# # 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 = 52.352285 km # Date (UTC) = 2014-11-18T09:19:44.917 # Date (julian) = 2456979.88871432 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.0639 1.1356382e+11 0.030875659 0.029588555 -8.1579935 64.206387 6493.6596 9.5337908e+10 0.040235238 0.030371286 -8.4606543 64.084159 6496.2553 8.2409208e+10 0.048968601 0.031154016 -8.7633155 63.961931 6498.8511 7.2760162e+10 0.057106046 0.031936747 -9.0659769 63.839703 6501.4468 6.5125780e+10 0.064658557 0.032719478 -9.3632793 63.717474 6504.0425 5.8929540e+10 0.071704914 0.033502209 -9.6589410 63.595244 6506.6382 5.3627697e+10 0.078404966 0.034284939 -9.9499618 63.473016 6509.2339 4.8840747e+10 0.085080200 0.035067670 -10.238162 63.350788 6511.8296 4.4466367e+10 0.092104686 0.035850401 -10.523362 63.228560 6514.4253 4.0558834e+10 0.099867334 0.036633131 -10.804100 63.106332 6517.0211 3.6834137e+10 0.10869266 0.037415862 -11.083479 62.983824 6519.6168 3.3483462e+10 0.11897167 0.038198593 -11.362860 62.855774 6522.2125 3.0467604e+10 0.13042857 0.038972891 -11.638396 62.727724 6524.8082 2.7785868e+10 0.13771708 0.039714075 -11.906134 62.599675 6527.4039 2.5367060e+10 0.14468514 0.041009712 -12.173873 62.471626 6529.9996 2.3031491e+10 0.15250605 0.043828093 -12.441612 62.343579 6532.5953 2.0813068e+10 0.15970853 0.047181532 -12.704147 62.215529 6535.1910 1.8788511e+10 0.16582255 0.048141420 -12.966065 62.087480 6537.7868 1.6978130e+10 0.16996499 0.049056150 -13.227983 61.959430 6540.3825 1.5382786e+10 0.17179869 0.051034795 -13.484572 61.831381 6542.9782 1.3966509e+10 0.17016558 0.051373614 -13.734850 61.703331 6545.5739 1.2800448e+10 0.16747128 0.052460709 -13.961983 61.587124 6548.1696 1.1847893e+10 0.16538831 0.053718300 -14.180970 61.475085 6550.7653 1.1006772e+10 0.16323751 0.055176993 -14.424243 61.346104 6553.3610 1.0190286e+10 0.16147310 0.055153573 -14.673845 61.212234 6555.9568 9.3858654e+09 0.15898022 0.054049455 -14.912481 61.078366 6558.5525 8.6187043e+09 0.15697710 0.052768526 -15.151117 60.946475 6561.1482 7.9060216e+09 0.15416980 0.051299656 -15.389754 60.818425 6563.7439 7.2477499e+09 0.15170268 0.049067840 -15.624771 60.686757 6566.3396 6.6454268e+09 0.14977527 0.046990763 -15.857588 60.552888 6568.9353 6.0891911e+09 0.14827794 0.044911869 -16.090404 60.419019 6571.5310 5.5982648e+09 0.14731832 0.044358236 -16.316872 60.288257 6574.1268 5.1948625e+09 0.14528508 0.042794122 -16.515488 60.171124 6576.7225 4.8611443e+09 0.14323966 0.040539809 -16.719114 60.050274 6579.3182 4.5686684e+09 0.14034008 0.036895575 -16.940289 59.916403 6581.9139 4.2668295e+09 0.13798654 0.035319866 -17.161465 59.782533 6584.5096 3.9547225e+09 0.13560774 0.034237903 -17.382641 59.648664 6587.1053 3.6503285e+09 0.13331167 0.033181707 -17.599242 59.510221 6589.7010 3.3840335e+09 0.13069976 0.031655166 -17.812427 59.372061 6592.2968 3.1684420e+09 0.12716208 0.027785282 -17.995765 59.254929 6594.8925 2.9875757e+09 0.12359735 0.025682598 -18.181834 59.136052 6597.4882 2.8288407e+09 0.12009673 0.025568674 -18.391369 59.002181 6600.0839 2.6542126e+09 0.11892337 0.025162363 -18.600903 58.866063 6602.6796 2.4821696e+09 0.11840705 0.026936676 -18.810437 58.726375 6605.2753 2.3334295e+09 0.11788618 0.026896024 -18.999070 58.598351 6607.8710 2.2098114e+09 0.11610839 0.023987010 -19.177316 58.476124 6610.4668 2.1036857e+09 0.11272926 0.024448956 -19.369403 58.345696 6613.0625 1.9912285e+09 0.11122883 0.023596512 -19.567298 58.211827 6615.6582 1.8703518e+09 0.10982257 0.023271782 -19.765191 58.072218 6618.2539 1.7478021e+09 0.10918648 0.023962522 -19.961523 57.932529 6620.8496 1.6372496e+09 0.10844725 0.025040985 -20.153596 57.792839 6623.4453 1.5422089e+09 0.10669047 0.024656813 -20.329657 57.662757 6626.0410 1.4618998e+09 0.10510574 0.026538611 -20.492625 57.540532 6628.6368 1.3922911e+09 0.10299478 0.025961625 -20.672665 57.408062 6631.2325 1.3259291e+09 0.10080945 0.025954380 -20.864739 57.268372 6633.8282 1.2567432e+09 0.098866099 0.026296846 -21.046702 57.128681 6636.4239 1.1841175e+09 0.096904987 0.026385135 -21.228011 56.988991 6639.0196 1.1184652e+09 0.095262510 0.025621064 -21.414263 56.849303 6641.6153 1.0585097e+09 0.095504152 0.025150390 -21.586047 56.717163 6644.2110 1.0045309e+09 0.093948278 0.025366415 -21.738830 56.594935 6646.8068 9.5186404e+08 0.092199959 0.026337751 -21.904572 56.464524 6649.4025 8.9437013e+08 0.090463102 0.027078902 -22.085004 56.324836 6651.9982 8.4899660e+08 0.089399489 0.027249130 -22.261068 56.185146 6654.5939 8.0446289e+08 0.088068986 0.027783219 -22.434805 56.046023 6657.1896 7.5568061e+08 0.085889132 0.029121056 -22.582493 55.923799 6659.7853 7.1469717e+08 0.084373142 0.031670778 -22.731638 55.799968 6662.3810 6.7524496e+08 0.082884243 0.032830485 -22.900431 55.654458 6664.9768 6.5082476e+08 0.082024569 0.028632183 -23.067181 55.510989 6667.5725 6.3439177e+08 0.081291899 0.027313735 -23.230153 55.371298 6670.1682 6.0011977e+08 0.080591507 0.027250716 -23.396807 55.231609 6672.7639 5.5700726e+08 0.080360701 0.027322368 -23.565597 55.091921 6675.3596 5.1724889e+08 0.078530798 0.030487145 -23.705771 54.963547 6677.9553 4.8324021e+08 0.076853852 0.031000123 -23.843275 54.836229 6680.5510 4.6403377e+08 0.077054367 0.029560409 -24.005000 54.697143 6683.1468 4.4452032e+08 0.077619664 0.031403650 -24.166615 54.556097 6685.7425 4.1814513e+08 0.077075891 0.033489067 -24.323766 54.410587 6688.3382 3.9582908e+08 0.074027618 0.033863254 -24.477920 54.268073 6690.9339 3.7097172e+08 0.072142805 0.033008838 -24.629252 54.128382 6693.5296 3.5318187e+08 0.070824882 0.031422400 -24.765507 53.998549 6696.1253 3.4494071e+08 0.070057513 0.029727855 -24.897919 53.871231 6698.7210 3.3385532e+08 0.068458528 0.031207525 -25.046094 53.733605 6701.3168 3.2746891e+08 0.065950970 0.031874212 -25.197424 53.593247 6703.9125 2.9874319e+08 0.065821277 0.035958517 -25.348755 53.447737 6706.5082 2.7338229e+08 0.065616643 0.039330853 -25.497774 53.302227 6709.1039 2.5439064e+08 0.064761405 0.041066461 -25.643284 53.156717 6711.6996 2.3785842e+08 0.062446978 0.041488196 -25.788795 53.015157 6714.2953 2.3863824e+08 0.059737191 0.047325611 -25.934306 52.875466 6716.8910 2.2811797e+08 0.057516393 0.049713776 -26.074223 52.730184 6719.4868 2.1781630e+08 0.055350773 0.050907390 -26.209673 52.589090 6722.0825 2.0863701e+08 0.055508044 0.050503255 -26.331898 52.461772 6724.6782 2.0082765e+08 0.051630625 0.044263427 -26.458999 52.329375 6727.2739 1.9916763e+08 0.049015918 0.040595482 -26.598689 52.183865 6729.8696 1.9294053e+08 0.047859114 0.040465812 -26.735112 52.038355 6732.4653 1.7985764e+08 0.045985071 0.043825873 -26.868981 51.892845 6735.0610 1.6912957e+08 0.045845515 0.049358227 -27.002852 51.752242 6737.6568 1.6333340e+08 0.047518811 0.056227659 -27.136722 51.611825 6740.2525 1.5811080e+08 0.047123546 0.064481653 -27.270591 51.466316 6742.8482 1.5392105e+08 0.043295821 0.070677498 -27.404460 51.320806 6745.4439 1.4608127e+08 0.039441421 0.078753495 -27.538329 51.175296 6748.0396 1.3753449e+08 0.034916131 0.067225271 -27.668189 51.029786 6750.6353 1.2912684e+08 0.031782459 0.073088967 -27.796237 50.884276 6753.2310 1.1842547e+08 0.028438549 0.073724960 -27.924287 50.738766 6755.8267 1.1096489e+08 0.025434448 0.074242869 -28.052336 50.593256 6758.4225 1.0540431e+08 0.024382515 0.074598676 -28.180385 50.447745 6761.0182 99639976. 0.024537534 0.077969727 -28.305324 50.302235 6763.6139 96171486. 0.030099977 0.078307383 -28.427553 50.156725 6766.2096 92173941. 0.031738326 0.080187878 -28.549781 50.011215 6768.8053 89718548. 0.026842478 0.083753754 -28.672009 49.865705 6771.4010 83294823. 0.021634891 0.090277823 -28.794238 49.720195 6773.9967 77022861. 0.016577039 0.096573570 -28.914253 49.574685 6776.5925 72185737. 0.011608345 0.10286932 -29.030661 49.429175 6779.1882 67130045. 0.0065950904 0.10916507 -29.164412 49.267606 6781.7839 65071602. 0.0018266316 0.11546081 -29.302054 49.102435 6784.3796 58238115. -0.0034619898 0.12175656 -29.418462 48.956924 6786.9753 52670808. -0.0087590262 0.12805231 -29.534870 48.811413 6789.5710 51367857. -0.013565819 0.13434806 -29.651278 48.665904 6792.1667 48451236. -0.018728515 0.14064381 -29.763302 48.520394 6794.7625 48546112. -0.023531397 0.14693955 -29.874095 48.374884 6797.3582 49436994. -0.028411140 0.15323530 -29.990502 48.229374 6799.9539 47968913. -0.034108748 0.15953105 -30.110901 48.076184 6802.5496 47917372. -0.040166437 0.16582680 -30.239898 47.906451 6805.1453 46632040. -0.047831815 0.17212255 -30.353355 47.757166 6807.7410 46075004. -0.059186854 0.17841829 -30.463210 47.611655 6810.3367 48567545. -0.099998428 0.18471404 -30.567976 47.466145 6812.9325 51820450. -0.069862954 0.19100979 -30.682639 47.310739 6815.5282 49131422. -0.011165815 0.19730554 -30.811662 47.140972