# # 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 = 43.803051 km # Date (UTC) = 2016-12-08T09:42:53.581 # Date (julian) = 2457730.90478682 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.9281 1.0997465e+11 0.052365551 0.032563066 -24.135599 53.129394 6502.7051 9.5353369e+10 0.060285298 0.033098930 -24.231670 53.058115 6504.4822 8.2721163e+10 0.068303753 0.033634793 -24.327170 52.986836 6506.2592 7.2442698e+10 0.076545439 0.034170656 -24.420143 52.915557 6508.0363 6.4597493e+10 0.085157719 0.034706520 -24.513116 52.844278 6509.8133 5.7709064e+10 0.094001502 0.035242383 -24.606089 52.772999 6511.5903 5.2050169e+10 0.10317263 0.035778247 -24.699073 52.698742 6513.3674 4.7016738e+10 0.11257307 0.036314110 -24.792058 52.624353 6515.1444 4.2642331e+10 0.12223739 0.036849974 -24.885043 52.549965 6516.9215 3.8791992e+10 0.13214624 0.037385837 -24.978018 52.477851 6518.6985 3.5352606e+10 0.14226533 0.037921701 -25.070991 52.406572 6520.4756 3.2470001e+10 0.15263333 0.038457564 -25.163963 52.335293 6522.2526 2.9812097e+10 0.16240953 0.038983402 -25.255371 52.262450 6524.0297 2.7343302e+10 0.16771025 0.039437498 -25.345245 52.188073 6525.8067 2.5044575e+10 0.17224684 0.039690147 -25.435119 52.113695 6527.5838 2.2926703e+10 0.17733152 0.041140285 -25.524131 52.040180 6529.3608 2.1027204e+10 0.18026101 0.042810510 -25.610906 51.968901 6531.1378 1.9343630e+10 0.18203286 0.045429317 -25.697680 51.897622 6532.9149 1.7873393e+10 0.18428825 0.047448489 -25.784615 51.826183 6534.6919 1.6547745e+10 0.18413997 0.048138120 -25.874500 51.751795 6536.4690 1.5383913e+10 0.18235293 0.048210114 -25.964385 51.677406 6538.2460 1.4342625e+10 0.18165065 0.049276485 -26.054270 51.603018 6540.0231 1.3399866e+10 0.18083723 0.050865004 -26.141589 51.531195 6541.8001 1.2558622e+10 0.17805876 0.051067056 -26.228364 51.459916 6543.5772 1.1762518e+10 0.17578499 0.051533374 -26.315139 51.388637 6545.3542 1.0969936e+10 0.17397723 0.052458740 -26.406318 51.309941 6547.1313 1.0143459e+10 0.17214873 0.053337280 -26.500454 51.226263 6548.9083 9.3442827e+09 0.16964011 0.053938897 -26.594591 51.142586 6550.6854 8.6019318e+09 0.16801512 0.055156966 -26.683352 51.065698 6552.4624 7.9794923e+09 0.16640161 0.055470381 -26.770126 50.991321 6554.2394 7.4321371e+09 0.16381445 0.054837405 -26.856900 50.916943 6556.0165 6.9270526e+09 0.16118592 0.054010701 -26.942115 50.844125 6557.7935 6.4941277e+09 0.15911250 0.053368718 -27.025790 50.772846 6559.5706 6.0912981e+09 0.15610868 0.052322779 -27.109466 50.701568 6561.3476 5.7353176e+09 0.15268593 0.051201379 -27.192287 50.629429 6563.1247 5.3860113e+09 0.14970809 0.049784151 -27.272874 50.555040 6564.9017 5.0534124e+09 0.14680820 0.048362939 -27.353461 50.480652 6566.6788 4.7617097e+09 0.14362815 0.046798910 -27.434204 50.406263 6568.4558 4.4920918e+09 0.14075497 0.045352665 -27.517879 50.331885 6570.2329 4.2380654e+09 0.13823234 0.044821053 -27.601555 50.257506 6572.0099 4.0094587e+09 0.13542417 0.044224486 -27.685230 50.183128 6573.7869 3.7808710e+09 0.13234486 0.043025976 -27.763801 50.108750 6575.5640 3.5706803e+09 0.13003627 0.041808847 -27.841279 50.034373 6577.3410 3.3719081e+09 0.12785836 0.039684684 -27.918756 49.959995 6579.1181 3.1806143e+09 0.12522411 0.037005582 -27.998082 49.885617 6580.8951 3.0123833e+09 0.12306897 0.035693525 -28.078658 49.811238 6582.6722 2.8442590e+09 0.12141365 0.035110877 -28.159233 49.736860 6584.4492 2.6908380e+09 0.11936356 0.034270803 -28.238667 49.663624 6586.2263 2.5412412e+09 0.11735245 0.033168371 -28.316154 49.592336 6588.0033 2.4018040e+09 0.11591928 0.033378825 -28.393642 49.521048 6589.7804 2.2778243e+09 0.11385512 0.031497817 -28.471128 49.449315 6591.5574 2.1540885e+09 0.11140940 0.028572944 -28.548605 49.374938 6593.3345 2.0512769e+09 0.10923156 0.026791284 -28.626082 49.300561 6595.1115 1.9545380e+09 0.10685255 0.025635134 -28.703559 49.226183 6596.8885 1.8646293e+09 0.10423957 0.025723234 -28.781037 49.151805 6598.6656 1.7793874e+09 0.10219425 0.025089391 -28.858514 49.077426 6600.4426 1.6960637e+09 0.10157692 0.025899847 -28.935991 49.003047 6602.2197 1.6089143e+09 0.10057482 0.027329168 -29.017747 48.922252 6603.9967 1.5170061e+09 0.098838897 0.026073215 -29.101425 48.838576 6605.7738 1.4238551e+09 0.098322918 0.027314175 -29.185102 48.754900 6607.5508 1.3279909e+09 0.096462689 0.024619340 -29.261144 48.678858 6609.3279 1.2577042e+09 0.093463377 0.023803322 -29.335531 48.604470 6611.1049 1.1947275e+09 0.090650710 0.024891556 -29.409919 48.530081 6612.8820 1.1369445e+09 0.089693863 0.023661790 -29.484301 48.455699 6614.6590 1.0825030e+09 0.088754617 0.023486468 -29.558679 48.381320 6616.4360 1.0243686e+09 0.087732502 0.023350736 -29.633058 48.306941 6618.2131 9.7442734e+08 0.087530683 0.023931705 -29.707436 48.232563 6619.9901 9.2566843e+08 0.087271369 0.024764818 -29.781814 48.158186 6621.7672 8.7749886e+08 0.086501034 0.024835161 -29.856192 48.083808 6623.5442 8.3201442e+08 0.085283399 0.024693454 -29.930130 48.009430 6625.3213 7.9206819e+08 0.084540237 0.025780981 -30.001409 47.935052 6627.0983 7.5607999e+08 0.082891818 0.025354790 -30.072687 47.860673 6628.8754 7.2091362e+08 0.082201507 0.026058502 -30.143966 47.786295 6630.6524 6.8618513e+08 0.081040084 0.025929909 -30.215254 47.711908 6632.4295 6.4826315e+08 0.080002460 0.026083841 -30.286542 47.637521 6634.2065 6.2009442e+08 0.078823414 0.026341906 -30.357830 47.563134 6635.9835 5.9378455e+08 0.077623696 0.026547286 -30.435252 47.482345 6637.7606 5.6042139e+08 0.076925477 0.025788896 -30.515443 47.398668 6639.5376 5.3370469e+08 0.076511379 0.025435910 -30.595634 47.314991 6641.3147 4.9406123e+08 0.077082370 0.025149369 -30.665965 47.238947 6643.0917 4.5915459e+08 0.076831096 0.025206469 -30.734145 47.164569 6644.8688 4.3873064e+08 0.075997312 0.025437502 -30.802325 47.090192 6646.6458 4.1839785e+08 0.074990374 0.026254447 -30.870505 47.015813 6648.4229 4.0511111e+08 0.074022089 0.027247355 -30.938685 46.941435 6650.1999 3.9247535e+08 0.073481913 0.026301003 -31.006864 46.867056 6651.9770 3.6605127e+08 0.073127649 0.027232865 -31.075048 46.792675 6653.7540 3.4156083e+08 0.072835956 0.027910630 -31.143237 46.718287 6655.5311 3.2645335e+08 0.071755075 0.027829648 -31.211426 46.643900 6657.3081 3.1481694e+08 0.070554807 0.029258496 -31.280816 46.568203 6659.0851 3.1216090e+08 0.069336896 0.031816837 -31.357519 46.484526 6660.8622 2.9833457e+08 0.068527762 0.032409687 -31.434223 46.400848 6662.6392 2.7397671e+08 0.067870200 0.032685623 -31.507755 46.319708 6664.4163 2.6461088e+08 0.067131605 0.030682932 -31.572837 46.245329 6666.1933 2.5727198e+08 0.067250670 0.026946267 -31.637918 46.170950 6667.9704 2.5526204e+08 0.066710381 0.027459892 -31.703000 46.096571 6669.7474 2.4920115e+08 0.066170118 0.027588051 -31.768080 46.022194 6671.5245 2.3204319e+08 0.066253907 0.026872822 -31.833161 45.947817 6673.3015 2.2937731e+08 0.065863368 0.027910148 -31.898241 45.873439 6675.0786 2.2385738e+08 0.064553411 0.029948821 -31.969988 45.791442 6676.8556 2.2010744e+08 0.062702126 0.032265154 -32.043204 45.707765 6678.6326 2.1278005e+08 0.062212639 0.030513472 -32.116421 45.624088 6680.4097 2.0005744e+08 0.062920067 0.029529886 -32.181900 45.546308 6682.1867 1.9212925e+08 0.063514964 0.030567219 -32.246982 45.468831 6683.9638 1.8318268e+08 0.063682660 0.032601018 -32.312064 45.391354 6685.7408 1.7638767e+08 0.063310732 0.033487338 -32.380520 45.309377 6687.5179 1.6922709e+08 0.061462553 0.034054075 -32.450260 45.225688 6689.2949 1.5994593e+08 0.059288318 0.033750547 -32.520001 45.141999 6691.0720 1.5388506e+08 0.058561906 0.032984283 -32.585750 45.066286 6692.8490 1.4894342e+08 0.057958745 0.031779420 -32.650832 44.991907 6694.6261 1.4252317e+08 0.057428462 0.030383571 -32.715914 44.917528 6696.4031 1.3752687e+08 0.057288793 0.029843268 -32.779042 44.843151 6698.1802 1.2914419e+08 0.056652653 0.030465096 -32.841023 44.768773 6699.9572 1.2410470e+08 0.055464124 0.030707213 -32.903003 44.694396 6701.7342 1.1969561e+08 0.054072938 0.032486789 -32.968108 44.616270 6703.5113 1.1742620e+08 0.054394380 0.034954642 -33.037839 44.532592 6705.2883 1.1788321e+08 0.054652048 0.037181207 -33.107570 44.448915 6707.0654 1.1504236e+08 0.054440865 0.040177460 -33.171498 44.370212 6708.8424 1.0615705e+08 0.054065892 0.040960951 -33.230382 44.295833 6710.6195 95913783. 0.052837011 0.040617749 -33.289266 44.221454 6712.3965 88417239. 0.051192170 0.042566160 -33.350421 44.144206 6714.1736 88017639. 0.049579919 0.047316457 -33.416674 44.060518 6715.9506 85673379. 0.048373670 0.048350844 -33.482928 43.976829 6717.7277 82792862. 0.046817756 0.049829260 -33.550713 43.893146 6719.5047 77645496. 0.045495202 0.050890336 -33.620443 43.809468 6721.2817 75369073. 0.046024306 0.050388790 -33.690174 43.725791 6723.0588 76300209. 0.045335275 0.049401734 -33.753697 43.645662 6724.8358 68656382. 0.041871087 0.042946876 -33.812579 43.568185 6726.6129 69933146. 0.040397483 0.040956895 -33.871461 43.490708 6728.3899 68819872. 0.040306043 0.040180758 -33.931682 43.411089 6730.1670 67523673. 0.039290133 0.040607846 -33.994440 43.327413 6731.9440 68325527. 0.038176991 0.043628801 -34.057197 43.243737 6733.7211 60594572. 0.037445674 0.047839191 -34.121619 43.160060 6735.4981 54913739. 0.038547992 0.049822216 -34.187863 43.076383 6737.2752 49058790. 0.039840135 0.055012090 -34.254107 42.992705 6739.0522 44190502. 0.040325787 0.062890440 -34.313979 42.914693 6740.8293 45240361. 0.039563132 0.065466994 -34.369763 42.840315 6742.6063 46292815. 0.036980856 0.070088106 -34.425546 42.765938 6744.3833 48076727. 0.033389872 0.078089917 -34.485334 42.688000 6746.1604 47468645. 0.031671542 0.077122592 -34.551589 42.604310 6747.9374 44704889. 0.027383159 0.067038439 -34.617843 42.520620 6749.7145 39930426. 0.023496105 0.072082308 -34.682299 42.436937 6751.4915 39222426. 0.017554844 0.073919490 -34.745056 42.353261 6753.2686 40907854. -0.0036896489 0.073846434 -34.807814 42.269586 6755.0456 45475110. 0.012804669 0.074585346 -34.868317 42.185908 6756.8227 45895292. 0.040547572 0.076283740 -34.927588 42.102231