# # 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 = 61.734644 km # Date (UTC) = 2011-11-29T10:01:46.412 # Date (julian) = 2455894.91789828 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.4308 9.9349068e+10 0.074636979 0.034222400 102.40005 33.259894 6509.3728 8.3784691e+10 0.086880420 0.035109549 102.48086 33.098275 6512.3148 7.1006726e+10 0.099306854 0.035996699 102.56167 32.936656 6515.2568 6.0737871e+10 0.11201704 0.036883848 102.64248 32.775037 6518.1988 5.2431526e+10 0.12508937 0.037770998 102.72329 32.613417 6521.1408 4.5662378e+10 0.13859084 0.038658147 102.80410 32.451795 6524.0827 4.0083814e+10 0.14657124 0.039456355 102.88491 32.290176 6527.0247 3.5466106e+10 0.15233630 0.040734427 102.96460 32.128557 6529.9667 3.1565301e+10 0.15612371 0.043775693 103.03964 31.966937 6532.9087 2.8257278e+10 0.15846946 0.047443329 103.11734 31.805317 6535.8507 2.5388896e+10 0.15816532 0.047855264 103.19815 31.643698 6538.7927 2.2883893e+10 0.15947290 0.049542683 103.27475 31.482078 6541.7347 2.0627853e+10 0.15971340 0.051088276 103.34979 31.320473 6544.6767 1.8582777e+10 0.15998723 0.052193283 103.42483 31.164594 6547.6187 1.6786178e+10 0.16027887 0.053522634 103.50140 31.007212 6550.5607 1.5226523e+10 0.16059244 0.055125744 103.58222 30.845569 6553.5027 1.3901243e+10 0.16050754 0.055082390 103.65996 30.683938 6556.4446 1.2747755e+10 0.15907934 0.053947755 103.73500 30.522318 6559.3866 1.1698845e+10 0.15642420 0.052343541 103.81003 30.360698 6562.3286 1.0747355e+10 0.15293144 0.050567205 103.88468 30.199468 6565.2706 9.8774253e+09 0.14955203 0.048011110 103.95395 30.043621 6568.2126 9.1010043e+09 0.14723206 0.045576226 104.02515 29.885839 6571.1546 8.4055051e+09 0.14554082 0.044461052 104.10018 29.724219 6574.0966 7.7665238e+09 0.14346445 0.042808615 104.17522 29.562599 6577.0386 7.1744057e+09 0.14152578 0.040159774 104.25026 29.400979 6579.9806 6.6398413e+09 0.13906128 0.036531435 104.32027 29.244383 6582.9226 6.1697154e+09 0.13690351 0.035042740 104.39033 29.087741 6585.8646 5.7422162e+09 0.13465694 0.033279584 104.46537 28.926120 6588.8065 5.3540764e+09 0.13294391 0.033110583 104.53807 28.764500 6591.7485 4.9883955e+09 0.13037315 0.028357278 104.60733 28.602880 6594.6905 4.6513365e+09 0.12771671 0.025793459 104.67661 28.445129 6597.6325 4.3455697e+09 0.12479041 0.025523130 104.74588 28.289259 6600.5745 4.0528415e+09 0.12391072 0.026170952 104.81515 28.127980 6603.5165 3.7832583e+09 0.12256908 0.026357509 104.88562 27.967562 6606.4585 3.5285960e+09 0.12154821 0.026680077 104.96066 27.811714 6609.4005 3.2984337e+09 0.11762765 0.023824892 105.03020 27.653121 6612.3425 3.0871112e+09 0.11432583 0.024064872 105.09370 27.491502 6615.2845 2.8822769e+09 0.11238872 0.023260284 105.16148 27.334172 6618.2265 2.7064859e+09 0.11050343 0.023941793 105.23066 27.178516 6621.1684 2.5580157e+09 0.10848871 0.025033616 105.29223 27.039981 6624.1104 2.4362846e+09 0.10531737 0.024921423 105.35427 26.900027 6627.0524 2.3175688e+09 0.10256242 0.025337060 105.42354 26.738407 6629.9944 2.1940257e+09 0.10103321 0.025929312 105.49091 26.578688 6632.9364 2.0685762e+09 0.099287444 0.026144628 105.55440 26.422841 6635.8784 1.9542831e+09 0.097580212 0.026531516 105.62134 26.263535 6638.8204 1.8475804e+09 0.096416213 0.025635900 105.69062 26.101891 6641.7624 1.7433499e+09 0.097264771 0.025150889 105.75489 25.945257 6644.7044 1.6467642e+09 0.096330306 0.025419733 105.81915 25.789409 6647.6464 1.5525886e+09 0.095063511 0.026778091 105.88842 25.633563 6650.5883 1.4709653e+09 0.094096616 0.026389927 105.95538 25.477716 6653.5303 1.3920519e+09 0.093393416 0.027796434 106.01887 25.321868 6656.4723 1.3158629e+09 0.091107505 0.028437980 106.08842 25.146762 6659.4143 1.2395857e+09 0.089048707 0.031748171 106.15961 24.966417 6662.3563 1.1620472e+09 0.087213495 0.032844359 106.22310 24.810569 6665.2983 1.0947115e+09 0.086189042 0.028058350 106.28660 24.654721 6668.2403 1.0348010e+09 0.085057433 0.027683418 106.35009 24.498874 6671.1823 9.8173522e+08 0.084313567 0.026867946 106.41358 24.343027 6674.1243 9.3274233e+08 0.083022254 0.029059626 106.47708 24.187179 6677.0663 8.8789801e+08 0.079827335 0.032264013 106.54057 24.031332 6680.0083 8.4619910e+08 0.079509995 0.029443199 106.60406 23.875484 6682.9502 8.0447547e+08 0.080059658 0.031150569 106.66755 23.719636 6685.8922 7.6499658e+08 0.079105001 0.033647262 106.73105 23.563777 6688.8342 7.2697886e+08 0.075095019 0.033977759 106.79455 23.407907 6691.7762 6.9169522e+08 0.073416813 0.032818126 106.85368 23.252053 6694.7182 6.6107062e+08 0.072392844 0.030254416 106.91155 23.096206 6697.6602 6.3124269e+08 0.071740024 0.030174815 106.97504 22.940358 6700.6022 6.0228465e+08 0.069654315 0.031114382 107.03853 22.784510 6703.5442 5.7595613e+08 0.069105313 0.035036956 107.10202 22.628663 6706.4862 5.4803428e+08 0.069128585 0.039292553 107.16690 22.460359 6709.4282 5.1785398e+08 0.068363997 0.040860209 107.23252 22.283214 6712.3702 4.9057537e+08 0.065841219 0.042517215 107.29024 22.127366 6715.3121 4.6415673e+08 0.063331375 0.047697843 107.34975 21.971517 6718.2541 4.4340030e+08 0.060527569 0.050208214 107.41325 21.815670 6721.1961 4.2787914e+08 0.060008239 0.050362993 107.47340 21.659822 6724.1381 4.1085645e+08 0.057531040 0.048773276 107.53112 21.503974 6727.0801 3.9095256e+08 0.053510076 0.040853657 107.59582 21.329284 6730.0221 3.6777071e+08 0.052424837 0.040409205 107.65906 21.160430 6732.9641 3.4708433e+08 0.050670287 0.043917695 107.71678 21.010355 6735.9061 3.3415122e+08 0.051506942 0.050255306 107.77451 20.856829 6738.8481 3.2284381e+08 0.052838534 0.061990125 107.83223 20.700981 6741.7901 3.0843036e+08 0.050737521 0.068012001 107.89709 20.525864 6744.7321 2.8954278e+08 0.045473027 0.078359638 107.96018 20.355523 6747.6740 2.7166930e+08 0.040875573 0.067129113 108.01791 20.199652 6750.6160 2.6129105e+08 0.038046025 0.073056038 108.07563 20.047358 6753.5580 2.5266714e+08 0.034713779 0.074783168 108.13335 19.897283 6756.5000 2.4319955e+08 0.031379184 0.075453529 108.19837 19.722398 6759.4420 2.3250659e+08 0.031883952 0.075926619 108.26129 19.554629 6762.3840 2.2340046e+08 0.036258882 0.077431422 108.31902 19.404552 6765.3260 2.1350148e+08 0.039778259 0.079590704 108.38199 19.236629 6768.2680 2.0410115e+08 0.036761151 0.081820286 108.44627 19.061200 6771.2100 1.9369056e+08 0.030911917 0.089814415 108.49822 18.905352 6774.1520 1.8545511e+08 0.025523788 0.096950036 108.55561 18.743422 6777.0940 1.7937364e+08 0.020086758 0.10408566 108.62157 18.571903 6780.0359 1.7147294e+08 0.014653376 0.11122128 108.68035 18.414055 6782.9779 1.6467726e+08 0.0091841304 0.11835690 108.73831 18.256016 6785.9199 1.5682115e+08 0.0037049407 0.12549252 108.79767 18.084497 6788.8619 1.5030322e+08 -0.0018081581 0.13262814 108.85602 17.926358 6791.8039 1.4500708e+08 -0.0073497788 0.13976376 108.91374 17.776283 6794.7459 1.3992912e+08 -0.012908800 0.14689938 108.97293 17.601210 6797.6879 1.3589020e+08 -0.018481146 0.15403501 109.03230 17.425573 6800.6299 1.2894388e+08 -0.024067337 0.16117063 109.09167 17.254054 6803.5719 1.1972363e+08 -0.029692623 0.16830625 109.15671 17.076863 6806.5139 1.1364011e+08 -0.035328133 0.17544187 109.21786 16.908390 6809.4559 1.0814860e+08 -0.040974473 0.18257749 109.26981 16.758316 6812.3978 1.0391354e+08 -0.046610080 0.18971311 109.32630 16.595130 6815.3398 99902266. -0.052251407 0.19684873 109.38567 16.423611 6818.2818 95618617. -0.057911851 0.20398435 109.44505 16.252093 6821.2238 94221642. -0.063449273 0.21111998 109.50824 16.076750 6824.1658 91521608. -0.069013681 0.21825560 109.57379 15.899056 6827.1078 88433966. -0.074591696 0.22539122 109.63316 15.727536 6830.0498 83081033. -0.080335748 0.23252684 109.69253 15.556018 6832.9918 77846244. -0.086176174 0.23966246 109.75190 15.384500 6835.9338 73473378. -0.092088736 0.24679808 109.81127 15.212981 6838.8758 72037221. -0.097886482 0.25393370 109.87065 15.041463 6841.8178 69684782. -0.10402158 0.26106932 109.93002 14.869945 6844.7597 64302991. -0.11110722 0.26820494 109.98939 14.698426 6847.7017 59362039. -0.11937533 0.27534057 110.04556 14.526908 6850.6437 54658064. -0.13124553 0.28247619 110.09834 14.355390 6853.5857 53727082. -0.17089384 0.28961181 110.15751 14.183871 6856.5277 51663022. -0.14716756 0.29674743 110.21688 14.012352 6859.4697 48011009. -0.084158289 0.30388305 110.27625 13.840833