# # 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 = 43.642298 km # Date (UTC) = 2012-01-08T10:20:54.321 # Date (julian) = 2455934.93118427 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6487.5120 2.8218766e+11 0.018435959 0.028517473 -38.777770 46.306435 6489.3992 2.4730359e+11 0.024471942 0.029086571 -38.860637 46.210158 6491.2865 2.1625155e+11 0.030313331 0.029655669 -38.942096 46.113885 6493.1737 1.9024801e+11 0.035831652 0.030224767 -39.023556 46.017612 6495.0610 1.6605038e+11 0.041102850 0.030793865 -39.108427 45.921341 6496.9483 1.4540211e+11 0.045968980 0.031362963 -39.193591 45.825069 6498.8355 1.2909861e+11 0.050310851 0.031932060 -39.277939 45.727982 6500.7228 1.1453805e+11 0.054243360 0.032501158 -39.359400 45.628008 6502.6100 1.0203242e+11 0.057914819 0.033070256 -39.440861 45.528033 6504.4973 9.1053959e+10 0.061657937 0.033639354 -39.520398 45.429982 6506.3845 8.1660419e+10 0.065894130 0.034208452 -39.598156 45.333711 6508.2718 7.3832456e+10 0.071090076 0.034777550 -39.675914 45.237439 6510.1591 6.7407295e+10 0.077788090 0.035346648 -39.756705 45.141167 6512.0463 6.1463570e+10 0.086127024 0.035915746 -39.838166 45.044894 6513.9336 5.6093521e+10 0.096367530 0.036484843 -39.919189 44.948622 6515.8208 5.1339561e+10 0.10858952 0.037053941 -39.996947 44.852350 6517.7081 4.6952614e+10 0.12259475 0.037623039 -40.074705 44.756079 6519.5954 4.3103824e+10 0.13808796 0.038192137 -40.152464 44.659807 6521.4826 3.9640293e+10 0.15305242 0.038761235 -40.230223 44.563534 6523.3699 3.6561866e+10 0.16228689 0.039270785 -40.307982 44.467261 6525.2571 3.3768788e+10 0.16807832 0.039752869 -40.385748 44.370979 6527.1444 3.1263236e+10 0.17117374 0.040821300 -40.463518 44.274694 6529.0317 2.8974349e+10 0.17247385 0.042286201 -40.541224 44.178408 6530.9189 2.6940172e+10 0.17390409 0.045115153 -40.615281 44.082135 6532.8062 2.5097295e+10 0.17605939 0.047357661 -40.689337 43.985862 6534.6934 2.3399686e+10 0.17610080 0.048138536 -40.763392 43.889590 6536.5807 2.1810504e+10 0.17492294 0.048310056 -40.837446 43.793319 6538.4679 2.0339340e+10 0.17455276 0.049384545 -40.911501 43.697048 6540.3552 1.9019072e+10 0.17406739 0.051021909 -40.985556 43.600776 6542.2425 1.7774224e+10 0.17230064 0.051094290 -41.059611 43.504505 6544.1297 1.6629234e+10 0.17063280 0.051749580 -41.133667 43.408233 6546.0170 1.5532387e+10 0.16890709 0.052478498 -41.207723 43.311961 6547.9042 1.4495075e+10 0.16832061 0.053631230 -41.281778 43.215688 6549.7915 1.3531388e+10 0.16723247 0.054772879 -41.355834 43.119416 6551.6788 1.2622188e+10 0.16578801 0.055474005 -41.429890 43.023144 6553.5660 1.1763660e+10 0.16412684 0.055050539 -41.503945 42.926873 6555.4533 1.0956845e+10 0.16250733 0.054472507 -41.576101 42.828701 6557.3405 1.0213168e+10 0.16066810 0.053652660 -41.646453 42.728726 6559.2278 9.5117703e+09 0.15799973 0.052361470 -41.716805 42.628751 6561.1150 8.8872286e+09 0.15507228 0.051315987 -41.787157 42.531784 6563.0023 8.3049503e+09 0.15267263 0.049925696 -41.857509 42.435511 6564.8896 7.7765548e+09 0.15034410 0.048368445 -41.927861 42.339239 6566.7768 7.2898548e+09 0.14821812 0.046743436 -41.998215 42.242967 6568.6641 6.8399584e+09 0.14659232 0.045161210 -42.068568 42.146696 6570.5513 6.4403946e+09 0.14551381 0.044689124 -42.138925 42.050419 6572.4386 6.0695903e+09 0.14416301 0.043978979 -42.209288 41.954133 6574.3259 5.7361470e+09 0.14221790 0.042698495 -42.279650 41.857848 6576.2131 5.4280544e+09 0.14032885 0.041126088 -42.347374 41.761571 6578.1004 5.1384091e+09 0.13841602 0.038491105 -42.414024 41.665298 6579.9876 4.8699644e+09 0.13642844 0.036527549 -42.480714 41.569025 6581.8749 4.6122049e+09 0.13435936 0.035331678 -42.551064 41.472754 6583.7622 4.3721519e+09 0.13240151 0.034635898 -42.621416 41.376483 6585.6494 4.1525042e+09 0.13053323 0.033451581 -42.690622 41.280211 6587.5367 3.9487128e+09 0.12890991 0.033277276 -42.757272 41.183938 6589.4239 3.7501143e+09 0.12685237 0.032204935 -42.823922 41.087665 6591.3112 3.5645464e+09 0.12430463 0.028850768 -42.890572 40.991393 6593.1984 3.3874529e+09 0.12209327 0.026917723 -42.957222 40.895122 6595.0857 3.2104846e+09 0.11959576 0.025632459 -43.023872 40.798851 6596.9730 3.0463091e+09 0.11684143 0.025722850 -43.090522 40.702578 6598.8602 2.8833430e+09 0.11465903 0.024996463 -43.157172 40.606305 6600.7475 2.7298566e+09 0.11410948 0.026526564 -43.221603 40.511569 6602.6347 2.6035601e+09 0.11266606 0.026974969 -43.277556 40.422704 6604.5220 2.4999996e+09 0.11093512 0.026381224 -43.333508 40.333839 6606.4093 2.4097457e+09 0.10974167 0.026768535 -43.391270 40.243722 6608.2965 2.3199094e+09 0.10726414 0.023724532 -43.457920 40.147450 6610.1838 2.2176160e+09 0.10475599 0.024178575 -43.524570 40.051179 6612.0710 2.1185515e+09 0.10288469 0.024267675 -43.589489 39.954900 6613.9583 2.0237450e+09 0.10211874 0.023925191 -43.652445 39.858615 6615.8456 1.9242911e+09 0.10089893 0.023277547 -43.715401 39.762329 6617.7328 1.8320530e+09 0.10036292 0.023682211 -43.778350 39.666054 6619.6201 1.7436970e+09 0.099787629 0.024675527 -43.841298 39.569781 6621.5073 1.6659215e+09 0.098850184 0.024921290 -43.904246 39.473508 6623.3946 1.5915333e+09 0.097354613 0.024638015 -43.967192 39.377237 6625.2818 1.5139150e+09 0.096243673 0.025733934 -44.030139 39.280965 6627.1691 1.4358344e+09 0.094354249 0.025382134 -44.093086 39.184693 6629.0564 1.3616872e+09 0.093354039 0.026098914 -44.156033 39.088421 6630.9436 1.2996403e+09 0.091727288 0.025930627 -44.218981 38.992148 6632.8309 1.2427356e+09 0.090429381 0.026131975 -44.279462 38.895876 6634.7181 1.1879597e+09 0.088939987 0.026379227 -44.338706 38.799605 6636.6054 1.1297976e+09 0.087409619 0.026314651 -44.397950 38.703334 6638.4927 1.0720123e+09 0.086333569 0.025650178 -44.460769 38.607061 6640.3799 1.0257080e+09 0.086325143 0.025224168 -44.523715 38.510788 6642.2672 9.8008604e+08 0.086001957 0.025162630 -44.585682 38.414515 6644.1544 9.3712281e+08 0.084734736 0.025360297 -44.644926 38.318244 6646.0417 8.9506938e+08 0.083559459 0.025941730 -44.704170 38.221973 6647.9290 8.5446167e+08 0.082539407 0.026926878 -44.763414 38.125701 6649.8162 8.2008718e+08 0.081704350 0.026508578 -44.822659 38.029428 6651.7035 7.8302351e+08 0.081296017 0.027023275 -44.881903 37.933155 6653.5907 7.5120086e+08 0.080921242 0.027827267 -44.941155 37.836871 6655.4780 7.2110241e+08 0.079678613 0.027807722 -45.000408 37.740586 6657.3652 6.9226327e+08 0.078232372 0.029324787 -45.059659 37.644303 6659.2525 6.6543160e+08 0.076899860 0.031781925 -45.118903 37.548031 6661.1398 6.3804202e+08 0.075756257 0.032606135 -45.178147 37.451760 6663.0270 6.1148204e+08 0.074779730 0.032475724 -45.239349 37.349128 6664.9143 5.8331834e+08 0.074215076 0.028860765 -45.302828 37.239099 6666.8015 5.5215702e+08 0.073956085 0.027064786 -45.365886 37.130436 6668.6888 5.2548959e+08 0.072952867 0.028080314 -45.425130 37.034165 6670.5761 5.0078297e+08 0.072897560 0.027061753 -45.484374 36.937894 6672.4633 4.7882896e+08 0.072582075 0.027148147 -45.542142 36.841622 6674.3506 4.5961251e+08 0.071549301 0.029250526 -45.597682 36.745350 6676.2378 4.3699890e+08 0.069493870 0.031867008 -45.653223 36.649077 6678.1251 4.1948504e+08 0.068642786 0.030852945 -45.708764 36.552805 6680.0124 4.0475166e+08 0.068761836 0.029444084 -45.764306 36.456534 6681.8996 3.8987454e+08 0.069286856 0.030347527 -45.819848 36.360263 6683.7869 3.7585306e+08 0.069415605 0.032341749 -45.875390 36.263990 6685.6741 3.6033336e+08 0.068942644 0.033416885 -45.930932 36.167718 6687.5614 3.4127073e+08 0.066976827 0.034029808 -45.986474 36.071445 6689.4486 3.2646294e+08 0.064785439 0.033612170 -46.042015 35.975174 6691.3359 3.1155094e+08 0.064015999 0.032922011 -46.097556 35.878902 6693.2232 2.9890579e+08 0.063408513 0.031527529 -46.153097 35.782630 6695.1104 2.9112743e+08 0.063068870 0.029839190 -46.208640 35.686359 6696.9977 2.7949624e+08 0.062693783 0.030090302 -46.264182 35.590088 6698.8849 2.7119183e+08 0.061657243 0.031432501 -46.316408 35.497131 6700.7722 2.6370551e+08 0.060167376 0.031240481 -46.368246 35.404562 6702.6595 2.5709077e+08 0.059608127 0.033403311 -46.422349 35.308596 6704.5467 2.4751239e+08 0.059873560 0.036446021 -46.485827 35.198568 6706.4340 2.3115438e+08 0.059833651 0.039201706 -46.549305 35.088540 6708.3212 2.1425616e+08 0.059627253 0.040393392 -46.603105 34.989950 6710.2085 1.9940270e+08 0.058632111 0.040537305 -46.654944 34.893678 6712.0958 1.9406495e+08 0.056783734 0.042007739 -46.707268 34.797404 6713.9830 1.8668020e+08 0.054943643 0.047241965 -46.762817 34.701117 6715.8703 1.8120480e+08 0.053543795 0.048268676 -46.818366 34.604830 6717.7575 1.7618698e+08 0.051761753 0.049827412 -46.872318 34.508550 6719.6448 1.6887580e+08 0.050426685 0.050757243 -46.924158 34.412279 6721.5320 1.6407064e+08 0.050723816 0.050464207 -46.975998 34.316008 6723.4193 1.5552880e+08 0.049465293 0.049602798 -47.033242 34.209696 6725.3066 1.4641592e+08 0.045698524 0.041384524 -47.092488 34.099667 6727.1938 1.3934908e+08 0.044478001 0.040702159 -47.149016 33.996043 6729.0811 1.3656253e+08 0.044206821 0.040991384 -47.200854 33.903474 6730.9683 1.3110401e+08 0.042696136 0.041706616 -47.252693 33.810905 6732.8556 1.2723029e+08 0.041737256 0.043897722 -47.302065 33.715870 6734.7429 1.2151444e+08 0.041720933 0.049308904 -47.350202 33.619598 6736.6301 1.1559499e+08 0.043409044 0.052737200 -47.398339 33.523326 6738.5174 1.1461504e+08 0.044382933 0.060169482 -47.457200 33.413773 6740.4046 1.0976909e+08 0.043981528 0.064741610 -47.516445 33.303745 6742.2919 1.0521929e+08 0.041797064 0.069322004 -47.571229 33.202004 6744.1792 1.0026720e+08 0.037869672 0.077931982 -47.623067 33.105733 6746.0664 93300379. 0.036947692 0.078215177 -47.674906 33.009462 6747.9537 87881914. 0.033295478 0.067032849 -47.723406 32.916529 6749.8409 83191835. 0.031214311 0.072047686 -47.771542 32.823960 6751.7282 76807220. 0.028920873 0.074019553 -47.821061 32.727881 6753.6154 76100914. 0.027627507 0.074968985 -47.876073 32.617854 6755.5027 71433693. 0.025800852 0.074384941 -47.931086 32.507828 6757.3900 68456463. 0.024177355 0.075556621 -47.980336 32.409326 6759.2772 68124332. 0.024477633 0.075886853 -48.028473 32.313053 6761.1645 62566594. 0.022183317 0.077981814 -48.078135 32.214891 6763.0517 62335739. 0.029411238 0.076595339 -48.137380 32.104864 6764.9390 58867391. 0.037058544 0.079528270 -48.196625 31.994836