# # 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 = 63.327053 km # Date (UTC) = 2014-11-20T09:41:03.398 # Date (julian) = 2456981.90351156 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.0255 1.3392948e+11 0.034603433 0.030481606 110.00653 29.957546 6496.6436 1.0743558e+11 0.044222487 0.031271081 110.06818 29.808563 6499.2616 8.9108036e+10 0.053272085 0.032060555 110.13694 29.642393 6501.8797 7.4839000e+10 0.061823537 0.032850030 110.20738 29.472146 6504.4978 6.3318386e+10 0.069934558 0.033639505 110.27783 29.301901 6507.1159 5.3964631e+10 0.077776979 0.034428979 110.34828 29.131667 6509.7339 4.6728393e+10 0.085611240 0.035218454 110.41871 28.961449 6512.3520 4.1237708e+10 0.093768590 0.036007929 110.48302 28.809631 6514.9701 3.6881712e+10 0.10260742 0.036797403 110.54466 28.665784 6517.5882 3.3260349e+10 0.11235008 0.037586878 110.60851 28.502105 6520.2063 3.0080760e+10 0.12318793 0.038376353 110.67295 28.332877 6522.8243 2.7298031e+10 0.13309416 0.039133113 110.73459 28.183915 6525.4424 2.4959970e+10 0.13909129 0.039731723 110.79652 28.032803 6528.0605 2.2784407e+10 0.14497555 0.041490473 110.86110 27.862558 6530.6786 2.0520893e+10 0.15011725 0.044778685 110.92568 27.692312 6533.2967 1.8390211e+10 0.15584981 0.047645655 110.99025 27.522065 6535.9147 1.6616437e+10 0.15909072 0.047827491 111.05279 27.366594 6538.5328 1.5192714e+10 0.16430672 0.049416130 111.11443 27.217632 6541.1509 1.3926882e+10 0.16690120 0.051277597 111.17826 27.057151 6543.7690 1.2761444e+10 0.16735694 0.051583712 111.24248 26.893452 6546.3870 1.1738297e+10 0.16628572 0.052783001 111.29898 26.744491 6549.0051 1.0802274e+10 0.16417641 0.053971500 111.35627 26.593461 6551.6232 9.9701665e+09 0.16267496 0.055454504 111.42085 26.423214 6554.2413 9.2018152e+09 0.16046674 0.054837443 111.48022 26.263371 6556.8594 8.5159114e+09 0.15856123 0.053886784 111.53159 26.119546 6559.4774 7.8996227e+09 0.15606731 0.052333292 111.58886 25.963913 6562.0955 7.3143395e+09 0.15363296 0.050789017 111.65343 25.793667 6564.7136 6.7567339e+09 0.15130841 0.048448197 111.71201 25.639245 6567.3317 6.2678066e+09 0.14968308 0.046336750 111.76851 25.490282 6569.9498 5.8409402e+09 0.14862192 0.044914239 111.83145 25.329041 6572.5678 5.4351111e+09 0.14727378 0.043904974 111.89479 25.166104 6575.1859 5.0666004e+09 0.14562129 0.042188183 111.94616 25.017141 6577.8040 4.7662951e+09 0.14345968 0.038957504 111.99827 24.868931 6580.4221 4.5286616e+09 0.14100040 0.036130704 112.05478 24.725106 6583.0401 4.3013957e+09 0.13897311 0.035001347 112.11172 24.576006 6585.6582 4.0559072e+09 0.13673802 0.033444539 112.17043 24.405759 6588.2763 3.8125540e+09 0.13494357 0.033287659 112.22549 24.248625 6590.8944 3.5915890e+09 0.13204167 0.029398380 112.27686 24.104800 6593.5125 3.3883252e+09 0.12921187 0.026625790 112.33549 23.946457 6596.1305 3.1946669e+09 0.12551372 0.025726680 112.40006 23.776211 6598.7486 3.0197275e+09 0.12272089 0.025049750 112.45346 23.628317 6601.3667 2.8570687e+09 0.12215782 0.027218382 112.50483 23.484491 6603.9848 2.7012817e+09 0.12065461 0.026080291 112.56279 23.322187 6606.6029 2.5543505e+09 0.12044133 0.026420658 112.62006 23.160831 6609.2209 2.4089998e+09 0.11767078 0.023771558 112.67142 23.011868 6611.8390 2.2930373e+09 0.11519883 0.024423416 112.72279 22.864179 6614.4571 2.2031581e+09 0.11436107 0.023625577 112.77417 22.720333 6617.0752 2.0928683e+09 0.11323797 0.023464170 112.82776 22.570277 6619.6932 1.9857982e+09 0.11290647 0.024693183 112.88647 22.405901 6622.3113 1.8843420e+09 0.11183352 0.024675129 112.94078 22.253836 6624.9294 1.7955798e+09 0.11026510 0.025359814 112.99214 22.110010 6627.5475 1.7111662e+09 0.10825473 0.025528294 113.04446 21.948951 6630.1656 1.6203796e+09 0.10690613 0.025928710 113.09730 21.778706 6632.7836 1.5339689e+09 0.10512931 0.026126310 113.14874 21.633530 6635.4017 1.4560228e+09 0.10334869 0.026460031 113.20010 21.489704 6638.0198 1.4026513e+09 0.10168204 0.025670780 113.25147 21.345878 6640.6379 1.3467746e+09 0.10139899 0.025192607 113.30292 21.200917 6643.2560 1.2858825e+09 0.10064147 0.025231264 113.35576 21.036542 6645.8740 1.2205592e+09 0.099047134 0.025861135 113.40807 20.879396 6648.4921 1.1580019e+09 0.097387995 0.027293704 113.45944 20.735571 6651.1102 1.1051982e+09 0.096254655 0.026568609 113.51140 20.583422 6653.7283 1.0538621e+09 0.095081282 0.027897488 113.56424 20.419048 6656.3463 1.0044450e+09 0.092585520 0.028327403 113.61604 20.269091 6658.9644 9.5570490e+08 0.090428483 0.031771504 113.66741 20.125265 6661.5825 9.1425074e+08 0.088801013 0.032831631 113.71489 19.981439 6664.2006 8.7830420e+08 0.087397062 0.031472171 113.76112 19.837612 6666.8187 8.4174475e+08 0.087380812 0.027068121 113.81269 19.677183 6669.4367 8.0217497e+08 0.086354755 0.027907142 113.86537 19.514957 6672.0548 7.6520561e+08 0.086310689 0.026911372 113.91674 19.371132 6674.6729 7.2973117e+08 0.085046976 0.029522423 113.96834 19.224064 6677.2910 6.9529717e+08 0.082681168 0.031944568 114.02117 19.059688 6679.9091 6.6877521e+08 0.082634465 0.029516571 114.07101 18.904650 6682.5271 6.4051706e+08 0.083441246 0.030827291 114.11724 18.760825 6685.1452 6.1467793e+08 0.083247302 0.032858215 114.16682 18.609549 6687.7633 5.8827722e+08 0.080758912 0.033917207 114.21966 18.451043 6690.3814 5.6398841e+08 0.078303025 0.033072159 114.26718 18.304342 6692.9994 5.4314585e+08 0.077043798 0.031604732 114.31341 18.160517 6695.6175 5.2239446e+08 0.076179287 0.029746042 114.36530 17.999074 6698.2356 4.9959802e+08 0.075003096 0.030541209 114.41712 17.837859 6700.8537 4.7381965e+08 0.072702786 0.031300918 114.46335 17.694012 6703.4718 4.5450424e+08 0.072070302 0.034855729 114.51096 17.547130 6706.0898 4.3470728e+08 0.071845953 0.038602762 114.56378 17.388652 6708.7079 4.1650813e+08 0.071001239 0.040814475 114.61329 17.237544 6711.3260 3.9903790e+08 0.068692187 0.041063127 114.65953 17.093697 6713.9441 3.7901081e+08 0.065890661 0.047101139 114.70617 16.938411 6716.5622 3.6236486e+08 0.063587979 0.049229360 114.75313 16.774036 6719.1802 3.5086558e+08 0.060873077 0.051198605 114.79947 16.631591 6721.7983 3.3567596e+08 0.061256167 0.050544434 114.84570 16.492902 6724.4164 3.2090421e+08 0.058163166 0.046449545 114.89792 16.330917 6727.0345 3.0874850e+08 0.054944052 0.040914465 114.94941 16.171771 6729.6525 2.9396428e+08 0.054192815 0.040610489 114.99564 16.033082 6732.2706 2.8640894e+08 0.052181289 0.043790030 115.04206 15.887798 6734.8887 2.7581116e+08 0.051963391 0.049300129 115.08902 15.723421 6737.5068 2.6242789e+08 0.053932269 0.055749932 115.13923 15.562293 6740.1249 2.4913878e+08 0.053977072 0.064263665 115.19207 15.403789 6742.7429 2.3547871e+08 0.050573324 0.070421063 115.23492 15.257761 6745.3610 2.2748332e+08 0.046733355 0.078718655 115.27602 15.113936 6747.9791 2.2136088e+08 0.042375570 0.067024096 115.32772 14.956853 6750.5972 2.1548261e+08 0.039463738 0.073023832 115.37938 14.798348 6753.2153 2.0818337e+08 0.036397565 0.073673890 115.42634 14.639844 6755.8333 1.9867068e+08 0.033696612 0.074239982 115.47039 14.488624 6758.4514 1.9400319e+08 0.032877704 0.074659891 115.51148 14.344797 6761.0695 1.9031042e+08 0.033409319 0.077973966 115.55903 14.192905 6763.6876 1.8266202e+08 0.039099033 0.078531768 115.61187 14.034401 6766.3056 1.7604590e+08 0.040759586 0.080405126 115.65973 13.875896 6768.9237 1.6607717e+08 0.035765912 0.084179807 115.70586 13.720218 6771.5418 1.6073275e+08 0.030787364 0.090619253 115.74695 13.581529 6774.1599 1.5570819e+08 0.025895791 0.096969245 115.79035 13.437811 6776.7780 1.5022918e+08 0.021053676 0.10331924 115.84318 13.273435 6779.3960 1.4327103e+08 0.016271280 0.10966923 115.89313 13.111950 6782.0141 1.3393434e+08 0.011530556 0.11601922 115.94009 12.953444 6784.6322 1.2742054e+08 0.0067505547 0.12236921 115.98705 12.794939 6787.2503 1.2167367e+08 0.0019550193 0.12871920 116.03402 12.636434 6789.8684 1.1920667e+08 -0.0028779650 0.13506920 116.08098 12.477930 6792.4864 1.1784693e+08 -0.0077217298 0.14141919 116.12795 12.319425 6795.1045 1.1421340e+08 -0.012546383 0.14776918 116.17491 12.160920 6797.7226 1.0824359e+08 -0.017359146 0.15411917 116.22188 12.002416 6800.3407 1.0348423e+08 -0.022183985 0.16046916 116.26884 11.843911 6802.9587 97956917. -0.027009391 0.16681915 116.31580 11.685405 6805.5768 94851830. -0.031834925 0.17316915 116.36277 11.526900 6808.1949 91915102. -0.036656968 0.17951914 116.40973 11.368395 6810.8130 87599282. -0.041486348 0.18586913 116.45670 11.209891 6813.4311 84083173. -0.046308207 0.19221912 116.50367 11.051386 6816.0491 82431346. -0.051111561 0.19856911 116.55063 10.892881 6818.6672 80787280. -0.055908079 0.20491910 116.59759 10.734377 6821.2853 79422916. -0.060695674 0.21126910 116.64455 10.575872 6823.9034 74790421. -0.065549144 0.21761909 116.69152 10.420057 6826.5215 70518239. -0.070423213 0.22396908 116.73848 10.267423 6829.1395 67036867. -0.075294920 0.23031907 116.78545 10.110357 6831.7576 63908621. -0.080173319 0.23666906 116.83242 9.9518513 6834.3757 63531190. -0.084954464 0.24301905 116.87938 9.7933463 6836.9938 59188830. -0.089971397 0.24936905 116.92430 9.6348415 6839.6118 56225067. -0.095034497 0.25571904 116.96540 9.4763371 6842.2299 49450010. -0.10064427 0.26206903 117.01531 9.3008248 6844.8480 43248804. -0.10683277 0.26841902 117.06865 9.1218773 6847.4661 43760571. -0.11288370 0.27476901 117.11562 8.9692435 6850.0842 45281699. -0.12098644 0.28111900 117.16258 8.8137862 6852.7022 48272187. -0.14569448 0.28746900 117.20955 8.6552802 6855.3203 49051433. -0.13185520 0.29381899 117.25727 8.4762339 6857.9384 46025143. -0.098587078 0.30016898 117.30491 8.3015561