# # 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 = 50.924947 km # Date (UTC) = 2013-12-15T09:02:22.908 # Date (julian) = 2456641.87665403 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6519.1626 3.2304823e+10 0.13495027 0.038061637 -17.652782 49.021170 6521.4805 3.0205936e+10 0.14639349 0.038760596 -17.757882 48.920112 6523.7984 2.8308653e+10 0.15281368 0.039376995 -17.862983 48.821092 6526.1163 2.6411274e+10 0.15676332 0.039790024 -17.968084 48.724077 6528.4342 2.4631804e+10 0.16096335 0.041786947 -18.073062 48.627061 6530.7521 2.2920090e+10 0.16333654 0.044881654 -18.174134 48.530032 6533.0700 2.1311512e+10 0.16585322 0.047549347 -18.275205 48.433003 6535.3879 1.9846092e+10 0.16588983 0.048056012 -18.376269 48.335981 6537.7058 1.8491184e+10 0.16612055 0.049017999 -18.477327 48.238967 6540.0237 1.7270432e+10 0.16646357 0.050865321 -18.578050 48.141616 6542.3417 1.6099276e+10 0.16489192 0.051131949 -18.675065 48.040558 6544.6596 1.5002797e+10 0.16424720 0.052179397 -18.772081 47.939500 6546.9775 1.3938966e+10 0.16358878 0.053268824 -18.869097 47.840904 6549.2954 1.2979161e+10 0.16262042 0.054267290 -18.966112 47.743887 6551.6133 1.2108265e+10 0.16222093 0.055451022 -19.063130 47.646869 6553.9312 1.1314562e+10 0.16096925 0.054866971 -19.160159 47.549840 6556.2491 1.0603460e+10 0.15955743 0.053976504 -19.257189 47.452810 6558.5670 9.9354142e+09 0.15767872 0.052756150 -19.354209 47.353114 6560.8849 9.3348417e+09 0.15479341 0.051476452 -19.451225 47.252056 6563.2028 8.7492942e+09 0.15232176 0.049693759 -19.549666 47.149478 6565.5207 8.1491594e+09 0.14998682 0.047727113 -19.654263 47.040334 6567.8386 7.5586221e+09 0.14853975 0.045908108 -19.758859 46.931191 6570.1565 7.0172391e+09 0.14748237 0.044852668 -19.851959 46.834042 6572.4744 6.5626270e+09 0.14609351 0.043958457 -19.944933 46.737026 6574.7923 6.1743528e+09 0.14440291 0.042474444 -20.037912 46.637920 6577.1103 5.8183728e+09 0.14249399 0.040047192 -20.130898 46.536848 6579.4282 5.4834210e+09 0.14015540 0.036835120 -20.223883 46.435946 6581.7461 5.1750667e+09 0.13829360 0.035370690 -20.316857 46.338931 6584.0640 4.8889311e+09 0.13638024 0.034480663 -20.409831 46.241916 6586.3819 4.6227088e+09 0.13461629 0.033166360 -20.500509 46.144900 6588.6998 4.3706651e+09 0.13296329 0.033146235 -20.589440 46.047884 6591.0177 4.1295054e+09 0.13043001 0.029181947 -20.678371 45.950487 6593.3356 3.9156587e+09 0.12809929 0.026790217 -20.767302 45.849429 6595.6535 3.7135735e+09 0.12509453 0.025691341 -20.856232 45.748371 6597.9714 3.5188915e+09 0.12261573 0.025416187 -20.952060 45.642297 6600.2893 3.3122913e+09 0.12151884 0.025584658 -21.052110 45.533153 6602.6072 3.1127255e+09 0.12027054 0.026998453 -21.145776 45.427411 6604.9251 2.9323667e+09 0.11874295 0.026620588 -21.230676 45.326340 6607.2430 2.7754871e+09 0.11658571 0.025227089 -21.315575 45.225268 6609.5609 2.6364775e+09 0.11249934 0.023872558 -21.404297 45.128040 6611.8788 2.5019866e+09 0.10903996 0.024398009 -21.493229 45.031024 6614.1968 2.3801871e+09 0.10746039 0.023804935 -21.580244 44.932091 6616.5147 2.2609841e+09 0.10581063 0.023363075 -21.665132 44.831033 6618.8326 2.1483995e+09 0.10527827 0.024399485 -21.750020 44.730001 6621.1505 2.0484308e+09 0.10460458 0.025039571 -21.834909 44.632961 6623.4684 1.9575580e+09 0.10298481 0.024665354 -21.919797 44.535946 6625.7863 1.8666023e+09 0.10173675 0.026335883 -22.007886 44.430143 6628.1042 1.7684868e+09 0.10003335 0.025745399 -22.098854 44.316434 6630.4221 1.6635181e+09 0.098582888 0.025929342 -22.187829 44.208197 6632.7400 1.5674911e+09 0.097068428 0.026121078 -22.272718 44.111181 6635.0579 1.4838065e+09 0.095544100 0.026408473 -22.357607 44.014164 6637.3758 1.4168714e+09 0.093879590 0.025977346 -22.439044 43.913696 6639.6937 1.3566691e+09 0.093139588 0.025380121 -22.519890 43.812638 6642.0116 1.2974223e+09 0.093122304 0.025152172 -22.604579 43.708505 6644.3295 1.2323397e+09 0.091797310 0.025379222 -22.695533 43.599359 6646.6474 1.1619409e+09 0.090450655 0.026255287 -22.784655 43.492413 6648.9654 1.0968850e+09 0.088885996 0.027610495 -22.865501 43.395398 6651.2833 1.0389399e+09 0.088194908 0.026701244 -22.946347 43.298383 6653.6012 9.9571394e+08 0.087175229 0.027832596 -23.024341 43.198499 6655.9191 9.5753365e+08 0.084889760 0.027989979 -23.101155 43.097427 6658.2370 9.1857230e+08 0.082788355 0.030481368 -23.180214 42.994467 6660.5549 8.7611204e+08 0.080744283 0.032130363 -23.266620 42.885322 6662.8728 8.2844520e+08 0.079021138 0.032554583 -23.352831 42.776460 6665.1907 7.8625360e+08 0.078131701 0.028234663 -23.433678 42.675401 6667.5086 7.4742458e+08 0.077538020 0.027290277 -23.514524 42.574343 6669.8265 7.1608535e+08 0.076828980 0.027506817 -23.590833 42.475554 6672.1444 6.9062566e+08 0.076649842 0.026963307 -23.663595 42.378539 6674.4623 6.6465837e+08 0.075577374 0.029344793 -23.737549 42.280067 6676.7802 6.3468942e+08 0.073283189 0.032216579 -23.823956 42.166375 6679.0981 6.0028058e+08 0.072675033 0.030186674 -23.910362 42.052683 6681.4160 5.7194223e+08 0.073816700 0.029976542 -23.988246 41.953795 6683.7340 5.4523019e+08 0.074241446 0.032264195 -24.065061 41.856766 6686.0519 5.2233959e+08 0.073668136 0.033791256 -24.143969 41.752822 6688.3698 4.9547059e+08 0.070923278 0.033870545 -24.225828 41.639129 6690.6877 4.6959828e+08 0.069347883 0.033037056 -24.305721 41.529039 6693.0056 4.5221937e+08 0.068404354 0.031602175 -24.378482 41.432024 6695.3235 4.3610820e+08 0.067749757 0.029800054 -24.451243 41.335010 6697.6414 4.1909767e+08 0.067006137 0.030172434 -24.530756 41.225617 6699.9593 3.9743950e+08 0.065444182 0.030705276 -24.612615 41.111924 6702.2772 3.7461167e+08 0.063938559 0.033098078 -24.689531 41.007292 6704.5951 3.5864871e+08 0.064278409 0.036469784 -24.762293 40.910276 6706.9130 3.4472495e+08 0.063973393 0.040035438 -24.835687 40.812101 6709.2309 3.3202876e+08 0.063254764 0.040985665 -24.917546 40.698408 6711.5488 3.1853786e+08 0.061241530 0.041316650 -24.999405 40.584715 6713.8667 3.0076603e+08 0.059014845 0.046821421 -25.077314 40.474969 6716.1846 2.8437638e+08 0.057267469 0.048673321 -25.154637 40.365809 6718.5025 2.7011529e+08 0.055073072 0.050595096 -25.226178 40.262094 6720.8205 2.5704711e+08 0.055151702 0.050324702 -25.294897 40.161036 6723.1384 2.4764043e+08 0.054362243 0.049446111 -25.365319 40.058375 6725.4563 2.3812846e+08 0.050311829 0.041291011 -25.442630 39.949230 6727.7742 2.2671801e+08 0.049481416 0.039928963 -25.519941 39.840085 6730.0921 2.1701331e+08 0.048441482 0.040505157 -25.597251 39.730939 6732.4100 2.0548132e+08 0.047104785 0.043815687 -25.674562 39.621794 6734.7279 1.9581189e+08 0.047029811 0.049309804 -25.751873 39.509010 6737.0458 1.8852665e+08 0.048979399 0.054281465 -25.829184 39.395317 6739.3637 1.8232723e+08 0.049605644 0.063271660 -25.901328 39.291654 6741.6816 1.7676509e+08 0.047807622 0.067702694 -25.970048 39.194639 6743.9995 1.7021931e+08 0.042866187 0.077790177 -26.039284 39.095495 6746.3174 1.6371255e+08 0.040539862 0.075296835 -26.112058 38.981786 6748.6353 1.5450510e+08 0.037788857 0.070359411 -26.184832 38.868077 6750.9532 1.4705270e+08 0.034837539 0.073631826 -26.261820 38.758607 6753.2711 1.3889893e+08 0.031793135 0.073854769 -26.339131 38.649462 6755.5891 1.3275151e+08 0.029280726 0.074347083 -26.413122 38.540318 6757.9070 1.2716289e+08 0.027768022 0.073987676 -26.485885 38.431173 6760.2249 1.2095321e+08 0.028085348 0.076490080 -26.558648 38.319614 6762.5428 1.1835885e+08 0.032072542 0.077175309 -26.631411 38.205922 6764.8607 1.1256441e+08 0.034470570 0.079524518 -26.704174 38.093740 6767.1786 1.0810764e+08 0.033622661 0.081775796 -26.776937 37.984595 6769.4965 1.0047206e+08 0.027970611 0.085658472 -26.849094 37.874843 6771.8144 98494405. 0.023219735 0.091280414 -26.917309 37.761151 6774.1323 98211563. 0.018514564 0.096902357 -26.985524 37.647459 6776.4502 95582034. 0.013762078 0.10252430 -27.057988 37.538017 6778.7681 92789802. 0.0089935887 0.10814624 -27.130751 37.428874 6781.0860 83490740. 0.0038820590 0.11376818 -27.200170 37.319729 6783.4039 75790887. -0.0013250607 0.11939013 -27.268385 37.210583 6785.7218 69808071. -0.0065810375 0.12501207 -27.339041 37.098998 6788.0397 67156892. -0.011624745 0.13063401 -27.411804 36.985305 6790.3577 67303387. -0.016382833 0.13625595 -27.486322 36.867883 6792.6756 65814263. -0.021447634 0.14187790 -27.564285 36.743143 6794.9935 64011562. -0.026805328 0.14749984 -27.638220 36.624847 6797.3114 61879468. -0.032732720 0.15312178 -27.706445 36.515688 6799.6293 61107118. -0.039415691 0.15874372 -27.774668 36.405553 6801.9472 60691489. -0.049074172 0.16436566 -27.842884 36.291861 6804.2651 58136200. -0.089336351 0.16998761 -27.911025 36.178242 6806.5830 54731965. -0.063518944 0.17560955 -27.974693 36.069096 6808.9009 49019349. 0.0049078373 0.18123149 -28.038361 35.959950