# # 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 = 49.947124 km # Date (UTC) = 2015-11-26T09:59:40.639 # Date (julian) = 2457352.91644259 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.7593 5.5751574e+10 0.060450972 0.033416824 106.30571 26.848711 6505.9664 5.1644407e+10 0.070465582 0.034082366 106.35767 26.725439 6508.1735 4.7665982e+10 0.080759164 0.034747908 106.40963 26.604191 6510.3806 4.3839360e+10 0.091308271 0.035413450 106.46159 26.482943 6512.5877 4.0266849e+10 0.10215444 0.036078992 106.51356 26.361695 6514.7948 3.6927663e+10 0.11329824 0.036744534 106.56552 26.240447 6517.0019 3.3809986e+10 0.12473479 0.037410076 106.61354 26.115225 6519.2090 3.0941425e+10 0.13647688 0.038075618 106.66118 25.989629 6521.4160 2.8376186e+10 0.14855183 0.038741160 106.71143 25.866663 6523.6231 2.6071202e+10 0.15625186 0.039333555 106.76340 25.745415 6525.8302 2.3986119e+10 0.16163182 0.039687463 106.81408 25.624168 6528.0373 2.2081263e+10 0.16743799 0.041472083 106.86171 25.502919 6530.2444 2.0314771e+10 0.17192095 0.044170854 106.90935 25.381668 6532.4515 1.8686576e+10 0.17543810 0.047061364 106.95698 25.256154 6534.6586 1.7119228e+10 0.17720868 0.048128788 107.00461 25.130577 6536.8657 1.5600092e+10 0.17776841 0.048565038 107.05517 25.007930 6539.0728 1.4193130e+10 0.17765897 0.049731702 107.10713 24.886682 6541.2798 1.2992533e+10 0.17658767 0.051235776 107.15556 24.770387 6543.4869 1.2047756e+10 0.17456382 0.051509692 107.19790 24.662614 6545.6940 1.1290673e+10 0.17203581 0.052461785 107.24024 24.554840 6547.9011 1.0605855e+10 0.17002375 0.053630043 107.28665 24.436698 6550.1082 9.8944510e+09 0.16815769 0.055012453 107.33429 24.315450 6552.3153 9.1590439e+09 0.16601058 0.055507407 107.38192 24.192201 6554.5224 8.4812643e+09 0.16360937 0.054843342 107.42956 24.066604 6556.7295 7.8604400e+09 0.16126466 0.053905879 107.47720 23.941664 6558.9366 7.3164821e+09 0.15840743 0.052441236 107.52484 23.820417 6561.1437 6.8108280e+09 0.15551846 0.051301891 107.57247 23.699171 6563.3507 6.3268467e+09 0.15293780 0.049522637 107.62010 23.577923 6565.5578 5.8836992e+09 0.15043931 0.047684970 107.66774 23.456675 6567.7649 5.4719693e+09 0.14850980 0.045970426 107.71537 23.335427 6569.9720 5.1129293e+09 0.14676802 0.044915687 107.76300 23.214180 6572.1791 4.7843129e+09 0.14467421 0.044127589 107.80967 23.092933 6574.3862 4.4870042e+09 0.14201664 0.042669519 107.85297 22.971685 6576.5933 4.2039798e+09 0.13942197 0.040688515 107.89627 22.850437 6578.8004 3.9425983e+09 0.13622741 0.037385736 107.94353 22.729189 6581.0075 3.7096925e+09 0.13327268 0.035594350 107.99117 22.607942 6583.2145 3.5028203e+09 0.13079236 0.034913071 108.03880 22.486694 6585.4216 3.3154853e+09 0.12789973 0.033633683 108.08643 22.365448 6587.6287 3.1292413e+09 0.12523611 0.033297671 108.13279 22.244200 6589.8358 2.9379451e+09 0.12225204 0.031387791 108.17609 22.122952 6592.0429 2.7632200e+09 0.11886062 0.028031851 108.21939 22.001717 6594.2500 2.6159791e+09 0.11584390 0.026035288 108.26175 21.893727 6596.4571 2.4986397e+09 0.11285831 0.025725196 108.30410 21.785938 6598.6642 2.3942860e+09 0.11096530 0.025090064 108.34681 21.674606 6600.8713 2.2891431e+09 0.11087530 0.026781035 108.39012 21.557689 6603.0784 2.1796853e+09 0.11002475 0.026616888 108.43342 21.440430 6605.2854 2.0696589e+09 0.10944592 0.026904508 108.47672 21.319183 6607.4925 1.9698335e+09 0.10790622 0.024734426 108.52002 21.197935 6609.6996 1.8716434e+09 0.10500680 0.023913753 108.56332 21.076687 6611.9067 1.7835178e+09 0.10255954 0.024380241 108.60663 20.955439 6614.1138 1.6976546e+09 0.10160989 0.023862087 108.65192 20.834191 6616.3209 1.6169734e+09 0.10013405 0.023332663 108.69956 20.712945 6618.5280 1.5396971e+09 0.099467514 0.024169485 108.74653 20.591698 6620.7351 1.4622453e+09 0.098663702 0.025004073 108.78984 20.470449 6622.9422 1.3886381e+09 0.097177838 0.024507221 108.83314 20.349201 6625.1492 1.3183512e+09 0.095641877 0.025575704 108.87644 20.231598 6627.3563 1.2506099e+09 0.093522795 0.025454459 108.91975 20.114681 6629.5634 1.1844888e+09 0.092223873 0.026007235 108.96305 19.995459 6631.7705 1.1200934e+09 0.090322356 0.026009035 109.00635 19.874212 6633.9776 1.0608421e+09 0.088633072 0.026322933 109.04966 19.752965 6636.1847 1.0073714e+09 0.086925354 0.026478027 109.09296 19.631717 6638.3918 9.5681638e+08 0.085600438 0.025654573 109.13626 19.510470 6640.5989 9.0794914e+08 0.085589318 0.025197379 109.17957 19.393162 6642.8060 8.6154678e+08 0.085233849 0.025184678 109.22288 19.276226 6645.0131 8.1661552e+08 0.084314401 0.025457800 109.26356 19.156684 6647.2201 7.7472379e+08 0.083328183 0.026553687 109.30254 19.035437 6649.4272 7.3364623e+08 0.082579724 0.027044766 109.34279 18.915469 6651.6343 6.9303894e+08 0.082433824 0.026970283 109.38609 18.798551 6653.8414 6.6064967e+08 0.082032036 0.027955257 109.42939 18.681643 6656.0485 6.3393253e+08 0.080415681 0.028065989 109.46795 18.573732 6658.2556 6.1509783e+08 0.078996439 0.030514377 109.50644 18.465958 6660.4627 5.9181344e+08 0.077645748 0.032046553 109.54512 18.354637 6662.6698 5.6818418e+08 0.076396794 0.032668490 109.58409 18.237719 6664.8769 5.4559791e+08 0.075699791 0.028997691 109.62341 18.120460 6667.0840 5.2423363e+08 0.075359504 0.027134294 109.66671 17.999213 6669.2910 5.0652506e+08 0.074252023 0.028056784 109.71001 17.877966 6671.4981 4.8196247e+08 0.074315000 0.026872447 109.75332 17.760050 6673.7052 4.5980639e+08 0.073682908 0.028513924 109.79662 17.643133 6675.9123 4.4083206e+08 0.071472499 0.031545763 109.84049 17.518531 6678.1194 4.1801391e+08 0.070425533 0.030856755 109.88503 17.384908 6680.3265 4.0121055e+08 0.070722490 0.029511919 109.92903 17.256723 6682.5336 3.8145370e+08 0.071409215 0.030832216 109.97233 17.135477 6684.7407 3.6259686e+08 0.071383525 0.032691678 110.01507 17.014790 6686.9478 3.4505697e+08 0.069806226 0.034312503 110.05405 16.897855 6689.1548 3.2587925e+08 0.067024165 0.033876639 110.09303 16.780919 6691.3619 3.1115171e+08 0.066107910 0.032915870 110.13200 16.663999 6693.5690 2.9983209e+08 0.065223797 0.031408878 110.17097 16.547081 6695.7761 2.8719773e+08 0.065067779 0.029716911 110.20995 16.430164 6697.9832 2.7430638e+08 0.064484420 0.030215691 110.24892 16.313247 6700.1903 2.6293278e+08 0.062970056 0.030808864 110.28877 16.195453 6702.3974 2.5002397e+08 0.061850356 0.033194042 110.33207 16.074206 6704.6045 2.3852035e+08 0.062313537 0.036474381 110.37537 15.952958 6706.8116 2.2824905e+08 0.062180369 0.039858864 110.41481 15.835579 6709.0187 2.1844614e+08 0.061710437 0.041120680 110.45378 15.718662 6711.2257 2.1088186e+08 0.059988995 0.040949063 110.49275 15.601744 6713.4328 2.0127971e+08 0.057980179 0.045252077 110.53172 15.484826 6715.6399 1.9124084e+08 0.056181122 0.048033080 110.57070 15.367908 6717.8470 1.8723570e+08 0.054080178 0.049821877 110.60967 15.250991 6720.0541 1.8260288e+08 0.052867130 0.050413498 110.64864 15.134074 6722.2612 1.7512974e+08 0.052775059 0.050282308 110.69299 15.001034 6724.4683 1.6577570e+08 0.049728589 0.046016244 110.73753 14.867411 6726.6754 1.5463509e+08 0.046927681 0.040957459 110.77681 14.749568 6728.8825 1.4811999e+08 0.046506203 0.040878830 110.81578 14.632651 6731.0895 1.4223278e+08 0.044682946 0.041928238 110.85476 14.515733 6733.2966 1.3672413e+08 0.043439372 0.045534827 110.89373 14.398815 6735.5037 1.3251056e+08 0.044106391 0.049828173 110.93270 14.281892 6737.7108 1.2535511e+08 0.045576332 0.056399882 110.97168 14.164957 6739.9179 1.2061388e+08 0.045559218 0.063949892 111.01076 14.047741 6742.1250 1.1297694e+08 0.043262981 0.068915320 111.05529 13.914118 6744.3321 1.0800155e+08 0.038775098 0.078050270 111.09982 13.780549 6746.5392 1.0294505e+08 0.035751371 0.072718796 111.13883 13.663517 6748.7463 98668635. 0.033972104 0.070943009 111.17780 13.546600 6750.9534 97402628. 0.031116470 0.073632017 111.21677 13.429682 6753.1604 96845274. 0.028265653 0.073496506 111.25574 13.312765 6755.3675 95025126. 0.026199512 0.074444207 111.29495 13.191408 6757.5746 87892405. 0.024442664 0.074996238 111.33454 13.062733 6759.7817 80416378. 0.025229336 0.076008594 111.37391 12.938257 6761.9888 73264624. 0.028765938 0.078049919 111.41289 12.821340 6764.1959 71251723. 0.031844893 0.079492670 111.45186 12.704423 6766.4030 71663424. 0.032966122 0.080625291 111.49083 12.587506 6768.6101 72033846. 0.028916222 0.083051192 111.52980 12.470588 6770.8172 70338765. 0.024564267 0.088861665 111.56924 12.341336 6773.0242 68847492. 0.020455045 0.094214828 111.60883 12.207714 6775.2313 64653596. 0.016217538 0.099567990 111.64797 12.089190 6777.4384 60151178. 0.011834438 0.10492115 111.68695 11.976603 6779.6455 55597806. 0.0071956096 0.11027431 111.72819 11.855425 6781.8526 50593256. 0.0020144978 0.11562748 111.77273 11.721801 6784.0597 51762267. -0.0041778879 0.12098064 111.81536 11.588178 6786.2668 50576382. -0.022394031 0.12633380 111.85495 11.454556 6788.4739 49737727. -0.014313413 0.13168696 111.89431 11.328658 6790.6810 46174573. 0.0083121185 0.13704013 111.93328 11.216071