# # 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 = 34.888327 km # Date (UTC) = 2011-01-18T08:20:43.826 # Date (julian) = 2455579.84772947 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.7986 1.7153906e+11 0.056469721 0.032825574 -9.8790844 46.427889 6503.9469 1.3748829e+11 0.065491959 0.033473374 -9.9802424 46.293012 6506.0951 1.1233105e+11 0.074658440 0.034121174 -10.081400 46.161058 6508.2434 9.3100254e+10 0.084020475 0.034768974 -10.182558 46.030997 6510.3916 7.8846284e+10 0.093707835 0.035416774 -10.283716 45.900936 6512.5399 6.9338543e+10 0.10398935 0.036064575 -10.384875 45.770876 6514.6881 6.0461930e+10 0.11449218 0.036712375 -10.483841 45.640815 6516.8364 5.2934168e+10 0.12535208 0.037360175 -10.580183 45.510754 6518.9846 4.6699377e+10 0.13662831 0.038007975 -10.678350 45.380693 6521.1329 4.1441289e+10 0.14830074 0.038655775 -10.779508 45.250633 6523.2811 3.6936103e+10 0.15670647 0.039248793 -10.879206 45.120572 6525.4294 3.3151776e+10 0.16283240 0.039733209 -10.975547 44.990511 6527.5776 2.9889684e+10 0.16831435 0.041135850 -11.070794 44.859357 6529.7259 2.7104355e+10 0.17291501 0.043392080 -11.162318 44.724479 6531.8742 2.4433399e+10 0.17660843 0.046501021 -11.256999 44.587051 6534.0224 2.1757354e+10 0.17826059 0.047950825 -11.369400 44.435310 6536.1707 1.9296089e+10 0.17828020 0.047943196 -11.474037 44.291631 6538.3189 1.7161403e+10 0.17904992 0.049311976 -11.565561 44.161571 6540.4672 1.5536936e+10 0.17808719 0.051074805 -11.657085 44.031510 6542.6154 1.4199671e+10 0.17548147 0.051235886 -11.748610 43.901449 6544.7637 1.2958260e+10 0.17324041 0.052263856 -11.840134 43.771388 6546.9119 1.1791800e+10 0.17081977 0.053214896 -11.931658 43.641327 6549.0602 1.0749389e+10 0.16817626 0.054027611 -12.020927 43.513002 6551.2084 9.9130575e+09 0.16626211 0.055308915 -12.096794 43.394986 6553.3567 9.2567440e+09 0.16430935 0.055155764 -12.172661 43.276971 6555.5049 8.6895225e+09 0.16186124 0.054429092 -12.260607 43.149664 6557.6532 8.1125446e+09 0.15945330 0.053456682 -12.352131 43.019603 6559.8015 7.5301992e+09 0.15660374 0.052296720 -12.440305 42.889543 6561.9497 6.9561089e+09 0.15345259 0.050904688 -12.527012 42.759482 6564.0980 6.4366634e+09 0.15001366 0.048727203 -12.613719 42.629421 6566.2462 5.9638413e+09 0.14735354 0.047043603 -12.700426 42.499360 6568.3945 5.5444388e+09 0.14503597 0.045409056 -12.787133 42.369299 6570.5427 5.1659145e+09 0.14271877 0.044692697 -12.873840 42.239239 6572.6910 4.8090835e+09 0.14006061 0.043834454 -12.958294 42.106926 6574.8392 4.4652970e+09 0.13696065 0.042451928 -13.040184 41.972049 6576.9875 4.1387567e+09 0.13353888 0.040234785 -13.123961 41.839058 6579.1357 3.8470903e+09 0.12945321 0.036995880 -13.210668 41.708997 6581.2840 3.5734741e+09 0.12587953 0.035510614 -13.295854 41.578936 6583.4322 3.3293192e+09 0.12248015 0.034802886 -13.377744 41.448876 6585.5805 3.0909115e+09 0.11885211 0.033506683 -13.459633 41.318816 6587.7287 2.8692722e+09 0.11566028 0.033319832 -13.541524 41.188756 6589.8770 2.6612743e+09 0.11247485 0.031306090 -13.623414 41.058697 6592.0253 2.4567071e+09 0.10940074 0.028048998 -13.705304 40.928636 6594.1735 2.2785990e+09 0.10691311 0.026077277 -13.786294 40.799634 6596.3218 2.1311424e+09 0.10425267 0.025725811 -13.857946 40.681618 6598.4700 2.0137601e+09 0.10229776 0.025182764 -13.929598 40.563601 6600.6183 1.9071569e+09 0.10178635 0.026260918 -14.005128 40.436970 6602.7665 1.7903996e+09 0.10083654 0.026862515 -14.082201 40.306909 6604.9148 1.6658176e+09 0.099913526 0.026614439 -14.159274 40.176849 6607.0630 1.5486060e+09 0.098622798 0.025582539 -14.236347 40.046790 6609.2113 1.4409903e+09 0.095489118 0.023768692 -14.316134 39.916730 6611.3595 1.3414436e+09 0.092647023 0.024729179 -14.398024 39.786669 6613.5078 1.2469773e+09 0.091547112 0.023759899 -14.477566 39.656608 6615.6560 1.1550995e+09 0.090005785 0.023271716 -14.554639 39.526548 6617.8043 1.0669742e+09 0.089095705 0.023705911 -14.629730 39.396487 6619.9525 9.8607217e+08 0.088330295 0.024755749 -14.701986 39.266427 6622.1008 9.1762547e+08 0.086905897 0.024731162 -14.772625 39.141821 6624.2491 8.6472003e+08 0.084825707 0.024995628 -14.840062 39.028020 6626.3973 8.2075691e+08 0.083080440 0.026084695 -14.907500 38.914219 6628.5456 7.7755991e+08 0.081293525 0.025924599 -14.979577 38.780124 6630.6938 7.3188234e+08 0.079411101 0.025930011 -15.051833 38.645247 6632.8421 6.8441879e+08 0.077737264 0.026133316 -15.128361 38.514642 6634.9903 6.3938548e+08 0.076114473 0.026399082 -15.205434 38.384581 6637.1386 5.9950146e+08 0.074577006 0.026093541 -15.278600 38.254521 6639.2868 5.5975246e+08 0.073950280 0.025525555 -15.350856 38.124460 6641.4351 5.2124758e+08 0.074846642 0.025149778 -15.423112 37.994399 6643.5833 4.8727776e+08 0.074506832 0.025280695 -15.495368 37.864337 6645.7316 4.5552074e+08 0.073886904 0.025794408 -15.567624 37.734277 6647.8798 4.2491039e+08 0.073264195 0.026901022 -15.639880 37.604216 6650.0281 3.9553384e+08 0.072868116 0.026261669 -15.706868 37.483637 6652.1764 3.7050997e+08 0.072618002 0.027299042 -15.770090 37.369837 6654.3246 3.5587945e+08 0.071995947 0.027897941 -15.834200 37.252612 6656.4729 3.4250857e+08 0.070326988 0.028438443 -15.901639 37.122552 6658.6211 3.2577865e+08 0.068983794 0.031162634 -15.969726 36.992491 6660.7694 3.0329252e+08 0.067837374 0.032325314 -16.041982 36.862433 6662.9176 2.8130593e+08 0.066822187 0.032529433 -16.113956 36.732374 6665.0659 2.6502046e+08 0.066302869 0.028439195 -16.181395 36.602312 6667.2141 2.4792199e+08 0.065949428 0.027182110 -16.248834 36.472251 6669.3624 2.3342066e+08 0.064983737 0.027983513 -16.316272 36.342190 6671.5106 2.1459556e+08 0.065074774 0.026872625 -16.383710 36.212130 6673.6589 1.9958925e+08 0.064501261 0.028444631 -16.443505 36.096813 6675.8071 1.8761018e+08 0.062434670 0.031344327 -16.502513 35.983012 6677.9554 1.7625678e+08 0.061297895 0.031000026 -16.566024 35.860526 6680.1036 1.6746748e+08 0.061473400 0.029463798 -16.633463 35.730465 6682.2519 1.5944987e+08 0.062152436 0.030617005 -16.700901 35.600405 6684.4002 1.5192774e+08 0.062278059 0.032674398 -16.768340 35.470344 6686.5484 1.4343978e+08 0.061284491 0.034080157 -16.835778 35.340283 6688.6967 1.3294173e+08 0.058741156 0.033946004 -16.903218 35.210222 6690.8449 1.2309486e+08 0.057768584 0.033019036 -16.969182 35.080160 6692.9932 1.1627048e+08 0.057163220 0.031612022 -17.031803 34.950100 6695.1414 1.0976702e+08 0.056796065 0.029833496 -17.095534 34.820040 6697.2897 1.0574349e+08 0.056404491 0.030127924 -17.162973 34.689981 6699.4379 1.0017499e+08 0.055227403 0.031186349 -17.229667 34.559922 6701.5862 94115771. 0.053667038 0.032269543 -17.292290 34.429861 6703.7344 87254699. 0.053956054 0.035513028 -17.354912 34.299801 6705.8827 81633148. 0.054150806 0.038237850 -17.417533 34.169740 6708.0309 79131674. 0.053952371 0.040077274 -17.480135 34.039720 6710.1792 75445050. 0.052759194 0.040531570 -17.534929 33.925918 6712.3275 71593017. 0.050562835 0.042437925 -17.589722 33.812117 6714.4757 65241259. 0.047500947 0.047339172 -17.649446 33.691108 6716.6240 58825527. 0.038686768 0.049320392 -17.712068 33.565863 6718.7722 56658051. 0.042265807 0.051015074 -17.774689 33.437952 6720.9205 55584660. 0.055435865 0.050313114 -17.837312 33.307893