# # 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 = 54.279886 km # Date (UTC) = 2014-02-05T09:20:21.119 # Date (julian) = 2456693.88913332 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.9403 4.9192812e+10 0.037830235 0.031360570 14.681687 72.232591 6499.2658 4.4488765e+10 0.045045618 0.032061802 13.030661 71.972532 6501.5912 4.0918189e+10 0.052325302 0.032763034 11.785007 71.751799 6503.9167 3.7731583e+10 0.059796695 0.033464266 10.270098 71.474439 6506.2421 3.4877083e+10 0.067597346 0.034165498 9.0469414 71.231386 6508.5675 3.2028416e+10 0.075742943 0.034866731 7.9300158 71.004100 6510.8930 2.9305624e+10 0.084358866 0.035567963 6.6692750 70.725336 6513.2184 2.6746919e+10 0.093565942 0.036269195 5.4515514 70.435575 6515.5439 2.4408150e+10 0.10348548 0.036970427 4.5176976 70.204426 6517.8693 2.2637758e+10 0.11457274 0.037671659 3.6031416 69.968148 6520.1948 2.0969855e+10 0.12647034 0.038372891 2.7172508 69.724791 6522.5202 1.9155936e+10 0.13750785 0.039053478 1.6095863 69.414808 6524.8457 1.7312892e+10 0.14462414 0.039727389 0.77008036 69.166543 6527.1711 1.5521309e+10 0.15030371 0.040840704 -0.055243318 68.911041 6529.4966 1.4291787e+10 0.15588713 0.043026768 -0.85200834 68.655504 6531.8220 1.3313865e+10 0.16194516 0.046425125 -1.4484872 68.451456 6534.1475 1.2487147e+10 0.16631226 0.047985807 -2.1862610 68.194227 6536.4729 1.1639993e+10 0.16926075 0.048213620 -2.9380507 67.926608 6538.7983 1.0691977e+10 0.17167361 0.049545435 -3.6710272 67.654346 6541.1238 9.8349565e+09 0.17196216 0.051286382 -4.2840890 67.418447 6543.4492 9.1555294e+09 0.17076722 0.051499799 -4.8888803 67.181329 6545.7747 8.6133005e+09 0.16857761 0.052462508 -5.4659592 66.946124 6548.1001 8.0954908e+09 0.16707574 0.053697550 -6.0561310 66.691719 6550.4256 7.5909933e+09 0.16545330 0.055091921 -6.5948274 66.458868 6552.7510 7.1233137e+09 0.16389998 0.055397733 -7.1749773 66.197702 6555.0765 6.6640798e+09 0.16217547 0.054789108 -7.6806979 65.964294 6557.4019 6.2101257e+09 0.16010204 0.053614182 -8.2498180 65.693691 6559.7274 5.8218547e+09 0.15784757 0.052305082 -8.7154932 65.466288 6562.0528 5.4494997e+09 0.15543709 0.050829649 -9.1626546 65.247271 6564.3783 5.1303922e+09 0.15289096 0.048600170 -9.6961482 64.977714 6566.7037 4.8272303e+09 0.15111821 0.046784800 -10.143532 64.741315 6569.0292 4.5484697e+09 0.14934114 0.044854322 -10.558226 64.513210 6571.3546 4.3250318e+09 0.14809008 0.044406427 -10.968871 64.285074 6573.6800 4.1151229e+09 0.14601970 0.043111762 -11.374232 64.056914 6576.0055 3.9177598e+09 0.14365298 0.041365073 -11.771284 63.828787 6578.3309 3.7245917e+09 0.14101973 0.038127026 -12.160073 63.600669 6580.6564 3.5409107e+09 0.13812893 0.035914160 -12.540646 63.372532 6582.9818 3.3772689e+09 0.13563010 0.035026611 -12.914736 63.142606 6585.3073 3.2017514e+09 0.13285260 0.033725113 -13.287954 62.905330 6587.6327 3.0355940e+09 0.13010743 0.033298557 -13.652828 62.668185 6589.9582 2.8842313e+09 0.12715885 0.031145057 -14.008755 62.440027 6592.2836 2.7304679e+09 0.12400082 0.027798049 -14.356262 62.203610 6594.6091 2.5806546e+09 0.12141399 0.025838178 -14.703043 61.966340 6596.9345 2.4363516e+09 0.11897408 0.025723025 -15.043269 61.729055 6599.2600 2.3086666e+09 0.11749816 0.024945365 -15.334144 61.521451 6601.5854 2.2018197e+09 0.11754580 0.027321381 -15.613656 61.319582 6603.9108 2.0902873e+09 0.11626970 0.026124055 -15.939289 61.082308 6606.2363 1.9805125e+09 0.11598637 0.027079351 -16.246055 60.847615 6608.5617 1.8871633e+09 0.11334216 0.023717519 -16.501577 60.650498 6610.8872 1.7971159e+09 0.11015464 0.024850665 -16.788736 60.425543 6613.2126 1.7050846e+09 0.10905396 0.023651606 -17.089851 60.188299 6615.5381 1.6124686e+09 0.10763402 0.023268087 -17.360774 59.971185 6617.8635 1.5153990e+09 0.10680861 0.023725548 -17.608408 59.767592 6620.1890 1.4460883e+09 0.10594543 0.024828094 -17.898033 59.523261 6622.5144 1.3798211e+09 0.10435269 0.024621072 -18.124354 59.333445 6624.8399 1.3111785e+09 0.10255620 0.025311885 -18.388353 59.105951 6627.1653 1.2547107e+09 0.10016240 0.025380667 -18.634816 58.887666 6629.4908 1.1844604e+09 0.098766813 0.026020374 -18.864744 58.680730 6631.8162 1.1304220e+09 0.096569229 0.026013675 -19.132065 58.440217 6634.1416 1.0690664e+09 0.094691657 0.026337175 -19.343782 58.250402 6636.4671 1.0076581e+09 0.092821282 0.026368360 -19.594329 58.019073 6638.7925 9.5433921e+08 0.091231473 0.025637113 -19.820502 57.804159 6641.1180 8.9838048e+08 0.091416287 0.025148701 -20.024920 57.607041 6643.4434 8.5513271e+08 0.090453470 0.025259572 -20.229339 57.409922 6645.7689 8.0770095e+08 0.089314843 0.025811877 -20.471440 57.160359 6648.0943 7.6481442e+08 0.088387269 0.027027428 -20.678260 56.951741 6650.4198 7.2742417e+08 0.087822189 0.026351335 -20.875376 56.754624 6652.7452 6.9510952e+08 0.087474364 0.027455561 -21.072027 56.557510 6655.0707 6.6431084e+08 0.086351857 0.027639416 -21.261798 56.360440 6657.3961 6.3287567e+08 0.084493866 0.029360590 -21.478182 56.129162 6659.7216 6.0233712e+08 0.083029576 0.031684080 -21.679040 55.907875 6662.0470 5.7193456e+08 0.081532208 0.033017898 -21.861522 55.705156 6664.3725 5.4529782e+08 0.080347173 0.030843301 -22.044039 55.508037 6666.6979 5.1497004e+08 0.080230657 0.027044589 -22.220292 55.310920 6669.0233 4.9366984e+08 0.078817328 0.028331726 -22.395507 55.110240 6671.3488 4.6916640e+08 0.078819835 0.026870319 -22.575897 54.900866 6673.6742 4.4333305e+08 0.078064118 0.028467589 -22.793730 54.655460 6675.9997 4.1700925e+08 0.075652056 0.031713119 -22.961644 54.451043 6678.3251 3.8830949e+08 0.074534831 0.030719153 -23.129558 54.251389 6680.6506 3.6883918e+08 0.074904591 0.029581903 -23.297461 54.052222 6682.9760 3.4641118e+08 0.075468133 0.031170262 -23.465334 53.847855 6685.3015 3.2574200e+08 0.075019912 0.033023263 -23.626583 53.650104 6687.6269 3.0622733e+08 0.072682487 0.033993263 -23.787198 53.449022 6689.9524 2.8670928e+08 0.070266483 0.033158746 -23.946542 53.245874 6692.2778 2.7113036e+08 0.068969284 0.032442727 -24.099817 53.048804 6694.6033 2.5150910e+08 0.068179424 0.030415534 -24.253124 52.845834 6696.9287 2.3775260e+08 0.067758585 0.030061642 -24.406437 52.641418 6699.2541 2.2751878e+08 0.066438378 0.031355927 -24.559747 52.437468 6701.5796 2.2118410e+08 0.064608688 0.032259875 -24.713024 52.240398 6703.9050 2.1845355e+08 0.064674906 0.035939933 -24.861262 52.038233 6706.2305 2.1358045e+08 0.064641699 0.038847548 -25.007274 51.836180 6708.5559 2.1227155e+08 0.064060743 0.040648969 -25.153287 51.639063 6710.8814 2.0683702e+08 0.062382853 0.040669014 -25.299268 51.435025 6713.2068 2.0140383e+08 0.060179095 0.044434667 -25.441003 51.230626 6715.5323 1.9420485e+08 0.058111334 0.047922981 -25.579714 51.026210 6717.8577 1.8829254e+08 0.055891506 0.049821215 -25.718426 50.821793 6720.1832 1.8457794e+08 0.054670712 0.050398544 -25.857138 50.623541 6722.5086 1.7748031e+08 0.054325264 0.049976429 -25.995835 50.422982 6724.8341 1.6793661e+08 0.050397589 0.042961750 -26.131460 50.222175 6727.1595 1.5727528e+08 0.048443275 0.040747882 -26.240964 50.051833 6729.4849 1.4907413e+08 0.047801929 0.040722196 -26.360565 49.865786 6731.8104 1.4466348e+08 0.045881496 0.043362862 -26.491974 49.662039 6734.1358 1.3824846e+08 0.044904573 0.049345426 -26.623355 49.464967 6736.4613 1.3340695e+08 0.046764886 0.052098935 -26.754758 49.262599 6738.7867 1.2448188e+08 0.047853517 0.061652430 -26.883604 49.058182 6741.1122 1.1773287e+08 0.046717345 0.066078638 -27.007715 48.853762 6743.4376 1.1410204e+08 0.042452850 0.073999665 -27.131826 48.649346 6745.7631 1.0547085e+08 0.040346993 0.078887676 -27.255918 48.449424 6748.0885 1.0216746e+08 0.036315235 0.067482609 -27.380006 48.250578 6750.4140 99670430. 0.033712526 0.072710996 -27.504117 48.046162 6752.7394 1.0411675e+08 0.030932944 0.073278837 -27.604881 47.871460 6755.0649 1.1346466e+08 0.029045886 0.074576909 -27.706657 47.693352 6757.3903 1.1425350e+08 0.026857205 0.075555582 -27.823440 47.488980 6759.7158 1.1060802e+08 0.027924522 0.075992677 -27.940246 47.284570 6762.0412 1.0103863e+08 0.031866873 0.077984388 -28.057056 47.080153 6764.3666 90803305. 0.035292861 0.079500850 -28.173866 46.876603 6766.6921 83376076. 0.036263378 0.081279270 -28.290675 46.679486 6769.0175 77153264. 0.031649610 0.084496797 -28.401998 46.476937 6771.3430 75881060. 0.027533901 0.090137027 -28.504574 46.285460 6773.6684 73740473. 0.023444888 0.095777256 -28.595829 46.115119 6775.9939 71206837. 0.019370887 0.10141749 -28.700503 45.919729 6778.3193 66457186. 0.015363147 0.10705772 -28.810012 45.715311 6780.6448 62249842. 0.011359718 0.11269795 -28.919521 45.510903 6782.9702 60760566. 0.0072899960 0.11833818 -29.029005 45.313791 6785.2957 60362288. 0.0031906971 0.12397841 -29.138505 45.112124 6787.6211 59163900. -0.00087465056 0.12961864 -29.241788 44.916423 6789.9466 55650232. -0.0048499559 0.13525886 -29.326959 44.746083 6792.2720 51480200. -0.0087692503 0.14089909 -29.422543 44.554916 6794.5974 47905233. -0.012663969 0.14653932 -29.524733 44.350536 6796.9229 46332629. -0.016580370 0.15217955 -29.626941 44.146116 6799.2483 46490402. -0.020455006 0.15781978 -29.729150 43.948066 6801.5738 47314876. -0.024560806 0.16346001 -29.827691 43.747281 6803.8992 46087588. -0.027756395 0.16910024 -29.923564 43.542871 6806.2247 46430974. -0.032837329 0.17474047 -30.025749 43.338502 6808.5501 44757645. -0.038709224 0.18038070 -30.122384 43.134094