# # 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 = 45.546373 km # Date (UTC) = 2016-12-01T09:34:52.831 # Date (julian) = 2457723.89922258 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.4344 6.0374132e+10 0.097679006 0.035128135 112.99933 25.584890 6511.4735 5.3611296e+10 0.10767456 0.035743024 113.04653 25.474773 6513.5127 4.8034862e+10 0.11787760 0.036357914 113.08920 25.375201 6515.5518 4.3256976e+10 0.12827571 0.036972804 113.13188 25.275630 6517.5909 3.9054557e+10 0.13883623 0.037587693 113.17637 25.171815 6519.6300 3.5301807e+10 0.14953900 0.038202583 113.22437 25.059796 6521.6691 3.1897500e+10 0.16036897 0.038817472 113.27238 24.947776 6523.7082 2.8801131e+10 0.16637188 0.039354645 113.31291 24.846229 6525.7473 2.5990087e+10 0.17082668 0.039696922 113.35203 24.746658 6527.7865 2.3461063e+10 0.17548461 0.041287448 113.39140 24.646722 6529.8256 2.1215756e+10 0.17891605 0.043550845 113.43941 24.534702 6531.8647 1.9214725e+10 0.18119988 0.046487238 113.48742 24.422683 6533.9038 1.7427447e+10 0.18186715 0.047903675 113.53261 24.317250 6535.9429 1.5870039e+10 0.18095927 0.047815265 113.57529 24.217665 6537.9820 1.4538822e+10 0.18157993 0.049148208 113.61796 24.118080 6540.0211 1.3364483e+10 0.18092779 0.050864091 113.66160 24.009567 6542.0603 1.2264609e+10 0.17787932 0.051025116 113.70560 23.897546 6544.0994 1.1251868e+10 0.17483985 0.051724961 113.74932 23.789023 6546.1385 1.0347173e+10 0.17173919 0.052578480 113.79200 23.693008 6548.1776 9.5548855e+09 0.16943845 0.053720684 113.83467 23.596994 6550.2167 8.8480186e+09 0.16711672 0.055039624 113.87789 23.494474 6552.2558 8.2022651e+09 0.16474547 0.055522374 113.92189 23.382454 6554.2949 7.6119169e+09 0.16199617 0.054838570 113.96590 23.270433 6556.3341 7.0727442e+09 0.15939720 0.053964012 114.00548 23.169702 6558.3732 6.5727623e+09 0.15691977 0.052921312 114.04459 23.070131 6560.4123 6.1217168e+09 0.15403735 0.051902576 114.08417 22.969379 6562.4514 5.7040433e+09 0.15112630 0.050450374 114.12818 22.857360 6564.4905 5.3084323e+09 0.14813579 0.048549293 114.17219 22.745340 6566.5296 4.9391005e+09 0.14560811 0.046883271 114.21329 22.642839 6568.5688 4.6100845e+09 0.14336026 0.045248846 114.25241 22.546811 6570.6079 4.3156959e+09 0.14141846 0.044665711 114.29154 22.450783 6572.6470 4.0408346e+09 0.13923038 0.043859647 114.33762 22.342224 6574.6861 3.7843074e+09 0.13657832 0.042525476 114.38563 22.230204 6576.7252 3.5447733e+09 0.13375165 0.040536663 114.43111 22.122730 6578.7643 3.3259010e+09 0.13045059 0.037442658 114.47023 22.026714 6580.8034 3.1297213e+09 0.12748315 0.035778260 114.50934 21.930699 6582.8426 2.9505723e+09 0.12492220 0.035064512 114.54888 21.827130 6584.8817 2.7852621e+09 0.12212798 0.034035233 114.58889 21.715111 6586.9208 2.6213394e+09 0.11925631 0.033159393 114.62889 21.603091 6588.9599 2.4731910e+09 0.11641260 0.033059370 114.66804 21.506634 6590.9990 2.3359185e+09 0.11320770 0.029203748 114.70715 21.410619 6593.0381 2.2102345e+09 0.11060843 0.027066775 114.74706 21.312034 6595.0772 2.0920024e+09 0.10789525 0.025631581 114.79107 21.199997 6597.1164 1.9708948e+09 0.10533570 0.025686010 114.83509 21.087960 6599.1555 1.8624352e+09 0.10368740 0.024939081 114.87586 20.986517 6601.1946 1.7562233e+09 0.10375971 0.027137328 114.91498 20.890502 6603.2337 1.6621654e+09 0.10278412 0.026524924 114.95410 20.794487 6605.2728 1.5754398e+09 0.10222214 0.026893913 114.99397 20.684882 6607.3119 1.4921401e+09 0.10084396 0.025091052 115.03398 20.572862 6609.3510 1.4132874e+09 0.098024168 0.023810208 115.07367 20.466436 6611.3902 1.3395427e+09 0.095474525 0.024709650 115.11279 20.370421 6613.4293 1.2762295e+09 0.094556262 0.023731092 115.15191 20.274405 6615.4684 1.2139490e+09 0.093257754 0.023265943 115.19150 20.169787 6617.5075 1.1536002e+09 0.092311809 0.023607510 115.23151 20.057768 6619.5466 1.0966774e+09 0.091643212 0.024657804 115.27148 19.946356 6621.5857 1.0448391e+09 0.090601165 0.024895303 115.31060 19.850328 6623.6248 9.9659398e+08 0.088860977 0.024723322 115.34973 19.754299 6625.6640 9.5172878e+08 0.087648536 0.026189910 115.38905 19.655557 6627.7031 9.1204947e+08 0.085747627 0.025588398 115.42906 19.547538 6629.7422 8.6881758e+08 0.084447432 0.025974914 115.46907 19.439519 6631.7813 8.2173345e+08 0.082685807 0.026010131 115.51198 19.331500 6633.8204 7.7266561e+08 0.081266249 0.026295490 115.55599 19.223481 6635.8595 7.3170499e+08 0.079829817 0.026528688 115.59807 19.117381 6637.8987 6.9462757e+08 0.078882574 0.025721280 115.63364 19.017809 6639.9378 6.6002872e+08 0.078816020 0.025292896 115.66920 18.918238 6641.9769 6.2925948e+08 0.079149110 0.025151618 115.70661 18.815160 6644.0160 6.0017397e+08 0.078416156 0.025345335 115.74662 18.707141 6646.0551 5.7293878e+08 0.077785511 0.025948673 115.78662 18.599121 6648.0942 5.4351400e+08 0.077165619 0.027027358 115.82663 18.491102 6650.1333 5.1748128e+08 0.076746739 0.026285762 115.86664 18.383083 6652.1725 4.9258094e+08 0.076459654 0.027297970 115.90479 18.280052 6654.2116 4.7172940e+08 0.075907614 0.027946096 115.94036 18.184024 6656.2507 4.4931448e+08 0.074385549 0.028243440 115.97593 18.087996 6658.2898 4.2623439e+08 0.073221492 0.030575040 116.01417 17.984722 6660.3289 4.0714449e+08 0.072065058 0.031924963 116.05418 17.876704 6662.3680 3.8659624e+08 0.070916298 0.032837787 116.09419 17.768685 6664.4071 3.6675932e+08 0.070055944 0.030716375 116.13420 17.660665 6666.4463 3.4699790e+08 0.070138903 0.026995554 116.17421 17.552646 6668.4854 3.3302473e+08 0.069293119 0.027900293 116.21152 17.451891 6670.5245 3.1768261e+08 0.069191696 0.027085647 116.24708 17.355876 6672.5636 3.0348861e+08 0.068979958 0.027206272 116.28265 17.259860 6674.6027 2.9177121e+08 0.067874101 0.029463221 116.32173 17.154324 6676.6418 2.7732176e+08 0.065831350 0.032127379 116.36174 17.046305 6678.6809 2.6391220e+08 0.065189854 0.030481169 116.40174 16.938286 6680.7201 2.4992201e+08 0.066085254 0.029596907 116.44175 16.830268 6682.7592 2.3918849e+08 0.066832444 0.031004581 116.48176 16.722249 6684.7983 2.2828952e+08 0.066936596 0.032694602 116.52176 16.614230 6686.8374 2.1889133e+08 0.065731266 0.034248299 116.56177 16.506210 6688.8765 2.1082618e+08 0.063289209 0.033987520 116.59942 16.401722 6690.9156 2.0145689e+08 0.062605945 0.033010931 116.63143 16.305693 6692.9547 1.9356203e+08 0.062072549 0.031656638 116.66344 16.209665 6694.9939 1.8516237e+08 0.061744687 0.029868077 116.69932 16.109779 6697.0330 1.7707801e+08 0.061454655 0.030095438 116.73932 16.005761 6699.0721 1.6915866e+08 0.060438388 0.031523912 116.77933 15.901743 6701.1112 1.6197492e+08 0.058933847 0.031572617 116.81933 15.793791 6703.1503 1.5275756e+08 0.058993631 0.034051385 116.85934 15.685772 6705.1894 1.4609008e+08 0.059304432 0.037005384 116.89741 15.577753 6707.2286 1.3995202e+08 0.059116381 0.040154087 116.93342 15.469734 6709.2677 1.3616821e+08 0.058554052 0.040962295 116.96943 15.361715 6711.3068 1.3206689e+08 0.056935320 0.041041264 117.00937 15.253696 6713.3459 1.2805455e+08 0.055115386 0.044937650 117.04938 15.145676 6715.3850 1.2344415e+08 0.053440128 0.047772365 117.08745 15.039596 6717.4241 1.1566534e+08 0.051641105 0.049848034 117.12346 14.935577 6719.4632 1.0844407e+08 0.050046551 0.050929728 117.15946 14.831559 6721.5024 1.0107396e+08 0.050485704 0.050455260 117.19941 14.723600 6723.5415 94593428. 0.049117797 0.049670930 117.23942 14.615582 6725.5806 89985830. 0.045264007 0.041213358 117.27748 14.509505 6727.6197 87455723. 0.044292422 0.040134772 117.31349 14.405487 6729.6588 84196096. 0.043488427 0.040606312 117.34949 14.301468 6731.6979 80329465. 0.041945169 0.043139028 117.38550 14.193505 6733.7370 76033243. 0.041044726 0.047925921 117.42151 14.085485 6735.7762 73102558. 0.042415918 0.050117379 117.45946 13.977458 6737.8153 68496626. 0.043824511 0.056732631 117.49947 13.869423 6739.8544 63579631. 0.043909309 0.063872157 117.53949 13.761388 6741.8935 61184843. 0.042032295 0.068307007 117.57554 13.657318 6743.9326 59371839. 0.037576444 0.077338835 117.61155 13.553300 6745.9717 55896428. 0.036576420 0.078975393 117.64755 13.447331 6748.0108 52796099. 0.032552666 0.067073953 117.68356 13.339312 6750.0500 50180047. 0.029959311 0.072089439 117.71957 13.231293 6752.0891 47594811. 0.027297653 0.074031401 117.75558 13.127227 6754.1282 43725018. 0.026267766 0.076007328 117.79158 13.023209 6756.1673 41484194. 0.023885723 0.074597405 117.82759 12.919191 6758.2064 43569642. 0.023617084 0.074141821 117.86359 12.815172 6760.2455 45222976. 0.024160657 0.076529491 117.89960 12.711153 6762.2846 48635490. 0.028173945 0.077591685 117.93561 12.603178 6764.3238 52204478. 0.030795921 0.079498796 117.97161 12.495159 6766.3629 52438574. 0.031176476 0.080534581 118.01014 12.381825 6768.4020 50260321. 0.023167553 0.082302486 118.05129 12.262944 6770.4411 47459643. 0.022417304 0.087949577 118.09089 12.148557 6772.4802 44651929. 0.024394766 0.092895327 118.12689 12.044539 6774.5193 41070843. 0.025291026 0.097841076 118.16290 11.940520