# # 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 = 59.312426 km # Date (UTC) = 2011-11-25T06:48:23.323 # Date (julian) = 2455890.78360327 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.8325 8.5460642e+10 0.096681066 0.035549732 150.62964 33.940018 6513.4174 7.3616532e+10 0.10831060 0.036329187 150.71079 33.771933 6516.0022 6.3622938e+10 0.12011888 0.037108642 150.78595 33.614105 6518.5871 5.5296529e+10 0.13216986 0.037888097 150.85189 33.472084 6521.1719 4.8516952e+10 0.14451710 0.038667552 150.92424 33.321510 6523.7568 4.2821656e+10 0.15206186 0.039366682 151.00539 33.159221 6526.3416 3.8065880e+10 0.15669408 0.040026263 151.07946 33.007534 6528.9265 3.4164627e+10 0.16056417 0.042177475 151.15046 32.860463 6531.5113 3.0827005e+10 0.16381907 0.045972954 151.22462 32.702360 6534.0962 2.7644605e+10 0.16538158 0.047971468 151.29993 32.540153 6536.6811 2.4664297e+10 0.16555727 0.048399857 151.36590 32.398061 6539.2659 2.2206691e+10 0.16590485 0.049965499 151.43196 32.256060 6541.8508 2.0325285e+10 0.16552920 0.051050636 151.50297 32.114060 6544.4356 1.8615580e+10 0.16502154 0.051997721 151.57422 31.970926 6547.0205 1.6963588e+10 0.16477243 0.053295145 151.64956 31.808638 6549.6053 1.5450511e+10 0.16411948 0.054583140 151.72179 31.653056 6552.1902 1.4142718e+10 0.16348520 0.055538903 151.78772 31.511056 6554.7750 1.2997153e+10 0.16169369 0.054848644 151.85495 31.361776 6557.3599 1.1924790e+10 0.15919294 0.053640542 151.92450 31.199487 6559.9447 1.0935553e+10 0.15623203 0.052280549 151.99176 31.046837 6562.5296 1.0082966e+10 0.15285862 0.050375998 152.05769 30.899766 6565.1144 9.4406076e+09 0.15026710 0.048188470 152.12362 30.756050 6567.6993 8.8593530e+09 0.14817494 0.046025934 152.18955 30.614049 6570.2841 8.2429040e+09 0.14674238 0.044799815 152.25798 30.458054 6572.8690 7.6494511e+09 0.14513596 0.043732515 152.32753 30.295766 6575.4538 7.1129516e+09 0.14312170 0.041919375 152.39359 30.153045 6578.0387 6.6776171e+09 0.14085106 0.038588534 152.45952 30.011044 6580.6235 6.3551488e+09 0.13826074 0.035944520 152.52041 29.869044 6583.2084 6.0229318e+09 0.13630242 0.034916192 152.58145 29.726621 6585.7932 5.6525881e+09 0.13415585 0.033336600 152.65100 29.564332 6588.3781 5.2861052e+09 0.13256307 0.033253667 152.71798 29.408039 6590.9629 4.9450370e+09 0.12994515 0.029270849 152.77884 29.266038 6593.5478 4.6749555e+09 0.12746381 0.026592942 152.83971 29.125673 6596.1326 4.4449627e+09 0.12414497 0.025726671 152.90057 28.988724 6598.7175 4.1962491e+09 0.12175180 0.025064608 152.96449 28.842851 6601.3023 3.9411368e+09 0.12126990 0.027188077 153.03404 28.680562 6603.8872 3.6926770e+09 0.11945520 0.026138055 153.09814 28.530991 6606.4720 3.4649313e+09 0.11840816 0.026655706 153.15900 28.388991 6609.0569 3.2869923e+09 0.11445936 0.023722834 153.21986 28.246990 6611.6418 3.1249370e+09 0.11062923 0.024549207 153.28072 28.104989 6614.2266 2.9514548e+09 0.10880428 0.023784371 153.34752 27.949129 6616.8115 2.7727669e+09 0.10694346 0.023409657 153.41707 27.786840 6619.3963 2.6008778e+09 0.10634103 0.024621537 153.47343 27.643985 6621.9812 2.4547039e+09 0.10555441 0.024764237 153.52922 27.501985 6624.5660 2.3481845e+09 0.10393981 0.025165293 153.59000 27.364985 6627.1509 2.2464610e+09 0.10206775 0.025375086 153.65090 27.227696 6629.7357 2.1329150e+09 0.10103656 0.025976085 153.71466 27.065407 6632.3206 2.0152592e+09 0.099367759 0.026070784 153.77611 26.908980 6634.9054 1.8916514e+09 0.098042066 0.026392888 153.83190 26.766979 6637.4903 1.7862461e+09 0.096594759 0.025921293 153.88768 26.626587 6640.0751 1.7031080e+09 0.096350477 0.025261461 153.94347 26.489657 6642.6600 1.6178788e+09 0.096247678 0.025178704 154.00401 26.343973 6645.2448 1.5266224e+09 0.095098879 0.025566376 154.07357 26.181685 6647.8297 1.4377034e+09 0.093807479 0.026874608 154.13459 26.031973 6650.4145 1.3560132e+09 0.092845413 0.026350134 154.19037 25.889973 6652.9994 1.2934774e+09 0.092138251 0.027525491 154.24616 25.751259 6655.5842 1.2372409e+09 0.090135308 0.027851622 154.30195 25.614331 6658.1691 1.1747275e+09 0.088029371 0.030360952 154.35920 25.460252 6660.7539 1.1134947e+09 0.086022811 0.032311288 154.41715 25.297964 6663.3388 1.0534426e+09 0.084231392 0.032389327 154.47305 25.159790 6665.9236 1.0018120e+09 0.083504571 0.027033716 154.52883 25.022861 6668.5085 9.6517204e+08 0.081952905 0.027920752 154.58463 24.880945 6671.0933 9.3056275e+08 0.081278093 0.026866678 154.64049 24.738793 6673.6782 8.9080604e+08 0.080338997 0.028473506 154.70424 24.582321 6676.2630 8.4432082e+08 0.077809726 0.031883255 154.76432 24.429919 6678.8479 7.9490987e+08 0.076877453 0.030369504 154.81503 24.287919 6681.4327 7.5736032e+08 0.078098182 0.029989357 154.86732 24.147494 6684.0176 7.2874336e+08 0.078502283 0.032654985 154.92311 24.010565 6686.6025 6.9888551e+08 0.077365241 0.034111600 154.97963 23.865049 6689.1873 6.6262443e+08 0.074276659 0.033847421 155.03759 23.702759 6691.7722 6.2686157e+08 0.073253779 0.032819085 155.09421 23.556023 6694.3570 5.9795843e+08 0.072304100 0.030760662 155.15000 23.419095 6696.9419 5.6876533e+08 0.071927530 0.030067109 155.20718 23.269617 6699.5267 5.4507148e+08 0.070336526 0.031104429 155.26514 23.113123 6702.1116 5.2051592e+08 0.068410859 0.032965813 155.31646 22.969908 6704.6964 4.9753877e+08 0.068807907 0.036519530 155.36717 22.827908 6707.2813 4.7955016e+08 0.068380879 0.040146535 155.42473 22.672221 6709.8661 4.5632927e+08 0.067309125 0.040581650 155.48111 22.520013 6712.4510 4.3414408e+08 0.064825449 0.042667258 155.53183 22.383084 6715.0358 4.1559105e+08 0.062423498 0.047415225 155.58433 22.241320 6717.6207 3.9949447e+08 0.059878499 0.049835877 155.64229 22.084826 6720.2055 3.8561036e+08 0.058367117 0.050395953 155.69647 21.935896 6722.7904 3.7286356e+08 0.057645008 0.049628093 155.74718 21.793896 6725.3752 3.5407204e+08 0.052987791 0.041341633 155.80188 21.643924 6727.9601 3.3702705e+08 0.051726404 0.039681285 155.85984 21.487431 6730.5449 3.2207170e+08 0.050019591 0.041126070 155.91182 21.347073 6733.1298 3.0964873e+08 0.048488864 0.044628937 155.96254 21.210146 6735.7146 2.9960773e+08 0.049314096 0.050052070 156.01944 21.056530 6738.2995 2.8423240e+08 0.050897332 0.058969903 156.07648 20.902532 6740.8843 2.7171484e+08 0.050055534 0.065561102 156.12719 20.765603 6743.4692 2.6351694e+08 0.045433504 0.074212583 156.17812 20.625627 6746.0540 2.5552082e+08 0.042898728 0.078358981 156.23028 20.469134 6748.6389 2.4563981e+08 0.038955642 0.070378140 156.28494 20.312641 6751.2237 2.3227309e+08 0.035519228 0.073806272 156.34291 20.156149 6753.8086 2.1889392e+08 0.032753939 0.075594057 156.39218 20.013450 6756.3934 2.1158178e+08 0.029681604 0.075179310 156.43782 19.876521 6758.9783 2.0333174e+08 0.029807978 0.075774068 156.49250 19.725245 6761.5632 1.9425030e+08 0.031979935 0.078014752 156.55041 19.568752 6764.1480 1.8484348e+08 0.036440599 0.079490376 156.60258 19.412259 6766.7329 1.7464406e+08 0.037232269 0.081371480 156.65638 19.255766 6769.3177 1.6868571e+08 0.031715122 0.085224841 156.71435 19.099273 6771.9026 1.6234833e+08 0.026843183 0.091494242 156.76544 18.953685 6774.4874 1.5656697e+08 0.021970559 0.097763644 156.81108 18.816756 6777.0723 1.5342151e+08 0.017100205 0.10403305 156.86054 18.671765 6779.6571 1.4740248e+08 0.012235376 0.11030245 156.91271 18.521067 6782.2420 1.4170320e+08 0.0073736044 0.11657185 156.96986 18.365384 6784.8268 1.3683010e+08 0.0025314570 0.12284125 157.02704 18.208890 6787.4117 1.3101433e+08 -0.0022847448 0.12911065 157.07920 18.052397 6789.9965 1.2796514e+08 -0.0070261584 0.13538006 157.13136 17.895904 6792.5814 1.2149342e+08 -0.011774591 0.14164946 157.18353 17.739412 6795.1662 1.1413159e+08 -0.016530045 0.14791886 157.23569 17.582919 6797.7511 1.0976553e+08 -0.021228060 0.15418826 157.28785 17.426426 6800.3359 1.0482039e+08 -0.025930858 0.16045766 157.34002 17.275490 6802.9208 99497079. -0.030637331 0.16672706 157.39219 17.123439 6805.5056 95000264. -0.035320455 0.17299647 157.44435 16.966945 6808.0905 90665463. -0.039996220 0.17926587 157.49652 16.810451 6810.6753 87051661. -0.044642764 0.18553527 157.54868 16.653959 6813.2602 87229393. -0.049144745 0.19180467 157.60084 16.502004 6815.8450 83697741. -0.053786182 0.19807407 157.65300 16.350973 6818.4299 82194984. -0.058350555 0.20434348 157.70517 16.194479 6821.0147 79751631. -0.062964776 0.21061288 157.75734 16.039913 6823.5996 74934480. -0.067720434 0.21688228 157.80950 15.889215 6826.1844 71319821. -0.072460291 0.22315168 157.86167 15.734999 6828.7693 67708150. -0.077268785 0.22942108 157.91383 15.578506 6831.3541 64487994. -0.082143444 0.23569049 157.96088 15.427123 6833.9390 64848052. -0.086864996 0.24195989 158.00816 15.275519 6836.5239 62773929. -0.091933551 0.24822929 158.06032 15.119026 6839.1087 57097530. -0.097689642 0.25449869 158.11623 14.954201 6841.6936 54912219. -0.10364053 0.26076809 158.17709 14.778384 6844.2784 50372223. -0.11110527 0.26703749 158.22415 14.620969 6846.8633 50099305. -0.12067754 0.27330690 158.27184 14.465791 6849.4481 49763106. -0.15476645 0.27957630 158.32401 14.315094 6852.0330 47738553. -0.13551612 0.28584570 158.37714 14.151793 6854.6178 48040191. -0.084713701 0.29211510 158.43119 13.976416