# # 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 = 57.847776 km # Date (UTC) = 2014-12-20T09:56:23.238 # Date (julian) = 2457011.91415785 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.5524 5.3922584e+10 0.047825684 0.032148244 -29.403332 49.885927 6502.1831 4.8558714e+10 0.056605085 0.032941517 -29.527202 49.775821 6504.8138 4.4217709e+10 0.065472592 0.033734791 -29.648810 49.665715 6507.4445 4.0605771e+10 0.074598233 0.034528064 -29.768093 49.555607 6510.0751 3.7792513e+10 0.084202202 0.035321338 -29.888813 49.445500 6512.7058 3.5083962e+10 0.094306167 0.036114611 -30.012683 49.335394 6515.3365 3.2303556e+10 0.10493482 0.036907885 -30.135942 49.225286 6517.9672 2.9821553e+10 0.11630431 0.037701158 -30.255240 49.115164 6520.5978 2.7564840e+10 0.12847975 0.038494431 -30.374537 49.005042 6523.2285 2.5436878e+10 0.13797807 0.039235748 -30.489442 48.890557 6525.8592 2.3459482e+10 0.14310515 0.039684158 -30.604137 48.775862 6528.4899 2.1609340e+10 0.14876306 0.041831092 -30.722385 48.664720 6531.1205 1.9776538e+10 0.15277060 0.045404125 -30.841667 48.554613 6533.7512 1.8096588e+10 0.15702708 0.047838831 -30.958221 48.444506 6536.3819 1.6517489e+10 0.15897927 0.048132189 -31.072915 48.334401 6539.0126 1.5040112e+10 0.16168901 0.049658841 -31.187616 48.224288 6541.6432 1.3751891e+10 0.16353130 0.051117930 -31.302326 48.114166 6544.2739 1.2574676e+10 0.16441866 0.051866557 -31.415951 48.004048 6546.9046 1.1497599e+10 0.16480514 0.053208863 -31.526057 47.893942 6549.5353 1.0481088e+10 0.16386813 0.054511766 -31.636164 47.783836 6552.1659 9.5538291e+09 0.16254850 0.055544997 -31.746272 47.673728 6554.7966 8.7152620e+09 0.16035809 0.054849097 -31.856379 47.563621 6557.4273 7.9905833e+09 0.15809050 0.053598273 -31.966486 47.453515 6560.0580 7.3500167e+09 0.15570362 0.052222034 -32.076592 47.343409 6562.6887 6.7597616e+09 0.15297196 0.050224624 -32.186709 47.230096 6565.3193 6.2411713e+09 0.15080007 0.047955793 -32.296829 47.115386 6567.9500 5.7737021e+09 0.14932006 0.045813933 -32.404571 47.003057 6570.5807 5.3697883e+09 0.14817042 0.044676970 -32.510091 46.892949 6573.2114 5.0166380e+09 0.14678333 0.043487871 -32.615611 46.782843 6575.8420 4.7041129e+09 0.14483106 0.041529882 -32.721130 46.672737 6578.4727 4.4040422e+09 0.14267893 0.037903147 -32.826649 46.562631 6581.1034 4.1326046e+09 0.14041859 0.035565302 -32.932167 46.452523 6583.7341 3.8762424e+09 0.13864707 0.034650116 -33.037686 46.342416 6586.3647 3.6481747e+09 0.13663648 0.033166581 -33.143219 46.227807 6588.9954 3.4364865e+09 0.13463790 0.033047508 -33.248752 46.113097 6591.6261 3.2265149e+09 0.13187597 0.028495437 -33.350610 46.002063 6594.2568 3.0381584e+09 0.12891745 0.026031570 -33.451541 45.891955 6596.8874 2.8611272e+09 0.12548748 0.025723239 -33.552472 45.781849 6599.5181 2.6986587e+09 0.12314323 0.024960893 -33.653402 45.671743 6602.1488 2.5505960e+09 0.12180500 0.027389655 -33.754339 45.559615 6604.7795 2.4078353e+09 0.11966584 0.026534103 -33.855284 45.444905 6607.4102 2.2780694e+09 0.11742941 0.024897102 -33.955033 45.331391 6610.0408 2.1575132e+09 0.11376095 0.024041988 -34.051376 45.221284 6612.6715 2.0377076e+09 0.11172626 0.023819030 -34.147719 45.111176 6615.3022 1.9280438e+09 0.11065403 0.023260829 -34.244062 45.001071 6617.9329 1.8220015e+09 0.10988737 0.023748535 -34.340405 44.890965 6620.5635 1.7247782e+09 0.10924110 0.024948795 -34.440880 44.780858 6623.1942 1.6389368e+09 0.10766133 0.024563777 -34.541812 44.670750 6625.8249 1.5616824e+09 0.10609842 0.026381939 -34.636139 44.557325 6628.4556 1.4857129e+09 0.10411414 0.025888057 -34.727907 44.442616 6631.0862 1.4087941e+09 0.10212624 0.025939526 -34.828671 44.322947 6633.7169 1.3233203e+09 0.10046715 0.026277419 -34.937059 44.199076 6636.3476 1.2445142e+09 0.098653677 0.026414769 -35.035404 44.083516 6638.9783 1.1705649e+09 0.097229649 0.025629022 -35.127160 43.973409 6641.6089 1.1090491e+09 0.097654991 0.025150368 -35.220861 43.861356 6644.2396 1.0582360e+09 0.096210613 0.025369504 -35.317205 43.746661 6646.8703 1.0059707e+09 0.094573724 0.026370640 -35.411306 43.633087 6649.5010 9.6510060e+08 0.092857240 0.026943123 -35.498474 43.522980 6652.1316 9.2322670e+08 0.091769111 0.027286742 -35.585941 43.412871 6654.7623 8.8723137e+08 0.090045582 0.027711469 -35.677707 43.302751 6657.3930 8.5234565e+08 0.087195454 0.029356979 -35.769473 43.192631 6660.0237 8.0784766e+08 0.084918804 0.031647518 -35.871386 43.065767 6662.6544 7.6127443e+08 0.082705944 0.032677141 -35.974613 42.936733 6665.2850 7.1848447e+08 0.081578422 0.028080101 -36.062619 42.825638 6667.9157 6.7842379e+08 0.080755693 0.027439812 -36.149786 42.715530 6670.5464 6.4738477e+08 0.080150683 0.027075503 -36.236955 42.601899 6673.1771 6.1881275e+08 0.079754694 0.027724020 -36.324124 42.487205 6675.8077 5.9542473e+08 0.077388763 0.031345464 -36.411298 42.375202 6678.4384 5.7359623e+08 0.075977649 0.030643386 -36.498477 42.265082 6681.0691 5.4691263e+08 0.076742674 0.029710360 -36.590109 42.149336 6683.6998 5.1771832e+08 0.077243450 0.032214091 -36.688175 42.025464 6686.3304 4.8718581e+08 0.076359687 0.033953339 -36.778939 41.905918 6688.9611 4.6359128e+08 0.072898414 0.034007048 -36.861518 41.791223 6691.5918 4.4161836e+08 0.071665024 0.032861639 -36.948616 41.673851 6694.2225 4.1943089e+08 0.070491008 0.030949226 -37.046683 41.549980 6696.8531 3.9338431e+08 0.070092822 0.030030250 -37.139262 41.430986 6699.4838 3.7130693e+08 0.068440946 0.031144004 -37.221842 41.320878 6702.1145 3.5178398e+08 0.066399552 0.032968156 -37.304422 41.209970 6704.7452 3.3906252e+08 0.066632811 0.036543473 -37.387002 41.095276 6707.3758 3.2946839e+08 0.066030997 0.040132986 -37.469604 40.980562 6710.0065 3.1289407e+08 0.064765305 0.040497772 -37.562449 40.856738 6712.6372 2.9727439e+08 0.062110805 0.043013030 -37.654505 40.733643 6715.2679 2.8492505e+08 0.059527683 0.047652566 -37.732497 40.623536 6717.8986 2.7469118e+08 0.056822885 0.049818689 -37.810488 40.513429 6720.5292 2.6538845e+08 0.055579615 0.050358446 -37.901573 40.386704 6723.1599 2.5587215e+08 0.054456860 0.049458127 -37.994477 40.257670 6725.7906 2.4080207e+08 0.049942784 0.041082180 -38.082526 40.133491 6728.4213 2.2965322e+08 0.049093888 0.040225162 -38.170228 40.009674 6731.0519 2.2027902e+08 0.047287037 0.041853387 -38.248231 39.899554 6733.6826 2.1071666e+08 0.045887773 0.047630407 -38.326225 39.789448 6736.3133 2.0275484e+08 0.047616756 0.051539411 -38.412245 39.668006 6738.9440 1.9420983e+08 0.048819552 0.062518051 -38.499986 39.544133 6741.5746 1.8152075e+08 0.047143029 0.067397600 -38.587742 39.415672 6744.2053 1.7173145e+08 0.042000605 0.077952219 -38.675498 39.286619 6746.8360 1.6451221e+08 0.037625059 0.069267921 -38.749639 39.175542 6749.4667 1.5336806e+08 0.036023625 0.072150159 -38.823043 39.065436 6752.0973 1.4780960e+08 0.031954530 0.074021829 -38.907473 38.944743 6754.7280 1.4207740e+08 0.030328048 0.075042720 -38.995215 38.820871 6757.3587 1.3788229e+08 0.027701535 0.075651502 -39.078666 38.692706 6759.9894 1.3521643e+08 0.028727847 0.076058707 -39.161248 38.563672 6762.6201 1.2624240e+08 0.033379691 0.077050652 -39.243831 38.439254 6765.2507 1.1839109e+08 0.036485873 0.079576964 -39.326414 38.315383 6767.8814 1.1247389e+08 0.034457987 0.080988822 -39.408995 38.191510 6770.5121 1.0776161e+08 0.028980828 0.088121719 -39.491402 38.067900 6773.1428 1.0752249e+08 0.024190396 0.094502266 -39.564816 37.957779 6775.7734 1.0501635e+08 0.019430574 0.10088281 -39.638230 37.847659 6778.4041 1.0035479e+08 0.014707891 0.10726336 -39.719341 37.721659 6781.0348 95104169. 0.010026382 0.11364391 -39.801922 37.592625 6783.6655 90522661. 0.0053841634 0.12002445 -39.884504 37.468247 6786.2961 88195630. 0.00077082370 0.12640500 -39.967086 37.344373 6788.9268 84495730. -0.0038114705 0.13278554 -40.044687 37.220500 6791.5575 77049428. -0.0083592437 0.13916609 -40.122106 37.096628 6794.1882 71780792. -0.012914717 0.14554664 -40.199527 36.972757 6796.8188 70313857. -0.017494479 0.15192718 -40.277940 36.847297 6799.4495 68361085. -0.022063659 0.15830773 -40.366420 36.705725 6802.0802 64899421. -0.026614884 0.16468828 -40.450538 36.569099 6804.7109 61059805. -0.031162609 0.17106882 -40.527960 36.440065 6807.3415 59771945. -0.035732232 0.17744937 -40.605381 36.313391 6809.9722 59012841. -0.040304683 0.18382992 -40.682801 36.189520 6812.6029 57036312. -0.044870363 0.19021046 -40.760221 36.065648 6815.2336 53550362. -0.049429493 0.19659101 -40.837640 35.941775 6817.8643 52018887. -0.054017887 0.20297156 -40.921498 35.807602 6820.4949 51262577. -0.058629853 0.20935210 -41.009981 35.666032 6823.1256 49910609. -0.063269233 0.21573265 -41.084077 35.540156 6825.7563 48145160. -0.067960579 0.22211320 -41.156335 35.416283 6828.3870 44205523. -0.072726990 0.22849374 -41.233505 35.292392 6831.0176 43487023. -0.078048585 0.23487429 -41.311000 35.168214 6833.6483 41846255. -0.086637450 0.24125484 -41.393569 35.020770 6836.2790 42967470. -0.087996075 0.24763538 -41.472877 34.880782 6838.9097 44193275. -0.086035516 0.25401593 -41.545146 34.756892