# # 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 = 44.466243 km # Date (UTC) = 2012-01-18T10:08:00.640 # Date (julian) = 2455944.92222963 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.7381 8.0104581e+10 0.10449133 0.035822796 -34.871316 48.524165 6513.9488 7.0158218e+10 0.11490567 0.036489437 -35.002290 48.375574 6516.1595 6.1355080e+10 0.12542027 0.037156079 -35.116305 48.241730 6518.3703 5.4401433e+10 0.13618754 0.037822720 -35.229871 48.107886 6520.5810 4.8755535e+10 0.14721691 0.038489362 -35.338927 47.974043 6522.7918 4.3549303e+10 0.15620526 0.039124582 -35.448346 47.840562 6525.0025 3.8883861e+10 0.16202836 0.039781930 -35.562361 47.711677 6527.2132 3.4757633e+10 0.16569158 0.040871277 -35.676098 47.582514 6529.4240 3.1162892e+10 0.16844602 0.042911123 -35.785156 47.448670 6531.6347 2.8060382e+10 0.17105253 0.046152493 -35.894023 47.314827 6533.8454 2.5377311e+10 0.17240389 0.047878872 -35.998123 47.180983 6536.0562 2.3009186e+10 0.17184819 0.047840760 -36.102328 47.047246 6538.2669 2.0910008e+10 0.17303725 0.049286651 -36.211386 46.918360 6540.4776 1.8999780e+10 0.17291308 0.051079753 -36.320414 46.789445 6542.6884 1.7311587e+10 0.17163387 0.051263585 -36.424524 46.655611 6544.8991 1.5863492e+10 0.17079646 0.052373727 -36.528625 46.521767 6547.1099 1.4524106e+10 0.16919879 0.053329139 -36.632726 46.387924 6549.3206 1.3372732e+10 0.16701121 0.054292984 -36.736828 46.254080 6551.5313 1.2353349e+10 0.16505020 0.055422254 -36.840928 46.120237 6553.7421 1.1481012e+10 0.16254425 0.054962044 -36.945028 45.986393 6555.9528 1.0745650e+10 0.15989962 0.054052789 -37.044409 45.857271 6558.1635 1.0012273e+10 0.15793336 0.053099956 -37.143552 45.728385 6560.3743 9.3183211e+09 0.15524185 0.051936860 -37.242694 45.594865 6562.5850 8.6757584e+09 0.15257362 0.050323252 -37.341835 45.461021 6564.7957 8.0804796e+09 0.15012667 0.048410969 -37.440979 45.327177 6567.0065 7.5277902e+09 0.14804309 0.046611714 -37.540123 45.193333 6569.2172 7.0176035e+09 0.14605000 0.044866561 -37.639266 45.059490 6571.4279 6.5386825e+09 0.14460382 0.044386395 -37.738410 44.925646 6573.6387 6.1063313e+09 0.14249949 0.043144955 -37.833175 44.791803 6575.8494 5.6983217e+09 0.14029424 0.041522476 -37.927360 44.657960 6578.0602 5.2931423e+09 0.13799338 0.038554626 -38.025839 44.528409 6580.2709 4.9151268e+09 0.13549622 0.036270413 -38.124982 44.399523 6582.4816 4.6057923e+09 0.13314383 0.035162731 -38.209929 44.280629 6584.6924 4.3584333e+09 0.13066764 0.034138356 -38.292341 44.163519 6586.9031 4.1334899e+09 0.12810627 0.033159622 -38.378454 44.037322 6589.1138 3.8919877e+09 0.12551535 0.032820144 -38.467681 43.903478 6591.3246 3.6283951e+09 0.12247141 0.028835673 -38.559516 43.769634 6593.5353 3.3822003e+09 0.11958533 0.026604551 -38.653703 43.635791 6595.7460 3.1582023e+09 0.11610148 0.025700938 -38.745369 43.501947 6597.9568 2.9459834e+09 0.11319522 0.025420805 -38.834598 43.368104 6600.1675 2.7569319e+09 0.11162530 0.025334247 -38.926262 43.236695 6602.3782 2.5940233e+09 0.11035691 0.027193852 -39.020447 43.107810 6604.5890 2.4528124e+09 0.10899786 0.026420995 -39.112284 42.976575 6606.7997 2.3193703e+09 0.10818824 0.026066894 -39.201513 42.842731 6609.0105 2.1804547e+09 0.10535117 0.023709037 -39.288478 42.708888 6611.2212 2.0475519e+09 0.10270620 0.024817402 -39.372749 42.575044 6613.4319 1.9069876e+09 0.10198001 0.023732065 -39.454297 42.448551 6615.6427 1.7949481e+09 0.10067078 0.023271305 -39.532371 42.331441 6617.8534 1.6956761e+09 0.099941124 0.023722191 -39.611274 42.212091 6620.0641 1.6107223e+09 0.099259194 0.024787865 -39.695547 42.078248 6622.2749 1.5313680e+09 0.097885253 0.024684831 -39.779819 41.944982 6624.4856 1.4363689e+09 0.096203622 0.025122252 -39.864090 41.816096 6626.6963 1.3490004e+09 0.094461250 0.025703700 -39.948853 41.686719 6628.9071 1.2685102e+09 0.093114812 0.026071377 -40.038082 41.552875 6631.1178 1.1945917e+09 0.091306105 0.025942733 -40.126499 41.419032 6633.3285 1.1189105e+09 0.089879432 0.026209614 -40.205813 41.285189 6635.5393 1.0553421e+09 0.088192205 0.026480662 -40.284767 41.152427 6637.7500 1.0008117e+09 0.086748221 0.025794075 -40.358504 41.035317 6639.9608 9.5823645e+08 0.086178972 0.025284679 -40.432241 40.918206 6642.1715 9.2105233e+08 0.085841339 0.025158714 -40.510212 40.788392 6644.3822 8.7551565e+08 0.084464107 0.025384917 -40.589527 40.654548 6646.5930 8.3257920e+08 0.082997724 0.026227085 -40.672519 40.524383 6648.8037 7.8890616e+08 0.081488346 0.027502284 -40.756789 40.395497 6651.0144 7.4189062e+08 0.080936350 0.026495228 -40.837469 40.263020 6653.2252 6.9991351e+08 0.080562807 0.027640626 -40.916783 40.129176 6655.4359 6.5494994e+08 0.079353119 0.027790334 -40.996098 39.995333 6657.6466 6.1925501e+08 0.077902837 0.029651197 -41.075412 39.861489 6659.8574 5.8780472e+08 0.076661076 0.031655748 -41.154727 39.727646 6662.0681 5.5487462e+08 0.075381082 0.033006055 -41.234041 39.593802 6664.2789 5.2738842e+08 0.074367016 0.031185786 -41.303768 39.474134 6666.4896 5.0395467e+08 0.074430361 0.027003997 -41.368830 39.361361 6668.7003 4.8581267e+08 0.073376878 0.028090510 -41.439126 39.240851 6670.9111 4.6975132e+08 0.073313195 0.026906554 -41.518440 39.107007 6673.1218 4.4858847e+08 0.072951828 0.027641369 -41.596020 38.973164 6675.3325 4.2730183e+08 0.071194319 0.030435274 -41.670378 38.839320 6677.5433 4.0603821e+08 0.069501377 0.031585909 -41.744736 38.707126 6679.7540 3.8461331e+08 0.069466331 0.029644698 -41.819092 38.578241 6681.9647 3.6566191e+08 0.070260264 0.030397490 -41.893449 38.447792 6684.1755 3.4351135e+08 0.070460346 0.032662996 -41.967807 38.313949 6686.3862 3.2341744e+08 0.069519747 0.033985787 -42.042165 38.180105 6688.5969 3.0412564e+08 0.066736389 0.033922986 -42.116521 38.046261 6690.8077 2.8596857e+08 0.065371549 0.033023303 -42.188268 37.918333 6693.0184 2.7433222e+08 0.064391904 0.031597771 -42.253330 37.805559 6695.2292 2.6302691e+08 0.063665749 0.029817381 -42.318392 37.692785 6697.4399 2.5013792e+08 0.062904647 0.030146934 -42.392520 37.559463 6699.6506 2.4023219e+08 0.061339304 0.030990092 -42.466878 37.425619 6701.8614 2.2518911e+08 0.059576650 0.032673305 -42.536486 37.291778 6704.0721 2.1451546e+08 0.059894056 0.036212956 -42.605886 37.157936 6706.2828 2.0642660e+08 0.059867371 0.038938650 -42.675286 37.028755 6708.4936 1.9256048e+08 0.059474076 0.040581055 -42.744686 36.899868 6710.7043 1.8513081e+08 0.057937573 0.040634353 -42.814086 36.766403 6712.9150 1.7170422e+08 0.055924694 0.043528880 -42.883487 36.632559 6715.1258 1.6125625e+08 0.053876334 0.047507227 -42.957380 36.498716 6717.3365 1.5667858e+08 0.051707515 0.049853454 -43.031738 36.364872 6719.5472 1.4962464e+08 0.049854825 0.050849915 -43.097281 36.235436 6721.7580 1.4422354e+08 0.050018345 0.050532283 -43.161723 36.106551 6723.9687 1.3282742e+08 0.048013396 0.049909215 -43.230488 35.973344 6726.1795 1.2415170e+08 0.044010411 0.040952986 -43.299890 35.839501 6728.3902 1.1794485e+08 0.043276739 0.040181126 -43.369290 35.709893 6730.6009 1.1364543e+08 0.041601157 0.041202845 -43.438690 35.581008 6732.8117 1.1093932e+08 0.040179922 0.043889633 -43.503941 35.447972 6735.0224 1.0584835e+08 0.040105708 0.049317209 -43.568385 35.314127 6737.2331 1.0079802e+08 0.041676176 0.054878216 -43.636892 35.180284 6739.4439 96851824. 0.041988917 0.063369763 -43.706292 35.046440 6741.6546 92798652. 0.040105277 0.067625662 -43.771713 34.916574 6743.8653 88935954. 0.035332378 0.076885004 -43.836155 34.787687 6746.0761 86321973. 0.033656436 0.078102804 -43.900598 34.654910 6748.2868 82901053. 0.029769272 0.068525829 -43.965041 34.521068 6750.4975 80497981. 0.026935096 0.072853715 -44.029485 34.391031 6752.7083 78818312. 0.024105574 0.073314860 -44.093928 34.262144 6754.9190 75195366. 0.022230953 0.074735572 -44.158364 34.129553 6757.1298 71156562. 0.019264800 0.076346282 -44.222797 33.995732 6759.3405 66276281. 0.019625552 0.075902121 -44.287236 33.865529 6761.5512 60377924. 0.020553967 0.078013767 -44.351678 33.736643 6763.7620 58069398. 0.023030277 0.078758339 -44.416121 33.604210 6765.9727 57170479. 0.021022071 0.079708763 -44.480564 33.470366 6768.1834 57254196. -0.0050604216 0.081516067 -44.541545 33.339984 6770.3942 57780426. 0.010218972 0.087835738 -44.601030 33.211097 6772.6049 54697102. 0.047578979 0.093197744 -44.663893 33.082211