Monthly Normalized MAVEN Data (2014-2021)

<p>These data were obtained from the magnetometer (MAG), Neutral Gas and Ion Mass Spectrometer (NGIMS), and Solar Wind Ion Analyzer (SWIA) onboard the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft.&nbsp; These two data sets were derived from these three instruments&#39; data products and utilized in the article <strong>Influence of Magnetic Fields on Precipitating Solar Wind Hydrogen at Mars</strong>,&nbsp;which we plan to submit to Geophysical Research Letters.</p> <p>The backscattered and downward propagating penetrating proton data have been separated into two data files titled respectively.&nbsp; The contents of each file are as follows:</p> <p>1.&nbsp; Time [s]:&nbsp;&nbsp;epoch time (seconds since Jan. 1, 1970) for each penetrating proton measurement</p> <p>2.&nbsp; Orbit [#]:&nbsp; MAVEN&#39;s orbit number</p> <p>3.&nbsp; LSM [degrees]:&nbsp; Martian solar longitude</p> <p>4.&nbsp; Flux&nbsp;&nbsp;[eV/(eV s sr cm^2)]:&nbsp; peak angle averaged differential energy flux for each 4-s spectrum in electronvolt&nbsp;per electronvolt&nbsp;x second&nbsp;x steradian&nbsp;x square centimeters.</p> <p>5.&nbsp; Normalized Flux:&nbsp; monthly normalized peak flux (unitless)</p> <p>6.&nbsp; Energy [eV]:&nbsp; energy at which peak flux occurred for each 4-s spectrum found from Gaussian fit in electronvolts</p> <p>7.&nbsp; FWHM [eV]:&nbsp; full width at half maximum of 4-s spectrum found from Gaussian fit in electronvolts</p> <p>8.&nbsp; Altitude [km]:&nbsp; spacecraft altitude in kilometers&nbsp;</p> <p>9.&nbsp; SZA [degrees]:&nbsp; solar zenith angle in degrees&nbsp;</p> <p>10.&nbsp; X_MSO [km]:&nbsp; X position of MAVEN in the Mars-Sun-Orbit (MSO) coordinate system in kilometers</p> <p>11.&nbsp; Y_MSO [km]:&nbsp; Y position of MAVEN in the MSO coordinate system in kilometers</p> <p>12.&nbsp; Z_MSO [km]:&nbsp; Z position of MAVEN in the MSO coordinate system in kilometers</p> <p>13.&nbsp; Latitude [degrees]:&nbsp; Martian planetary latitude</p> <p>14.&nbsp; Longitude [degrees]:&nbsp; Martian planetary longitude</p> <p>15.&nbsp; Bx [nT]:&nbsp; X component of magnetic field measured by MAG in MSO coordinates in nanotesla&nbsp;</p> <p>16.&nbsp; By [nT]:&nbsp; Y component of magnetic field measured by MAG in MSO coordinates in nanotesla</p> <p>17.&nbsp; Bz [nT]:&nbsp; Z component of magnetic field measured by MAG in MSO coordinates in nanotesla</p> <p>18.&nbsp; Elevation Angle [degrees]:&nbsp; local magnetic field elevation angle measured relative to a vector tangent to the Martian surface during each penetrating proton measurement.&nbsp; 90 degree elevation angle corresponds to radial configurations while 0 degree elevation angle corresponds to horizontal configurations.</p> <p>19.&nbsp; Column Density [cm^-2]:&nbsp; CO₂&nbsp;column density derived from NGIMS measurements in inverse square centimeters.&nbsp; All NaN values were used to fill for times during which NGIMS inbound verified data were not available, and the column density could not be determined.</p>