# # 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 = 38.325172 km # Date (UTC) = 2017-01-10T09:21:53.501 # Date (julian) = 2457763.89020255 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.8379 1.1097970e+11 0.073991407 0.033742064 -20.134888 50.236454 6506.4337 9.4003517e+10 0.081361284 0.034223272 -20.216292 50.158181 6508.0295 8.0105418e+10 0.088808152 0.034704480 -20.297697 50.079908 6509.6253 7.0995815e+10 0.096700774 0.035185688 -20.379101 50.000900 6511.2211 6.2813420e+10 0.10466663 0.035666895 -20.460505 49.919496 6512.8169 5.5942374e+10 0.11279819 0.036148103 -20.541909 49.838091 6514.4127 5.0759945e+10 0.12124399 0.036629311 -20.623185 49.756814 6516.0085 4.6513784e+10 0.12992945 0.037110519 -20.701458 49.678541 6517.6043 4.3012399e+10 0.13882787 0.037591727 -20.779732 49.600268 6519.2001 3.9603399e+10 0.14778123 0.038072935 -20.858005 49.521994 6520.7959 3.6526285e+10 0.15682510 0.038554143 -20.936288 49.443712 6522.3916 3.3661549e+10 0.16482789 0.039019808 -21.014572 49.365427 6523.9874 3.1094076e+10 0.16920315 0.039423847 -21.092857 49.287142 6525.5832 2.8732600e+10 0.17340001 0.039715651 -21.171134 49.208865 6527.1790 2.6515756e+10 0.17765118 0.040846449 -21.249407 49.130592 6528.7748 2.4502976e+10 0.17959555 0.042057155 -21.327680 49.052319 6530.3706 2.2651708e+10 0.18222015 0.044347562 -21.405953 48.972608 6531.9664 2.0940599e+10 0.18407159 0.046635312 -21.484226 48.891205 6533.5622 1.9367165e+10 0.18391947 0.047758511 -21.562499 48.809801 6535.1580 1.7938258e+10 0.18364663 0.048155753 -21.639942 48.729228 6536.7538 1.6560092e+10 0.18219955 0.048464950 -21.715083 48.650955 6538.3496 1.5269848e+10 0.18109329 0.049326918 -21.790225 48.572683 6539.9454 1.4070637e+10 0.18040738 0.050788005 -21.865144 48.494186 6541.5412 1.2962330e+10 0.17777865 0.051151025 -21.937155 48.412782 6543.1370 1.1963978e+10 0.17593468 0.051417846 -22.009166 48.331379 6544.7328 1.1033599e+10 0.17430898 0.052238795 -22.081177 48.249975 6546.3286 1.0192654e+10 0.17186008 0.052734892 -22.155936 48.171319 6547.9244 9.4555683e+09 0.17044513 0.053638886 -22.231078 48.093046 6549.5202 8.8139994e+09 0.16854842 0.054496373 -22.306220 48.014773 6551.1160 8.2152974e+09 0.16636403 0.055276456 -22.379222 47.936500 6552.7118 7.6677354e+09 0.16489789 0.055407617 -22.451233 47.858227 6554.3076 7.1627196e+09 0.16244576 0.054838834 -22.523244 47.779953 6555.9034 6.7050437e+09 0.15987971 0.054094335 -22.595255 47.700147 6557.4991 6.2932320e+09 0.15786837 0.053553241 -22.667267 47.618743 6559.0949 5.9177095e+09 0.15473521 0.052376465 -22.739278 47.537338 6560.6907 5.5671433e+09 0.15178564 0.051651521 -22.811290 47.456859 6562.2865 5.2449802e+09 0.14895850 0.050607258 -22.883301 47.378586 6563.8823 4.9414710e+09 0.14539888 0.048907717 -22.955312 47.300313 6565.4781 4.6410976e+09 0.14272571 0.047775482 -23.027006 47.221720 6567.0739 4.3577161e+09 0.14002072 0.046554688 -23.095896 47.140305 6568.6697 4.0729439e+09 0.13722781 0.045156036 -23.164787 47.058889 6570.2655 3.8190851e+09 0.13537887 0.044807526 -23.233677 46.977474 6571.8613 3.5898774e+09 0.13344349 0.044268036 -23.302558 46.898912 6573.4571 3.3786570e+09 0.13140704 0.043290670 -23.371438 46.820639 6575.0529 3.1778738e+09 0.12976989 0.042321637 -23.440318 46.742366 6576.6487 2.9749332e+09 0.12764510 0.040624736 -23.509198 46.661856 6578.2445 2.7816846e+09 0.12556712 0.038263542 -23.578079 46.580452 6579.8403 2.5993635e+09 0.12369052 0.036608557 -23.646960 46.499047 6581.4361 2.4378469e+09 0.12160616 0.035464559 -23.711858 46.423798 6583.0319 2.2997598e+09 0.12004732 0.035005534 -23.773083 46.354223 6584.6277 2.1925859e+09 0.11810919 0.034173596 -23.834309 46.284648 6586.2235 2.1002093e+09 0.11599012 0.033168407 -23.895534 46.215073 6587.8193 2.0077815e+09 0.11449819 0.033339886 -23.960954 46.134532 6589.4151 1.9086869e+09 0.11246797 0.032222547 -24.026704 46.053129 6591.0109 1.8039624e+09 0.11011251 0.029189667 -24.092454 45.971725 6592.6066 1.7094090e+09 0.10820931 0.027484288 -24.158203 45.892617 6594.2024 1.6235986e+09 0.10589977 0.026061394 -24.223952 45.814344 6595.7982 1.5382850e+09 0.10336943 0.025706350 -24.289701 45.736071 6597.3940 1.4540580e+09 0.10140073 0.025598386 -24.355450 45.656109 6598.9898 1.3681881e+09 0.099471909 0.024934587 -24.421200 45.574704 6600.5856 1.2915361e+09 0.099130453 0.026193807 -24.486950 45.493300 6602.1814 1.2219022e+09 0.098099030 0.027361818 -24.552703 45.412972 6603.7772 1.1553080e+09 0.096415912 0.026203165 -24.618462 45.334687 6605.3730 1.0797886e+09 0.095959243 0.026977968 -24.684221 45.256403 6606.9688 1.0116326e+09 0.094887985 0.025763052 -24.749503 45.177645 6608.5646 9.5087010e+08 0.092783681 0.023717443 -24.812121 45.096241 6610.1604 8.9734188e+08 0.090905288 0.024156233 -24.874740 45.014838 6611.7562 8.5880834e+08 0.089138507 0.024476230 -24.937359 44.933435 6613.3520 8.1571463e+08 0.088638965 0.023702735 -24.999977 44.855029 6614.9478 7.8022495e+08 0.087850870 0.023287508 -25.062595 44.776756 6616.5436 7.4002105e+08 0.086810384 0.023367613 -25.125213 44.698483 6618.1394 7.0746569e+08 0.086496649 0.023876039 -25.187832 44.617818 6619.7352 6.7230713e+08 0.086097049 0.024703298 -25.250450 44.536413 6621.3310 6.4508293e+08 0.085329349 0.024979747 -25.313069 44.455009 6622.9268 6.1987974e+08 0.084277525 0.024511320 -25.375688 44.375389 6624.5226 5.8551365e+08 0.083186070 0.025142030 -25.438306 44.297116 6626.1184 5.6225509e+08 0.082255655 0.026440115 -25.500925 44.218843 6627.7141 5.3381158e+08 0.081002390 0.025592674 -25.563544 44.139393 6629.3099 5.1220934e+08 0.080113295 0.026053067 -25.626162 44.057989 6630.9057 4.9852559e+08 0.078745830 0.025930534 -25.688780 43.976586 6632.5015 4.8114517e+08 0.077747483 0.026092483 -25.750828 43.895752 6634.0973 4.6709548e+08 0.076531432 0.026333942 -25.810316 43.817479 6635.6931 4.4790280e+08 0.075519399 0.026503732 -25.869803 43.739206 6637.2889 4.2623329e+08 0.074664601 0.026019908 -25.929291 43.660933 6638.8847 4.1038583e+08 0.073825522 0.025633098 -25.988779 43.579567 6640.4805 3.9609718e+08 0.074426760 0.025211861 -26.048267 43.498163 6642.0763 3.8421753e+08 0.074557716 0.025154819 -26.107755 43.416759 6643.6721 3.7326855e+08 0.074009890 0.025294097 -26.167242 43.337842 6645.2679 3.5820505e+08 0.073667156 0.025577183 -26.226729 43.259569 6646.8637 3.4330243e+08 0.073048861 0.026367222 -26.286216 43.181296 6648.4595 3.2580923e+08 0.072549917 0.027271866 -26.343829 43.101136 6650.0553 3.1014795e+08 0.072452976 0.026267893 -26.400194 43.019719 6651.6511 2.9941140e+08 0.072174868 0.026983122 -26.456559 42.938303 6653.2469 2.8516361e+08 0.072092940 0.027651706 -26.514194 42.856891 6654.8427 2.7737165e+08 0.071291242 0.027677241 -26.573682 42.775488 6656.4385 2.6850446e+08 0.069904373 0.028408255 -26.633169 42.694085 6658.0343 2.5961812e+08 0.069001177 0.030121838 -26.691991 42.613347 6659.6301 2.4937904e+08 0.067926514 0.031703168 -26.748348 42.535075 6661.2258 2.3468392e+08 0.066963340 0.032649980 -26.804704 42.456802 6662.8216 2.2410112e+08 0.066161884 0.032583280 -26.861061 42.378466 6664.4174 2.1388293e+08 0.065346429 0.030678690 -26.917418 42.297065 6666.0132 2.0751056e+08 0.065304636 0.026911174 -26.973775 42.215660 6667.6090 1.9373194e+08 0.064803171 0.027327166 -27.030132 42.134255 6669.2048 1.8387878e+08 0.063803448 0.028145331 -27.086488 42.055433 6670.8006 1.7638216e+08 0.063795820 0.026957717 -27.142844 41.977160 6672.3964 1.6455713e+08 0.063422706 0.027109370 -27.199200 41.898887 6673.9922 1.5683821e+08 0.062562058 0.028943146 -27.255556 41.818639 6675.5880 1.4696229e+08 0.060774188 0.030924610 -27.311913 41.737236 6677.1838 1.4241813e+08 0.059243665 0.032096921 -27.368269 41.655833 6678.7796 1.4149389e+08 0.058619289 0.030415184 -27.423258 41.575797 6680.3754 1.3402302e+08 0.059146704 0.029522480 -27.476484 41.497524 6681.9712 1.2566082e+08 0.059447983 0.030402441 -27.529709 41.419251 6683.5670 1.1643733e+08 0.059414970 0.032019506 -27.582935 41.340217 6685.1628 1.0716035e+08 0.058904302 0.032876775 -27.636161 41.258812 6686.7586 1.0474386e+08 0.057432532 0.034202436 -27.689387 41.177407 6688.3544 1.0213320e+08 0.055248801 0.033866992 -27.742613 41.096156 6689.9502 1.0235430e+08 0.053845249 0.033160721 -27.795838 41.017883 6691.5460 97040702. 0.052704952 0.032872451 -27.849064 40.939610 6693.1418 91252933. 0.051737211 0.031555457 -27.902290 40.861337 6694.7376 87081806. 0.050891089 0.030227305 -27.955522 40.780377 6696.3333 81481741. 0.050149970 0.029814286 -28.008756 40.698961 6697.9291 82447982. 0.049529867 0.030208850 -28.061989 40.617546 6699.5249 78262973. 0.047896535 0.031106062 -28.115218 40.538210 6701.1207 76029868. 0.046165683 0.031586600 -28.168443 40.459937 6702.7165 77101507. 0.045877039 0.033448884 -28.221669 40.381664 6704.3123 73259194. 0.045424332 0.036330922 -28.274894 40.301927 6705.9081 74341052. 0.045292575 0.038283065 -28.328120 40.220523 6707.5039 73240880. 0.044506292 0.040114641 -28.381346 40.139120 6709.0997 69813282. 0.042856724 0.041069121 -28.435674 40.055512 6710.6955 69158032. 0.040559872 0.040632632 -28.492926 39.966054 6712.2913 66013533. 0.036709443 0.042370814 -28.550179 39.876597 6713.8871 62565568. 0.031025220 0.046895073 -28.604002 39.790998 6715.4829 59155212. 0.020911864 0.047872480 -28.654097 39.709593 6717.0787 56456670. -0.031169010 0.049869401 -28.704191 39.628189 6718.6745 53335297. 0.0063403425 0.050862875 -28.755179 39.547678 6720.2703 50016879. 0.10023373 0.050388450 -28.808404 39.469405