# # 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 = 43.223230 km # Date (UTC) = 2010-12-23T09:16:44.582 # Date (julian) = 2455553.88662711 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6508.7464 1.0948697e+11 0.093649730 0.034920661 112.07283 36.845089 6511.4015 9.0426970e+10 0.10601710 0.035721300 112.15155 36.724698 6514.0566 7.4769914e+10 0.11853669 0.036521938 112.23154 36.601667 6516.7117 6.2202967e+10 0.13125410 0.037322577 112.32010 36.461017 6519.3668 5.2002712e+10 0.14420569 0.038123216 112.40659 36.324632 6522.0219 4.3923824e+10 0.15741821 0.038922985 112.48531 36.204227 6524.6770 3.7760203e+10 0.16408244 0.039667467 112.56380 36.083585 6527.3321 3.3037644e+10 0.16923817 0.040957578 112.63789 35.958564 6529.9872 2.9079781e+10 0.17360239 0.043808307 112.71197 35.833544 6532.6423 2.5696809e+10 0.17631112 0.047220767 112.78606 35.712653 6535.2974 2.2802229e+10 0.17721580 0.048095285 112.86014 35.592264 6537.9525 2.0319175e+10 0.17766086 0.049134288 112.93423 35.468485 6540.6076 1.8170132e+10 0.17732174 0.051141150 113.00832 35.343465 6543.2627 1.6217735e+10 0.17574413 0.051450841 113.08770 35.212479 6545.9178 1.4409897e+10 0.17348352 0.052463790 113.17105 35.077038 6548.5729 1.2794391e+10 0.17149243 0.053838735 113.24836 34.948387 6551.2280 1.1407602e+10 0.16824482 0.055315785 113.32246 34.823350 6553.8831 1.0259174e+10 0.16343602 0.054891140 113.39655 34.700606 6556.5382 9.2644961e+09 0.15801930 0.053933999 113.47063 34.580217 6559.1933 8.3785439e+09 0.15240221 0.052365362 113.54317 34.459828 6561.8484 7.6101030e+09 0.14770201 0.050954603 113.61263 34.339439 6564.5035 6.9441859e+09 0.14387299 0.048543406 113.68209 34.218244 6567.1586 6.3519489e+09 0.14102447 0.046483077 113.75154 34.093223 6569.8137 5.8200501e+09 0.13861273 0.044905385 113.82107 33.968272 6572.4688 5.3522242e+09 0.13608096 0.043961678 113.89516 33.847863 6575.1239 4.9187413e+09 0.13321389 0.042250382 113.96926 33.727456 6577.7790 4.4889908e+09 0.13002849 0.038996728 114.04681 33.594196 6580.4341 4.0750220e+09 0.12683688 0.036119567 114.12495 33.458756 6583.0892 3.6928026e+09 0.12423280 0.034976509 114.19496 33.333062 6585.7443 3.3745593e+09 0.12134130 0.033375708 114.26442 33.208042 6588.3994 3.1138744e+09 0.11889357 0.033246544 114.33028 33.086612 6591.0545 2.8789315e+09 0.11542689 0.029140391 114.39511 32.966222 6593.7096 2.6696176e+09 0.11216814 0.026442489 114.46279 32.845822 6596.3647 2.4750514e+09 0.10827866 0.025725616 114.53226 32.725417 6599.0198 2.2799550e+09 0.10526980 0.024930922 114.60569 32.595766 6601.6749 2.0804940e+09 0.10451098 0.027363540 114.68383 32.455116 6604.3300 1.8925930e+09 0.10235051 0.026267234 114.75481 32.325346 6606.9851 1.7270449e+09 0.10060546 0.025733726 114.81964 32.204958 6609.6402 1.5922726e+09 0.096195634 0.023896109 114.88446 32.084568 6612.2953 1.4767534e+09 0.092564437 0.024100095 114.94929 31.964178 6614.9504 1.3722373e+09 0.090534994 0.023285685 115.01512 31.843788 6617.6055 1.2840749e+09 0.088673704 0.023640010 115.08458 31.723399 6620.2606 1.1958187e+09 0.087910627 0.024851185 115.15424 31.602133 6622.9157 1.1051301e+09 0.086726328 0.024514256 115.22718 31.466672 6625.5708 1.0159522e+09 0.085599507 0.026078777 115.29899 31.333301 6628.2259 9.3497878e+08 0.084163521 0.025794825 115.36382 31.212912 6630.8810 8.7218721e+08 0.082697378 0.025930473 115.42864 31.092522 6633.5361 8.1874166e+08 0.081410628 0.026245856 115.49347 30.967599 6636.1912 7.6936952e+08 0.079949780 0.026475489 115.55829 30.842578 6638.8463 7.2389487e+08 0.078956141 0.025634770 115.61932 30.721352 6641.5014 6.8273915e+08 0.079814234 0.025150003 115.67952 30.600961 6644.1565 6.3927206e+08 0.079046542 0.025360524 115.74811 30.470642 6646.8116 5.9605840e+08 0.078086925 0.026340277 115.82104 30.335201 6649.4667 5.5562481e+08 0.077120889 0.026990312 115.88455 30.210888 6652.1218 5.2031459e+08 0.076778100 0.027284044 115.94476 30.090483 6654.7769 4.9065062e+08 0.075806870 0.027705242 116.01235 29.961347 6657.4320 4.5963319e+08 0.073751764 0.029402265 116.08528 29.825906 6660.0871 4.2734898e+08 0.072203163 0.031705205 116.14979 29.700414 6662.7422 3.9743569e+08 0.070638052 0.032627830 116.20999 29.580024 6665.3973 3.7384066e+08 0.069914410 0.027896069 116.27018 29.459634 6668.0524 3.5386760e+08 0.069106287 0.027517184 116.33038 29.339244 6670.7075 3.3486539e+08 0.068459353 0.027000838 116.39315 29.213711 6673.3626 3.1303955e+08 0.067871520 0.028001581 116.46087 29.078270 6676.0177 2.9095491e+08 0.065416266 0.031725162 116.52541 28.949176 6678.6728 2.7373085e+08 0.064307862 0.030486585 116.58561 28.828770 6681.3279 2.5915946e+08 0.065455321 0.029908955 116.64779 28.704414 6683.9830 2.4532118e+08 0.066028892 0.032629250 116.71551 28.568973 6686.6382 2.2924823e+08 0.064965418 0.034132370 116.78065 28.440284 6689.2933 2.1292661e+08 0.061913448 0.033752051 116.84085 28.324525 6691.9484 2.0035925e+08 0.060781769 0.032777514 116.90242 28.205154 6694.6035 1.8788779e+08 0.059916322 0.030415256 116.97014 28.069714 6697.2586 1.7533227e+08 0.059311932 0.030123986 117.03588 27.938243 6699.9137 1.6390399e+08 0.057508643 0.030747391 117.09607 27.817853 6702.5688 1.5237576e+08 0.055882551 0.033330884 117.15651 27.695897 6705.2239 1.4586507e+08 0.055972735 0.037066577 117.21902 27.560457 6707.8790 1.3933895e+08 0.055361391 0.040060917 117.28153 27.425013 6710.5341 1.2999375e+08 0.053495930 0.040601030 117.34405 27.289551 6713.1892 1.2055271e+08 0.050679571 0.044370770 117.40596 27.159313 6715.8443 1.1074927e+08 0.047921522 0.048242073 117.46615 27.043553 6718.4994 1.0524880e+08 0.044877158 0.050590130 117.52659 26.925719 6721.1545 1.0058507e+08 0.044384814 0.050350439 117.58910 26.790278 6723.8096 95503344. 0.042173963 0.049820450 117.65161 26.654837 6726.4647 90202877. 0.037477008 0.040955558 117.71413 26.519397 6729.1198 85104984. 0.036329141 0.040965602 117.77479 26.389194 6731.7749 81022070. 0.033725536 0.043292148 117.83035 26.273434 6734.4300 78967928. 0.032672234 0.049327730 117.88665 26.155578 6737.0851 76981856. 0.034476060 0.054406545 117.94917 26.020137 6739.7402 72055812. 0.034247831 0.063732375 118.01168 25.884693 6742.3953 67726321. 0.030518211 0.069573895 118.07420 25.749232 6745.0504 62867243. 0.024798072 0.078588061 118.13672 25.615170 6747.7055 59099276. 0.018579157 0.067118295 118.19923 25.484938 6750.3606 56906598. 0.012303703 0.072619820 118.26174 25.352895 6753.0157 50191927. -0.012854888 0.073028005 118.32425 25.217455 6755.6708 47793874. -0.00035204124 0.074311255 118.38379 25.090440 6760.9810 45948737. 0.041832310 0.077931943 118.49539 24.853636