# # 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 = 45.381174 km # Date (UTC) = 2010-11-26T10:38:18.231 # Date (julian) = 2455526.94326657 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.9185 8.7556149e+10 0.085718776 0.034671019 91.250790 36.653194 6510.2838 7.4126608e+10 0.096566175 0.035384256 91.327058 36.515149 6512.6490 6.3531774e+10 0.10766899 0.036097493 91.411914 36.366646 6515.0143 5.5116312e+10 0.11910016 0.036810729 91.488366 36.228377 6517.3795 4.8314262e+10 0.13089229 0.037523966 91.557976 36.098441 6519.7448 4.2887957e+10 0.14308069 0.038237203 91.631528 35.961147 6522.1101 3.7933120e+10 0.15518195 0.038946072 91.711083 35.812646 6524.4753 3.3555652e+10 0.16143412 0.039595820 91.783187 35.673627 6526.8406 3.0031245e+10 0.16683585 0.040549333 91.848155 35.543689 6529.2058 2.7134630e+10 0.17064703 0.042563660 91.918315 35.407144 6531.5711 2.4619966e+10 0.17444121 0.046059909 91.997870 35.258643 6533.9363 2.2369722e+10 0.17664094 0.047917507 92.072747 35.118875 6536.3016 2.0468294e+10 0.17704939 0.048060355 92.142357 34.988939 6538.6669 1.8816560e+10 0.17804754 0.049481407 92.213430 34.853145 6541.0321 1.7103232e+10 0.17738514 0.051316112 92.287681 34.704641 6543.3974 1.5429911e+10 0.17594850 0.051486186 92.357944 34.564114 6545.7626 1.3922210e+10 0.17345765 0.052462399 92.422922 34.434158 6548.1279 1.2658259e+10 0.17067414 0.053705838 92.490454 34.299095 6550.4931 1.1568374e+10 0.16712233 0.055108839 92.564705 34.150593 6552.8584 1.0568502e+10 0.16374087 0.055370707 92.635335 34.011141 6555.2237 9.7187226e+09 0.16045168 0.054665437 92.700304 33.885845 6557.5889 8.9778931e+09 0.15748794 0.053496972 92.767454 33.755093 6559.9542 8.2578138e+09 0.15445904 0.052279482 92.841704 33.606590 6562.3194 7.5796583e+09 0.15103049 0.050575953 92.912710 33.464577 6564.6847 6.9765321e+09 0.14794450 0.048461297 92.977678 33.334641 6567.0499 6.4994268e+09 0.14535086 0.046574958 93.041743 33.204705 6569.4152 6.1077812e+09 0.14284243 0.044879448 93.102073 33.074769 6571.7805 5.7151961e+09 0.14076230 0.044290117 93.162957 32.944094 6574.1457 5.3067899e+09 0.13790414 0.042785019 93.237207 32.795591 6576.5110 4.8998109e+09 0.13530924 0.040783254 93.309310 32.650668 6578.8762 4.5316019e+09 0.13201735 0.037265947 93.369636 32.525374 6581.2415 4.2343095e+09 0.12904939 0.035523484 93.429963 32.400057 6583.6067 3.9989092e+09 0.12620319 0.034714560 93.490289 32.270144 6585.9720 3.7703961e+09 0.12308167 0.033193682 93.550616 32.140207 6588.3373 3.5171021e+09 0.12062483 0.033267303 93.618225 31.994592 6590.7025 3.2662145e+09 0.11725359 0.029755282 93.687175 31.846090 6593.0678 3.0324762e+09 0.11400396 0.027039215 93.747855 31.719843 6595.4330 2.8365888e+09 0.11018886 0.025668477 93.808181 31.594547 6597.7983 2.6493896e+09 0.10674494 0.025470819 93.875438 31.450591 6600.1635 2.4590576e+09 0.10479134 0.025326085 93.944385 31.302089 6602.5288 2.2790987e+09 0.10306342 0.027065378 94.005416 31.170641 6604.8941 2.1201564e+09 0.10145510 0.026602136 94.065746 31.040705 6607.2593 1.9961026e+09 0.099771719 0.025194952 94.126073 30.914312 6609.6246 1.8813985e+09 0.096703062 0.023891458 94.186400 30.789015 6611.9898 1.7670409e+09 0.094356763 0.024327240 94.248746 30.649591 6614.3551 1.6479771e+09 0.093644890 0.023695854 94.312392 30.501089 6616.7203 1.5349171e+09 0.092480952 0.023395356 94.373636 30.366016 6619.0856 1.4356735e+09 0.092026466 0.024546567 94.433963 30.236080 6621.4509 1.3544593e+09 0.091293910 0.024940009 94.491657 30.108771 6623.8161 1.2837811e+09 0.089518771 0.024794182 94.547354 29.983455 6626.1814 1.2064109e+09 0.088339315 0.026359826 94.606339 29.848545 6628.5466 1.1270063e+09 0.086819472 0.025925030 94.669980 29.700042 6630.9119 1.0469865e+09 0.085252068 0.025930549 94.729419 29.563801 6633.2771 9.7596582e+08 0.083952665 0.026200638 94.785107 29.438506 6635.6424 9.1916791e+08 0.082363587 0.026496124 94.842528 29.311478 6638.0077 8.7211761e+08 0.081152723 0.025671309 94.902854 29.181541 6640.3729 8.2962928e+08 0.081046429 0.025225026 94.962746 29.048706 6642.7382 7.8207369e+08 0.080846088 0.025181903 95.021087 28.905506 6645.1034 7.3417919e+08 0.079766585 0.025500134 95.078545 28.768270 6647.4687 6.9093511e+08 0.078471236 0.026684542 95.134233 28.642975 6649.8339 6.4892805e+08 0.077513288 0.026484148 95.191339 28.513545 6652.1992 6.1267233e+08 0.076858726 0.027305327 95.254984 28.365043 6654.5644 5.7601853e+08 0.075888650 0.027795765 95.316299 28.223332 6656.9297 5.4108468e+08 0.073976612 0.028839415 95.371984 28.098036 6659.2950 5.1284279e+08 0.072590336 0.031773069 95.427030 27.972101 6661.6602 4.8926727e+08 0.071444579 0.032871214 95.478077 27.842163 6664.0255 4.6784311e+08 0.070288427 0.032112868 95.529124 27.712226 6666.3907 4.4386680e+08 0.070671360 0.026984735 95.592553 27.569255 6668.7560 4.2019929e+08 0.069817223 0.028139773 95.654972 27.427801 6671.1212 3.9768205e+08 0.070050642 0.026867076 95.706018 27.302505 6673.4865 3.7739901e+08 0.069705194 0.028186821 95.757065 27.177209 6675.8518 3.5676567e+08 0.067693080 0.031429794 95.819982 27.030042 6678.2170 3.3275873e+08 0.066746129 0.030791462 95.882905 26.882862 6680.5823 3.1288858e+08 0.067417003 0.029567154 95.933952 26.757566 6682.9475 2.9887119e+08 0.068228047 0.031148494 95.984999 26.632271 6685.3128 2.8362716e+08 0.068031800 0.033035220 96.042625 26.490825 6687.6780 2.6844734e+08 0.065878172 0.033964747 96.100845 26.347923 6690.0433 2.5210367e+08 0.063706110 0.033110901 96.151892 26.222627 6692.4086 2.3800505e+08 0.062610142 0.032290892 96.202938 26.097331 6694.7738 2.2516090e+08 0.061844912 0.030176481 96.260270 25.956608 6697.1391 2.1101287e+08 0.061257381 0.030108865 96.318610 25.813410 6699.5043 2.0004442e+08 0.059657920 0.031125079 96.369831 25.687688 6701.8696 1.9072195e+08 0.057614152 0.032685378 96.420877 25.562393 6704.2348 1.8061070e+08 0.057752873 0.036292874 96.477914 25.418038 6706.6001 1.7034438e+08 0.057422156 0.039490834 96.536255 25.269536 6708.9654 1.5864899e+08 0.056661563 0.041094820 96.587770 25.142749 6711.3306 1.4948356e+08 0.054599545 0.041068382 96.638817 25.017452 6713.6959 1.4448779e+08 0.052183570 0.046203444 96.695559 24.878176 6716.0611 1.3703173e+08 0.050115185 0.048491397 96.753900 24.734978 6718.4264 1.3407490e+08 0.047598024 0.050476478 96.801560 24.607793 6720.7916 1.2798281e+08 0.047163999 0.050328041 96.847972 24.482479 6723.1569 1.1996740e+08 0.045922290 0.049456450 96.903220 24.343916 6725.5222 1.1476520e+08 0.041428287 0.041249854 96.961561 24.200717 6727.8874 1.0614260e+08 0.040121946 0.039778097 97.009693 24.072831 6730.2527 1.0361523e+08 0.038591418 0.040725344 97.056098 23.947535 6732.6179 98237962. 0.036839625 0.043853967 97.110863 23.809699 6734.9832 93425261. 0.036582735 0.049294444 97.169204 23.666500 6737.3484 89702099. 0.038187014 0.055245533 97.223221 23.523302 6739.7137 84820841. 0.038201948 0.063699982 97.276257 23.380104 6742.0790 83102554. 0.035828351 0.068803139 97.323130 23.253545 6744.4442 80837294. 0.031023143 0.078136998 97.369535 23.128249 6746.8095 80010228. 0.026823953 0.069576300 97.425184 22.993195 6749.1747 76170843. 0.025443136 0.072230093 97.483525 22.855300 6751.5400 71958611. 0.021313932 0.073939979 97.537149 22.712690 6753.9052 65398174. 0.018448236 0.075906809 97.590184 22.569492 6756.2705 63160806. 0.015172787 0.074862936 97.643224 22.426293 6758.6358 61310765. 0.014426770 0.075049707 97.695481 22.285208 6761.0010 58760554. 0.013616515 0.077968308 97.741886 22.159912 6763.3663 58256846. 0.017786608 0.077553238 97.788291 22.034616 6765.7315 53310447. 0.016104835 0.079664735 97.841083 21.892077 6768.0968 51878205. 0.0062198704 0.081204265 97.894118 21.749291 6770.4620 50334792. -0.040514557 0.088000345 97.947154 21.611396 6772.8273 47730579. -0.012016405 0.093737133 98.000190 21.472482 6775.1926 46301181. 0.063286540 0.099473921 98.053225 21.329284