# # 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 = 39.471295 km # Date (UTC) = 2016-12-29T09:47:08.756 # Date (julian) = 2457751.90774023 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.5066 1.3312971e+11 0.045053913 0.032134439 -27.075939 49.059288 6501.5227 1.0557107e+11 0.052963696 0.032742367 -27.167364 48.971380 6503.5387 8.8508545e+10 0.061166636 0.033350296 -27.263586 48.878957 6505.5547 7.6281015e+10 0.069688388 0.033958224 -27.362472 48.784028 6507.5708 6.6290795e+10 0.078499606 0.034566152 -27.460499 48.689906 6509.5868 5.8420679e+10 0.087721983 0.035174080 -27.551910 48.602010 6511.6028 5.2376894e+10 0.097495801 0.035782008 -27.643322 48.514114 6513.6188 4.7052945e+10 0.10768258 0.036389936 -27.733783 48.427168 6515.6349 4.2136777e+10 0.11821827 0.036997864 -27.821680 48.342787 6517.6509 3.8048397e+10 0.12927457 0.037605792 -27.909576 48.258405 6519.6669 3.4350004e+10 0.14072113 0.038213720 -27.995979 48.172520 6521.6830 3.1168337e+10 0.15258009 0.038821649 -28.080371 48.084612 6523.6990 2.8322678e+10 0.15982143 0.039352355 -28.164764 47.996704 6525.7150 2.5601108e+10 0.16567145 0.039700611 -28.251197 47.910851 6527.7310 2.3180348e+10 0.17170446 0.041247220 -28.339094 47.826471 6529.7471 2.0988234e+10 0.17631746 0.043425810 -28.426991 47.742091 6531.7631 1.9086010e+10 0.17960126 0.046339386 -28.512292 47.655115 6533.7791 1.7331625e+10 0.18107757 0.047850695 -28.596672 47.567218 6535.7952 1.5728762e+10 0.18039308 0.047879359 -28.681053 47.479322 6537.8112 1.4279498e+10 0.18045105 0.049067666 -28.765434 47.394568 6539.8272 1.2948269e+10 0.17935124 0.050644955 -28.849814 47.310186 6541.8432 1.1796782e+10 0.17656270 0.051053071 -28.934021 47.225629 6543.8593 1.0756136e+10 0.17403175 0.051607414 -29.014896 47.137721 6545.8753 9.8396557e+09 0.17167345 0.052463409 -29.095771 47.049813 6547.8913 9.0161198e+09 0.17021522 0.053626322 -29.177368 46.961907 6549.9074 8.2679634e+09 0.16852952 0.054890954 -29.261749 46.874011 6551.9234 7.5817753e+09 0.16647529 0.055559876 -29.346130 46.786114 6553.9394 6.9533112e+09 0.16381785 0.054862833 -29.429239 46.699489 6555.9554 6.4073039e+09 0.16136217 0.054050559 -29.510104 46.615109 6557.9715 5.9405454e+09 0.15923052 0.053257183 -29.590968 46.530729 6559.9875 5.5053579e+09 0.15637994 0.052275719 -29.675017 46.438845 6562.0035 5.0552282e+09 0.15305605 0.050876540 -29.762037 46.339960 6564.0196 4.6190025e+09 0.14945718 0.048762731 -29.849057 46.241074 6566.0356 4.2197455e+09 0.14660134 0.047162750 -29.929988 46.153058 6568.0516 3.8884502e+09 0.14426778 0.045724210 -30.010853 46.065162 6570.0676 3.6181230e+09 0.14167493 0.044889486 -30.091209 45.977773 6572.0837 3.3589633e+09 0.13865877 0.044182235 -30.168568 45.893381 6574.0997 3.1326128e+09 0.13484623 0.042807117 -30.245927 45.808988 6576.1157 2.9121615e+09 0.13125286 0.041238180 -30.323283 45.723541 6578.1318 2.7003112e+09 0.12741828 0.038441544 -30.400633 45.635644 6580.1478 2.5089812e+09 0.12355624 0.036384171 -30.477982 45.547748 6582.1638 2.3268692e+09 0.12021619 0.035249215 -30.555331 45.459851 6584.1799 2.1719439e+09 0.11736084 0.034417540 -30.632680 45.371955 6586.1959 2.0359882e+09 0.11514131 0.033168764 -30.710029 45.284058 6588.2119 1.9058763e+09 0.11360557 0.033309164 -30.785224 45.198315 6590.2279 1.7973763e+09 0.11137468 0.030638071 -30.859058 45.113933 6592.2440 1.6954671e+09 0.10887406 0.027836562 -30.932891 45.029552 6594.2600 1.5964532e+09 0.10639895 0.026029800 -31.006732 44.942461 6596.2760 1.5100777e+09 0.10353108 0.025726019 -31.080574 44.854553 6598.2921 1.4206973e+09 0.10150809 0.025267730 -31.154417 44.766645 6600.3081 1.3335981e+09 0.10072805 0.025623230 -31.236784 44.668589 6602.3241 1.2455144e+09 0.099798594 0.027240052 -31.319848 44.569704 6604.3401 1.1508021e+09 0.098388926 0.026273239 -31.399255 44.476566 6606.3562 1.0681719e+09 0.097602468 0.026863945 -31.473087 44.392186 6608.3722 1.0027209e+09 0.094904040 0.023722531 -31.546920 44.307806 6610.3882 9.4459360e+08 0.091790732 0.024373917 -31.620753 44.221485 6612.4043 8.9403927e+08 0.089668723 0.024018710 -31.694587 44.133588 6614.4203 8.3827398e+08 0.088360601 0.023650935 -31.768420 44.045691 6616.4363 7.9343159e+08 0.086561524 0.023350778 -31.839772 43.957787 6618.4523 7.5110962e+08 0.085594091 0.024112365 -31.910098 43.869878 6620.4684 7.1179397e+08 0.084529476 0.024918128 -31.980424 43.781970 6622.4844 6.8031909e+08 0.082801146 0.024629063 -32.050742 43.694072 6624.5004 6.4728742e+08 0.080886803 0.025130184 -32.121059 43.606175 6626.5165 6.2019336e+08 0.079232771 0.025932895 -32.191548 43.518141 6628.5325 5.8802767e+08 0.078093174 0.025919288 -32.270657 43.423210 6630.5485 5.4989674e+08 0.077060183 0.025929653 -32.349765 43.328280 6632.5645 5.0957567e+08 0.076150653 0.026100038 -32.424554 43.236806 6634.5806 4.7351829e+08 0.075236875 0.026369192 -32.494871 43.148910 6636.5966 4.3943578e+08 0.074260416 0.026318070 -32.565189 43.061013 6638.6126 4.1379530e+08 0.073624943 0.025644952 -32.633231 42.973116 6640.6287 3.8848905e+08 0.074339425 0.025193735 -32.700032 42.885219 6642.6447 3.6736039e+08 0.074405626 0.025178078 -32.766833 42.797322 6644.6607 3.4908161e+08 0.073662966 0.025415015 -32.833642 42.709416 6646.6767 3.3310102e+08 0.072759703 0.026270450 -32.900453 42.621508 6648.6928 3.2082097e+08 0.071772976 0.027428026 -32.967264 42.533600 6650.7088 3.0439658e+08 0.071470260 0.026417501 -33.042075 42.438959 6652.7248 2.8765997e+08 0.071189632 0.027449950 -33.117227 42.344030 6654.7409 2.6595800e+08 0.070339107 0.027720615 -33.188781 42.252131 6656.7569 2.4436394e+08 0.068696612 0.028687730 -33.255582 42.164234 6658.7729 2.3109609e+08 0.067290438 0.031431854 -33.322382 42.076338 6660.7889 2.1693296e+08 0.066098050 0.032343107 -33.389184 41.988441 6662.8050 2.0851224e+08 0.064912681 0.032592636 -33.455987 41.900544 6664.8210 2.0092012e+08 0.064124795 0.029202091 -33.522789 41.812647 6666.8370 1.9051478e+08 0.063777503 0.027071700 -33.592854 41.719529 6668.8531 1.8176333e+08 0.062589762 0.028225668 -33.664052 41.624599 6670.8691 1.6954149e+08 0.062665969 0.026925999 -33.733557 41.531172 6672.8851 1.5716183e+08 0.062439553 0.027392627 -33.796851 41.443264 6674.9011 1.4725710e+08 0.061230701 0.029714963 -33.860145 41.355356 6676.9172 1.4034229e+08 0.059308244 0.032304835 -33.927830 41.263383 6678.9332 1.3593480e+08 0.058844422 0.030312451 -34.002982 41.164498 6680.9492 1.3140559e+08 0.060001987 0.029646394 -34.078134 41.065613 6682.9653 1.2578538e+08 0.060762843 0.031162036 -34.140332 40.975981 6684.9813 1.2047936e+08 0.060782029 0.032703888 -34.200101 40.888085 6686.9973 1.1338540e+08 0.059346340 0.034341337 -34.259880 40.800182 6689.0133 1.1336853e+08 0.056861055 0.034004014 -34.331043 40.705274 6691.0294 1.1028186e+08 0.056240239 0.032994333 -34.402241 40.610344 6693.0454 1.1113858e+08 0.055704277 0.031588514 -34.469723 40.518718 6695.0614 1.0746790e+08 0.055351210 0.029848190 -34.533008 40.430822 6697.0775 1.0273158e+08 0.054982612 0.030101068 -34.596294 40.342925 6699.0935 95399200. 0.053871664 0.031504171 -34.662061 40.248147 6701.1095 81158494. 0.052155746 0.031570135 -34.729313 40.149247 6703.1255 72338130. 0.052013190 0.033989384 -34.795835 40.051764 6705.1416 64244312. 0.052140635 0.036920293 -34.855604 39.967383 6707.1576 63035943. 0.051983300 0.040164250 -34.915373 39.883002 6709.1736 63391452. 0.051593943 0.041022106 -34.977036 39.794946 6711.1897 59506292. 0.049954608 0.040908012 -35.044279 39.696060 6713.2057 59638125. 0.048214054 0.044430550 -35.111522 39.597174 6715.2217 60653121. 0.046515209 0.047605353 -35.173345 39.506258 6717.2377 62619469. 0.044627899 0.049859563 -35.233114 39.418361 6719.2538 60382357. 0.042277545 0.051128736 -35.292883 39.330465 6721.2698 53319126. 0.041309704 0.050385191 -35.359236 39.236373 6723.2858 49667894. 0.037025633 0.049528356 -35.426479 39.141444 6725.3019 46770289. 0.014777837 0.041387463 -35.492326 39.045120 6727.3179 48401016. 0.029094164 0.040536869 -35.555612 38.946235 6729.3339 48003303. 0.058942809 0.040822864 -35.618899 38.847349