# # 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 = 44.149434 km # Date (UTC) = 2010-12-21T09:19:14.229 # Date (julian) = 2455551.88835913 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.0391 9.6779847e+10 0.099503491 0.035310466 111.58783 36.309797 6512.8558 7.8852481e+10 0.11248839 0.036159845 111.67525 36.174012 6515.6725 6.4774105e+10 0.12564905 0.037009224 111.76920 36.024800 6518.4893 5.3721800e+10 0.13905195 0.037858603 111.85446 35.887747 6521.3060 4.5155878e+10 0.15278582 0.038707981 111.93306 35.760029 6524.1227 3.8767113e+10 0.16090595 0.039470567 112.01166 35.629707 6526.9395 3.3622448e+10 0.16701795 0.040653025 112.09025 35.497076 6529.7562 2.9387905e+10 0.17106877 0.043440374 112.16885 35.366864 6532.5730 2.5837641e+10 0.17410002 0.047162834 112.24746 35.239127 6535.3897 2.2817770e+10 0.17475178 0.048055252 112.32606 35.109146 6538.2064 2.0273834e+10 0.17526103 0.049257198 112.40466 34.976516 6541.0232 1.8101498e+10 0.17468487 0.051319019 112.48325 34.845964 6543.8399 1.6286043e+10 0.17356530 0.051602327 112.56185 34.718244 6546.6566 1.4628007e+10 0.17251781 0.053004824 112.64211 34.582199 6549.4734 1.3064359e+10 0.17093274 0.054448672 112.72501 34.432986 6552.2901 1.1635376e+10 0.16887491 0.055513750 112.80543 34.296185 6555.1068 1.0398728e+10 0.16519277 0.054763602 112.88403 34.168450 6557.9236 9.3921228e+09 0.15955586 0.053287214 112.95997 34.038059 6560.7403 8.5302369e+09 0.15253067 0.051606834 113.03365 33.905428 6563.5570 7.7553795e+09 0.14615081 0.049284007 113.10982 33.775287 6566.3738 7.0603432e+09 0.14131379 0.046971444 113.18842 33.647569 6569.1905 6.4489951e+09 0.13829584 0.044864823 113.26470 33.517537 6572.0072 5.9035002e+09 0.13614918 0.044226011 113.33839 33.384906 6574.8240 5.3822898e+09 0.13321389 0.042459253 113.41608 33.247462 6577.6407 4.8770949e+09 0.13005629 0.039213977 113.49897 33.103775 6580.4574 4.4105893e+09 0.12678899 0.036098011 113.57304 32.970070 6583.2742 3.9992830e+09 0.12410035 0.034882891 113.64182 32.842335 6586.0909 3.6643388e+09 0.12117048 0.033170121 113.71349 32.711710 6588.9076 3.3730409e+09 0.11872836 0.033076819 113.78718 32.579079 6591.7244 3.1072562e+09 0.11548366 0.028384531 113.86086 32.449171 6594.5411 2.8676480e+09 0.11217877 0.025875477 113.93455 32.321452 6597.3578 2.6495930e+09 0.10858280 0.025609803 114.00568 32.193733 6600.1746 2.4538222e+09 0.10679129 0.025348788 114.07445 32.066015 6602.9913 2.2557765e+09 0.10517924 0.026670682 114.14738 31.927901 6605.8081 2.0604147e+09 0.10364429 0.027342936 114.22477 31.778667 6608.6248 1.8778666e+09 0.099987028 0.023715852 114.29634 31.643931 6611.4415 1.7214641e+09 0.095746932 0.024676895 114.36512 31.516212 6614.2583 1.5938995e+09 0.093648182 0.023762563 114.43702 31.388493 6617.0750 1.4773144e+09 0.091198615 0.023464113 114.51071 31.260775 6619.8917 1.3731795e+09 0.089583880 0.024741073 114.58143 31.133056 6622.7085 1.2764018e+09 0.087187574 0.024569424 114.65020 31.005338 6625.5252 1.1834623e+09 0.085015584 0.026024321 114.72071 30.868571 6628.3419 1.0898309e+09 0.083060010 0.025841922 114.79256 30.724885 6631.1587 1.0034884e+09 0.081507071 0.025946883 114.86208 30.593277 6633.9754 9.2700707e+08 0.080225102 0.026322548 114.93086 30.465541 6636.7921 8.6699102e+08 0.078933037 0.026242134 114.99963 30.334272 6639.6089 8.0843164e+08 0.078619259 0.025410451 115.06840 30.201641 6642.4256 7.4803115e+08 0.079276259 0.025169113 115.13929 30.061426 6645.2423 6.9241194e+08 0.078456189 0.025565211 115.21113 29.917739 6648.0591 6.4095028e+08 0.077449295 0.027003828 115.28028 29.788049 6650.8758 6.0009842e+08 0.076800100 0.026455734 115.34905 29.660330 6653.6925 5.6389135e+08 0.076342168 0.027879249 115.41370 29.532597 6656.5093 5.3079725e+08 0.074346819 0.028470407 115.47757 29.404862 6659.3260 4.9651228e+08 0.072600967 0.031766592 115.54786 29.264281 6662.1427 4.6364062e+08 0.071056037 0.032964182 115.61969 29.120621 6664.9595 4.3336423e+08 0.070248092 0.028695387 115.68360 28.992811 6667.7762 4.0490923e+08 0.069704789 0.027388575 115.74745 28.865091 6670.5930 3.8051969e+08 0.069093015 0.027053928 115.81131 28.737373 6673.4097 3.5726179e+08 0.068554458 0.028071931 115.87517 28.609654 6676.2264 3.3512392e+08 0.065944276 0.031859650 115.94641 28.467175 6679.0432 3.1321862e+08 0.064794767 0.030232111 116.01734 28.325324 6681.8599 2.9216677e+08 0.066073859 0.030317052 116.08120 28.197605 6684.6766 2.7322487e+08 0.066313052 0.032688428 116.14569 28.068621 6687.4934 2.5635652e+08 0.064283305 0.034067749 116.21754 27.924912 6690.3101 2.4167184e+08 0.061947004 0.033080327 116.28591 27.786847 6693.1268 2.2771601e+08 0.061074373 0.031560579 116.34486 27.664040 6695.9436 2.1187357e+08 0.060783824 0.029686152 116.40683 27.536343 6698.7603 1.9930848e+08 0.059694420 0.031261412 116.47867 27.392657 6701.5770 1.8820588e+08 0.057690200 0.032256115 116.54503 27.255753 6704.3938 1.7738050e+08 0.058054773 0.036370913 116.60398 27.128035 6707.2105 1.6718521e+08 0.057945845 0.040156672 116.66795 26.994105 6710.0272 1.5501972e+08 0.056962466 0.040501826 116.73979 26.850419 6712.8440 1.4285058e+08 0.054466034 0.043396929 116.80843 26.706733 6715.6607 1.3379574e+08 0.051999464 0.048054338 116.87475 26.563047 6718.4774 1.2394777e+08 0.049235966 0.050555989 116.93540 26.435426 6721.2942 1.1501246e+08 0.049063213 0.050392535 116.99435 26.312604 6724.1109 1.0969723e+08 0.046706247 0.049000503 117.05871 26.174456 6726.9276 1.0269322e+08 0.042630749 0.040959734 117.12503 26.030770 6729.7444 99174941. 0.041674673 0.040549281 117.19134 25.887084 6732.5611 94657028. 0.039710465 0.043843508 117.25766 25.743398 6735.3778 90291464. 0.039990390 0.049694545 117.32398 25.599711 6738.1946 86914887. 0.041770576 0.058392353 117.38804 25.462415 6741.0113 80891478. 0.040741898 0.065790965 117.44699 25.339609 6743.8281 73285826. 0.035207158 0.076633449 117.50643 25.211158 6746.6448 67185983. 0.030856455 0.071490924 117.56722 25.067472 6749.4615 65957387. 0.028224761 0.072151568 117.63056 24.926324 6752.2783 64551573. 0.023857380 0.073812483 117.69689 24.788144 6755.0950 60501271. 0.021263245 0.074563699 117.76321 24.646376 6757.9117 58203240. 0.017747591 0.073973216 117.82952 24.502690 6760.7285 53076357. 0.0068033636 0.077450408 117.89119 24.359003 6763.5452 51352554. 0.022405380 0.078098162 117.95216 24.215497 6766.3619 48287941. 0.046466038 0.080532435 118.01848 24.077337