# # 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 = 52.089758 km # Date (UTC) = 2016-01-11T10:02:38.893 # Date (julian) = 2457398.91850571 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.5596 6.3866926e+10 0.050697048 0.032753517 105.17847 35.582757 6503.8987 5.7184465e+10 0.060567658 0.033458859 105.25200 35.454002 6506.2378 5.1570649e+10 0.070759690 0.034164202 105.32542 35.325502 6508.5769 4.7156726e+10 0.081434931 0.034869545 105.39517 35.197004 6510.9160 4.3165317e+10 0.092496228 0.035574888 105.46401 35.068506 6513.2550 3.9609671e+10 0.10398974 0.036280231 105.53285 34.942865 6515.5941 3.6303318e+10 0.11587377 0.036985574 105.60169 34.818955 6517.9332 3.3231359e+10 0.12813936 0.037690916 105.67053 34.693011 6520.2723 3.0494427e+10 0.14083408 0.038396259 105.73937 34.564513 6522.6114 2.8000933e+10 0.15223013 0.039077340 105.80821 34.437229 6524.9504 2.5691573e+10 0.15973321 0.039764605 105.87705 34.313319 6527.2895 2.3500405e+10 0.16511683 0.040926656 105.94549 34.189018 6529.6286 2.1408756e+10 0.16974909 0.043237066 106.00974 34.060518 6531.9677 1.9546852e+10 0.17405925 0.046637125 106.07399 33.932018 6534.3067 1.7900927e+10 0.17611280 0.048030365 106.14240 33.803520 6536.6458 1.6412466e+10 0.17704192 0.048368333 106.21124 33.675023 6538.9849 1.5029317e+10 0.17744059 0.049636275 106.27674 33.549862 6541.3240 1.3738994e+10 0.17651996 0.051221466 106.34099 33.425953 6543.6631 1.2563241e+10 0.17423487 0.051555915 106.40524 33.299516 6546.0021 1.1506335e+10 0.17117301 0.052466281 106.46950 33.170999 6548.3412 1.0547750e+10 0.16906106 0.053769543 106.53376 33.044186 6550.6803 9.6660138e+09 0.16666541 0.055155698 106.59801 32.920277 6553.0194 8.8761528e+09 0.16466600 0.055325331 106.66226 32.796368 6555.3584 8.1660004e+09 0.16213783 0.054552184 106.72650 32.672458 6557.6975 7.5214600e+09 0.15959244 0.053428897 106.79075 32.548490 6560.0366 6.9385319e+09 0.15682555 0.052241307 106.85500 32.419997 6562.3757 6.3956459e+09 0.15363716 0.050522429 106.91925 32.291499 6564.7148 5.9135503e+09 0.15078406 0.048447668 106.98350 32.166822 6567.0538 5.4877026e+09 0.14842152 0.046571667 107.04775 32.042912 6569.3929 5.0890235e+09 0.14621784 0.044877997 107.11200 31.916003 6571.7320 4.7232972e+09 0.14440492 0.044303353 107.17625 31.787504 6574.0711 4.3945241e+09 0.14170234 0.042820870 107.23517 31.667720 6576.4102 4.1404336e+09 0.13903996 0.040899302 107.28820 31.557581 6578.7492 3.9280693e+09 0.13561292 0.037466495 107.34149 31.447122 6581.0883 3.7199420e+09 0.13236202 0.035569869 107.40574 31.323213 6583.4274 3.4952004e+09 0.12963868 0.034805343 107.46999 31.199304 6585.7665 3.2601867e+09 0.12663643 0.033358003 107.53038 31.071503 6588.1055 3.0467770e+09 0.12409026 0.033344685 107.59004 30.942985 6590.4446 2.8452569e+09 0.12071259 0.030235005 107.64971 30.817534 6592.7837 2.6591812e+09 0.11716276 0.027312316 107.70936 30.693625 6595.1228 2.4848937e+09 0.11363924 0.025636303 107.76902 30.569716 6597.4619 2.3374341e+09 0.11041771 0.025576983 107.82869 30.445808 6599.8009 2.2020931e+09 0.10909406 0.024977902 107.88835 30.320488 6602.1400 2.0825753e+09 0.10877736 0.027397153 107.94801 30.191989 6604.4791 1.9693072e+09 0.10770489 0.026355744 108.00767 30.064080 6606.8182 1.8611880e+09 0.10700935 0.026033742 108.06732 29.940170 6609.1572 1.7622450e+09 0.10402373 0.023752641 108.12698 29.816261 6611.4963 1.6623823e+09 0.10138590 0.024641948 108.18664 29.692352 6613.8354 1.5727367e+09 0.10048063 0.023880101 108.24631 29.568444 6616.1745 1.4865002e+09 0.099046046 0.023309684 108.30597 29.444535 6618.5136 1.4071064e+09 0.098489188 0.024158594 108.36562 29.320625 6620.8526 1.3279507e+09 0.097777288 0.025041959 108.42257 29.196716 6623.1917 1.2564462e+09 0.096255592 0.024562854 108.47764 29.072806 6625.5308 1.1898988e+09 0.094849945 0.026031000 108.53461 28.948889 6627.8699 1.1269816e+09 0.092994937 0.025652828 108.59428 28.824961 6630.2090 1.0711671e+09 0.091479793 0.025928817 108.65287 28.701038 6632.5480 1.0139438e+09 0.089737848 0.026098058 108.70794 28.577129 6634.8871 9.6736033e+08 0.088110545 0.026391553 108.76302 28.452968 6637.2262 9.2346353e+08 0.086390082 0.026050633 108.81808 28.324471 6639.5653 8.7928420e+08 0.085596399 0.025426037 108.87315 28.195973 6641.9043 8.3762538e+08 0.085738272 0.025151371 108.92822 28.071493 6644.2434 7.9415343e+08 0.084467741 0.025369915 108.98330 27.947583 6646.5825 7.5420461e+08 0.083177189 0.026221667 109.03837 27.823673 6648.9216 7.1474486e+08 0.081860599 0.027581190 109.09344 27.699764 6651.2607 6.7898560e+08 0.081599778 0.026683919 109.14851 27.575855 6653.5997 6.4501580e+08 0.081306797 0.027831863 109.20358 27.451947 6655.9388 6.1717677e+08 0.079756136 0.027998135 109.25865 27.328038 6658.2779 5.8940107e+08 0.078372168 0.030553921 109.31372 27.204129 6660.6170 5.6139744e+08 0.077025053 0.032186791 109.36879 27.080220 6662.9560 5.3615756e+08 0.075841346 0.032507874 109.42386 26.956310 6665.2951 5.0895579e+08 0.075351225 0.028063560 109.47894 26.832400 6667.6342 4.7896634e+08 0.074925921 0.027336411 109.54172 26.696272 6669.9733 4.4533155e+08 0.074434217 0.027356076 109.60408 26.560826 6672.3124 4.1773426e+08 0.074254416 0.027060648 109.65915 26.436917 6674.6514 3.9677354e+08 0.073026460 0.029504321 109.71422 26.313008 6676.9905 3.8131260e+08 0.070576963 0.032352105 109.76519 26.189083 6679.3296 3.6559054e+08 0.070086675 0.029995410 109.81568 26.065156 6681.6687 3.4813577e+08 0.070995765 0.030170353 109.86945 25.941242 6684.0077 3.3085511e+08 0.071152360 0.032654485 109.92452 25.817332 6686.3468 3.1465932e+08 0.070094513 0.033962874 109.97712 25.693423 6688.6859 2.9539643e+08 0.067000299 0.033943521 110.02760 25.569513 6691.0250 2.8151599e+08 0.065455879 0.032995368 110.07809 25.445603 6693.3641 2.6995024e+08 0.064193924 0.031479193 110.12857 25.321694 6695.7031 2.6162344e+08 0.063407279 0.029730315 110.17987 25.198607 6698.0422 2.5660348e+08 0.062195923 0.030275768 110.23494 25.079287 6700.3813 2.5053897e+08 0.060023626 0.030950537 110.29002 24.959927 6702.7204 2.4166664e+08 0.058776723 0.033451953 110.34771 24.818349 6705.0595 2.2708825e+08 0.058805667 0.036774303 110.40473 24.678394 6707.3985 2.1107270e+08 0.058187158 0.040129737 110.45521 24.554485 6709.7376 1.9906716e+08 0.056962956 0.040663387 110.50569 24.430576 6712.0767 1.9291343e+08 0.054465244 0.041972344 110.55618 24.310864 6714.4158 1.8787013e+08 0.051989240 0.047334666 110.60666 24.191543 6716.7548 1.8250252e+08 0.049670942 0.049513178 110.65714 24.068847 6719.0939 1.7443888e+08 0.046898935 0.051280604 110.70762 23.944938 6721.4330 1.6399615e+08 0.046929997 0.050434364 110.76212 23.811174 6723.7721 1.5508332e+08 0.044787490 0.049799546 110.81981 23.669562 6726.1112 1.4446067e+08 0.040250548 0.040952370 110.86983 23.542440 6728.4502 1.3662567e+08 0.039169953 0.040266232 110.91572 23.423120 6730.7893 1.3114412e+08 0.037178603 0.041461150 110.96378 23.301638 6733.1284 1.2867650e+08 0.035712289 0.044621388 111.01426 23.177728 6735.4675 1.2726972e+08 0.036249219 0.049789687 111.06685 23.050180 6737.8065 1.2408028e+08 0.037732244 0.056704848 111.12454 22.913812 6740.1456 1.1860161e+08 0.037370717 0.064299141 111.17769 22.782238 6742.4847 1.1212000e+08 0.034216314 0.069791828 111.22359 22.658310 6744.8238 1.0892600e+08 0.030112606 0.078430588 111.27193 22.531811 6747.1629 1.0488102e+08 0.025371816 0.067305094 111.32962 22.395442 6749.5019 1.0380510e+08 0.024448864 0.072140501 111.38378 22.262813 6751.8410 1.0001465e+08 0.020904908 0.074067258 111.42967 22.138905 6754.1801 95771387. 0.019423368 0.075923853 111.47699 22.013487 6756.5192 89362754. 0.016493196 0.075502824 111.53468 21.877119 6758.8583 84195002. 0.016802142 0.075520213 111.58985 21.743423 6761.1973 83265682. 0.018158335 0.077984528 111.63574 21.619513 6763.5364 78738240. 0.023219243 0.078071412 111.68186 21.495160 6765.8755 75222107. 0.025280043 0.079691017 111.73431 21.358792 6768.2146 70912085. 0.021684609 0.081628086 111.78651 21.224621 6770.5536 67955935. 0.016509542 0.088222533 111.83699 21.105301 6772.8927 68594693. 0.012156986 0.093895826 111.88747 20.985981 6775.2318 65293562. 0.0068272565 0.099569119 111.93982 20.845485 6777.5709 61848190. 0.00077265405 0.10524241 111.99198 20.704836 6779.9100 59349926. -0.0062433532 0.11091571 112.03788 20.585516 6782.2490 57768500. -0.015104926 0.11658900 112.08377 20.466197 6784.5881 52535642. -0.031701544 0.12226229 112.13533 20.332142 6786.9272 50617111. -0.099634187 0.12793558 112.18778 20.195774 6789.2663 48243745. -0.055316864 0.13360888 112.24023 20.054382 6791.6053 48958006. 0.057240789 0.13928217 112.29268 19.913036