# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 55.201056 km # Date (UTC) = 2015-12-15T08:31:28.733 # Date (julian) = 2457371.85519367 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6530.9550 2.0046388e+10 0.17771624 0.045165620 129.67986 25.277972 6533.2866 1.8589913e+10 0.17956467 0.047641383 129.73272 25.168182 6535.6182 1.7155861e+10 0.17835920 0.047956107 129.78516 25.058392 6537.9499 1.5819965e+10 0.17796799 0.049133052 129.83395 24.948603 6540.2815 1.4631815e+10 0.17692074 0.050987101 129.88274 24.838813 6542.6132 1.3538090e+10 0.17445746 0.051235030 129.93417 24.726395 6544.9448 1.2544074e+10 0.17286283 0.052410793 129.98703 24.612540 6547.2764 1.1608333e+10 0.17074231 0.053392493 130.03914 24.499443 6549.6081 1.0729283e+10 0.16888586 0.054585973 130.08793 24.389639 6551.9397 9.9219752e+09 0.16731993 0.055565612 130.13673 24.279835 6554.2714 9.1940487e+09 0.16494090 0.054838075 130.18553 24.170041 6556.6030 8.5372949e+09 0.16273249 0.053924471 130.23433 24.060251 6558.9347 7.9335503e+09 0.15985970 0.052442862 130.28313 23.950461 6561.2663 7.3771591e+09 0.15671944 0.051241455 130.33193 23.840671 6563.5979 6.8576261e+09 0.15348919 0.049236687 130.38072 23.730882 6565.9296 6.3856632e+09 0.15023335 0.047262844 130.42951 23.621093 6568.2612 5.9568843e+09 0.14761713 0.045531535 130.47831 23.511304 6570.5929 5.5630183e+09 0.14468259 0.044671924 130.52710 23.401510 6572.9245 5.2031098e+09 0.14158267 0.043700714 130.57591 23.291705 6575.2561 4.8675671e+09 0.13844575 0.042117710 130.62472 23.181901 6577.5878 4.5579960e+09 0.13554120 0.039297096 130.67351 23.072110 6579.9194 4.2827848e+09 0.13306128 0.036565045 130.72230 22.962320 6582.2511 4.0262423e+09 0.13085386 0.035225471 130.76934 22.854288 6584.5827 3.7916866e+09 0.12883140 0.034198084 130.81407 22.748565 6586.9144 3.5642178e+09 0.12695364 0.033159476 130.85880 22.642842 6589.2460 3.3497611e+09 0.12503040 0.032557937 130.90748 22.533162 6591.5776 3.1574942e+09 0.12257871 0.028550110 130.95628 22.423373 6593.9093 2.9793389e+09 0.12017723 0.026256864 131.00508 22.313576 6596.2409 2.8179416e+09 0.11731256 0.025726178 131.05388 22.203772 6598.5726 2.6685255e+09 0.11524614 0.025133802 131.10246 22.093969 6600.9042 2.5201605e+09 0.11485593 0.026848758 131.14719 21.984179 6603.2358 2.3810996e+09 0.11362476 0.026523652 131.19192 21.874389 6605.5675 2.2507679e+09 0.11275461 0.027141123 131.23907 21.764600 6607.8991 2.1305152e+09 0.11047775 0.023931547 131.28787 21.654810 6610.2308 2.0213877e+09 0.10699359 0.024223478 131.33610 21.545575 6612.5624 1.9210586e+09 0.10465246 0.023900536 131.38083 21.439852 6614.8941 1.8277313e+09 0.10310626 0.023324522 131.42556 21.334128 6617.2257 1.7414394e+09 0.10128177 0.023514079 131.47030 21.225642 6619.5573 1.6603929e+09 0.10011992 0.024660391 131.51503 21.115839 6621.8890 1.5766447e+09 0.098463983 0.024794790 131.56099 21.003042 6624.2206 1.4880245e+09 0.096208119 0.024980409 131.61131 20.879527 6626.5523 1.4042553e+09 0.094524240 0.025887265 131.66158 20.756586 6628.8839 1.3268874e+09 0.093252737 0.026061970 131.71037 20.650862 6631.2155 1.2582312e+09 0.091841620 0.025952661 131.75917 20.545139 6633.5472 1.1972537e+09 0.090702598 0.026247787 131.80563 20.437086 6635.8788 1.1378042e+09 0.089378929 0.026531582 131.85036 20.327296 6638.2105 1.0841166e+09 0.088516625 0.025662472 131.89509 20.217968 6640.5421 1.0382456e+09 0.088806853 0.025204323 131.93983 20.112230 6642.8738 9.9488433e+08 0.088703568 0.025187452 131.98456 20.006492 6645.2054 9.5355110e+08 0.087717084 0.025547906 132.02929 19.898101 6647.5370 9.1614671e+08 0.086562566 0.026720534 132.07402 19.788313 6649.8687 8.7506648e+08 0.085746263 0.026436251 132.11895 19.676734 6652.2003 8.3366897e+08 0.085243021 0.027305638 132.16470 19.557793 6654.5320 7.8660067e+08 0.084428448 0.027809603 132.21044 19.438960 6656.8636 7.4474869e+08 0.082500983 0.028781401 132.25517 19.329151 6659.1952 7.1325317e+08 0.080831732 0.031793869 132.29990 19.219362 6661.5269 6.8576646e+08 0.079322373 0.032803307 132.34462 19.111810 6663.8585 6.5879826e+08 0.077773794 0.032245292 132.38935 19.006086 6666.1902 6.2603847e+08 0.077720695 0.026945653 132.43407 18.899991 6668.5218 5.9854307e+08 0.076593320 0.027932545 132.47881 18.790186 6670.8535 5.7730100e+08 0.076218060 0.026933239 132.52354 18.680382 6673.1851 5.5671288e+08 0.075583922 0.027736047 132.56892 18.564802 6675.5167 5.3385056e+08 0.073469690 0.030788106 132.61467 18.445861 6677.8484 5.0384326e+08 0.072003242 0.031152153 132.65996 18.332819 6680.1800 4.7849244e+08 0.072332000 0.029480291 132.70469 18.227097 6682.5117 4.6083519e+08 0.073215420 0.030815475 132.74942 18.121375 6684.8433 4.4566264e+08 0.073339807 0.032696886 132.79515 17.998090 6687.1749 4.2767849e+08 0.071692553 0.034245329 132.84090 17.874574 6689.5066 4.0501635e+08 0.069264376 0.033560011 132.88584 17.765311 6691.8382 3.8524455e+08 0.068351256 0.032803495 132.93057 17.659587 6694.1699 3.7137822e+08 0.067450623 0.031022939 132.97391 17.553859 6696.5015 3.5681516e+08 0.067277783 0.029884155 133.01457 17.448122 6698.8332 3.4375120e+08 0.066072816 0.031361422 133.05523 17.342385 6701.1648 3.2672601e+08 0.064224338 0.031651254 133.10442 17.224991 6703.4964 3.0856737e+08 0.064161809 0.034917489 133.15475 17.106050 6705.8281 2.9325178e+08 0.064246703 0.038140770 133.19834 16.996321 6708.1597 2.8016723e+08 0.063853597 0.040217512 133.23900 16.890598 6710.4914 2.7240938e+08 0.062294094 0.040592674 133.28087 16.781733 6712.8230 2.6082417e+08 0.060080019 0.043358010 133.32662 16.662792 6715.1546 2.4715826e+08 0.057927403 0.047536760 133.37236 16.543851 6717.4863 2.3524437e+08 0.055665021 0.049844189 133.41811 16.424911 6719.8179 2.2693309e+08 0.053965534 0.050592743 133.46386 16.305971 6722.1496 2.1999897e+08 0.053850512 0.050420291 133.50521 16.198461 6724.4812 2.0828447e+08 0.050545868 0.045908195 133.54588 16.092724 6726.8129 1.9898959e+08 0.047487857 0.040958699 133.59048 15.981616 6729.1445 1.9007716e+08 0.046901269 0.040949115 133.64079 15.862675 6731.4761 1.8436880e+08 0.044866911 0.042697634 133.68897 15.746653 6733.8078 1.7859058e+08 0.043578121 0.048309998 133.72964 15.640930 6736.1394 1.7122017e+08 0.045176307 0.050882110 133.77030 15.535206 6738.4711 1.6846876e+08 0.046288715 0.059914529 133.81484 15.419416 6740.8027 1.6318707e+08 0.045391308 0.065421651 133.86059 15.300476 6743.1343 1.5788302e+08 0.041521649 0.071953761 133.90634 15.181535 6745.4660 1.5098254e+08 0.038505851 0.078762785 133.95208 15.062595 6747.7976 1.4322771e+08 0.034147294 0.067086567 133.99604 14.943654 6750.1293 1.3433127e+08 0.031437390 0.072224874 134.03722 14.824714 6752.4609 1.2624029e+08 0.028538657 0.073601110 134.07932 14.705773 6754.7926 1.1875426e+08 0.026816150 0.074938938 134.12507 14.586832 6757.1242 1.1381469e+08 0.023994557 0.076363143 134.17072 14.468127 6759.4558 1.1481902e+08 0.025027742 0.075929957 134.21139 14.362388 6761.7875 1.1293554e+08 0.027960024 0.078033286 134.25206 14.256651 6764.1191 1.1159350e+08 0.031700739 0.079488992 134.29557 14.146092 6766.4508 1.0659765e+08 0.032798929 0.080733389 134.34131 14.031726 6768.7824 99032937. 0.028236628 0.083671315 134.38535 13.915655 6771.1141 94393378. 0.023772503 0.089581761 134.42652 13.796714 6773.4457 87760649. 0.019400000 0.095237018 134.46855 13.677773 6775.7773 85171728. 0.015147370 0.10089227 134.51430 13.558833 6778.1090 80549333. 0.010829570 0.10654753 134.56004 13.439892 6780.4406 76534821. 0.0065405583 0.11220279 134.60579 13.320951 6782.7723 75295673. 0.0023915548 0.11785804 134.65154 13.202011 6785.1039 74048351. -0.0017432188 0.12351330 134.69356 13.086798 6787.4355 74491212. -0.0057964241 0.12916855 134.73473 12.972432 6789.7672 72837180. -0.0099762976 0.13482381 134.78289 12.844500 6792.0988 68317561. -0.014353681 0.14047907 134.83517 12.708565 6794.4305 63766058. -0.018821977 0.14613432 134.87950 12.588080 6796.7621 58298831. -0.023499070 0.15178958 134.92067 12.473714 6799.0938 58613329. -0.027834707 0.15744484 134.96426 12.356922 6801.4254 55867179. -0.032636131 0.16310009 135.01000 12.237982 6803.7570 54431695. -0.037616145 0.16875535 135.05417 12.120616 6806.0887 53837912. -0.042986171 0.17441060 135.09535 12.006250 6808.4203 48608566. -0.050276572 0.18006586 135.13829 11.888467 6810.7520 49198825. -0.059345539 0.18572112 135.19056 11.752532 6813.0836 46597840. -0.095450321 0.19137637 135.24012 11.621893 6815.4152 44898060. -0.075046133 0.19703163 135.28130 11.507510 6817.7469 44796392. -0.021667063 0.20268689 135.32248 11.392853