# # 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 = 32.093149 km # Date (UTC) = 2017-01-24T10:32:50.830 # Date (julian) = 2457777.93947720 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.9773 7.1145426e+10 0.083536998 0.034387186 -33.334447 57.087023 6508.7427 6.4411549e+10 0.092274565 0.034919542 -33.490802 56.971560 6510.5081 5.7117121e+10 0.10098416 0.035451899 -33.638594 56.856098 6512.2735 5.0897303e+10 0.10988863 0.035984255 -33.786386 56.740635 6514.0389 4.5401811e+10 0.11893854 0.036516612 -33.938372 56.620980 6515.8043 4.0696022e+10 0.12817648 0.037048968 -34.090784 56.500899 6517.5698 3.6587112e+10 0.13758421 0.037581324 -34.236334 56.380817 6519.3352 3.3061788e+10 0.14717129 0.038113681 -34.379508 56.260734 6521.1006 2.9999064e+10 0.15691409 0.038646037 -34.513153 56.152847 6522.8660 2.7454715e+10 0.16445080 0.039144026 -34.639829 56.053882 6524.6314 2.5266895e+10 0.16985488 0.039651277 -34.767113 55.953833 6526.3968 2.3306746e+10 0.17335597 0.040084129 -34.905643 55.833776 6528.1623 2.1439211e+10 0.17731005 0.041571203 -35.044172 55.713719 6529.9277 1.9594983e+10 0.18079856 0.043713486 -35.186814 55.593640 6531.6931 1.7928731e+10 0.18247459 0.046237478 -35.329987 55.473557 6533.4585 1.6425168e+10 0.18351691 0.047714438 -35.466505 55.353477 6535.2239 1.5090481e+10 0.18350833 0.048127161 -35.600443 55.233396 6536.9893 1.3945100e+10 0.18256916 0.048675686 -35.736944 55.113315 6538.7548 1.2878739e+10 0.18068144 0.049524206 -35.875499 54.993232 6540.5202 1.1868161e+10 0.17915864 0.051099843 -36.012253 54.873151 6542.2856 1.0893904e+10 0.17673573 0.051110662 -36.146190 54.753070 6544.0510 1.0014640e+10 0.17430818 0.051685720 -36.274933 54.636848 6545.8164 9.3365561e+09 0.17210784 0.052462881 -36.385773 54.533925 6547.5818 8.7940724e+09 0.17064296 0.053508624 -36.496614 54.431002 6549.3472 8.3283640e+09 0.16831349 0.054320153 -36.620368 54.316088 6551.1127 7.8522573e+09 0.16608683 0.055275298 -36.749687 54.196006 6552.8781 7.3469751e+09 0.16448705 0.055365754 -36.878992 54.075937 6554.6435 6.8511571e+09 0.16217358 0.054845884 -37.008284 53.955880 6556.4089 6.3571268e+09 0.15952379 0.053953008 -37.135887 53.835813 6558.1743 5.8696597e+09 0.15725086 0.053090756 -37.260587 53.715731 6559.9397 5.4166789e+09 0.15472892 0.052281110 -37.381674 53.599128 6561.7052 5.0420078e+09 0.15147841 0.051025194 -37.488557 53.496205 6563.4706 4.7354766e+09 0.14826437 0.049384020 -37.595440 53.393281 6565.2360 4.4633776e+09 0.14548864 0.048050427 -37.714379 53.278747 6567.0014 4.1850683e+09 0.14269518 0.046615998 -37.839079 53.158665 6568.7668 3.8742864e+09 0.13990698 0.045066770 -37.961416 53.038584 6570.5322 3.5722536e+09 0.13780955 0.044697038 -38.081497 52.918503 6572.2977 3.3061581e+09 0.13532503 0.044059697 -38.195637 52.802992 6574.0631 3.0945008e+09 0.13193002 0.042824713 -38.298560 52.696110 6575.8285 2.9214087e+09 0.12873451 0.041543476 -38.401483 52.589227 6577.5939 2.7451029e+09 0.12555686 0.039287497 -38.514690 52.471520 6579.3593 2.5693033e+09 0.12221474 0.036872965 -38.630154 52.351440 6581.1247 2.3923852e+09 0.11960744 0.035558838 -38.734812 52.242594 6582.8901 2.2499749e+09 0.11787214 0.035051560 -38.833777 52.139670 6584.6556 2.1259355e+09 0.11591827 0.034158400 -38.934864 52.033944 6586.4210 1.9959579e+09 0.11397582 0.033165854 -39.050304 51.909268 6588.1864 1.8736998e+09 0.11252088 0.033317683 -39.165744 51.784593 6589.9518 1.7668629e+09 0.11058692 0.031157667 -39.261505 51.680868 6591.7172 1.6783583e+09 0.10808197 0.028392601 -39.356512 51.577945 6593.4826 1.6045224e+09 0.10580736 0.026653508 -39.458441 51.465505 6595.2481 1.5201124e+09 0.10342931 0.025649296 -39.569286 51.340805 6597.0135 1.4237835e+09 0.10108563 0.025718475 -39.680130 51.217361 6598.7789 1.3312232e+09 0.099224054 0.025035295 -39.790974 51.097280 6600.5443 1.2442463e+09 0.098899959 0.026108872 -39.899707 50.979028 6602.3097 1.1762023e+09 0.097926137 0.027252327 -39.990755 50.876103 6604.0751 1.1200719e+09 0.096196300 0.026115892 -40.081803 50.773178 6605.8406 1.0591055e+09 0.095623061 0.027370203 -40.181661 50.657614 6607.6060 9.9711159e+08 0.093687401 0.024510429 -40.287886 50.532914 6609.3714 9.2655208e+08 0.090954121 0.023816251 -40.387810 50.417257 6611.1368 8.7239801e+08 0.088246311 0.024871216 -40.478859 50.314333 6612.9022 8.2676288e+08 0.087167770 0.023646648 -40.569909 50.211410 6614.6676 7.8899708e+08 0.085828753 0.023480518 -40.657436 50.104966 6616.4331 7.6325199e+08 0.084148381 0.023350266 -40.744525 49.998083 6618.1985 7.3807408e+08 0.083456004 0.023920662 -40.836884 49.884733 6619.9639 7.1321987e+08 0.082920838 0.024758483 -40.938492 49.760033 6621.7293 6.8684838e+08 0.082085550 0.024847718 -41.037228 49.639641 6623.4947 6.5692881e+08 0.080947164 0.024675110 -41.124318 49.536717 6625.2601 6.2268649e+08 0.080313730 0.025708018 -41.211408 49.433793 6627.0255 5.8889456e+08 0.078795929 0.025326678 -41.308248 49.316243 6628.7910 5.3916929e+08 0.078476489 0.026024233 -41.409854 49.191543 6630.5564 5.0001117e+08 0.077622615 0.025929673 -41.502096 49.077881 6632.3218 4.6919410e+08 0.076702141 0.026070931 -41.585212 48.974974 6634.0872 4.4519475e+08 0.075701184 0.026333204 -41.668328 48.872067 6635.8526 4.2441746e+08 0.074723227 0.026527652 -41.765039 48.747804 6637.6180 3.9752593e+08 0.074114363 0.025858714 -41.862030 48.623104 6639.3835 3.7638135e+08 0.073703819 0.025491019 -41.947729 48.512921 6641.1489 3.5969951e+08 0.074277324 0.025148806 -42.030860 48.406039 6642.9143 3.4530858e+08 0.073982712 0.025189111 -42.116657 48.295348 6644.6797 3.2425712e+08 0.073213695 0.025417067 -42.209028 48.175266 6646.4451 3.0225414e+08 0.072365270 0.026150556 -42.299770 48.056812 6648.2105 2.8637634e+08 0.071524534 0.027105218 -42.378942 47.949929 6649.9760 2.6949343e+08 0.070948048 0.026288385 -42.458115 47.843047 6651.7414 2.6261125e+08 0.070227247 0.027052317 -42.537286 47.736164 6653.5068 2.5144447e+08 0.069601904 0.027784407 -42.616457 47.629281 6655.2722 2.3715494e+08 0.068257942 0.027722690 -42.696567 47.521460 6657.0376 2.2526481e+08 0.066500249 0.028944745 -42.788937 47.401380 6658.8030 2.0801049e+08 0.065111533 0.031485272 -42.881308 47.281299 6660.5684 1.9801834e+08 0.063928179 0.032142689 -42.958137 47.173175 6662.3339 1.9296321e+08 0.062633736 0.032856954 -43.033351 47.066292 6664.0993 1.8386423e+08 0.061310789 0.031842829 -43.115081 46.952643 6665.8647 1.7125023e+08 0.061196838 0.027130296 -43.207450 46.827942 6667.6301 1.5965348e+08 0.060353713 0.027334908 -43.296139 46.707914 6669.3955 1.4808027e+08 0.059125323 0.027949469 -43.371353 46.604991 6671.1609 1.4440886e+08 0.058868730 0.026867642 -43.446568 46.502068 6672.9264 1.3893378e+08 0.058261901 0.027416534 -43.519056 46.396418 6674.6918 1.3382091e+08 0.056764122 0.029538349 -43.590312 46.289536 6676.4572 1.2669580e+08 0.054475447 0.032008381 -43.664244 46.179761 6678.2226 1.1685455e+08 0.053314251 0.030787725 -43.751995 46.055061 6679.9880 1.0739926e+08 0.053005307 0.029451314 -43.839746 45.930361 6681.7534 1.0023505e+08 0.053073881 0.030235384 -43.911037 45.827391 6683.5189 96191623. 0.053011130 0.031948967 -43.982280 45.724484 6685.2843 93148882. 0.052421587 0.033005097 -44.059118 45.611323 6687.0497 91208215. 0.050513443 0.034315190 -44.142252 45.486624 6688.8151 86157769. 0.047242709 0.033973344 -44.221759 45.367365 6690.5805 78858747. 0.044559054 0.033049336 -44.293014 45.260482 6692.3459 71275290. 0.040461193 0.032363617 -44.364269 45.153600 6694.1113 66645266. 0.032866993 0.031104965 -44.435524 45.046717 6695.8768 65150854. -0.0052558540 0.029698422 -44.506779 44.939834 6697.6422 64240843. 0.027300058 0.030172534 -44.579871 44.829611 6699.4076 59500578. 0.097233259 0.031214337 -44.658385 44.709529