# # 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 = 52.315213 km # Date (UTC) = 2015-11-21T10:59:22.397 # Date (julian) = 2457347.95789811 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.2754 6.7352963e+10 0.028779811 0.030858532 90.900963 28.597677 6497.5262 6.0410034e+10 0.035619870 0.031537227 90.953951 28.469617 6499.7769 5.5042005e+10 0.042552764 0.032215921 91.006939 28.341557 6502.0276 5.0622996e+10 0.049754483 0.032894616 91.061831 28.199710 6504.2783 4.6539812e+10 0.057311447 0.033573310 91.117346 28.053354 6506.5290 4.2392018e+10 0.065202316 0.034252005 91.176759 27.906996 6508.7797 3.8821553e+10 0.073696264 0.034930699 91.237321 27.760639 6511.0304 3.5576937e+10 0.082837769 0.035609393 91.288406 27.628749 6513.2811 3.3045432e+10 0.093020379 0.036288088 91.336980 27.500690 6515.5318 3.0855561e+10 0.10415043 0.036966782 91.391862 27.363005 6517.7825 2.8534721e+10 0.11596527 0.037645477 91.452425 27.216647 6520.0332 2.6382249e+10 0.12865517 0.038324171 91.506456 27.082660 6522.2839 2.4561373e+10 0.14156509 0.038991598 91.555028 26.959017 6524.5346 2.2993188e+10 0.15009696 0.039616888 91.605543 26.829013 6526.7853 2.1430671e+10 0.15775633 0.040491413 91.661058 26.682656 6529.0360 1.9788332e+10 0.16399352 0.042293187 91.714501 26.541762 6531.2867 1.8235555e+10 0.17009504 0.045646036 91.763076 26.413703 6533.5374 1.6942392e+10 0.17527232 0.047747986 91.811650 26.285644 6535.7882 1.5872097e+10 0.17682038 0.047882399 91.860232 26.157565 6538.0389 1.4842723e+10 0.17832377 0.049175604 91.908814 26.029486 6540.2896 1.3806250e+10 0.17772121 0.050990901 91.962733 25.891221 6542.5403 1.2781698e+10 0.17507469 0.051207355 92.018248 25.749910 6544.7910 1.1834537e+10 0.17309513 0.052286005 92.068292 25.619047 6547.0417 1.1052080e+10 0.17088856 0.053303216 92.116866 25.490988 6549.2924 1.0308986e+10 0.16850608 0.054264249 92.169076 25.353345 6551.5431 9.5570476e+09 0.16681994 0.055426386 92.224591 25.206988 6553.7938 8.8175682e+09 0.16467445 0.054936033 92.276342 25.072948 6556.0445 8.1496347e+09 0.16237517 0.054006582 92.324916 24.949305 6558.2952 7.5878638e+09 0.16039956 0.052987745 92.372264 24.824435 6560.5459 7.1324124e+09 0.15754005 0.051782091 92.416422 24.696375 6562.7966 6.6898974e+09 0.15482696 0.050121884 92.460729 24.568141 6565.0473 6.2428657e+09 0.15234381 0.048264650 92.516244 24.426832 6567.2980 5.7935938e+09 0.15002355 0.046365188 92.571399 24.285942 6569.5487 5.3624579e+09 0.14800966 0.044888139 92.615557 24.157882 6571.7995 5.0255747e+09 0.14602195 0.044284929 92.659715 24.029822 6574.0502 4.7483859e+09 0.14305897 0.042830915 92.707261 23.905150 6576.3009 4.5109625e+09 0.14019079 0.041025094 92.755835 23.781506 6578.5516 4.2727165e+09 0.13677146 0.037778622 92.805361 23.646448 6580.8023 4.0129034e+09 0.13340560 0.035779335 92.855828 23.500091 6583.0530 3.7665243e+09 0.13043762 0.034994849 92.903009 23.365571 6585.3037 3.5358336e+09 0.12736879 0.033727982 92.947170 23.241927 6587.5544 3.3488511e+09 0.12481976 0.033281202 92.991331 23.118283 6589.8051 3.1971204e+09 0.12245685 0.031448732 93.035488 22.994640 6592.0558 3.0347156e+09 0.12003568 0.028019322 93.079649 22.870991 6594.3065 2.8600749e+09 0.11783131 0.026004264 93.135070 22.724822 6596.5572 2.6817651e+09 0.11538795 0.025724740 93.190466 22.578703 6598.8079 2.5227223e+09 0.11364659 0.025021434 93.234623 22.455059 6601.0586 2.3945785e+09 0.11364791 0.027073301 93.278781 22.331415 6603.3093 2.2930028e+09 0.11249370 0.026480147 93.322944 22.207758 6605.5600 2.1939694e+09 0.11181642 0.027134874 93.367108 22.084096 6607.8107 2.0807871e+09 0.10989014 0.024106072 93.411875 21.949515 6610.0615 1.9625480e+09 0.10691940 0.024061697 93.457291 21.803182 6612.3122 1.8436206e+09 0.10479496 0.024087517 93.502081 21.668183 6614.5629 1.7370242e+09 0.10376733 0.023552699 93.546245 21.544521 6616.8136 1.6607034e+09 0.10218047 0.023409989 93.590408 21.420864 6619.0643 1.5951908e+09 0.10122851 0.024541424 93.634565 21.297220 6621.3150 1.5295069e+09 0.10010881 0.024985044 93.678723 21.173576 6623.5657 1.4550800e+09 0.098174080 0.024701405 93.729008 21.032776 6625.8164 1.3705150e+09 0.096772851 0.026371811 93.779471 20.891473 6628.0671 1.2972469e+09 0.094790734 0.025730339 93.819331 20.767639 6630.3178 1.2363206e+09 0.092972654 0.025929085 93.859075 20.643997 6632.5685 1.1856173e+09 0.090939345 0.026100515 93.902019 20.520353 6634.8192 1.1360100e+09 0.089120310 0.026386601 93.946177 20.396709 6637.0699 1.0804911e+09 0.087445974 0.026127164 93.993240 20.264930 6639.3206 1.0238897e+09 0.086712598 0.025513473 94.043707 20.123620 6641.5713 9.6919864e+08 0.087465066 0.025150240 94.089038 19.990772 6643.8220 9.2416585e+08 0.086795300 0.025316737 94.128782 19.867129 6646.0728 8.8449587e+08 0.085922863 0.025957806 94.169473 19.743485 6648.3235 8.4581007e+08 0.084989965 0.027180808 94.213631 19.619841 6650.5742 8.1175309e+08 0.084425867 0.026386679 94.257789 19.496197 6652.8249 7.7014927e+08 0.084122847 0.027477476 94.303145 19.355773 6655.0756 7.3187310e+08 0.082995270 0.027641444 94.348564 19.214463 6657.3263 6.9394663e+08 0.081178178 0.029279588 94.388487 19.090262 6659.5770 6.5729633e+08 0.079741837 0.031714238 94.428232 18.966619 6661.8277 6.3319504e+08 0.078219000 0.032956512 94.467974 18.842975 6664.0784 6.0671442e+08 0.076805363 0.031919227 94.507715 18.719330 6666.3291 5.8258161e+08 0.076773998 0.026972726 94.552168 18.587926 6668.5798 5.5430663e+08 0.075687109 0.027983867 94.602635 18.446617 6670.8305 5.2685217e+08 0.075468568 0.026943867 94.648193 18.313395 6673.0812 4.9949731e+08 0.075025382 0.027580694 94.687937 18.189751 6675.3319 4.7620117e+08 0.073118724 0.030434125 94.727682 18.066104 6677.5826 4.6000988e+08 0.071232691 0.031529940 94.767429 17.942441 6679.8333 4.4671316e+08 0.071038292 0.029579135 94.807176 17.818779 6682.0840 4.3006919e+08 0.071664449 0.030488759 94.852189 17.683433 6684.3348 4.0826280e+08 0.071699454 0.032671079 94.897604 17.547194 6686.5855 3.8859220e+08 0.070495699 0.034101714 94.937650 17.422867 6688.8362 3.7531286e+08 0.067582018 0.033978206 94.977397 17.299204 6691.0869 3.6405071e+08 0.066556943 0.032980767 95.021021 17.163488 6693.3376 3.4873043e+08 0.065774462 0.031488278 95.066444 17.022178 6695.5883 3.3179441e+08 0.065497699 0.029751413 95.107881 16.896359 6697.8390 3.1641265e+08 0.064892193 0.030197441 95.147622 16.777131 6700.0897 3.0519731e+08 0.063372083 0.030734249 95.189846 16.648255 6702.3404 2.8823168e+08 0.062119018 0.033148543 95.235269 16.506945 6704.5911 2.7310594e+08 0.062607069 0.036467819 95.276092 16.373683 6706.8418 2.6001088e+08 0.062495007 0.039911517 95.311416 16.250039 6709.0925 2.4601151e+08 0.062054399 0.041073695 95.348668 16.123986 6711.3432 2.3609708e+08 0.060337831 0.041082731 95.394091 15.987722 6713.5939 2.2636226e+08 0.058322192 0.045834752 95.438324 15.854102 6715.8446 2.2042023e+08 0.056572909 0.048242461 95.478065 15.730458 6718.0953 2.1264028e+08 0.054570074 0.049960907 95.517806 15.606815 6720.3461 2.0314430e+08 0.053913041 0.050379670 95.557550 15.487344 6722.5968 1.9302157e+08 0.053697871 0.049867457 95.597295 15.368116 6724.8475 1.8576234e+08 0.049966769 0.042849798 95.637468 15.233865 6727.0982 1.8244784e+08 0.048139158 0.040829596 95.677843 15.092556 6729.3489 1.7689536e+08 0.047796664 0.040812893 95.721744 14.954773 6731.5996 1.6632601e+08 0.046257595 0.042943303 95.767163 14.818509 6733.8503 1.5765639e+08 0.045389682 0.048540767 95.805342 14.694467 6736.1010 1.5044739e+08 0.047333185 0.050736819 95.840670 14.575239 6738.3517 1.4775303e+08 0.048773861 0.059257360 95.880568 14.446011 6740.6024 1.4412276e+08 0.048424124 0.065079469 95.925987 14.304701 6742.8531 1.3359825e+08 0.045639212 0.070689519 95.966649 14.173800 6745.1038 1.2968883e+08 0.042502267 0.078610531 96.001977 14.054572 6747.3545 1.1935989e+08 0.038586950 0.067239112 96.039392 13.931822 6749.6052 1.1557107e+08 0.037496944 0.072112221 96.084815 13.795559 6751.8559 1.1022709e+08 0.034548441 0.074073565 96.129100 13.658158 6754.1066 1.0654834e+08 0.033458139 0.076041977 96.169471 13.516849 6756.3573 1.0748984e+08 0.030881052 0.075086419 96.209689 13.380924 6758.6081 1.0383794e+08 0.031244885 0.074991134 96.249434 13.261696 6760.8588 95846890. 0.032191523 0.077698887 96.289178 13.142468 6763.1095 89920912. 0.037947016 0.076771146 96.329541 13.006557 6765.3602 87422066. 0.040538363 0.079596944 96.369916 12.870293 6767.6109 84587405. 0.039186014 0.081291740 96.410287 12.734031 6769.8616 82623795. 0.034473587 0.086543982 96.450576 12.598047 6772.1123 74858026. 0.031031079 0.092002934 96.485903 12.478819 6774.3630 72166861. 0.027193342 0.097461886 96.521231 12.359591 6776.6137 72296080. 0.023100953 0.10292084 96.564148 12.227556 6778.8644 72633092. 0.019006443 0.10837979 96.609571 12.091293 6781.1151 71512216. 0.015067617 0.11383874 96.651103 11.951142 6783.3658 66179353. 0.011592469 0.11929769 96.691475 11.809830 6785.6165 61752621. 0.0081773387 0.12475664 96.731849 11.672502 6787.8672 56240838. 0.0051368694 0.13021560 96.772224 11.536239 6790.1179 54661132. 0.0017954892 0.13567455 96.812599 11.399976 6792.3686 50352940. -0.00068655371 0.14113350 96.852974 11.263712 6794.6194 49577586. -0.0032621770 0.14659245 96.893350 11.131618 6796.8701 51502181. -0.0054994820 0.15205140 96.933725 11.000401 6799.1208 48570574. -0.0041606372 0.15751035 96.974097 10.864923 6801.3715 46492544. 0.022009328 0.16296931 97.014468 10.728660 6803.6222 45233983. -0.0067905808 0.16842826 97.050486 10.607099 6805.8729 47950606. -0.063686140 0.17388721 97.085814 10.487870