Data Set Information
DATA_SET_NAME JUNO J JOVIAN AURORAL DISTRIBUTION MOMENTS V1.0
DATA_SET_ID JNO-J-JAD-5-MOMENTS-V1.0
NSSDC_DATA_SET_ID
DATA_SET_TERSE_DESCRIPTION
DATA_SET_DESCRIPTION This volume contains JADE moments data.
DATA_SET_RELEASE_DATE 2023-06-30T00:00:00.000Z
START_TIME 2015-03-31T12:35:45.004Z
STOP_TIME 2021-09-03T11:40:38.527Z
MISSION_NAME JUNO
MISSION_START_DATE 2011-08-05T12:00:00.000Z
MISSION_STOP_DATE N/A (ongoing)
TARGET_NAME JUPITER
TARGET_TYPE PLANET
INSTRUMENT_HOST_ID JNO
INSTRUMENT_NAME JOVIAN AURORAL PLASMA DISTRIBUTIONS EXPERIMENT
INSTRUMENT_ID JAD
INSTRUMENT_TYPE SPECTROMETER
NODE_NAME Planetary Plasma Interactions
ARCHIVE_STATUS
CONFIDENCE_LEVEL_NOTE Review : These data have been reviewed by the instrument team and are of the highest quality that can be generated at this time. After submission to the PDS, these data underwent the peer review process. Review liens were verified and the data certified on 4 Apr 2023. Limitations : Just because we can turn the handle and make moments, does not mean that we should, or that the results are physical. USE WITH EXTREME CAUTION. For heavy ions, we have to assume a singular mass to charge ratio (given in the records) to represent all the heavy ion species observed. We often start with 24amu/1.5q (:16) as a guess, but if you assume a different value that would alter the moments. Are the heavy ion mass and charge values given in the file records suitable for your region of interest? Due to background removal, density and/or temperature and/or pressure may be negative, which is unphysical and any such record should be filtered out (despite those technically being the moments of the data). The underlying data used to create the moments may have also been unsuitable, for instance at large distances the heavy ions may simple be at energies above those measured by JADE. Moments on the heavy ion JADE data in such situations would therefore be moments of noise, not signal. Moments calculations fundamentally expect the whole plasma distribution to be within the energy range of your instrument. If the plasma population extends above (or below) the instrument energy range, the moments equations can still be calculated, but now the density is a partial density, the velocity (ions only) is no longer correct, thus the pressure (and hence temperature) that use the velocity in their calculations is also incorrect. However, this is not obvious by simply examining the moments in these files. To use these moments correctly, one must compare the lower level data, i.e. counts/sec per look direction, to see if the plasma population of your interest is within the sensor range. If it is not, you should discard these moments from that time. In an ideal world, we would have already removed such unsuitable intervals, inc. negative moments, from these files. However, a ridiculously short deadline was given to create these files, so such time-consuming checks were impossible. Some results will be physical, some results will not be physical; the user should check and remove those.
CITATION_DESCRIPTION Allegrini, F., Wilson, R.J., Ebert, R.W., Hanley, J., JUNO J JOVIAN AURORAL DISTRIBUTION MOMENTS V1.0, JNO-J-JAD-5-MOMENTS-V1.0, NASA Planetary Data System, 2022. DOI: 10.17189/2fch-6v84
ABSTRACT_TEXT This data set consists of moments data calculated by the JADE (Jovian Auroral Distributions Experiment) on-board the Juno spacecraft.
PRODUCER_FULL_NAME ROBERT J WILSON
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