# # 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 = 48.347059 km # Date (UTC) = 2015-12-28T10:32:26.121 # Date (julian) = 2457384.93919121 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.1890 5.7106395e+10 0.059479655 0.033244831 98.625324 29.545447 6505.4220 5.1350528e+10 0.069627241 0.033918190 98.679839 29.440302 6507.6550 4.6301574e+10 0.080031169 0.034591548 98.730486 29.335143 6509.8880 4.2101755e+10 0.090789698 0.035264907 98.781117 29.229983 6512.1210 3.8364245e+10 0.10184968 0.035938266 98.833419 29.124830 6514.3540 3.5346854e+10 0.11335846 0.036611624 98.887938 29.019685 6516.5870 3.2584268e+10 0.12518290 0.037284983 98.942458 28.914539 6518.8200 3.0036032e+10 0.13730868 0.037958342 98.996977 28.806039 6521.0530 2.7841359e+10 0.14980332 0.038631700 99.051497 28.696999 6523.2861 2.5696584e+10 0.15885783 0.039250012 99.106733 28.585242 6525.5191 2.3498337e+10 0.16493181 0.039722974 99.163690 28.466951 6527.7521 2.1381468e+10 0.17038259 0.041262493 99.220575 28.348809 6529.9851 1.9394903e+10 0.17508184 0.043804953 99.271199 28.243664 6532.2181 1.7735657e+10 0.17829240 0.046866396 99.321824 28.138518 6534.4511 1.6318025e+10 0.17978639 0.048070752 99.374179 28.033366 6536.6841 1.5003326e+10 0.18001274 0.048402609 99.428705 27.928207 6538.9171 1.3804334e+10 0.17971164 0.049603280 99.483232 27.823048 6541.1502 1.2705668e+10 0.17808354 0.051277835 99.534343 27.717901 6543.3832 1.1737290e+10 0.17548862 0.051482456 99.584971 27.612756 6545.6162 1.0864919e+10 0.17249991 0.052461087 99.635598 27.507611 6547.8492 1.0065105e+10 0.17008732 0.053610294 99.686222 27.402466 6550.0822 9.3087185e+09 0.16805281 0.055005941 99.736846 27.297320 6552.3152 8.6055149e+09 0.16572630 0.055507429 99.787476 27.192164 6554.5482 7.9547159e+09 0.16312770 0.054843884 99.838107 27.087005 6556.7812 7.3792169e+09 0.16060189 0.053898270 99.888738 26.981848 6559.0142 6.8536669e+09 0.15750673 0.052385574 99.939365 26.876702 6561.2473 6.3850916e+09 0.15445416 0.051250839 99.989992 26.771557 6563.4803 5.9723543e+09 0.15150472 0.049372810 100.03826 26.666411 6565.7133 5.6067206e+09 0.14866098 0.047508461 100.08499 26.561266 6567.9463 5.2657614e+09 0.14650485 0.045817076 100.13210 26.455635 6570.1793 4.9145460e+09 0.14449596 0.044843237 100.18906 26.337345 6572.4123 4.5653482e+09 0.14221427 0.043994035 100.24601 26.219056 6574.6453 4.2266467e+09 0.13957132 0.042545058 100.29819 26.110682 6576.8783 3.9351699e+09 0.13677441 0.040360412 100.34882 26.005536 6579.1113 3.6869487e+09 0.13327073 0.037009286 100.39872 25.901114 6581.3444 3.4652127e+09 0.13028264 0.035492333 100.44545 25.799850 6583.5774 3.2586618e+09 0.12743581 0.034729428 100.49219 25.698585 6585.8104 3.0661314e+09 0.12439248 0.033322893 100.54134 25.594918 6588.0434 2.8858209e+09 0.12184884 0.033365440 100.59196 25.489773 6590.2764 2.7212873e+09 0.11845782 0.030547915 100.64239 25.384627 6592.5094 2.5791567e+09 0.11502332 0.027578730 100.68912 25.279482 6594.7424 2.4488963e+09 0.11196214 0.025764967 100.73585 25.174338 6596.9754 2.3131627e+09 0.10915443 0.025722839 100.78541 25.062841 6599.2084 2.1759776e+09 0.10763464 0.024942267 100.83798 24.944550 6601.4415 2.0402926e+09 0.10779354 0.027253592 100.88938 24.829676 6603.6745 1.9170961e+09 0.10670980 0.026263988 100.93612 24.728412 6605.9075 1.8124154e+09 0.10644160 0.027426349 100.98285 24.627147 6608.1405 1.7153090e+09 0.10434457 0.023728657 101.02959 24.523425 6610.3735 1.6285451e+09 0.10140617 0.024359855 101.07632 24.418280 6612.6065 1.5552812e+09 0.099694929 0.023867585 101.12305 24.313134 6614.8395 1.4852004e+09 0.098635747 0.023362090 101.16978 24.207989 6617.0725 1.4149537e+09 0.097305256 0.023463299 101.21651 24.102843 6619.3056 1.3475962e+09 0.096666471 0.024599639 101.26324 23.999635 6621.5386 1.2852599e+09 0.095688523 0.024910938 101.30998 23.898385 6623.7716 1.2300141e+09 0.093788645 0.024777682 101.35671 23.797134 6626.0046 1.1684537e+09 0.092577813 0.026585062 101.40887 23.680044 6628.2376 1.1007607e+09 0.090840517 0.025799562 101.46145 23.561754 6630.4706 1.0304584e+09 0.089329617 0.025929461 101.51024 23.454479 6632.7036 9.6851912e+08 0.087785150 0.026116715 101.55698 23.353215 6634.9366 9.2010600e+08 0.086213449 0.026395165 101.60340 23.251642 6637.1696 8.7556453e+08 0.084530730 0.026078326 101.64624 23.146497 6639.4027 8.3992365e+08 0.083526940 0.025484157 101.68908 23.041351 6641.6357 8.0266336e+08 0.083758320 0.025150459 101.73690 22.931722 6643.8687 7.5987996e+08 0.082795540 0.025323778 101.78947 22.817812 6646.1017 7.1653503e+08 0.081911648 0.025972784 101.83982 22.705910 6648.3347 6.6975511e+08 0.081171663 0.027188334 101.88265 22.600765 6650.5677 6.3316295e+08 0.080827998 0.026385202 101.92549 22.495619 6652.8007 6.0427532e+08 0.080604793 0.027470832 101.97091 22.393040 6655.0337 5.7621640e+08 0.079609331 0.027624155 102.01764 22.291777 6657.2667 5.4844395e+08 0.077862981 0.029210528 102.06451 22.188918 6659.4998 5.1939434e+08 0.076525675 0.031730349 102.11271 22.070627 6661.7328 4.9424934e+08 0.075197246 0.032908164 102.16090 21.952337 6663.9658 4.7010597e+08 0.073866693 0.032215572 102.20475 21.847868 6666.1988 4.4919810e+08 0.073972246 0.026947332 102.24758 21.746616 6668.4318 4.3132047e+08 0.072990876 0.027852889 102.29172 21.642285 6670.6648 4.1206210e+08 0.072700920 0.027020635 102.33992 21.528376 6672.8978 3.8957087e+08 0.072355458 0.027399995 102.38811 21.414466 6675.1308 3.6842541e+08 0.070700065 0.030048957 102.43490 21.308977 6677.3638 3.5272586e+08 0.068622901 0.031840970 102.48163 21.203832 6679.5969 3.4000134e+08 0.068281709 0.029774553 102.52894 21.095243 6681.8299 3.2581769e+08 0.068992915 0.030294023 102.57713 20.981334 6684.0629 3.1092616e+08 0.069038317 0.032657283 102.62473 20.868820 6686.2959 2.9584605e+08 0.068003499 0.033933240 102.66758 20.767556 6688.5289 2.8485978e+08 0.064984637 0.033907280 102.71042 20.666292 6690.7619 2.7451866e+08 0.063321329 0.033028547 102.75616 20.558163 6692.9949 2.5948827e+08 0.062279516 0.031609978 102.80435 20.444254 6695.2279 2.4892038e+08 0.061545469 0.029817604 102.85014 20.333640 6697.4610 2.3713581e+08 0.060803784 0.030149599 102.88908 20.232389 6699.6940 2.2397321e+08 0.059233960 0.030950103 102.92803 20.131138 6701.9270 2.1305875e+08 0.057328119 0.032769580 102.97337 20.018088 6704.1600 2.0272492e+08 0.057534645 0.036256114 103.02157 19.899797 6706.3930 1.9663908e+08 0.057315243 0.039130384 103.06756 19.788492 6708.6260 1.9031621e+08 0.056688350 0.040725279 103.11040 19.687240 6710.8590 1.8536627e+08 0.054951304 0.040664637 103.15324 19.585989 6713.0920 1.7525743e+08 0.052715369 0.044019481 103.20058 19.474078 6715.3250 1.6608440e+08 0.050516438 0.047711032 103.24877 19.360169 6717.5581 1.5753041e+08 0.048239703 0.049839750 103.29452 19.246250 6719.7911 1.4840694e+08 0.046538720 0.050618270 103.33834 19.132324 6722.0241 1.4438524e+08 0.046604095 0.050575439 103.38337 19.018402 6724.2571 1.3769683e+08 0.043850630 0.047779811 103.43156 18.904494 6726.4901 1.3371792e+08 0.040493074 0.040955788 103.47973 18.790617 6728.7231 1.2688384e+08 0.039923083 0.040652985 103.51875 18.689269 6730.9561 1.2089514e+08 0.038150511 0.041689863 103.55769 18.588018 6733.1891 1.1600558e+08 0.036941405 0.044951168 103.60058 18.481362 6735.4221 1.1063831e+08 0.037554578 0.049741571 103.64877 18.367452 6737.6552 1.1102325e+08 0.039371176 0.056222583 103.69633 18.253542 6739.8882 1.0665849e+08 0.039532359 0.063913500 103.74014 18.139633 6742.1212 96865610. 0.037108816 0.068906027 103.78395 18.025724 6744.3542 89384578. 0.032579449 0.078067370 103.83154 17.911814 6746.5872 83611761. 0.029433089 0.072160396 103.87973 17.797905 6748.8202 83092841. 0.028255785 0.071332071 103.92539 17.686535 6751.0532 86023902. 0.025821227 0.073734175 103.96920 17.577006 6753.2862 81548408. 0.023137382 0.073903603 104.01301 17.466177 6755.5192 75741914. 0.020899133 0.074377688 104.05682 17.352267 6757.7523 71088846. 0.019355647 0.074457150 104.10063 17.238357 6759.9853 67218145. 0.019843952 0.076057717 104.14445 17.124431 6762.2183 65226234. 0.023396829 0.077698738 104.18826 17.010504 6764.4513 65312944. 0.025803768 0.079504906 104.23208 16.896591 6766.6843 62161447. 0.024916734 0.081261658 104.27589 16.782681 6768.9173 55832579. 0.016810860 0.084156746 104.31971 16.670742 6771.1503 51930020. 0.0052672609 0.089669751 104.36352 16.561214 6773.3833 48848192. -0.040131855 0.095085786 104.40733 16.450954 6775.6164 49430154. -0.011258304 0.10050182 104.45114 16.337044 6777.8494 50767484. 0.053422754 0.10591785 104.49495 16.223135