# # 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 = 39.844031 km # Date (UTC) = 2017-01-11T08:30:09.478 # Date (julian) = 2457764.85427636 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.9409 5.3969925e+10 0.086640993 0.034677771 -7.2581684 50.326762 6509.6355 4.9854665e+10 0.095148249 0.035188774 -7.3446124 50.243643 6511.3301 4.6064182e+10 0.10378733 0.035699776 -7.4294833 50.158938 6513.0247 4.2826576e+10 0.11263760 0.036210779 -7.5126150 50.072480 6514.7193 3.9805469e+10 0.12164407 0.036721782 -7.5957468 49.986022 6516.4139 3.7034030e+10 0.13080407 0.037232784 -7.6804279 49.901126 6518.1085 3.4418723e+10 0.14007841 0.037743787 -7.7668723 49.818006 6519.8031 3.1862628e+10 0.14942021 0.038254790 -7.8533168 49.734886 6521.4977 2.9459615e+10 0.15885395 0.038765792 -7.9382317 49.651767 6523.1923 2.7362889e+10 0.16506266 0.039226781 -8.0213509 49.568648 6524.8869 2.5385405e+10 0.17053376 0.039742047 -8.1044701 49.485528 6526.5815 2.3578590e+10 0.17373446 0.040277756 -8.1875894 49.400905 6528.2761 2.1719113e+10 0.17707041 0.041661541 -8.2707090 49.314462 6529.9707 1.9971204e+10 0.18053904 0.043782081 -8.3538286 49.228018 6531.6653 1.8362952e+10 0.18203747 0.046197086 -8.4354702 49.143052 6533.3599 1.6906216e+10 0.18321799 0.047672550 -8.5152651 49.059933 6535.0545 1.5569256e+10 0.18364571 0.048200637 -8.5950599 48.976813 6536.7491 1.4335993e+10 0.18234587 0.048460778 -8.6748546 48.892241 6538.4437 1.3200272e+10 0.18125346 0.049372761 -8.7546494 48.805796 6540.1383 1.2155386e+10 0.18036361 0.050919460 -8.8344441 48.719351 6541.8329 1.1221172e+10 0.17768650 0.051056411 -8.9142387 48.634333 6543.5275 1.0349106e+10 0.17553845 0.051520351 -8.9940332 48.551214 6545.2222 9.5576742e+09 0.17398993 0.052457557 -9.0738277 48.468094 6546.9168 8.8372678e+09 0.17204333 0.053218865 -9.1536222 48.384975 6548.6114 8.1986790e+09 0.16980078 0.053850217 -9.2334167 48.301856 6550.3060 7.6337352e+09 0.16835280 0.055061968 -9.3132112 48.218736 6552.0006 7.1286420e+09 0.16658346 0.055586626 -9.3916353 48.134236 6553.6952 6.6443484e+09 0.16406671 0.054985620 -9.4681170 48.047780 6555.3898 6.1851802e+09 0.16208804 0.054525873 -9.5445986 47.961323 6557.0844 5.7683891e+09 0.15986509 0.053813229 -9.6210754 47.876222 6558.7790 5.4048429e+09 0.15685623 0.052575532 -9.6975450 47.793103 6560.4736 5.0821754e+09 0.15409771 0.051847329 -9.7740146 47.709984 6562.1682 4.7834317e+09 0.15120560 0.050719887 -9.8504845 47.625539 6563.8628 4.4964349e+09 0.14773248 0.048930343 -9.9269547 47.539095 6565.5574 4.2219187e+09 0.14506338 0.047685496 -10.003425 47.452651 6567.2520 3.9798070e+09 0.14247921 0.046404139 -10.078595 47.366207 6568.9466 3.7458076e+09 0.13947205 0.044901537 -10.151740 47.279762 6570.6412 3.5242134e+09 0.13717265 0.044651913 -10.224885 47.193318 6572.3358 3.3150872e+09 0.13451251 0.044037865 -10.299305 47.108147 6574.0304 3.1222702e+09 0.13100007 0.042840415 -10.375774 47.025027 6575.7250 2.9508669e+09 0.12811653 0.041647326 -10.452244 46.941908 6577.4196 2.7902639e+09 0.12543766 0.039561312 -10.526217 46.857540 6579.1142 2.6407791e+09 0.12256731 0.037007727 -10.596038 46.771097 6580.8088 2.4924460e+09 0.12056767 0.035773320 -10.665858 46.684653 6582.5034 2.3551177e+09 0.11893070 0.035156809 -10.736901 46.599432 6584.1980 2.2245669e+09 0.11691452 0.034407660 -10.810046 46.516313 6585.8926 2.1082359e+09 0.11500368 0.033257169 -10.883191 46.433193 6587.5872 1.9983332e+09 0.11359659 0.033288468 -10.955139 46.348877 6589.2818 1.8946329e+09 0.11164572 0.032486927 -11.024960 46.262432 6590.9764 1.7940844e+09 0.10933586 0.029245821 -11.094780 46.175986 6592.6710 1.6954570e+09 0.10749088 0.027421785 -11.165772 46.090713 6594.3656 1.6121461e+09 0.10522335 0.025971829 -11.238917 46.007594 6596.0602 1.5315913e+09 0.10259620 0.025727000 -11.312061 45.924474 6597.7548 1.4583129e+09 0.10077953 0.025484541 -11.382918 45.840205 6599.4494 1.3817114e+09 0.099348382 0.024956759 -11.449424 45.753748 6601.1440 1.3020779e+09 0.098903517 0.027113507 -11.515930 45.667291 6602.8386 1.2310495e+09 0.097749765 0.026801002 -11.583554 45.581961 6604.5332 1.1606478e+09 0.096502277 0.026387877 -11.653374 45.498841 6606.2278 1.0929354e+09 0.095658388 0.027094599 -11.723195 45.415722 6607.9224 1.0312764e+09 0.093515128 0.023885583 -11.793015 45.331506 6609.6170 9.6987787e+08 0.090758456 0.023889213 -11.862835 45.245061 6611.3116 9.1639794e+08 0.088098888 0.024759739 -11.932655 45.158616 6613.0062 8.6634632e+08 0.087066571 0.023575871 -12.001405 45.072172 6614.7008 8.1463485e+08 0.085954250 0.023457658 -12.067901 44.985728 6616.3954 7.6968104e+08 0.084730813 0.023344360 -12.134397 44.899284 6618.0900 7.3204834e+08 0.084472745 0.023838771 -12.200892 44.813885 6619.7846 6.9337920e+08 0.084152245 0.024715230 -12.267388 44.730766 6621.4792 6.5655923e+08 0.083481099 0.024930606 -12.333883 44.647647 6623.1738 6.1421595e+08 0.082532036 0.024556225 -12.399359 44.563509 6624.8684 5.7195848e+08 0.081751201 0.025327173 -12.462530 44.477065 6626.5630 5.4023923e+08 0.080492477 0.025873554 -12.525701 44.390621 6628.2576 5.0954552e+08 0.079673119 0.025807695 -12.589865 44.304177 6629.9522 4.8384348e+08 0.078804164 0.025936939 -12.656361 44.217732 6631.6468 4.6237654e+08 0.077454641 0.025996471 -12.722856 44.131287 6633.3414 4.4394080e+08 0.076498232 0.026211864 -12.788385 44.045810 6635.0360 4.2742294e+08 0.075480591 0.026405192 -12.851555 43.962691 6636.7306 4.0577291e+08 0.074333783 0.026266016 -12.914726 43.879571 6638.4252 3.8099367e+08 0.073708229 0.025653116 -12.977896 43.795510 6640.1198 3.6285125e+08 0.073963236 0.025255989 -13.041067 43.709066 6641.8144 3.4808981e+08 0.074081489 0.025151066 -13.104238 43.622622 6643.5090 3.3626656e+08 0.073404467 0.025269478 -13.167412 43.537091 6645.2036 3.2031005e+08 0.072750617 0.025547084 -13.230592 43.453959 6646.8982 3.0508806e+08 0.071836714 0.026385109 -13.293772 43.370827 6648.5928 2.9420998e+08 0.070923030 0.027361139 -13.356950 43.286807 6650.2874 2.8513969e+08 0.070579322 0.026321042 -13.420121 43.200362 6651.9821 2.7451613e+08 0.070242946 0.027236766 -13.483291 43.113917 6653.6767 2.6570665e+08 0.069962700 0.027871136 -13.545595 43.027472 6655.3713 2.5426170e+08 0.069090546 0.027763619 -13.605441 42.941029 6657.0659 2.4568207e+08 0.067896790 0.028977502 -13.665287 42.854585 6658.7605 2.3829845e+08 0.066948845 0.031409766 -13.727296 42.765979 6660.4551 2.2405675e+08 0.066301992 0.032039625 -13.795693 42.670984 6662.1497 2.1537799e+08 0.065439080 0.032960303 -13.864090 42.575988 6663.8443 2.0389969e+08 0.064637289 0.032249247 -13.927175 42.486304 6665.5389 1.9481184e+08 0.064968651 0.027664182 -13.987021 42.399858 6667.2335 1.8908938e+08 0.064768356 0.027189214 -14.046867 42.313413 6668.9281 1.8383899e+08 0.063903091 0.028292048 -14.106713 42.229008 6670.6227 1.7902460e+08 0.064231678 0.027040160 -14.166559 42.145889 6672.3173 1.7252717e+08 0.064180752 0.027063495 -14.226405 42.062769 6674.0119 1.6227975e+08 0.063720031 0.028964806 -14.286251 41.977636 6675.7065 1.5518580e+08 0.062172339 0.031151514 -14.346097 41.891193 6677.4011 1.5001146e+08 0.061127302 0.031788047 -14.405943 41.804749 6679.0957 1.4305218e+08 0.060824471 0.030188708 -14.463801 41.718305 6680.7903 1.3634302e+08 0.061912634 0.029612071 -14.520322 41.631860 6682.4849 1.2998878e+08 0.062607349 0.030795010 -14.576843 41.545415 6684.1795 1.2204303e+08 0.062858970 0.032663200 -14.635327 41.460933 6685.8741 1.1991270e+08 0.062563065 0.033628085 -14.695173 41.377813 6687.5687 1.1492492e+08 0.060887948 0.034025739 -14.755019 41.294694 6689.2633 1.1068453e+08 0.058954310 0.033779024 -14.812928 41.209637 6690.9579 1.1071529e+08 0.058419988 0.033006089 -14.869449 41.123194 6692.6525 1.0458830e+08 0.058016086 0.032007632 -14.925971 41.036750 6694.3471 99942666. 0.057573551 0.030774560 -14.987134 40.945390 6696.0417 91350344. 0.057794855 0.029693108 -15.051731 40.850395 6697.7363 80270514. 0.057567537 0.030184445 -15.116328 40.755399 6699.4309 74152539. 0.056698550 0.031192838 -15.173317 40.668457 6701.1255 72791184. 0.055453912 0.031593587 -15.229846 40.582001 6702.8201 72430853. 0.055436890 0.033531583 -15.286376 40.495544 6704.5147 69045737. 0.055856495 0.036430299 -15.339786 40.409099 6706.2093 64513634. 0.056065410 0.038810679 -15.392982 40.322654 6707.9039 61352381. 0.056120753 0.040057343 -15.446178 40.236209 6709.5985 61916481. 0.055481245 0.040751864 -15.502461 40.152851 6711.2931 62736558. 0.054157972 0.041025709 -15.558983 40.069731 6712.9877 61976763. 0.052890062 0.043663804 -15.615504 39.986611 6714.6823 57088978. 0.051618849 0.047354705 -15.675961 39.889063 6716.3769 56194717. 0.050442205 0.048956517 -15.736758 39.790268 6718.0715 53071266. 0.049317133 0.049923791 -15.795361 39.696000 6719.7661 52079093. 0.048577141 0.050641974 -15.848557 39.612880 6721.4607 52079937. 0.050168982 0.050442715 -15.901753 39.529761 6723.1553 50578730. 0.048175156 0.049455568 -15.954950 39.445707 6724.8499 51158882. 0.042446821 0.042829282 -16.008146 39.359262