# # 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 = 48.281792 km # Date (UTC) = 2013-01-24T10:12:59.964 # Date (julian) = 2456316.92569403 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.6830 8.3542819e+10 0.046483740 0.032489161 95.452065 50.730177 6502.4832 7.6345938e+10 0.054290223 0.033032004 95.565089 50.599063 6504.2834 6.9739328e+10 0.062326477 0.033574847 95.678115 50.467198 6506.0836 6.3405233e+10 0.070530246 0.034117690 95.807375 50.320451 6507.8838 5.7433270e+10 0.078924806 0.034660534 95.943013 50.167857 6509.6839 5.2129429e+10 0.087602843 0.035203377 96.052740 50.034924 6511.4841 4.7770825e+10 0.096703192 0.035746220 96.161059 49.903059 6513.2843 4.4321846e+10 0.10629626 0.036289063 96.269379 49.775079 6515.0845 4.1303027e+10 0.11628207 0.036831906 96.377699 49.647923 6516.8847 3.8726471e+10 0.12667701 0.037374749 96.482696 49.517480 6518.6849 3.6342770e+10 0.13736864 0.037917592 96.586282 49.385641 6520.4851 3.3714025e+10 0.14811527 0.038460436 96.705128 49.241806 6522.2853 3.0869154e+10 0.15809038 0.038991957 96.835117 49.089212 6524.0855 2.8162849e+10 0.16372887 0.039457327 96.943776 48.953378 6525.8857 2.5854369e+10 0.16847195 0.039681135 97.047385 48.821511 6527.6859 2.4013769e+10 0.17418541 0.041214417 97.147767 48.692871 6529.4861 2.2345619e+10 0.17787712 0.043010029 97.246667 48.565714 6531.2862 2.0761600e+10 0.18028102 0.045645317 97.348212 48.435912 6533.0864 1.9324895e+10 0.18270972 0.047556322 97.451821 48.304047 6534.8866 1.8041994e+10 0.18310034 0.048192583 97.553357 48.174258 6536.6868 1.6859154e+10 0.18166653 0.048405021 97.652236 48.047127 6538.4870 1.5739794e+10 0.18064790 0.049393832 97.751121 47.918506 6540.2872 1.4659341e+10 0.17976267 0.050989787 97.850020 47.786640 6542.0874 1.3675357e+10 0.17744877 0.051035420 97.948018 47.655675 6543.8876 1.2766198e+10 0.17521065 0.051614846 98.042207 47.528519 6545.6878 1.1933139e+10 0.17340382 0.052461729 98.136715 47.401043 6547.4880 1.1121261e+10 0.17208388 0.053472933 98.235614 47.269178 6549.2882 1.0363268e+10 0.17008413 0.054259948 98.334513 47.137313 6551.0884 9.6870608e+09 0.16827011 0.055266767 98.428966 47.005445 6552.8886 9.0877718e+09 0.16698788 0.055363118 98.523158 46.873578 6554.6887 8.5598498e+09 0.16498186 0.054846833 98.617347 46.745581 6556.4889 8.0659379e+09 0.16256240 0.053941243 98.711536 46.618426 6558.2891 7.6178395e+09 0.16030941 0.052992930 98.802427 46.488001 6560.0893 7.1863684e+09 0.15789117 0.052193774 98.891890 46.356161 6561.8895 6.7903973e+09 0.15490106 0.050934348 98.981365 46.224306 6563.6897 6.3995174e+09 0.15178123 0.049130536 99.070846 46.092440 6565.4899 6.0247602e+09 0.14933718 0.047762111 99.162449 45.962697 6567.2901 5.6520917e+09 0.14708832 0.046371909 99.256637 45.835541 6569.0903 5.3207902e+09 0.14441794 0.044858300 99.343780 45.713009 6570.8905 5.0587179e+09 0.14211916 0.044548644 99.416438 45.599985 6572.6907 4.8428688e+09 0.13963236 0.043834629 99.489097 45.486961 6574.4909 4.6558855e+09 0.13674218 0.042619247 99.576054 45.357922 6576.2911 4.4428818e+09 0.13422837 0.041036388 99.665536 45.226054 6578.0912 4.2322852e+09 0.13206845 0.038505531 99.751595 45.097610 6579.8914 4.0122409e+09 0.13003295 0.036580436 99.836366 44.970453 6581.6916 3.7957809e+09 0.12798075 0.035387175 99.923976 44.840457 6583.4918 3.5999343e+09 0.12620340 0.034772730 100.01345 44.708591 6585.2920 3.4031879e+09 0.12458188 0.033737317 100.10067 44.576739 6587.0922 3.2288811e+09 0.12290868 0.033178798 100.18542 44.444899 6588.8924 3.0703228e+09 0.12111727 0.033081912 100.26443 44.321196 6590.6926 2.9367098e+09 0.11895216 0.029773746 100.33306 44.212208 6592.4928 2.8342461e+09 0.11679078 0.027594887 100.40168 44.103220 6594.2930 2.7275670e+09 0.11443050 0.026011696 100.48449 43.974130 6596.0932 2.6079580e+09 0.11176889 0.025726850 100.56926 43.842265 6597.8934 2.4760923e+09 0.11003440 0.025440818 100.65047 43.710398 6599.6935 2.3458765e+09 0.10892520 0.024971444 100.73054 43.578530 6601.4937 2.2342765e+09 0.10834924 0.027278213 100.80337 43.461122 6603.2939 2.1498627e+09 0.10689655 0.026489266 100.87199 43.352134 6605.0941 2.0770037e+09 0.10589884 0.026744006 100.94238 43.239608 6606.8943 2.0031625e+09 0.10437625 0.025896905 101.02244 43.107743 6608.6945 1.9121272e+09 0.10149502 0.023714009 101.10250 42.975878 6610.4947 1.8150661e+09 0.098704451 0.024475654 101.18256 42.844013 6612.2949 1.7236372e+09 0.096897563 0.024100419 101.26262 42.712147 6614.0951 1.6420149e+09 0.095913548 0.023874983 101.33230 42.601052 6615.8953 1.5827742e+09 0.094612692 0.023279077 101.40092 42.492063 6617.6955 1.5238697e+09 0.094227821 0.023669830 101.47244 42.373226 6619.4957 1.4684903e+09 0.093778654 0.024645509 101.54779 42.241361 6621.2959 1.4051199e+09 0.093157159 0.024991385 101.62314 42.109503 6623.0960 1.3291809e+09 0.092177214 0.024527409 101.69848 41.977662 6624.8962 1.2643088e+09 0.091224443 0.025342061 101.77185 41.850012 6626.6964 1.2092105e+09 0.089748043 0.025703587 101.83643 41.741024 6628.4966 1.1634706e+09 0.088825873 0.025904728 101.90101 41.632035 6630.2968 1.1244514e+09 0.087666920 0.025929033 101.97320 41.506895 6632.0970 1.0773305e+09 0.086349885 0.026043977 102.04856 41.375030 6633.8972 1.0239159e+09 0.085244208 0.026308894 102.12391 41.243165 6635.6974 9.6686511e+08 0.084237429 0.026504372 102.19926 41.111300 6637.4976 9.1603869e+08 0.083390816 0.025917711 102.26781 40.989942 6639.2978 8.8182221e+08 0.082707421 0.025521644 102.32836 40.880953 6641.0980 8.5427731e+08 0.083177119 0.025148633 102.38891 40.771955 6642.8982 8.2773643e+08 0.082773576 0.025188451 102.46400 40.640511 6644.6984 7.9466390e+08 0.081857201 0.025419083 102.53935 40.508646 6646.4985 7.5754370e+08 0.080886396 0.026178209 102.60199 40.392957 6648.2987 7.2846307e+08 0.079961808 0.027164258 102.66254 40.279931 6650.0989 7.0197932e+08 0.079355226 0.026277884 102.72693 40.161518 6651.8991 6.7339248e+08 0.078809887 0.027173210 102.79757 40.034362 6653.6993 6.4805941e+08 0.078325718 0.027882705 102.86561 39.910850 6655.4995 6.2622530e+08 0.077116402 0.027816612 102.92616 39.797826 6657.2997 6.0798952e+08 0.075796989 0.029248748 102.98671 39.684802 6659.0999 5.8540759e+08 0.074634475 0.031813762 103.05513 39.557092 6660.9001 5.5949613e+08 0.073769492 0.032444126 103.12576 39.425253 6662.7003 5.3399705e+08 0.072955102 0.032651378 103.19330 39.296489 6664.5005 5.1069788e+08 0.072272064 0.030374913 103.25924 39.169332 6666.3007 4.8911526e+08 0.072360119 0.026967182 103.32230 39.049713 6668.1008 4.6818684e+08 0.071836001 0.027560018 103.38285 38.936689 6669.9010 4.5133732e+08 0.071435606 0.027430272 103.44370 38.822873 6671.7012 4.3535417e+08 0.071330546 0.026875342 103.50963 38.695716 6673.5014 4.1910240e+08 0.070901652 0.028209134 103.57556 38.568560 6675.3016 4.0118362e+08 0.069461721 0.030376062 103.63271 38.454583 6677.1018 3.8513851e+08 0.067817819 0.032213487 103.68922 38.341558 6678.9020 3.7029008e+08 0.067325513 0.030333318 103.75002 38.219953 6680.7022 3.5520851e+08 0.068251004 0.029593049 103.81596 38.088088 6682.5024 3.4080885e+08 0.068840351 0.030808384 103.87876 37.963818 6684.3026 3.2799768e+08 0.068887470 0.032669446 103.93527 37.854830 6686.1028 3.2331040e+08 0.068230284 0.033820877 103.99179 37.745842 6687.9030 3.1263423e+08 0.066177234 0.033839310 104.05232 37.617301 6689.7032 2.9848083e+08 0.064328137 0.033383074 104.11355 37.485435 6691.5033 2.8634371e+08 0.063483593 0.032882507 104.17132 37.370299 6693.3035 2.7334021e+08 0.062839324 0.031499957 104.22784 37.261311 6695.1037 2.6783845e+08 0.062501281 0.029840420 104.28554 37.146514 6696.9039 2.5688972e+08 0.062161364 0.030051346 104.34677 37.014648 6698.7041 2.4426526e+08 0.061309221 0.031184294 104.40738 36.885771 6700.5043 2.3508285e+08 0.060002075 0.031041776 104.46389 36.776782 6702.3045 2.2763698e+08 0.059087668 0.033119873 104.52040 36.667794 6704.1047 2.2403730e+08 0.059402693 0.036228961 104.57999 36.543878 6705.9049 2.1493091e+08 0.059523884 0.038277303 104.64120 36.412038 6707.7051 2.0581838e+08 0.059333667 0.040085825 104.70241 36.282677 6709.5053 1.9774996e+08 0.058630055 0.040811170 104.76364 36.155522 6711.3055 1.8850472e+08 0.057144352 0.041039760 104.82131 36.034104 6713.1057 1.8292741e+08 0.055589303 0.044068738 104.87379 35.921079 6714.9058 1.7730410e+08 0.053998746 0.047371510 104.92626 35.808053 6716.7060 1.6992957e+08 0.052427103 0.049441284 104.98686 35.681904 6718.5062 1.6441420e+08 0.050655321 0.050600823 105.04808 35.554747 6720.3064 1.5627899e+08 0.050444785 0.050384262 105.09901 35.438973 6722.1066 1.4837692e+08 0.050496654 0.050473406 105.14745 35.325949 6723.9068 1.4510874e+08 0.048865412 0.049874683 105.20008 35.208289 6725.7070 1.4259139e+08 0.045367518 0.041134394 105.26131 35.081132 6727.5072 1.3975787e+08 0.044561574 0.040284668 105.31991 34.956868 6729.3074 1.3404301e+08 0.044170237 0.040840551 105.36835 34.843844 6731.1076 1.2711894e+08 0.042851889 0.041964111 105.41679 34.730820 6732.9078 1.2120806e+08 0.042087189 0.043907325 105.47453 34.607517 6734.7080 1.1781202e+08 0.042130824 0.049311004 105.53575 34.480359 6736.5081 1.1437897e+08 0.043852696 0.052276087 105.59412 34.353218 6738.3083 1.1011422e+08 0.045038219 0.059018641 105.65063 34.226087 6740.1085 1.0583618e+08 0.045039991 0.064235769 105.70326 34.105730 6741.9087 98949608. 0.043552773 0.068350424 105.75170 33.992706 6743.7089 92662226. 0.039990787 0.075829766 105.80017 33.879628 6745.5091 86729996. 0.038876090 0.078780911 105.85667 33.752485 6747.3093 81309241. 0.034891544 0.067254681 105.91319 33.625329 6749.1095 76589193. 0.035164346 0.072247954 105.96260 33.514151 6750.9097 73200769. 0.033048842 0.073557453 106.01104 33.405163 6752.7099 77244804. 0.030517746 0.073313017 106.06273 33.286975 6754.5101 86168271. 0.029194456 0.075393218 106.11924 33.155110 6756.3103 90552259. 0.027073334 0.074965255 106.17444 33.024557 6758.1105 90787584. 0.027116674 0.073938889 106.22624 32.897400 6759.9106 85476754. 0.028038495 0.076039708 106.27752 32.773066 6761.7108 81750897. 0.030973076 0.078026954 106.32596 32.664078 6763.5110 80573435. 0.034540720 0.077994113 106.37440 32.555090 6765.3112 76196015. 0.036816457 0.079588007 106.42513 32.430590 6767.1114 73204811. 0.036763844 0.081851012 106.47693 32.298725 6768.9116 68028866. 0.033435748 0.084136195 106.53135 32.169471 6770.7118 63773641. 0.031249189 0.088606121 106.58786 32.042314 6772.5120 60183033. 0.029734534 0.092972379 106.63915 31.922993 6774.3122 53094603. 0.037596234 0.097338636 106.68356 31.814006 6776.1124 48461629. 0.026450490 0.10170489 106.72796 31.705018 6777.9126 46760233. 0.0026611326 0.10607115 106.77941 31.578722