# # 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 = 46.663650 km # Date (UTC) = 2015-12-26T10:09:50.040 # Date (julian) = 2457382.92349584 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.5553 3.7041583e+11 0.018212912 0.029435193 -31.999669 49.919183 6492.8537 2.1641073e+11 0.027707303 0.030128249 -32.107903 49.822975 6495.1520 1.5323654e+11 0.036225453 0.030821305 -32.216124 49.726778 6497.4503 1.1753328e+11 0.043924025 0.031514361 -32.324346 49.630581 6499.7487 9.4310193e+10 0.050927859 0.032207417 -32.432567 49.534384 6502.0470 7.8232425e+10 0.057436667 0.032900473 -32.540788 49.438187 6504.3453 6.6498376e+10 0.063777388 0.033593529 -32.648676 49.341990 6506.6437 5.7906053e+10 0.070338992 0.034286585 -32.752889 49.245794 6508.9420 5.0935950e+10 0.077410302 0.034979641 -32.857103 49.149598 6511.2403 4.5386625e+10 0.085387233 0.035672697 -32.961324 49.051036 6513.5386 4.0834016e+10 0.094564297 0.036365753 -33.065550 48.950818 6515.8370 3.6891614e+10 0.10508277 0.037058809 -33.169399 48.850977 6518.1353 3.3415047e+10 0.11704937 0.037751865 -33.269604 48.754780 6520.4336 3.0261134e+10 0.13044550 0.038444921 -33.369809 48.658583 6522.7320 2.7522098e+10 0.14327472 0.039108928 -33.472414 48.562386 6525.0303 2.5219013e+10 0.15361719 0.039778756 -33.576626 48.466191 6527.3286 2.3034381e+10 0.16227738 0.040955069 -33.680004 48.369995 6529.6270 2.0913561e+10 0.17017696 0.043234501 -33.776201 48.273798 6531.9253 1.9009471e+10 0.17656984 0.046575475 -33.872399 48.177601 6534.2236 1.7283741e+10 0.17905365 0.048007118 -33.971045 48.078954 6536.5220 1.5782392e+10 0.17877516 0.048257523 -34.071263 47.978736 6538.8203 1.4392122e+10 0.17769493 0.049556126 -34.171020 47.878979 6541.1186 1.3079394e+10 0.17568447 0.051288055 -34.267218 47.782783 6543.4170 1.1935989e+10 0.17343064 0.051491329 -34.363415 47.686588 6545.7153 1.0880120e+10 0.17106263 0.052461975 -34.462095 47.590391 6548.0136 9.9073558e+09 0.16944867 0.053671717 -34.562300 47.494194 6550.3120 9.0372407e+09 0.16775941 0.055063473 -34.661504 47.397497 6552.6103 8.3041050e+09 0.16596828 0.055433155 -34.753693 47.297292 6554.9086 7.6837482e+09 0.16395317 0.054851447 -34.845881 47.197087 6557.2070 7.1280926e+09 0.16152420 0.053736382 -34.940601 47.099399 6559.5053 6.6010393e+09 0.15874190 0.052330148 -35.036810 47.003189 6561.8036 6.0938689e+09 0.15588041 0.050976671 -35.132474 46.906981 6564.1020 5.6352036e+09 0.15266240 0.048725389 -35.224662 46.810785 6566.4003 5.2266942e+09 0.15019110 0.046956440 -35.316851 46.714589 6568.6986 4.8576875e+09 0.14781101 0.045129460 -35.409040 46.615826 6570.9970 4.5264286e+09 0.14551996 0.044504536 -35.501229 46.515622 6573.2953 4.2199840e+09 0.14285404 0.043420519 -35.593419 46.416000 6575.5936 3.9305997e+09 0.13963238 0.041779118 -35.685607 46.319803 6577.8920 3.6638273e+09 0.13608647 0.038819328 -35.777795 46.223606 6580.1903 3.4207427e+09 0.13218422 0.036344901 -35.867382 46.127401 6582.4886 3.2026926e+09 0.12852185 0.035160828 -35.955573 46.031193 6584.7870 3.0072404e+09 0.12533209 0.034086829 -36.043762 45.934361 6587.0853 2.8221735e+09 0.12269607 0.033177265 -36.131943 45.834156 6589.3836 2.6450413e+09 0.12054311 0.032284918 -36.220124 45.733951 6591.6819 2.4824644e+09 0.11806606 0.028432411 -36.308304 45.636396 6593.9803 2.3365592e+09 0.11562155 0.026190857 -36.396485 45.540199 6596.2786 2.1949325e+09 0.11283450 0.025726007 -36.484665 45.443335 6598.5769 2.0666395e+09 0.11080585 0.025131711 -36.572844 45.343131 6600.8753 1.9424744e+09 0.11043861 0.026789284 -36.661024 45.242926 6603.1736 1.8310575e+09 0.10923549 0.026560497 -36.746521 45.145404 6605.4719 1.7250942e+09 0.10834411 0.027060965 -36.830705 45.049196 6607.7703 1.6185009e+09 0.10625909 0.024185992 -36.914887 44.952281 6610.0686 1.5221459e+09 0.10294214 0.024068531 -36.999058 44.852076 6612.3669 1.4333360e+09 0.10045883 0.024046588 -37.083230 44.751871 6614.6653 1.3572316e+09 0.098994590 0.023482146 -37.167402 44.654399 6616.9636 1.2770004e+09 0.097217525 0.023433537 -37.251573 44.558202 6619.2619 1.1981534e+09 0.096197225 0.024589115 -37.335745 44.461255 6621.5603 1.1327843e+09 0.094769156 0.024903743 -37.419916 44.361051 6623.8586 1.0733337e+09 0.092371517 0.024809924 -37.504088 44.260846 6626.1569 1.0223987e+09 0.090519890 0.026390956 -37.595554 44.155081 6628.4553 9.6071875e+08 0.088343984 0.025887937 -37.690265 44.046843 6630.7536 8.9820558e+08 0.086148355 0.025930159 -37.778067 43.944322 6633.0519 8.4492652e+08 0.084275510 0.026161320 -37.858229 43.848125 6635.3503 7.9367478e+08 0.082484155 0.026452315 -37.938392 43.751928 6637.6486 7.5202662e+08 0.081168792 0.025843750 -38.018556 43.651803 6639.9469 7.1125472e+08 0.081137386 0.025289621 -38.098721 43.551598 6642.2453 6.7006714e+08 0.081451726 0.025161733 -38.178885 43.453337 6644.5436 6.3487688e+08 0.080607483 0.025402357 -38.259049 43.357140 6646.8419 6.0252593e+08 0.079600577 0.026355955 -38.339213 43.260943 6649.1403 5.7712881e+08 0.078456289 0.027440350 -38.415417 43.160765 6651.4386 5.5626300e+08 0.078091071 0.026820281 -38.491582 43.060547 6653.7369 5.2583909e+08 0.077555238 0.027901907 -38.569729 42.962323 6656.0353 4.9574479e+08 0.075782672 0.028054360 -38.649893 42.866127 6658.3336 4.6773910e+08 0.074220109 0.030652701 -38.730085 42.769846 6660.6319 4.4237507e+08 0.072680209 0.032200381 -38.815737 42.657188 6662.9303 4.2040054e+08 0.071293047 0.032522346 -38.901412 42.544456 6665.2286 3.9314322e+08 0.070603555 0.028172588 -38.979634 42.444671 6667.5269 3.6779919e+08 0.069963193 0.027297003 -39.055791 42.348474 6669.8252 3.5374264e+08 0.068988798 0.027508115 -39.131947 42.251121 6672.1236 3.3590734e+08 0.068578587 0.026951229 -39.208102 42.150917 6674.4219 3.1933627e+08 0.067291048 0.029310702 -39.284257 42.050712 6676.7202 3.0138612e+08 0.064721565 0.032177918 -39.364398 41.944135 6679.0186 2.8085860e+08 0.063676994 0.030252420 -39.445577 41.835897 6681.3169 2.6907445e+08 0.064510479 0.029900487 -39.523863 41.732286 6683.6152 2.5171541e+08 0.064681998 0.032090225 -39.600018 41.632081 6685.9136 2.3685017e+08 0.063993343 0.033669798 -39.675848 41.532202 6688.2119 2.2529859e+08 0.061245954 0.033834106 -39.747995 41.436004 6690.5102 2.1455164e+08 0.059439904 0.033057390 -39.820143 41.339806 6692.8086 2.0929773e+08 0.058502313 0.031826383 -39.897578 41.233916 6695.1069 1.9299454e+08 0.057790687 0.029839837 -39.978745 41.121184 6697.4052 1.8017751e+08 0.057034032 0.030142549 -40.056588 41.014547 6699.7036 1.6857642e+08 0.055393822 0.030941240 -40.128736 40.918351 6702.0019 1.5303423e+08 0.053322702 0.032878248 -40.200883 40.822156 6704.3002 1.4835205e+08 0.053663313 0.036324984 -40.273039 40.722446 6706.5986 1.4140317e+08 0.053367937 0.039488161 -40.345196 40.622228 6708.8969 1.3650232e+08 0.052701901 0.041020269 -40.419060 40.518975 6711.1952 1.2892671e+08 0.050698743 0.040914351 -40.495719 40.410751 6713.4936 1.1404455e+08 0.047970664 0.045471734 -40.571650 40.304469 6715.7919 1.0393221e+08 0.045593943 0.048188516 -40.643797 40.208273 6718.0902 99175608. 0.043205344 0.049952936 -40.715944 40.112078 6720.3886 97869619. 0.042391275 0.050374745 -40.791098 40.004860 6722.6869 94760129. 0.041794463 0.049756027 -40.867755 39.892128 6724.9852 90732958. 0.037374297 0.041699406 -40.944412 39.781420 6727.2836 86298197. 0.035606520 0.040582608 -41.021071 39.673196 6729.5819 84541197. 0.034846793 0.040657584 -41.095759 39.566827 6731.8802 82728717. 0.032997319 0.043501828 -41.163898 39.466622 6734.1786 77258900. 0.031723658 0.049342856 -41.232037 39.366417 6736.4769 77146914. 0.033769028 0.052157902 -41.303136 39.260295 6738.7752 73551088. 0.034601197 0.061589025 -41.375295 39.152056 6741.0736 71882822. 0.033534260 0.065968462 -41.445368 39.050067 6743.3719 72148295. 0.029655166 0.073556153 -41.513508 38.953872 6745.6702 69172036. 0.027067033 0.078848639 -41.581745 38.857277 6747.9685 67737955. 0.022839529 0.067027727 -41.653893 38.744545 6750.2669 64272279. 0.019682001 0.072459840 -41.726042 38.631813 6752.5652 62946913. 0.016642013 0.073480420 -41.801826 38.522717 6754.8635 62783897. 0.014806537 0.074824783 -41.878483 38.414493 6757.1619 63199071. 0.011943837 0.076248802 -41.952486 38.303615 6759.4602 59837170. 0.011785190 0.075931011 -42.024635 38.190882 6761.7585 54392260. 0.012424921 0.078030895 -42.093807 38.084288 6764.0569 53026146. 0.014388369 0.079486010 -42.157938 37.988093 6766.3552 52536191. 0.013284917 0.080517231 -42.222069 37.891897 6768.6535 50812234. 0.0047246058 0.083207612 -42.289283 37.785147 6770.9519 45868677. -0.010747545 0.089188407 -42.356934 37.676907 6773.2502 41512602. -0.064461151 0.094762873 -42.427548 37.565707 6775.5485 41036086. -0.036073997 0.10033734 -42.499696 37.452975 6780.1452 44344761. 0.041584506 0.11148627 -42.637493 37.234011