# # 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 = 34.236157 km # Date (UTC) = 2017-01-14T09:13:39.059 # Date (julian) = 2457767.88447985 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.9363 5.9221878e+10 0.10565069 0.035581031 -17.700620 51.169795 6512.4698 5.3614753e+10 0.11335212 0.036043447 -17.793461 51.083832 6514.0033 4.8353020e+10 0.12110460 0.036505863 -17.877438 51.002561 6515.5368 4.3845572e+10 0.12896150 0.036968279 -17.955663 50.924337 6517.0702 4.0274484e+10 0.13701909 0.037430695 -18.033889 50.846112 6518.6037 3.7081961e+10 0.14517643 0.037893111 -18.112114 50.768738 6520.1372 3.4263194e+10 0.15343178 0.038355527 -18.190339 50.693521 6521.6707 3.2090845e+10 0.16186774 0.038817943 -18.268564 50.618305 6523.2041 2.9865192e+10 0.16690966 0.039229710 -18.346789 50.543089 6524.7376 2.7751014e+10 0.17152851 0.039689005 -18.435732 50.454269 6526.2711 2.5534632e+10 0.17377882 0.039952306 -18.525134 50.364866 6527.8046 2.3375805e+10 0.17740053 0.041300606 -18.613816 50.276183 6529.3381 2.1547286e+10 0.17951683 0.042774279 -18.689033 50.200967 6530.8715 2.0095331e+10 0.18089545 0.045048829 -18.764249 50.125750 6532.4050 1.8809933e+10 0.18338548 0.047022536 -18.839466 50.050534 6533.9385 1.7528949e+10 0.18325099 0.047918416 -18.922495 49.965005 6535.4720 1.6189239e+10 0.18282493 0.048019560 -19.008458 49.875604 6537.0054 1.4798797e+10 0.18250760 0.048687793 -19.094421 49.786203 6538.5389 1.3587254e+10 0.18102505 0.049419107 -19.169122 49.708415 6540.0724 1.2540906e+10 0.18034576 0.050888304 -19.241330 49.633199 6541.6059 1.1673084e+10 0.17770883 0.051130049 -19.313538 49.557982 6543.1394 1.0915155e+10 0.17588386 0.051418467 -19.387240 49.481271 6544.6728 1.0225508e+10 0.17426828 0.052190160 -19.462468 49.403033 6546.2063 9.6351146e+09 0.17177504 0.052634283 -19.537695 49.324796 6547.7398 9.0926230e+09 0.17052682 0.053568690 -19.614176 49.244641 6549.2733 8.5354298e+09 0.16845085 0.054244754 -19.696701 49.155240 6550.8067 7.9476162e+09 0.16669957 0.055187360 -19.779226 49.065839 6552.3402 7.3620789e+09 0.16544085 0.055501135 -19.858238 48.980176 6553.8737 6.8470897e+09 0.16305981 0.054895873 -19.927437 48.904959 6555.4072 6.4132662e+09 0.16129166 0.054511245 -19.996636 48.829743 6556.9406 6.0487482e+09 0.15915771 0.053874833 -20.065835 48.754526 6558.4741 5.6948212e+09 0.15652421 0.052835293 -20.137862 48.676483 6560.0076 5.3605942e+09 0.15427346 0.052267456 -20.210069 48.598259 6561.5411 5.0434563e+09 0.15112695 0.051106049 -20.282277 48.520034 6563.0746 4.7485071e+09 0.14846935 0.049842123 -20.352631 48.441809 6564.6080 4.5009883e+09 0.14567006 0.048496037 -20.421831 48.363583 6566.1415 4.2760221e+09 0.14267524 0.047102832 -20.491031 48.285357 6567.6750 4.0594733e+09 0.14051529 0.046046469 -20.563120 48.203865 6569.2085 3.8262970e+09 0.13783691 0.044865992 -20.642207 48.114463 6570.7419 3.5676583e+09 0.13568226 0.044610172 -20.721293 48.025062 6572.2754 3.3265806e+09 0.13347677 0.044072430 -20.795425 47.941109 6573.8089 3.1151269e+09 0.13076564 0.043008362 -20.861616 47.865893 6575.3424 2.9448205e+09 0.12879643 0.042031200 -20.927806 47.790676 6576.8759 2.7930964e+09 0.12670726 0.040363271 -20.993996 47.715278 6578.4093 2.6508338e+09 0.12444436 0.038003238 -21.060186 47.637053 6579.9428 2.5195523e+09 0.12256605 0.036552196 -21.126376 47.558827 6581.4763 2.3984983e+09 0.12034091 0.035452384 -21.192566 47.480602 6583.0098 2.2780900e+09 0.11868850 0.035016727 -21.265724 47.394144 6584.5432 2.1398616e+09 0.11686516 0.034219590 -21.341372 47.304742 6586.0767 1.9948362e+09 0.11500751 0.033170304 -21.417020 47.215341 6587.6102 1.8640866e+09 0.11377794 0.033293564 -21.484833 47.135198 6589.1437 1.7561173e+09 0.11189685 0.032760952 -21.551023 47.056972 6590.6771 1.6657668e+09 0.10977352 0.029802470 -21.617214 46.978746 6592.2106 1.5859212e+09 0.10772365 0.027868948 -21.681886 46.902039 6593.7441 1.5085327e+09 0.10552364 0.026410434 -21.745068 46.826823 6595.2776 1.4407714e+09 0.10323573 0.025652357 -21.808250 46.751607 6596.8111 1.3816484e+09 0.10077763 0.025723586 -21.873687 46.673824 6598.3445 1.3080466e+09 0.098948725 0.025242674 -21.949335 46.584422 6599.8780 1.2236219e+09 0.098162941 0.024982538 -22.024982 46.495021 6601.4115 1.1458227e+09 0.097447553 0.027239476 -22.097231 46.408667 6602.9450 1.0802919e+09 0.096231225 0.026710240 -22.160412 46.330442 6604.4784 1.0332102e+09 0.094832188 0.026355359 -22.223594 46.252216 6606.0119 9.8774901e+08 0.093985945 0.027482548 -22.286776 46.173990 6607.5454 9.4106566e+08 0.092168579 0.024630045 -22.347103 46.095766 6609.0789 9.0193714e+08 0.089673802 0.023729360 -22.407276 46.017541 6610.6123 8.5986064e+08 0.087684662 0.024588065 -22.467449 45.939316 6612.1458 8.2666243e+08 0.086455332 0.024211795 -22.529509 45.861085 6613.6793 7.9249388e+08 0.085873161 0.023822828 -22.592700 45.782848 6615.2128 7.6510011e+08 0.085006546 0.023258078 -22.655892 45.704612 6616.7463 7.4455306e+08 0.083944880 0.023399424 -22.720768 45.623004 6618.2797 7.0927418e+08 0.083636228 0.023982030 -22.789538 45.533602 6619.8132 6.7361612e+08 0.083263569 0.024722129 -22.858308 45.444199 6621.3467 6.3717343e+08 0.082554155 0.024974535 -22.923693 45.360382 6622.8802 5.9600484e+08 0.081682116 0.024523722 -22.983867 45.285166 6624.4136 5.6770203e+08 0.080487364 0.025083732 -23.044040 45.209949 6625.9471 5.4272629e+08 0.079712958 0.026527805 -23.104003 45.134522 6627.4806 5.2073177e+08 0.078220170 0.025502458 -23.161167 45.056298 6629.0141 5.0634292e+08 0.077309572 0.026106560 -23.218332 44.978074 6630.5476 4.8365793e+08 0.076186294 0.025929651 -23.275496 44.899849 6632.0810 4.6140307e+08 0.075023639 0.026042062 -23.341322 44.813283 6633.6145 4.3936199e+08 0.073999458 0.026259540 -23.410092 44.723880 6635.1480 4.1025808e+08 0.073116283 0.026421980 -23.478862 44.634478 6636.6815 3.8721053e+08 0.071972766 0.026285113 -23.537906 44.554443 6638.2149 3.6761184e+08 0.071247536 0.025662278 -23.595071 44.476219 6639.7484 3.5216173e+08 0.071077465 0.025360574 -23.652236 44.397994 6641.2819 3.3812062e+08 0.071362451 0.025149258 -23.709400 44.319769 6642.8154 3.1384996e+08 0.071248286 0.025185063 -23.766565 44.241543 6644.3488 3.0264986e+08 0.070555291 0.025381309 -23.823730 44.163317 6645.8823 2.9254403e+08 0.069945089 0.025865021 -23.880895 44.085091 6647.4158 2.8441033e+08 0.069320026 0.026656702 -23.938059 44.006867 6648.9493 2.7228823e+08 0.068466685 0.027599735 -23.995223 43.928642 6650.4828 2.5190301e+08 0.068450974 0.026365754 -24.052387 43.850418 6652.0162 2.3839085e+08 0.068142114 0.027254988 -24.116631 43.762505 6653.5497 2.2018286e+08 0.067836729 0.027806325 -24.181963 43.673104 6655.0832 2.0734173e+08 0.066955477 0.027644590 -24.247296 43.583703 6656.6167 1.9804139e+08 0.065539168 0.028564662 -24.301914 43.507899 6658.1501 1.9060105e+08 0.064598419 0.030327361 -24.356070 43.432683 6659.6836 1.8276875e+08 0.063548143 0.031691994 -24.410226 43.357467 6661.2171 1.7554772e+08 0.062488616 0.032645522 -24.464382 43.280340 6662.7506 1.6802207e+08 0.061672007 0.032623155 -24.518538 43.202114 6664.2841 1.6297975e+08 0.060787033 0.031166753 -24.572694 43.123888 6665.8175 1.5563200e+08 0.060877883 0.027207580 -24.630327 43.042185 6667.3510 1.4489449e+08 0.060410771 0.027232388 -24.695659 42.952783 6668.8845 1.3819641e+08 0.059429321 0.028253479 -24.760990 42.863382 6670.4180 1.3006643e+08 0.059539017 0.027134998 -24.820607 42.778484 6671.9514 1.2412399e+08 0.059341378 0.026878907 -24.871754 42.700258 6673.4849 1.1965466e+08 0.058943972 0.028184444 -24.922901 42.622032 6675.0184 1.1623401e+08 0.057902959 0.029833586 -24.974287 42.543806 6676.5519 1.1370203e+08 0.056407329 0.032069401 -25.028451 42.465570 6678.0853 1.1063310e+08 0.056148109 0.030879530 -25.082615 42.387334 6679.6188 1.1212120e+08 0.056457971 0.029756403 -25.136779 42.309098 6681.1523 1.0745884e+08 0.057360923 0.029774202 -25.194179 42.222432 6682.6858 1.0357362e+08 0.058060942 0.030948504 -25.252624 42.133045 6684.2193 98678044. 0.058268382 0.032665218 -25.311069 42.043658 6685.7527 92221864. 0.058088347 0.033499909 -25.365887 41.963717 6687.2862 86276101. 0.056711895 0.034183278 -25.420051 41.885481 6688.8197 77499666. 0.054732622 0.033974402 -25.474216 41.807244 6690.3532 71593841. 0.054172640 0.033075391 -25.530628 41.724959 6691.8866 71221788. 0.053772362 0.032792074 -25.589083 41.638996 6693.4201 71838876. 0.053569910 0.031459962 -25.647538 41.553032 6694.9536 64604582. 0.053335989 0.029924511 -25.701494 41.471834 6696.4871 62676675. 0.053192382 0.029878155 -25.752641 41.393608 6698.0206 58485653. 0.052591044 0.030246026 -25.803788 41.315382 6699.5540 58841937. 0.051508858 0.031079223 -25.856065 41.233894 6701.0875 59148878. 0.050038157 0.031537841 -25.911081 41.144492 6702.6210 53542250. 0.048925900 0.033372588 -25.966098 41.055091 6704.1545 53559083. 0.048186154 0.036253401 -26.019629 40.969979 6705.6879 51569273. 0.046227992 0.037891619 -26.070776 40.891755 6707.2214 49034397. 0.040985604 0.040155109 -26.121923 40.813531 6708.7549 49110073. 0.014558406 0.040865629 -26.173303 40.734635 6710.2884 50719184. 0.035076521 0.040552939 -26.228319 40.645232 6711.8218 53758399. 0.074683099 0.041627268 -26.283336 40.555829