# # 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 = 45.104060 km # Date (UTC) = 2014-01-11T09:08:35.672 # Date (julian) = 2456668.88096843 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.8761 8.4560829e+10 0.025294289 0.029230369 -16.519895 50.701580 6491.8080 7.4568020e+10 0.031123343 0.029812947 -16.622238 50.606818 6493.7400 6.6295633e+10 0.036622238 0.030395525 -16.724581 50.512056 6495.6720 6.0409448e+10 0.041682150 0.030978103 -16.824816 50.417294 6497.6039 5.6110158e+10 0.046342999 0.031560681 -16.923368 50.322532 6499.5359 5.2859488e+10 0.050650459 0.032143259 -17.021921 50.227771 6501.4679 4.9229920e+10 0.054700048 0.032725836 -17.133400 50.116602 6503.3998 4.5550278e+10 0.058583708 0.033308414 -17.246033 50.003967 6505.3318 4.2152849e+10 0.062510567 0.033890992 -17.350082 49.902228 6507.2637 3.9417924e+10 0.066971790 0.034473570 -17.448634 49.807466 6509.1957 3.7226127e+10 0.072297736 0.035056148 -17.547186 49.712704 6511.1277 3.5236973e+10 0.078772599 0.035638726 -17.642056 49.614261 6513.0596 3.3308251e+10 0.086622035 0.036221304 -17.736817 49.515709 6514.9916 3.1491787e+10 0.096008111 0.036803882 -17.831579 49.418421 6516.9235 2.9841595e+10 0.10712672 0.037386460 -17.926341 49.323659 6518.8555 2.8299848e+10 0.11986152 0.037969038 -18.021103 49.228897 6520.7875 2.6843758e+10 0.13406359 0.038551616 -18.115875 49.134125 6522.7194 2.5506290e+10 0.14764397 0.039105643 -18.210651 49.039349 6524.6514 2.4177674e+10 0.15795142 0.039658371 -18.305953 48.943550 6526.5834 2.2717062e+10 0.16488913 0.040279669 -18.409923 48.830916 6528.5153 2.1189177e+10 0.16938320 0.041851287 -18.513894 48.718282 6530.4473 1.9658635e+10 0.17180409 0.044454882 -18.608129 48.619032 6532.3792 1.8345011e+10 0.17350066 0.047001009 -18.699101 48.524270 6534.3112 1.7219228e+10 0.17333203 0.048031613 -18.790072 48.429088 6536.2432 1.6187631e+10 0.17201598 0.048008069 -18.881043 48.330537 6538.1751 1.5225956e+10 0.17228106 0.049241959 -18.972014 48.231985 6540.1071 1.4283082e+10 0.17201140 0.050904694 -19.061195 48.133433 6542.0391 1.3410576e+10 0.17003433 0.051017064 -19.148375 48.034879 6543.9710 1.2602771e+10 0.16831962 0.051636740 -19.235556 47.936326 6545.9030 1.1836841e+10 0.16689033 0.052463657 -19.322737 47.840936 6547.8349 1.1111609e+10 0.16638909 0.053604876 -19.409918 47.746174 6549.7669 1.0406983e+10 0.16548931 0.054747812 -19.497098 47.650669 6551.6989 9.7537203e+09 0.16431965 0.055481062 -19.584279 47.552117 6553.6308 9.1719281e+09 0.16289771 0.055017960 -19.671460 47.453566 6555.5628 8.6417853e+09 0.16157043 0.054380490 -19.758641 47.357128 6557.4947 8.2015679e+09 0.16017320 0.053555998 -19.845823 47.262367 6559.4267 7.7783318e+09 0.15798711 0.052339018 -19.933004 47.167605 6561.3587 7.3229562e+09 0.15552421 0.051195936 -20.027657 47.056406 6563.2906 6.8399912e+09 0.15332927 0.049592172 -20.122963 46.943773 6565.2226 6.3571511e+09 0.15125133 0.048065638 -20.210983 46.839748 6567.1546 5.9346310e+09 0.14927883 0.046486506 -20.294373 46.741195 6569.0865 5.5767385e+09 0.14728542 0.044858055 -20.377763 46.642642 6571.0185 5.2639376e+09 0.14605787 0.044498228 -20.461154 46.547779 6572.9504 4.9762674e+09 0.14492720 0.043685862 -20.544545 46.453017 6574.8824 4.7032794e+09 0.14340619 0.042431189 -20.627940 46.356980 6576.8144 4.4375760e+09 0.14162409 0.040434041 -20.711342 46.258414 6578.7463 4.1925525e+09 0.13946198 0.037471076 -20.794745 46.159847 6580.6783 3.9691880e+09 0.13776083 0.035893916 -20.875497 46.061290 6582.6103 3.7775752e+09 0.13629689 0.035127728 -20.955097 45.962737 6584.5422 3.5913705e+09 0.13460839 0.034220147 -21.034697 45.864408 6586.4742 3.4167498e+09 0.13289548 0.033165167 -21.114297 45.769646 6588.4061 3.2412920e+09 0.13151340 0.033244300 -21.193897 45.674884 6590.3381 3.0803895e+09 0.12960530 0.030433150 -21.273497 45.578527 6592.2701 2.9330567e+09 0.12743700 0.027811215 -21.353097 45.479975 6594.2020 2.7929802e+09 0.12518144 0.026061623 -21.432697 45.381424 6596.1340 2.6711369e+09 0.12248650 0.025726665 -21.509330 45.282871 6598.0659 2.5515056e+09 0.12057856 0.025375680 -21.585140 45.184318 6599.9979 2.4443799e+09 0.11956875 0.024989749 -21.660949 45.086312 6601.9299 2.3402068e+09 0.11864058 0.027483606 -21.736759 44.991550 6603.8618 2.2319037e+09 0.11680799 0.026153071 -21.812568 44.896788 6605.7938 2.1306270e+09 0.11600803 0.027330973 -21.890297 44.800108 6607.7258 2.0445029e+09 0.11356447 0.024273900 -21.969896 44.701557 6609.6577 1.9631469e+09 0.11023893 0.023901305 -22.049496 44.603005 6611.5897 1.8950083e+09 0.10738973 0.024582415 -22.122515 44.504453 6613.5216 1.8290229e+09 0.10632557 0.023764982 -22.194535 44.405901 6615.4536 1.7578574e+09 0.10514371 0.023265488 -22.269915 44.304112 6617.3856 1.6782122e+09 0.10434859 0.023567082 -22.356556 44.191478 6619.3175 1.5882942e+09 0.10391772 0.024602528 -22.443198 44.078844 6621.2495 1.5030896e+09 0.10329112 0.025006752 -22.516365 43.982678 6623.1815 1.4308640e+09 0.10201645 0.024559051 -22.588383 43.887916 6625.1134 1.3696275e+09 0.10084731 0.025532940 -22.661479 43.792077 6627.0454 1.3117008e+09 0.098874412 0.025334338 -22.737300 43.693510 6628.9773 1.2576210e+09 0.097878727 0.026099903 -22.813121 43.594944 6630.9093 1.2079297e+09 0.096251436 0.025930543 -22.886488 43.496386 6632.8413 1.1609381e+09 0.094938227 0.026133219 -22.958507 43.397833 6634.7732 1.1143812e+09 0.093449959 0.026383245 -23.030490 43.299316 6636.7052 1.0672859e+09 0.091878295 0.026275901 -23.098726 43.204546 6638.6371 1.0218580e+09 0.090725888 0.025643884 -23.166954 43.109784 6640.5691 9.7660793e+08 0.090881400 0.025201021 -23.236582 43.013624 6642.5011 9.3577866e+08 0.090454079 0.025172201 -23.308601 42.915071 6644.4330 8.9871980e+08 0.089179849 0.025390407 -23.380621 42.816519 6646.3650 8.6142626e+08 0.087880407 0.026109080 -23.449869 42.717966 6648.2970 8.2405796e+08 0.086627390 0.027163067 -23.518098 42.619413 6650.2289 7.8878531e+08 0.085702615 0.026307643 -23.586326 42.520860 6652.1609 7.5476113e+08 0.084862890 0.027294785 -23.654555 42.422309 6654.0928 7.2551383e+08 0.083920373 0.027996675 -23.722784 42.323757 6656.0248 6.9621105e+08 0.082185760 0.028045187 -23.791012 42.226928 6657.9568 6.6780856e+08 0.080957702 0.030010928 -23.859241 42.132167 6659.8887 6.4176326e+08 0.079706943 0.031649209 -23.927469 42.037405 6661.8207 6.1465895e+08 0.078409015 0.032952944 -23.995698 41.939548 6663.7527 5.9327477e+08 0.077208018 0.032274635 -24.063927 41.840994 6665.6846 5.7285304e+08 0.077149236 0.027425369 -24.133893 41.739932 6667.6166 5.5015764e+08 0.076584460 0.027329936 -24.211869 41.627299 6669.5485 5.2144467e+08 0.075805494 0.027792318 -24.289845 41.514667 6671.4805 4.9215509e+08 0.075804124 0.026872196 -24.356046 41.417578 6673.4125 4.6922841e+08 0.075304114 0.028076081 -24.420484 41.322816 6675.3444 4.5220414e+08 0.073599127 0.030458050 -24.484925 41.227173 6677.2764 4.3545809e+08 0.071855157 0.031965310 -24.549372 41.128607 6679.2083 4.1543026e+08 0.071388708 0.030095604 -24.613820 41.030041 6681.1403 3.9727015e+08 0.072285516 0.029765000 -24.678262 40.931482 6683.0723 3.8224670e+08 0.072747548 0.031294492 -24.742700 40.832929 6685.0042 3.6853752e+08 0.072516231 0.032709306 -24.807138 40.734376 6686.9362 3.5414228e+08 0.070939363 0.034305776 -24.871576 40.639446 6688.8682 3.4263872e+08 0.068303800 0.033985590 -24.936015 40.544683 6690.8001 3.2865500e+08 0.067367127 0.033024170 -25.003375 40.444249 6692.7321 3.1535672e+08 0.066555234 0.031915210 -25.077020 40.331616 6694.6640 3.0020829e+08 0.065905454 0.030330339 -25.150568 40.219132 6696.5960 2.8496637e+08 0.065646523 0.029923412 -25.215020 40.120557 6698.5280 2.7222573e+08 0.064812065 0.030942508 -25.279458 40.022004 6700.4599 2.6145207e+08 0.063467084 0.031008858 -25.342490 39.924857 6702.3919 2.5119947e+08 0.062655805 0.033189654 -25.403138 39.830096 6704.3238 2.3909647e+08 0.063158289 0.036336580 -25.463785 39.735334 6706.2558 2.2939041e+08 0.063263145 0.038891624 -25.524433 39.637795 6708.1878 2.2241171e+08 0.063060469 0.040248056 -25.585080 39.539244 6710.1197 2.1915890e+08 0.061981988 0.040519931 -25.646546 39.439362 6712.0517 2.1303824e+08 0.060099584 0.041925943 -25.715860 39.326727 6713.9837 2.0061901e+08 0.058316845 0.047244306 -25.785173 39.214092 6715.9156 1.8761229e+08 0.056982308 0.048315059 -25.847674 39.115507 6717.8476 1.7778010e+08 0.055173854 0.049821841 -25.908321 39.020745 6719.7795 1.7071019e+08 0.053843379 0.050629215 -25.968969 38.925423 6721.7115 1.6644258e+08 0.053874190 0.050518279 -26.029617 38.826871 6723.6435 1.6128826e+08 0.052123963 0.049727817 -26.090265 38.728320 6725.5754 1.5678374e+08 0.048068771 0.041216576 -26.153122 38.622590 6727.5074 1.4887085e+08 0.046808839 0.040284395 -26.218103 38.509955 6729.4394 1.4221828e+08 0.045844315 0.040752587 -26.282211 38.400919 6731.3713 1.3306791e+08 0.043959986 0.042489012 -26.342859 38.306157 6733.3033 1.2941868e+08 0.042553082 0.045570889 -26.403507 38.211395 6735.2352 1.2670142e+08 0.042589410 0.049543156 -26.462019 38.114498 6737.1672 1.2042601e+08 0.043597218 0.054668189 -26.518876 38.015947 6739.0992 1.1616226e+08 0.043709886 0.062947908 -26.575733 37.917395 6741.0311 1.1039763e+08 0.042181901 0.065847461 -26.640104 37.809826 6742.9631 1.0656119e+08 0.038556763 0.070957494 -26.705085 37.701524 6744.8950 99924851. 0.034918530 0.078485709 -26.765062 37.599225 6746.8270 93434646. 0.030455948 0.069372355 -26.821927 37.500659 6748.7590 87758351. 0.029358072 0.071009880 -26.878793 37.402093 6750.6909 85051404. 0.026065610 0.073183929 -26.943602 37.289757 6752.6229 82911069. 0.022779574 0.073413669 -27.008584 37.177122 6754.5549 79033363. 0.020497917 0.075321190 -27.068118 37.076470 6756.4868 73922570. 0.016496897 0.075419569 -27.124975 36.981708 6758.4188 72330214. 0.013267019 0.074590892 -27.181954 36.886370 6760.3507 67893530. -0.0079936870 0.076730123 -27.242603 36.773737 6762.2827 61123598. 0.013333195 0.077594817 -27.303252 36.661103 6764.2147 54736116. 0.061171053 0.079493570 -27.361156 36.561407