# # 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 = 52.042315 km # Date (UTC) = 2015-12-07T10:26:56.589 # Date (julian) = 2457363.93537719 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.5564 5.0854705e+10 0.063147464 0.033657188 99.988427 25.923666 6507.0726 4.7060014e+10 0.074443865 0.034415925 100.04284 25.800792 6509.5887 4.3295504e+10 0.085994046 0.035174662 100.09989 25.677926 6512.1049 3.9976625e+10 0.097946857 0.035933399 100.15640 25.555594 6514.6210 3.7173543e+10 0.11039448 0.036692136 100.20906 25.437116 6517.1372 3.4485187e+10 0.12320971 0.037450872 100.26171 25.318639 6519.6533 3.1652039e+10 0.13624145 0.038209609 100.31992 25.183521 6522.1694 2.8874679e+10 0.14907453 0.038961622 100.37916 25.045296 6524.6856 2.6255007e+10 0.15603593 0.039670519 100.43302 24.923204 6527.2017 2.3987446e+10 0.16162729 0.040862931 100.48568 24.804727 6529.7179 2.2114647e+10 0.16618981 0.043379303 100.53834 24.683879 6532.2340 2.0391766e+10 0.17014450 0.046879694 100.59100 24.560998 6534.7502 1.8806668e+10 0.17224848 0.048154409 100.64366 24.439259 6537.2663 1.7361607e+10 0.17329652 0.048810782 100.69632 24.320783 6539.7825 1.5925047e+10 0.17425048 0.050590776 100.74898 24.202306 6542.2986 1.4469517e+10 0.17323860 0.051115605 100.80809 24.064464 6544.8148 1.3062143e+10 0.17237735 0.052305289 100.86733 23.926238 6547.3309 1.1784875e+10 0.17033309 0.053413198 100.92028 23.806869 6549.8470 1.0746471e+10 0.16794945 0.054829482 100.97294 23.688392 6552.3632 9.9037510e+09 0.16507806 0.055495353 101.02560 23.566938 6554.8793 9.1440532e+09 0.16220408 0.054850833 101.07826 23.444057 6557.3955 8.4696779e+09 0.15933563 0.053618221 101.12918 23.322926 6559.9116 7.8656779e+09 0.15641669 0.052284285 101.17745 23.204448 6562.4278 7.3356038e+09 0.15311076 0.050472867 101.22624 23.085971 6564.9439 6.8759628e+09 0.15028445 0.048343816 101.27889 22.967494 6567.4601 6.4305755e+09 0.14782849 0.046228197 101.33155 22.849016 6569.9762 5.9886441e+09 0.14609622 0.044915960 101.38558 22.713960 6572.4923 5.5520663e+09 0.14406336 0.043948201 101.43989 22.575734 6575.0085 5.1367646e+09 0.14186139 0.042366187 101.49285 22.453580 6577.5246 4.8016273e+09 0.13904961 0.039396293 101.54551 22.335104 6580.0408 4.4989900e+09 0.13621489 0.036483063 101.59582 22.216618 6582.5569 4.2168135e+09 0.13355747 0.035142239 101.64410 22.098125 6585.0731 3.9534293e+09 0.13110022 0.033912352 101.69237 21.979636 6587.5892 3.7158174e+09 0.12855873 0.033288918 101.74064 21.861159 6590.1054 3.5080898e+09 0.12568875 0.030866074 101.78891 21.742681 6592.6215 3.2759096e+09 0.12240351 0.027469851 101.84308 21.609727 6595.1377 3.0497761e+09 0.11909622 0.025637846 101.89738 21.476438 6597.6538 2.8291401e+09 0.11578487 0.025516413 101.94594 21.353070 6600.1699 2.6505048e+09 0.11401923 0.025339251 101.99421 21.230205 6602.6861 2.4996221e+09 0.11217234 0.026931151 102.04248 21.110281 6605.2022 2.3573435e+09 0.11032089 0.026834703 102.09076 20.991788 6607.7184 2.2316724e+09 0.10776993 0.024288464 102.13903 20.873301 6610.2345 2.1122555e+09 0.10417162 0.024227063 102.18730 20.754824 6612.7507 1.9978661e+09 0.10236878 0.023759879 102.23626 20.634639 6615.2668 1.8744367e+09 0.10136006 0.023259741 102.29056 20.501350 6617.7830 1.7587421e+09 0.10057662 0.023698838 102.34432 20.369388 6620.2991 1.6438028e+09 0.10016575 0.024863584 102.39259 20.250911 6622.8153 1.5500613e+09 0.098866796 0.024541000 102.44086 20.132434 6625.3314 1.4732257e+09 0.097383873 0.025793060 102.48913 20.013957 6627.8475 1.3999978e+09 0.095503323 0.025644203 102.53739 19.895480 6630.3637 1.3306343e+09 0.093943978 0.025929198 102.58887 19.769127 6632.8798 1.2493393e+09 0.092366877 0.026137844 102.64318 19.635838 6635.3960 1.1698615e+09 0.090755865 0.026459170 102.69221 19.512257 6637.9121 1.0978822e+09 0.089437435 0.025714682 102.73609 19.398153 6640.4283 1.0377927e+09 0.089323800 0.025218253 102.78097 19.283054 6642.9444 9.8918806e+08 0.088919152 0.025190344 102.82924 19.164577 6645.4606 9.4461640e+08 0.087472924 0.025667439 102.87751 19.046100 6647.9767 8.9380761e+08 0.086104618 0.026952019 102.92683 18.913573 6650.4928 8.4154028e+08 0.085070945 0.026368064 102.97619 18.780284 6653.0090 7.9568376e+08 0.084366341 0.027530254 103.02454 18.660664 6655.5251 7.5600898e+08 0.082422251 0.027827205 103.07281 18.542187 6658.0413 7.2183984e+08 0.080268612 0.030134299 103.12179 18.414172 6660.5574 6.8991781e+08 0.078266657 0.032132674 103.17116 18.280883 6663.0736 6.4980393e+08 0.076765818 0.032462823 103.21713 18.159454 6665.5897 6.1990279e+08 0.076243137 0.027580853 103.26102 18.045350 6668.1059 5.8773504e+08 0.075692696 0.027564458 103.30844 17.924729 6670.6220 5.5523045e+08 0.075428120 0.027040465 103.36275 17.791441 6673.1382 5.2955748e+08 0.075179979 0.027665840 103.41378 17.662803 6675.6543 5.0226914e+08 0.073184885 0.031051584 103.45766 17.544326 6678.1704 4.8255929e+08 0.071866828 0.030822612 103.50173 17.425503 6680.6866 4.5877465e+08 0.072514314 0.029589680 103.55110 17.297150 6683.2027 4.3375497e+08 0.073349385 0.031485694 103.60041 17.168890 6685.7189 4.0952778e+08 0.073047886 0.033464154 103.64429 17.050412 6688.2350 3.8975660e+08 0.070384349 0.033839443 103.68817 16.931935 6690.7512 3.7236712e+08 0.068589881 0.033029779 103.73606 16.806230 6693.2673 3.5413056e+08 0.067625706 0.031512382 103.78544 16.677858 6695.7835 3.3804549e+08 0.067170194 0.029715561 103.83094 16.556464 6698.2996 3.2622097e+08 0.066139097 0.030629064 103.87482 16.437987 6700.8158 3.1297760e+08 0.064074405 0.031272785 103.92104 16.315302 6703.3319 3.0041870e+08 0.063622666 0.034505750 103.97040 16.186950 6705.8480 2.8226740e+08 0.063715119 0.038176256 104.01977 16.056620 6708.3642 2.6625808e+08 0.063259618 0.040440167 104.06914 15.923331 6710.8803 2.5659836e+08 0.061441773 0.040668809 104.11645 15.797238 6713.3965 2.4355633e+08 0.059002060 0.045120604 104.16033 15.683148 6715.9126 2.3315868e+08 0.056775575 0.048311994 104.20473 15.567691 6718.4288 2.2404679e+08 0.054196121 0.050480190 104.25410 15.439339 6720.9449 2.1727424e+08 0.053950667 0.050310281 104.30312 15.310638 6723.4611 2.0835378e+08 0.052577512 0.049626085 104.34756 15.177330 6725.9772 1.9614551e+08 0.048357931 0.040965606 104.39221 15.044243 6728.4934 1.8285207e+08 0.047682116 0.040327339 104.44158 14.915891 6731.0095 1.6929792e+08 0.045957293 0.041768923 104.49084 14.787812 6733.5256 1.6054684e+08 0.044586307 0.046778165 104.53472 14.673722 6736.0418 1.5028269e+08 0.046013224 0.050512981 104.57860 14.559633 6738.5579 1.3818621e+08 0.047340530 0.060392759 104.62289 14.434985 6741.0741 1.2985956e+08 0.046255710 0.065969961 104.66732 14.306633 6743.5902 1.2255362e+08 0.041529464 0.075029059 104.71528 14.174753 6746.1064 1.1803030e+08 0.039059335 0.077750644 104.76464 14.041464 6748.6225 1.1667740e+08 0.035286613 0.070291957 104.81061 13.911576 6751.1387 1.1173704e+08 0.032003002 0.073770296 104.85504 13.783224 6753.6548 1.0574662e+08 0.029094744 0.075096350 104.90274 13.654871 6756.1709 1.0241079e+08 0.026207903 0.074606783 104.95211 13.526518 6758.6871 98088971. 0.025961036 0.075158271 104.99833 13.398165 6761.2032 96638912. 0.026959415 0.077985016 105.04276 13.269813 6763.7194 92330202. 0.032213358 0.078628661 105.09021 13.141449 6766.2355 85810885. 0.033883505 0.080246517 105.13959 13.013078 6768.7517 83322390. 0.029246397 0.083560724 105.18606 12.884718 6771.2678 81486271. 0.024388144 0.089954719 105.23049 12.756365 6773.7840 78563663. 0.019712352 0.096057477 105.27492 12.628013 6776.3001 74640467. 0.015030510 0.10216024 105.31935 12.499660 6778.8163 69741187. 0.010319183 0.10826299 105.36642 12.371308 6781.3324 66184450. 0.0056279039 0.11436575 105.41579 12.242955 6783.8485 67274098. 0.0010833997 0.12046851 105.46264 12.114603 6786.3647 67594179. -0.0035318581 0.12657127 105.50707 11.986250 6788.8808 65306294. -0.0083391280 0.13267403 105.55457 11.849025 6791.3970 60815388. -0.013440378 0.13877679 105.60535 11.702333 6793.9131 56312305. -0.018913506 0.14487954 105.65161 11.568688 6796.4293 55617047. -0.024635932 0.15098230 105.69604 11.440336 6798.9454 53389734. -0.032450349 0.15708506 105.74047 11.315369 6801.4616 50406798. -0.056708127 0.16318782 105.78490 11.191953 6803.9777 46734809. -0.046183805 0.16929058 105.83352 11.053174 6806.4939 45592000. -0.012531718 0.17539334 105.88429 10.906482