# # 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 = 50.493485 km # Date (UTC) = 2015-12-18T09:14:21.035 # Date (julian) = 2457374.88496568 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.8111 8.5616954e+10 0.039508569 0.031924709 118.16108 27.281594 6501.0581 7.6996893e+10 0.048619687 0.032602282 118.21203 27.175634 6503.3051 6.8644529e+10 0.057915210 0.033279855 118.26297 27.065896 6505.5521 6.1610463e+10 0.067565393 0.033957428 118.31392 26.956159 6507.7991 5.5338564e+10 0.077577983 0.034635002 118.36487 26.848343 6510.0461 5.0098309e+10 0.088093980 0.035312575 118.41581 26.742539 6512.2931 4.5489320e+10 0.099089666 0.035990148 118.46676 26.636736 6514.5400 4.1260294e+10 0.11053540 0.036667721 118.51770 26.530933 6516.7870 3.7302191e+10 0.12240186 0.037345294 118.56864 26.425130 6519.0340 3.3644713e+10 0.13467511 0.038022867 118.61958 26.319327 6521.2810 3.0353797e+10 0.14736664 0.038700440 118.67053 26.213523 6523.5280 2.7486993e+10 0.15609278 0.039309975 118.72147 26.107720 6525.7750 2.5007066e+10 0.16229819 0.039693768 118.77242 26.001905 6528.0220 2.2893236e+10 0.16880156 0.041459911 118.82337 25.896087 6530.2690 2.0987547e+10 0.17393219 0.044205230 118.87321 25.790273 6532.5159 1.9205489e+10 0.17793000 0.047115208 118.92024 25.684470 6534.7629 1.7567578e+10 0.17993041 0.048157979 118.96726 25.578666 6537.0099 1.6071210e+10 0.18023681 0.048689903 119.01714 25.470006 6539.2569 1.4718859e+10 0.17930832 0.049954606 119.06808 25.360284 6541.5039 1.3490516e+10 0.17724267 0.051163121 119.11833 25.251256 6543.7509 1.2369689e+10 0.17452237 0.051578965 119.16536 25.145453 6545.9979 1.1359077e+10 0.17170048 0.052464507 119.21238 25.039650 6548.2449 1.0440909e+10 0.17002261 0.053740768 119.26186 24.933837 6550.4918 9.6113144e+09 0.16800568 0.055108513 119.31281 24.828020 6552.7388 8.8544828e+09 0.16609814 0.055400803 119.36347 24.722203 6554.9858 8.1850442e+09 0.16396811 0.054853067 119.41049 24.616399 6557.2328 7.5955523e+09 0.16135773 0.053720184 119.45752 24.510596 6559.4798 7.0566409e+09 0.15847818 0.052333026 119.50454 24.404792 6561.7268 6.5781532e+09 0.15551488 0.051014540 119.55156 24.298989 6563.9738 6.1336560e+09 0.15228255 0.048801942 119.59858 24.193186 6566.2208 5.7331094e+09 0.14984118 0.047058004 119.64561 24.091184 6568.4677 5.3810595e+09 0.14777161 0.045341696 119.69263 23.989299 6570.7147 5.0475906e+09 0.14580256 0.044621444 119.74130 23.885770 6572.9617 4.7418711e+09 0.14358171 0.043679405 119.79224 23.779953 6575.2087 4.4562217e+09 0.14088230 0.042165311 119.84319 23.674135 6577.4557 4.1899552e+09 0.13779229 0.039504590 119.88735 23.568330 6579.7027 3.9539314e+09 0.13443723 0.036684203 119.93045 23.462526 6581.9497 3.7275272e+09 0.13134604 0.035309037 119.97479 23.356723 6584.1967 3.5152426e+09 0.12818944 0.034408386 120.02181 23.250920 6586.4436 3.3152643e+09 0.12509962 0.033165561 120.06884 23.145117 6588.6906 3.1334741e+09 0.12223256 0.033149293 120.11586 23.039314 6590.9376 2.9663259e+09 0.11892789 0.029317952 120.16288 22.933510 6593.1846 2.8027201e+09 0.11643744 0.026930595 120.20991 22.827703 6595.4316 2.6477683e+09 0.11386185 0.025668328 120.25694 22.721886 6597.6786 2.5038230e+09 0.11173880 0.025508593 120.30397 22.616068 6599.9256 2.3774668e+09 0.11089845 0.024985398 120.35100 22.512843 6602.1726 2.2646680e+09 0.11037270 0.027369382 120.39802 22.410958 6604.4195 2.1499522e+09 0.10916332 0.026320386 120.44463 22.308653 6606.6665 2.0353070e+09 0.10845719 0.026306232 120.48773 22.202849 6608.9135 1.9244455e+09 0.10554737 0.023708218 120.53084 22.097046 6611.1605 1.8288275e+09 0.10260462 0.024856102 120.57612 21.991242 6613.4075 1.7394859e+09 0.10156886 0.023723100 120.62314 21.885439 6615.6545 1.6502108e+09 0.10008394 0.023271668 120.67015 21.779650 6617.9015 1.5713864e+09 0.099201639 0.023738128 120.71326 21.677752 6620.1485 1.4926655e+09 0.098406949 0.024815037 120.75637 21.575853 6622.3954 1.4281653e+09 0.096867435 0.024652739 120.79948 21.472190 6624.6424 1.3604788e+09 0.095048935 0.025206198 120.84258 21.366387 6626.8894 1.2947268e+09 0.092919341 0.025457704 120.88569 21.260583 6629.1364 1.2316012e+09 0.091545017 0.026084443 120.93232 21.158306 6631.3834 1.1730416e+09 0.089564409 0.025969711 120.97935 21.056421 6633.6304 1.1179643e+09 0.087854125 0.026262311 121.02501 20.953173 6635.8774 1.0676107e+09 0.085957976 0.026531362 121.06811 20.847369 6638.1244 1.0253444e+09 0.084591277 0.025666225 121.11122 20.741566 6640.3713 9.7636467e+08 0.084539655 0.025225218 121.15862 20.628727 6642.6183 9.2510892e+08 0.084545338 0.025176999 121.20712 20.514087 6644.8653 8.7162110e+08 0.083877900 0.025437128 121.25277 20.404115 6647.1123 8.2809215e+08 0.082962136 0.026496908 121.29587 20.298312 6649.3593 7.8934523e+08 0.082134230 0.027138423 121.33897 20.192509 6651.6063 7.5689973e+08 0.081902682 0.026948790 121.38208 20.090532 6653.8533 7.2179183e+08 0.081481066 0.027961308 121.42518 19.988647 6656.1003 6.8803519e+08 0.079862736 0.028111410 121.46829 19.885099 6658.3472 6.6395950e+08 0.078425596 0.030676917 121.51140 19.779296 6660.5942 6.3414677e+08 0.077091560 0.032166122 121.55450 19.673492 6662.8412 6.0819470e+08 0.075876428 0.032572300 121.60231 19.559994 6665.0882 5.8045875e+08 0.075309078 0.028402607 121.65080 19.445371 6667.3352 5.4868465e+08 0.074934602 0.027226579 121.69604 19.338436 6669.5822 5.2680698e+08 0.074040598 0.027757765 121.73916 19.236538 6671.8292 5.0348351e+08 0.073953525 0.026877165 121.78227 19.134640 6674.0762 4.8618903e+08 0.073074780 0.029019031 121.82537 19.032755 6676.3231 4.6651793e+08 0.070724584 0.031921986 121.86848 18.930871 6678.5701 4.4666135e+08 0.069761984 0.030555288 121.91207 18.820401 6680.8171 4.2713972e+08 0.070473781 0.029617866 121.95616 18.701371 6683.0641 4.0323901e+08 0.071122104 0.031282524 122.00001 18.586325 6685.3111 3.7906285e+08 0.070844013 0.033033425 122.04312 18.484440 6687.5581 3.5210852e+08 0.068832834 0.034031655 122.08623 18.382555 6689.8051 3.3440893e+08 0.066600094 0.033291337 122.12933 18.280660 6692.0521 3.1870238e+08 0.065635354 0.032704884 122.17245 18.178762 6694.2990 3.0770304e+08 0.064904837 0.030841907 122.21568 18.075224 6696.5460 2.9440145e+08 0.064813977 0.029902649 122.25977 17.960601 6698.7930 2.7800535e+08 0.063837195 0.031306321 122.30385 17.845979 6701.0400 2.6595306e+08 0.062117898 0.031468141 122.34709 17.742319 6703.2870 2.5191553e+08 0.062077927 0.034393374 122.39020 17.640434 6705.5340 2.4092481e+08 0.062298121 0.037617909 122.43361 17.534617 6707.7810 2.3019619e+08 0.062086333 0.040074954 122.47769 17.419995 6710.0280 2.1742094e+08 0.061134017 0.040501966 122.52158 17.305887 6712.2749 2.1043161e+08 0.059009030 0.042340429 122.56077 17.204002 6714.5219 2.0676626e+08 0.056904794 0.047342647 122.59996 17.102116 6716.7689 2.0163036e+08 0.054948152 0.049533900 122.64369 16.994010 6719.0159 1.9374293e+08 0.052554267 0.051354731 122.69219 16.879389 6721.2629 1.8464024e+08 0.053082381 0.050383109 122.73971 16.764763 6723.5099 1.7398571e+08 0.051679796 0.049653311 122.78380 16.650124 6725.7569 1.6674073e+08 0.047597084 0.041103243 122.82789 16.535484 6728.0039 1.5977594e+08 0.046774486 0.039633559 122.86731 16.432990 6730.2508 1.5476760e+08 0.045336751 0.040722833 122.90650 16.331105 6732.4978 1.5122057e+08 0.043789352 0.043831857 122.94765 16.224122 6734.7448 1.4735584e+08 0.043490104 0.049308786 122.99173 16.109499 6736.9918 1.4270061e+08 0.045222019 0.054104569 123.03582 15.994876 6739.2388 1.3426256e+08 0.045855644 0.063118784 123.07990 15.880254 6741.4858 1.2431734e+08 0.044303336 0.067144153 123.12399 15.765631 6743.7328 1.1622073e+08 0.039838181 0.075990644 123.16384 15.662010 6745.9798 1.1205851e+08 0.038311463 0.078978766 123.20303 15.560125 6748.2267 1.1118280e+08 0.034228948 0.068209779 123.24375 15.454270 6750.4737 1.1103790e+08 0.031489891 0.072813038 123.28783 15.339647 6752.7207 1.0652629e+08 0.028744623 0.073300476 123.33192 15.225025 6754.9677 1.0283231e+08 0.027051552 0.074657287 123.37600 15.110403 6757.2147 99371279. 0.024569216 0.076088534 123.42009 14.995780 6759.4617 92102145. 0.025581353 0.075931364 123.46418 14.884562 6761.7087 87532660. 0.028275309 0.078026774 123.50827 14.774332 6763.9557 82299040. 0.032137976 0.079348219 123.55235 14.661875 6766.2026 79334416. 0.033658947 0.080172118 123.59644 14.547253 6768.4496 78493711. 0.029869191 0.082473885 123.64052 14.432630 6770.6966 76073221. 0.025348723 0.088569294 123.68461 14.318008 6772.9436 72242815. 0.021161625 0.094019226 123.72870 14.203386 6775.1906 68194659. 0.016886572 0.099469159 123.77279 14.093042 6777.4376 62943607. 0.012424123 0.10491909 123.81687 13.982828 6779.6846 59670775. 0.0077198054 0.11036902 123.85786 13.869519 6781.9316 59199907. 0.0019749624 0.11581896 123.89753 13.754896 6784.1785 55714868. -0.012715652 0.12126889 123.93912 13.642186 6786.4255 53826222. -0.0081322833 0.12671882 123.98321 13.531972 6788.6725 50290914. 0.0077708063 0.13216875 124.02729 13.421029