has 16, 1024-point FFT operations every second; the field-programmable gate array (FPGA) performs 144 FFTs per second. The FFT is performed by an arithmetic logic unit (ALU), which is controlled by a state machine. Both are hard-coded into the FPGA. The operation starts by applying a 1024-point Hanning window onto a waveform. Next, an FFT is implemented. The FFT is broken into a series of "butterfly" operations performed by the ALU. The result has real and imaginary data. Power spectra are calculated by taking the sum of squares of real and imaginary values (the ALU includes a multiplier), which produces a power spectrum with 512 frequency bins. The frequency bins are then combined to give pseudo-logarithmic frequency spacing (del f)/f. The spectra are reduced to 56 frequency bins with (del f)/f between 6% and 12% when possible. Narrow-band emissions can be fit to an accuracy of (del f)/f ~3%, allowing for an accurate determination of plasma density. The spectra can be averaged in time. The fastest reporting rate of any signal is 16 spectra per second. Reporting rates can be as slow a one spectra every 16 s (averaging 256 spectra). The averaging process has 48-bit accuracy to maximize the dynamic range. The amplitudes undergo a pseudo-logarithmic compression to an 8-bit number representing over 120 dB of dynamic range at ~5% precision.

Tags: electricfield, waves-passive
Organization: National Aeronautics and Space Administration
MARS EXPRESS MARS MRS 1/2/3 EXTENDED MISSION 7 4168 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2019-01-01 to 2020-12-31. It is a Occultation measurement and covers the time 2020-12-16T13:14:47.000 to 2020-12-16T13:36:55.250.

Tags: __
Organization: National Aeronautics and Space Administration
ISIS-2 Topside Sounder Average Ionogram over Johannesburg, South Africa: BUR, Latitude -26, Longitude 28

These Ionograms were digitized from the original ISIS-2 7-Track Analog Telemetry Tapes using the Facilities of the former Data Evaluation Laboratory at the NASA/GSFC. This Data Restoration Project is headed by Dr. R.F. Benson (NASA/GSFC). Ionograms were digitized at the Rate of 40,000 16-bit samples/s. This Sample Rate is higher than the Nyquist Frequency of 30 kHz. The Sample Frequency of 40 kHz provides a Measurement every 25 &#181;s corresponding to an Apparent Range Interval equal to 3.75 km from c*t/2, where c is the Speed of Light. Ionograms with this Sample Rate are designated as &apos;Full&apos; Ionograms because they have the full 3.75 km Apparent-Range Resolution. The Ionograms used for most Analyses, and those available from CDAWeb, were produced by averaging every four Samples of the Sounder-Receiver Video Amplitude Output to yield an average Value every 100 &#181;s corresponding to an Apparent-Range Resolution of 15 km. These Ionogram Files are referred to as &apos;Average&apos; Files with Standard Resolution. Each Ionogram consists of a Fixed-Frequency Portion and a Swept-Frequency Portion. The Time Resolution between Ionograms is typically 14 or 22 s depending on the Frequency Sweep Range.

Tags: auroral-kilometric-radiation-akr, ducted-echoes, field-aligned-irregularities-fai, ground-echoes, ground-reflections, ionospheric-echoes, ionospheric-reflections, plasma-resonance, plasma-waves, solar-type-iii-bursts, spectrum, swept-frequency-sounder, topside-ionosphere, topside-sounder, upper-hybrid-noise-band, wave-scattering, waves-active-ionogram
Organization: National Aeronautics and Space Administration
MARS EXPRESS PHOBOS MRS 1/2/3 EXTENDED MISSION 4 3619 V1.0

This is a Mars Express Radio Science data set, collected during the extended mission phase 2013-01-01 to 2014-12-31. It is a Phobos Gravity measurement and covers the time 2013-12-28T18:00:15.000 to 2013-12-29T00:27:25.500.

Tags: __
Organization: National Aeronautics and Space Administration
MMS 3 Digital Signal Processor (DSP) Search Coil Magnetometer (SCM), Magnetic Field Power Spectral Density, Level 2 (L2), Fast Mode, 2 s Data

The MMS magnetic field power spectral density (BPSD) is computed onboard by the Digital Signal Processor (DSP). The fast Fourier transform (FFT) calculation is performed on a digitized version of analog signals from the Search Coil Magnetometer (SCM) in the SCM123 coordinate system, see SCM data product guide for details, https://lasp.colorado.edu/mms/sdc/public/datasets/fields/. This data product is computed in space from individual components that are not synchronized to the 1 second pulse. Therefore, the timing between channels can be inaccurate by a fraction of a second. The samples times are interval start times taken from the x component. The spectra are calculated via a 1024-point FFT algorithm on piecewise continuous sets of waveform data. Nine signals can be processed simultaneously. Six of the twelve DC-coupled E, DC-coupled V, or SCM signals (16384 samples/s) are selected for spectral processing at 100% duty cycle. In addition, the three AC-coupled signals (262,144 kS/s) each can be processed at 6.25% duty cycle. Each of the nine signals has 16, 1024-point FFT operations every second; the field-programmable gate array (FPGA) performs 144 FFTs per second. The FFT is performed by an arithmetic logic unit (ALU), which is controlled by a state machine. Both are hard-coded into the FPGA. The operation starts by applying a 1024-point Hanning window onto a waveform. Next, an FFT is implemented. The FFT is broken into a series of "butterfly" operations performed by the ALU. The result has real and imaginary data. Power spectra are calculated by taking the sum of squares of real and imaginary values (the ALU includes a multiplier), which produces a power spectrum with 512 frequency bins. The frequency bins are then combined to give pseudo-logarithmic frequency spacing (del f)/f. The spectra are reduced to 88 frequency bins with (del f)/f between 6% and 12% when possible. Narrow-band emissions can be fit to an accuracy of (del f)/f ~3%, allowing for an accurate determination of plasma density. The spectra can be averaged in time. The fastest reporting rate of any signal is 16 spectra per second. Reporting rates can be as slow a one spectra every 16 s (averaging 256 spectra). The DSP and SCM instrument papers can be found at https://link.springer.com/article/10.1007/s11214-014-0115-x and https://link.springer.com/article/10.1007/s11214-014-0096-9, respectively. The DSP and SCM data product guides can be found at https://lasp.colorado.edu/mms/sdc/public/datasets/fields/.

Tags: magneticfield, waves-passive
Organization: National Aeronautics and Space Administration
ISIS-1 Topside Sounder Average Ionogram over Quito, Equador, QUI, Version 2, Latitude -1°, Longitude 281°, 29 s Data

This Ionogram was digitized from the original ISIS 1 Analog Telemetry Data on 7-Track Tape using the Facilities of the Data Evaluation Laboratory at NASA GSFC, Code 500. This Data Restoration Project is headed by Dr. R.F. Benson, NASA GSFC, Code 692. Ionograms were digitized at the Rate of 40,000 16-bit samples/s. This Sample Rate is higher than the Nyquist Frequency of 30 kHz. The Sample Frequency of 40 kHz provides a Measurement every 25 ms corresponding to an Apparent Range Interval of c*t/2, where c is the Speed of Light, or 3.747 km. Each Ionogram consists of a Fixed Frequency Portion and a Swept Frequency Portion. The Time Resolution is typically 29 s.\n\nThis data product has been produced as part of the ISIS 1 topside digital ionogram database enhancement project, and this data product is one in the set of the Average Ionogram, version 2, av2, data products. Version 2 ISIS-I topside digital ionograms have been produced from the midlatitude Ottawa, OTT, the low-latitude Quito, and the high-latitude University of Alaska, Fairbanks telemetry stations. Digital ionograms from the midlatitude Santiago telemetry station are in production as of 2020-04-22. A major goal of the enhancement project is to produce as many topside soundings of ionospheric Ne(h) as possible so as to expand the Ne(h) profile coverage in latitude, longitude, and epoch. Original, version 1, files designated as 'av' for average files where the apparent-range information was averaged to yield 15-km resolution are also available. Both versions, av and av2, have good ionogram data, but the lack of proper frame-sync detection in the av files often prevented the determination of frequency information. After correcting the frame-sync detection, it is possible to add the correct frequency information allowing the ionograms to be processed automatically, by software such as TOPIST, to yield topside Ne(h).

Tags: auroral-kilometric-radiation-akr, ducted-echoes, field-aligned-irregularities-fai, ground-echoes, ground-reflections, ionospheric-echoes, ionospheric-reflections, plasma-resonance, plasma-waves, solar-type-iii-bursts, spectrum, swept-frequency-sounder, topside-ionosphere, topside-sounder, upper-hybrid-noise-band, wave-scattering, waves-active-ionogram
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P RSI 1/2/3 COMET ESCORT 3 1024 V1.0

This is a Rosetta Radio Science data set, collected during the COMET ESCORT 3 phase 2015-07-01 to 2015-10-21. It is a Global Gravity measurement at the comet 67P and covers the time 2015-09-10T21:23:10.000 to 2015-09-11T05:26:02.500.

Tags: __
Organization: National Aeronautics and Space Administration
MMS 3 Hot Plasma Composition Analyzer (HPCA) Ions, Level 2 (L2), Survey Mode, 0.625 s Data

Hot Plasma Composition Analyzer (HPCA) Ions, Level 2, Survey, 0.625 s Data. The MMS HPCA instruments measure the energy and composition of magnetospheric plasmas in the energy range from 1 eV to 40 keV. An electrostatic energy analyzer (ESA) that is optically coupled to a carbon-foil based Time-of-Flight (TOF) section comprises each HPCA. The basic HPCA data product is an array of counts for 5 ion species, at 63 energies, for each of 16 elevation anodes. Sixteen basic products, also called azimuths, are acquired every 0.625 s; half a spacecraft spin period nominally has 16 azimuths. The five ion species are protons (H+), alpha particles (He++), helium ions (He+), singly charged Oxygen (O+), and background counts.

Tags: energeticparticles, magneticfield
Organization: National Aeronautics and Space Administration
ROSETTA-ORBITER 67P NAVCAM 2 ROSETTA EXTENSION 2 MTP030 V1.1

This dataset contains ROSETTA NAVCAM RAW DATA of the Extension 2 Phase from 31st May 2016 to 28th June 2016 when at the vicinity of target 67P/CG. This data set V1.1 supersedes the V1.0. It includes updates of the Browse images, clarification of calibration target, document updates and resolve other minor outstanding errata.

Tags: __
Organization: National Aeronautics and Space Administration
ISIS-2 Topside Sounder Average Ionogram over Kashima, Japan: KSH, Latitude 36, Longitude 141

These Ionograms were digitized from the original ISIS-2 7-Track Analog Telemetry Tapes using the Facilities of the former Data Evaluation Laboratory at the NASA/GSFC. This Data Restoration Project is headed by Dr. R.F. Benson (NASA/GSFC). Ionograms were digitized at the Rate of 40,000 16-bit samples/s. This Sample Rate is higher than the Nyquist Frequency of 30 kHz. The Sample Frequency of 40 kHz provides a Measurement every 25 &#181;s corresponding to an Apparent Range Interval equal to 3.75 km from c*t/2, where c is the Speed of Light. Ionograms with this Sample Rate are designated as &apos;Full&apos; Ionograms because they have the full 3.75 km Apparent-Range Resolution. The Ionograms used for most Analyses, and those available from CDAWeb, were produced by averaging every four Samples of the Sounder-Receiver Video Amplitude Output to yield an average Value every 100 &#181;s corresponding to an Apparent-Range Resolution of 15 km. These Ionogram Files are referred to as &apos;Average&apos; Files with Standard Resolution. Each Ionogram consists of a Fixed-Frequency Portion and a Swept-Frequency Portion. The Time Resolution between Ionograms is typically 14 or 22 s depending on the Frequency Sweep Range.

Tags: auroral-kilometric-radiation-akr, ducted-echoes, field-aligned-irregularities-fai, ground-echoes, ground-reflections, ionospheric-echoes, ionospheric-reflections, plasma-resonance, plasma-waves, solar-type-iii-bursts, spectrum, swept-frequency-sounder, topside-ionosphere, topside-sounder, upper-hybrid-noise-band, wave-scattering, waves-active-ionogram
Organization: National Aeronautics and Space Administration
MMS 3 Search Coil Magnetometer (SCM) AC Magnetic Field Level 2 (L2), High Speed Burst Mode, 16384 Sample/s Data

Search Coil Magnetometer (SCM) AC Magnetic Field (16384 samples/s), Level 2, High Speed Burst Mode Data. The tri-axial Search-Coil Magnetometer with its associated preamplifier measures three-dimensional magnetic field fluctuations. The analog magnetic waveforms measured by the SCM are digitized and processed inside the Digital Signal Processor (DSP), collected and stored by the Central Instrument Data Processor (CIDP) via the Fields Central Electronics Box (CEB). Prior to launch, all SCM Flight models were calibrated by LPP team members at the National Magnetic Observatory, Chambon-la-Foret (Orleans). Once per orbit, each SCM transfer function is checked thanks to the onboard calibration signal provided by the DSP. The SCM is operated for the entire MMS orbit in survey mode. Within scientific Regions Of Interest (ROI), burst mode data are also acquired as well as high speed burst mode data. This SCM data set corresponds to the AC magnetic field waveforms in nanoTesla and in the GSE frame. The SCM instrument paper for SCM can be found at http://link.springer.com/article/10.1007/s11214-014-0096-9 and the SCM data product guide at https://lasp.colorado.edu/mms/sdc/public/datasets/fields/.

Tags: magneticfield, waves-passive
Organization: National Aeronautics and Space Administration
Alaska's Changing YK Delta: Knowledge Exchange between Elders and Geoscientists, 2018

This dataset provides a booklet documenting the discussions and outcomes from a knowledge-exchange meeting with Yup'ik elders from the Yukon-Kuskokwim Delta (YKD), western Alaska, community members, and natural scientist to discuss landscape and weather changes that have been observed in their homelands. The meeting was held during November 14-16, 2018. Yup'ik participants represented several YKD villages that occupy very different biophysical environments, and they have lifelong perspectives of environmental conditions and change that predate the era of Earth-observing satellites by many decades. Nearly 16 hours of discussion and testimonials from YKD elders were recorded during the meeting. The booklet is structured according to the environmental change processes that were discussed (e.g., coastal flooding, permafrost thaw, shrub expansion, climate change) and includes narrative summaries, quotations from participants, graphical illustrations, and examples of the field- and remote-sensing-based scientific findings, and map products developed as part of the larger ABoVE project.

Tags: earth-science-biospheric-indicators-climate-indicators-phenological-changes-plant-phenological, earth-science-biospheric-indicators-climate-indicators-range-changes, earth-science-cryospheric-indicators-climate-indicators-river-ice-depth-extent, earth-science-ecological-dynamics-biosphere-species-population-interactions-use-feeding-habitat, earth-science-environmental-impacts-human-dimensions-conservation, earth-science-human-settlements-human-dimensions-rural-areas, earth-science-population-human-dimensions-vulnerable-populations, earth-science-snow-ice-cryosphere-snow-depth, earth-science-terrestrial-hydrosphere-indicators-climate-indicators-river-lake-ice-breakup, earth-science-vegetation-biosphere-vegetation-species
Organization: National Aeronautics and Space Administration