# # 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 = 41.983122 km # Date (UTC) = 2015-01-21T08:57:19.922 # Date (julian) = 2457043.87314724 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.7178 6.1961907e+10 0.078561597 0.034308949 -11.136804 54.834835 6508.5634 5.7027918e+10 0.087350621 0.034865468 -11.262346 54.728633 6510.4089 5.2481657e+10 0.096321976 0.035421986 -11.386494 54.621038 6512.2544 4.8115994e+10 0.10543910 0.035978505 -11.515751 54.510208 6514.1000 4.3631284e+10 0.11459390 0.036535023 -11.660595 54.389505 6515.9455 3.9410203e+10 0.12384104 0.037091542 -11.801077 54.271104 6517.7911 3.5541221e+10 0.13321369 0.037648060 -11.921088 54.163507 6519.6366 3.2387458e+10 0.14285803 0.038204579 -12.041098 54.055911 6521.4822 2.9820214e+10 0.15277963 0.038761097 -12.161108 53.951457 6523.3277 2.7517631e+10 0.15910678 0.039260333 -12.281118 53.848000 6525.1732 2.5347112e+10 0.16448908 0.039762443 -12.406321 53.736986 6527.0188 2.3138152e+10 0.16851158 0.040730109 -12.541483 53.611480 6528.8643 2.1052105e+10 0.17077425 0.042128157 -12.671414 53.490830 6530.7099 1.9236242e+10 0.17351316 0.044822506 -12.787286 53.383234 6532.5554 1.7773363e+10 0.17650170 0.047148183 -12.903158 53.275638 6534.4010 1.6586213e+10 0.17731640 0.048056721 -13.019030 53.168043 6536.2465 1.5501316e+10 0.17667957 0.048011052 -13.134901 53.060448 6538.0920 1.4517123e+10 0.17743719 0.049201501 -13.248960 52.952854 6539.9376 1.3662808e+10 0.17733871 0.050778552 -13.360694 52.845259 6541.7831 1.2828712e+10 0.17507731 0.051072567 -13.472833 52.737379 6543.6287 1.1923067e+10 0.17308104 0.051546891 -13.603192 52.616676 6545.4742 1.1022847e+10 0.17142139 0.052459815 -13.733551 52.495972 6547.3198 1.0158297e+10 0.16995471 0.053408963 -13.842273 52.387728 6549.1653 9.4533929e+09 0.16791864 0.054134735 -13.949868 52.280132 6551.0108 8.8895521e+09 0.16628717 0.055239557 -14.057464 52.172536 6552.8564 8.3682972e+09 0.16529646 0.055371215 -14.165059 52.064941 6554.7019 7.8932776e+09 0.16358260 0.054847110 -14.272655 51.957346 6556.5475 7.4420974e+09 0.16151715 0.053932637 -14.380251 51.849750 6558.3930 7.0374300e+09 0.15960269 0.052904408 -14.487846 51.742154 6560.2386 6.6643318e+09 0.15754231 0.052059219 -14.592540 51.634559 6562.0841 6.3142287e+09 0.15520385 0.050799879 -14.695997 51.526964 6563.9296 5.9880377e+09 0.15246270 0.048852985 -14.800632 51.419369 6565.7752 5.6734962e+09 0.15052195 0.047438164 -14.908227 51.311773 6567.6207 5.3795054e+09 0.14901953 0.046092346 -15.015822 51.204176 6569.4663 5.1110277e+09 0.14720420 0.044882771 -15.116232 51.096581 6571.3118 4.8442957e+09 0.14549465 0.044418113 -15.215551 50.988987 6573.1574 4.5911887e+09 0.14358152 0.043531207 -15.316740 50.881391 6575.0029 4.3588805e+09 0.14148008 0.042371799 -15.420197 50.773795 6576.8484 4.1435948e+09 0.13880700 0.040394819 -15.523508 50.666052 6578.6940 3.9671891e+09 0.13566360 0.037553732 -15.622827 50.554320 6580.5395 3.8040361e+09 0.13298119 0.036022152 -15.722145 50.442588 6582.3851 3.6189670e+09 0.13072267 0.035189006 -15.828722 50.322315 6584.2306 3.4143242e+09 0.12861058 0.034389887 -15.939769 50.196783 6586.0762 3.1866533e+09 0.12695069 0.033170312 -16.044393 50.081074 6587.9217 2.9774618e+09 0.12599587 0.033362582 -16.143712 49.973479 6589.7672 2.8156358e+09 0.12429753 0.031523840 -16.242487 49.865884 6591.6128 2.6762639e+09 0.12210049 0.028510455 -16.337668 49.758288 6593.4583 2.5547341e+09 0.12014967 0.026676116 -16.432848 49.650692 6595.3039 2.4287823e+09 0.11797212 0.025655083 -16.528029 49.543097 6597.1494 2.3067645e+09 0.11582880 0.025675578 -16.623210 49.435502 6598.9950 2.2017643e+09 0.11397175 0.024932139 -16.717156 49.327907 6600.8405 2.0998611e+09 0.11389343 0.026717783 -16.808198 49.220311 6602.6860 2.0032686e+09 0.11291970 0.026931194 -16.899241 49.112714 6604.5316 1.9116794e+09 0.11168658 0.026386913 -16.990283 49.001471 6606.3771 1.8215716e+09 0.11081577 0.026826279 -17.081324 48.889739 6608.2227 1.7402781e+09 0.10837422 0.023726484 -17.172367 48.779931 6610.0682 1.6647115e+09 0.10554242 0.024068153 -17.263409 48.672335 6611.9138 1.5824357e+09 0.10313908 0.024375750 -17.354452 48.564739 6613.7593 1.5095682e+09 0.10196706 0.023852178 -17.445494 48.457144 6615.6048 1.4409433e+09 0.10035773 0.023270141 -17.536536 48.349549 6617.4504 1.3748296e+09 0.099145657 0.023588572 -17.624961 48.239336 6619.2959 1.3081145e+09 0.098100412 0.024597316 -17.711866 48.127603 6621.1415 1.2431810e+09 0.097027047 0.025042556 -17.796423 48.019668 6622.9870 1.1916279e+09 0.095578084 0.024495283 -17.872463 47.925523 6624.8326 1.1553228e+09 0.094211957 0.025307971 -17.948502 47.831378 6626.6781 1.1239166e+09 0.092617681 0.025726945 -18.029476 47.731124 6628.5236 1.0857125e+09 0.091635463 0.025915698 -18.116381 47.623529 6630.3692 1.0422684e+09 0.090478816 0.025929212 -18.203285 47.515934 6632.2147 9.9439427e+08 0.089214566 0.026058093 -18.290188 47.408338 6634.0603 9.5213956e+08 0.087992443 0.026331239 -18.377092 47.300742 6635.9058 9.0825735e+08 0.086830286 0.026535628 -18.461425 47.190576 6637.7514 8.7020770e+08 0.085972905 0.025793422 -18.544190 47.078844 6639.5969 8.3237548e+08 0.085559234 0.025414731 -18.626956 46.967959 6641.4424 7.9471890e+08 0.085908858 0.025149803 -18.709722 46.860362 6643.2880 7.5879735e+08 0.085352558 0.025236100 -18.792488 46.752765 6645.1335 7.2322563e+08 0.084517377 0.025514236 -18.875254 46.645170 6646.9791 6.9548596e+08 0.083370379 0.026426944 -18.958019 46.537576 6648.8246 6.6254684e+08 0.082285813 0.027516281 -19.040785 46.428441 6650.6702 6.3324567e+08 0.081894072 0.026408654 -19.123550 46.316708 6652.5157 6.0312523e+08 0.081439945 0.027392410 -19.206315 46.204974 6654.3612 5.7506171e+08 0.080549790 0.027882335 -19.285127 46.097194 6656.2068 5.5374441e+08 0.078790992 0.028204908 -19.363754 45.989598 6658.0523 5.2894486e+08 0.077490033 0.030153876 -19.442375 45.882012 6659.8979 5.0993640e+08 0.076060071 0.031647302 -19.520989 45.774436 6661.7434 4.8807759e+08 0.074633251 0.032913584 -19.599605 45.666352 6663.5890 4.6805013e+08 0.073483334 0.032320000 -19.678233 45.554617 6665.4345 4.4432356e+08 0.073442800 0.027835195 -19.756861 45.442883 6667.2800 4.2603655e+08 0.073119930 0.027206320 -19.835488 45.334070 6669.1256 4.0525679e+08 0.072228399 0.028226723 -19.914115 45.226475 6670.9711 3.8752388e+08 0.072495221 0.026878726 -19.991545 45.117684 6672.8167 3.7448536e+08 0.072265388 0.027352953 -20.066034 45.005950 6674.6622 3.5463515e+08 0.071234384 0.029513408 -20.140523 44.894216 6676.5078 3.4452598e+08 0.069272335 0.032040967 -20.215012 44.786094 6678.3533 3.2635574e+08 0.068708957 0.030700316 -20.289501 44.678497 6680.1988 3.1402699e+08 0.069145573 0.029484354 -20.363990 44.570902 6682.0444 3.0114219e+08 0.069776167 0.030458451 -20.438480 44.463307 6683.8899 2.8541777e+08 0.070021957 0.032492772 -20.512969 44.355548 6685.7355 2.7423380e+08 0.069627252 0.033481670 -20.587458 44.243813 6687.5810 2.5887490e+08 0.067752624 0.034018866 -20.661948 44.132079 6689.4266 2.5127021e+08 0.065528654 0.033632060 -20.736437 44.022925 6691.2721 2.4040507e+08 0.064683266 0.032937067 -20.810927 43.915331 6693.1176 2.3419013e+08 0.063888266 0.031563732 -20.884559 43.807736 6694.9632 2.2792415e+08 0.063290036 0.029911080 -20.954910 43.700140 6696.8087 2.1651136e+08 0.062792659 0.030011793 -21.025261 43.592543 6698.6543 2.0633964e+08 0.061722128 0.031115870 -21.095611 43.481677 6700.4998 1.9328790e+08 0.060210034 0.031038439 -21.165961 43.369943 6702.3454 1.8382357e+08 0.059118756 0.033152494 -21.236311 43.259757 6704.1909 1.7739617e+08 0.059276183 0.036271292 -21.306662 43.152163 6706.0364 1.6999479e+08 0.059214794 0.038509817 -21.377013 43.044568 6707.8820 1.6361034e+08 0.058915997 0.040060484 -21.447364 42.933009 6709.7275 1.5719448e+08 0.057991111 0.040669804 -21.517715 42.821275 6711.5731 1.5139268e+08 0.056235633 0.041344222 -21.588066 42.711780 6713.4186 1.4908635e+08 0.054445102 0.045200635 -21.658417 42.604184 6715.2641 1.4342994e+08 0.052821110 0.047648753 -21.728252 42.496588 6717.1097 1.3749110e+08 0.051002491 0.049867483 -21.794465 42.388993 6718.9552 1.2808680e+08 0.048905314 0.051300120 -21.860677 42.281398 6720.8008 1.2006612e+08 0.049259946 0.050326982 -21.929820 42.170873 6722.6463 1.1679800e+08 0.048584915 0.049806184 -22.000171 42.059139 6724.4919 1.1143965e+08 0.045651939 0.045819287 -22.069314 41.948613 6726.3374 1.0771595e+08 0.043042474 0.040954411 -22.135527 41.841018 6728.1829 1.0373118e+08 0.042529261 0.039887398 -22.201739 41.733423 6730.0285 99671748. 0.041262652 0.040417968 -22.267952 41.625828 6731.8740 94292247. 0.039737649 0.043489514 -22.334165 41.518231 6733.7196 85881323. 0.038737677 0.047831101 -22.400379 41.408737 6735.5651 83074800. 0.039708554 0.049893349 -22.466591 41.297002 6737.4107 78310199. 0.040820954 0.055443741 -22.532629 41.185443 6739.2562 74703445. 0.040991365 0.063140098 -22.594703 41.077848 6741.1017 72155385. 0.039560996 0.066048882 -22.656777 40.970254 6742.9473 65709910. 0.035775248 0.070919005 -22.721441 40.862658 6744.7928 66405866. 0.031874852 0.078406649 -22.787654 40.755062 6746.6384 64293157. 0.026140817 0.071565439 -22.852999 40.646600 6748.4839 59851215. 0.0089399143 0.069562815 -22.915073 40.534868 6750.3295 58464725. 0.019282328 0.072566701 -22.977147 40.423135 6752.1750 55224536. 0.045212639 0.073931963 -23.039221 40.314683