# # 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 = 41.628661 km # Date (UTC) = 2012-01-11T09:27:29.739 # Date (julian) = 2455937.89409420 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.5277 2.5626339e+11 0.024252929 0.029125323 -25.065677 46.972713 6491.8210 2.1997806e+11 0.032376009 0.029816862 -25.175153 46.844586 6494.1143 1.8997730e+11 0.040181675 0.030508401 -25.274141 46.723101 6496.4076 1.6598928e+11 0.047564565 0.031199940 -25.374179 46.602668 6498.7009 1.4688833e+11 0.054444861 0.031891479 -25.477666 46.485682 6500.9942 1.2960798e+11 0.060879388 0.032583017 -25.581259 46.368511 6503.2875 1.1285278e+11 0.066907807 0.033274556 -25.694390 46.234811 6505.5808 9.7713706e+10 0.072577747 0.033966095 -25.806580 46.102223 6507.8741 8.4519630e+10 0.078127162 0.034657634 -25.905567 45.985238 6510.1674 7.4301123e+10 0.084038058 0.035349173 -26.004555 45.868252 6512.4607 6.6569817e+10 0.090922533 0.036040711 -26.099756 45.751253 6514.7540 5.9971552e+10 0.099147932 0.036732250 -26.194258 45.634252 6517.0473 5.3774272e+10 0.10885816 0.037423789 -26.300343 45.503670 6519.3406 4.7829999e+10 0.12014283 0.038115328 -26.413474 45.364827 6521.6339 4.2327385e+10 0.13311538 0.038806867 -26.513981 45.240786 6523.9272 3.7792684e+10 0.14245276 0.039408927 -26.608468 45.123802 6526.2205 3.4236536e+10 0.15167260 0.039899299 -26.702956 45.006817 6528.5138 3.1218998e+10 0.16178579 0.041850115 -26.797444 44.889831 6530.8071 2.8536119e+10 0.16960735 0.044958683 -26.890888 44.771801 6533.1004 2.6234325e+10 0.17569078 0.047562273 -26.980876 44.650317 6535.3937 2.4090279e+10 0.17679539 0.048053492 -27.071036 44.528716 6537.6870 2.1995619e+10 0.17622930 0.049009137 -27.179025 44.395017 6539.9803 2.0038464e+10 0.17531219 0.050830312 -27.285844 44.262403 6542.2736 1.8228584e+10 0.17247707 0.051106130 -27.375832 44.145417 6544.5669 1.6731302e+10 0.17051730 0.052104267 -27.465820 44.028432 6546.8602 1.5423830e+10 0.16865255 0.053172373 -27.555809 43.911447 6549.1536 1.4215000e+10 0.16655879 0.054122760 -27.645797 43.794463 6551.4469 1.3189278e+10 0.16517261 0.055392603 -27.735785 43.674689 6553.7402 1.2297413e+10 0.16330096 0.054963002 -27.825773 43.553205 6556.0335 1.1459562e+10 0.16109527 0.054008207 -27.918828 43.426866 6558.3268 1.0579569e+10 0.15929270 0.052960870 -28.016532 43.293167 6560.6201 9.6890578e+09 0.15667105 0.051715250 -28.108705 43.167036 6562.9134 8.8953797e+09 0.15421475 0.050010812 -28.194194 43.050050 6565.2067 8.2357992e+09 0.15173790 0.048083736 -28.280719 42.932028 6567.5000 7.6680086e+09 0.14942822 0.046194461 -28.370707 42.810544 6569.7933 7.1342314e+09 0.14735581 0.044904053 -28.460625 42.689094 6572.0866 6.6316586e+09 0.14505825 0.044180585 -28.541627 42.572093 6574.3799 6.1694622e+09 0.14193567 0.042672560 -28.622629 42.455091 6576.6732 5.7487245e+09 0.13873104 0.040596571 -28.707155 42.338102 6578.9665 5.3702574e+09 0.13456713 0.037123459 -28.792645 42.221116 6581.2598 5.0322099e+09 0.13106793 0.035517949 -28.875600 42.101598 6583.5531 4.7394207e+09 0.12816608 0.034741730 -28.956590 41.980116 6585.8464 4.4357844e+09 0.12563194 0.033294124 -29.043271 41.854472 6588.1397 4.1097502e+09 0.12420645 0.033333289 -29.140975 41.720771 6590.4330 3.7890164e+09 0.12209536 0.030256683 -29.232062 41.593688 6592.7263 3.4906958e+09 0.11995215 0.027368099 -29.313051 41.476704 6595.0196 3.2529619e+09 0.11762963 0.025625600 -29.394040 41.358940 6597.3129 3.0561052e+09 0.11501551 0.025623998 -29.475030 41.237455 6599.6062 2.8703851e+09 0.11365449 0.024966188 -29.556019 41.115971 6601.8995 2.7090720e+09 0.11318842 0.027469290 -29.632730 40.998764 6604.1928 2.5510593e+09 0.11159059 0.026185738 -29.709220 40.881779 6606.4861 2.4085061e+09 0.11073968 0.026630507 -29.788988 40.764794 6608.7794 2.2764644e+09 0.10753569 0.023711765 -29.869977 40.647810 6611.0727 2.1365767e+09 0.10413949 0.024912111 -29.954219 40.522371 6613.3660 1.9948188e+09 0.10283446 0.023707867 -30.041638 40.388672 6615.6593 1.8585706e+09 0.10105291 0.023271816 -30.122924 40.261828 6617.9526 1.7312249e+09 0.099944418 0.023755073 -30.199414 40.140343 6620.2459 1.6223212e+09 0.098793011 0.024846431 -30.275904 40.020383 6622.5392 1.5266914e+09 0.096914133 0.024614481 -30.352395 39.903397 6624.8325 1.4411792e+09 0.094780141 0.025307931 -30.428886 39.786409 6627.1258 1.3664043e+09 0.092096296 0.025365397 -30.505388 39.669408 6629.4191 1.2910934e+09 0.090319858 0.026033334 -30.581889 39.552406 6631.7124 1.2191981e+09 0.087991019 0.026003129 -30.658380 39.435419 6634.0057 1.1541177e+09 0.086106196 0.026327257 -30.734870 39.318433 6636.2990 1.0938983e+09 0.084547549 0.026433645 -30.808339 39.198427 6638.5923 1.0402800e+09 0.083585037 0.025645838 -30.880329 39.076943 6640.8856 9.8111614e+08 0.084240099 0.025162299 -30.956938 38.949974 6643.1789 9.1839983e+08 0.084032805 0.025219628 -31.039215 38.816275 6645.4722 8.5930670e+08 0.083156813 0.025672886 -31.116305 38.691005 6647.7655 8.0578227e+08 0.082219307 0.026840813 -31.188295 38.574021 6650.0588 7.6101007e+08 0.081521324 0.026268695 -31.260286 38.457037 6652.3521 7.1987332e+08 0.081021095 0.027347395 -31.332276 38.340051 6654.6454 6.7999768e+08 0.080085614 0.027761283 -31.404267 38.222799 6656.9387 6.4179506e+08 0.078119235 0.028847301 -31.476257 38.101315 6659.2320 6.1166700e+08 0.076456534 0.031786205 -31.548248 37.979830 6661.5253 5.8065353e+08 0.074961469 0.032802493 -31.628846 37.848125 6663.8186 5.4664167e+08 0.073479266 0.032256360 -31.711123 37.714425 6666.1119 5.1197359e+08 0.073389133 0.026930399 -31.780210 37.595636 6668.4052 4.7915721e+08 0.072347290 0.027829344 -31.847702 37.478651 6670.6985 4.5370128e+08 0.071892850 0.027005030 -31.918205 37.361666 6672.9918 4.3492414e+08 0.071292285 0.027454463 -31.990195 37.244682 6675.2851 4.1660768e+08 0.069228564 0.030344425 -32.060173 37.127698 6677.5784 3.9636179e+08 0.067193760 0.031535963 -32.127665 37.010712 6679.8717 3.7556700e+08 0.066953790 0.029547438 -32.197323 36.889973 6682.1650 3.5174978e+08 0.067515916 0.030550610 -32.274458 36.756274 6684.4583 3.3438360e+08 0.067417550 0.032677349 -32.348893 36.625995 6686.7516 3.1563434e+08 0.065982535 0.034198378 -32.416384 36.504510 6689.0449 2.9616785e+08 0.062997654 0.033975604 -32.483875 36.383282 6691.3382 2.8073717e+08 0.062053293 0.032921469 -32.551377 36.266281 6693.6315 2.6406274e+08 0.061051829 0.031387443 -32.618879 36.149279 6695.9248 2.5247282e+08 0.060719742 0.029689598 -32.690131 36.018330 6698.2181 2.3845377e+08 0.059739671 0.030517194 -32.762123 35.884629 6700.5114 2.2504090e+08 0.057851368 0.031047044 -32.830105 35.765816 6702.8047 2.1212685e+08 0.056960909 0.033519294 -32.897595 35.648832 6705.0980 2.0074245e+08 0.057086861 0.036842847 -32.962081 35.531847 6707.3913 1.9084768e+08 0.056623205 0.040130771 -33.025075 35.414862 6709.6846 1.8013205e+08 0.055623214 0.040697097 -33.092077 35.290429 6711.9779 1.7273214e+08 0.053391418 0.041804829 -33.164069 35.156730 6714.2712 1.6434317e+08 0.051151562 0.047323798 -33.233807 35.031403 6716.5645 1.5677813e+08 0.049190568 0.049232837 -33.301297 34.914419 6718.8578 1.4715094e+08 0.046688695 0.051148396 -33.370041 34.792781 6721.1511 1.3734814e+08 0.046973141 0.050349431 -33.442034 34.659081 6723.4444 1.2913724e+08 0.045564254 0.049616803 -33.509522 34.530959 6725.7377 1.2620590e+08 0.041504153 0.041115203 -33.568013 34.413975 6728.0310 1.2303425e+08 0.040770393 0.039672063 -33.628005 34.295132 6730.3243 1.1450215e+08 0.039347606 0.040823584 -33.699997 34.161431 6732.6176 1.0588218e+08 0.037909145 0.043853911 -33.770490 34.030515 6734.9109 97967761. 0.037880471 0.049298792 -33.833484 33.913530 6737.2042 92369072. 0.039780033 0.054786119 -33.896477 33.796546 6739.4975 87263273. 0.040327831 0.063435425 -33.963110 33.663780 6741.7908 81217824. 0.038395300 0.068014166 -34.029949 33.530122 6744.0841 77528790. 0.033405958 0.077858480 -34.092952 33.413085 6746.3774 78078785. 0.030657759 0.074599287 -34.155944 33.296102 6748.6707 73902467. 0.027159453 0.070545613 -34.221933 33.166131 6750.9640 67630609. 0.021067611 0.073650246 -34.288783 33.032430 6753.2573 62096426. -0.0014508552 0.073810050 -34.348678 32.912641 6755.5506 60791288. 0.011999134 0.074363930 -34.407171 32.795658 6757.8439 64473523. 0.044217931 0.074178955 -34.470760 32.668482