# # 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 = 49.357754 km # Date (UTC) = 2014-11-25T09:55:39.115 # Date (julian) = 2456986.91364716 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.9718 9.8982904e+10 0.032318678 0.029259222 -22.594134 59.572170 6492.1940 8.9444349e+10 0.039221420 0.029929335 -22.772895 59.476250 6494.4163 8.0906335e+10 0.045864297 0.030599448 -22.951656 59.380331 6496.6385 7.4265952e+10 0.052101343 0.031269561 -23.130165 59.284157 6498.8608 6.8742280e+10 0.058018364 0.031939675 -23.304591 59.183862 6501.0830 6.3348023e+10 0.063683960 0.032609788 -23.479017 59.083567 6503.3053 5.7802602e+10 0.069010772 0.033279901 -23.668675 58.976133 6505.5275 5.2540446e+10 0.073936730 0.033950014 -23.863011 58.866507 6507.7498 4.7778980e+10 0.078595379 0.034620127 -24.035620 58.763967 6509.9720 4.3953018e+10 0.083426661 0.035290241 -24.201301 58.663687 6512.1943 4.0753481e+10 0.088917357 0.035960354 -24.366982 58.565432 6514.4165 3.7843446e+10 0.095473302 0.036630467 -24.532662 58.469512 6516.6388 3.5149274e+10 0.10350295 0.037300580 -24.698342 58.372845 6518.8610 3.2562892e+10 0.11327800 0.037970693 -24.864022 58.272565 6521.0832 3.0245342e+10 0.12517335 0.038640807 -25.029703 58.172285 6523.3055 2.8068720e+10 0.13542354 0.039254829 -25.191557 58.072005 6525.5277 2.6058892e+10 0.14460501 0.039721984 -25.352878 57.971725 6527.7500 2.4147064e+10 0.15471711 0.041260976 -25.511653 57.871445 6529.9722 2.2340803e+10 0.16392800 0.043784481 -25.668614 57.771164 6532.1945 2.0731705e+10 0.17001952 0.046846668 -25.825574 57.670884 6534.4167 1.9298033e+10 0.17216673 0.048061136 -25.982534 57.570604 6536.6390 1.7952129e+10 0.17136336 0.048362221 -26.139557 57.470272 6538.8612 1.6552309e+10 0.17023030 0.049576058 -26.313842 57.355762 6541.0835 1.5194576e+10 0.16857875 0.051299454 -26.488247 57.241153 6543.3057 1.3956877e+10 0.16677807 0.051462135 -26.641067 57.140728 6545.5280 1.2940855e+10 0.16504100 0.052460297 -26.793667 57.040446 6547.7502 1.2096131e+10 0.16377888 0.053572664 -26.943231 56.937130 6549.9725 1.1291187e+10 0.16278800 0.054957315 -27.091471 56.832491 6552.1947 1.0543383e+10 0.16146373 0.055537753 -27.239721 56.729601 6554.4170 9.8576105e+09 0.15981497 0.054841130 -27.387984 56.629306 6556.6392 9.2266530e+09 0.15832343 0.053919147 -27.535766 56.529013 6558.8615 8.6346006e+09 0.15641198 0.052505221 -27.679646 56.428733 6561.0837 8.0874321e+09 0.15429289 0.051331423 -27.823527 56.328453 6563.3060 7.5712091e+09 0.15255277 0.049574426 -27.967407 56.224614 6565.5282 7.0912680e+09 0.15076516 0.047718594 -28.111288 56.119973 6567.7505 6.6425188e+09 0.14943911 0.045982645 -28.255168 56.017610 6569.9727 6.2299517e+09 0.14826725 0.044915733 -28.399048 55.917330 6572.1950 5.8578614e+09 0.14662288 0.044118502 -28.540933 55.816052 6574.4172 5.5038685e+09 0.14436516 0.042654617 -28.676093 55.711411 6576.6395 5.1767775e+09 0.14196789 0.040635355 -28.811254 55.606770 6578.8617 4.8630916e+09 0.13892645 0.037288867 -28.950492 55.502130 6581.0840 4.5669501e+09 0.13646942 0.035571184 -29.090012 55.397491 6583.3062 4.2886497e+09 0.13476488 0.034866676 -29.226734 55.295649 6585.5285 4.0269967e+09 0.13313588 0.033548281 -29.361895 55.195369 6587.7507 3.7843251e+09 0.13196230 0.033324698 -29.495538 55.093571 6589.9730 3.5582318e+09 0.13040707 0.031115717 -29.626338 54.988930 6592.1952 3.3627074e+09 0.12827875 0.027883921 -29.757138 54.884289 6594.4175 3.1813473e+09 0.12621323 0.025943361 -29.887938 54.779650 6596.6397 3.0155048e+09 0.12384440 0.025724365 -30.018738 54.675010 6598.8620 2.8589094e+09 0.12212233 0.024995639 -30.149554 54.570358 6601.0842 2.7076587e+09 0.12223528 0.027085344 -30.280374 54.465701 6603.3065 2.5662224e+09 0.12123859 0.026481856 -30.409146 54.361051 6605.5287 2.4378148e+09 0.12062009 0.027108580 -30.535586 54.256411 6607.7509 2.3136371e+09 0.11871062 0.024224156 -30.662025 54.152529 6609.9732 2.2098767e+09 0.11555050 0.023995017 -30.788466 54.052249 6612.1954 2.1161992e+09 0.11294438 0.024174722 -30.914907 53.951969 6614.4177 2.0099930e+09 0.11166831 0.023652718 -31.052868 53.834684 6616.6399 1.9044376e+09 0.10993095 0.023382738 -31.192391 53.715093 6618.8622 1.7936352e+09 0.10894891 0.024421853 -31.316673 53.608566 6621.0844 1.6945842e+09 0.10776883 0.025061458 -31.438753 53.503925 6623.3067 1.6095255e+09 0.10568825 0.024605449 -31.560834 53.396754 6625.5289 1.5312944e+09 0.10375918 0.026028786 -31.682915 53.287754 6627.7512 1.4628104e+09 0.10130402 0.025606982 -31.803746 53.180004 6629.9734 1.3983657e+09 0.099614466 0.025933105 -31.921466 53.075364 6632.1957 1.3309621e+09 0.097743629 0.026055809 -32.039186 52.970725 6634.4179 1.2669155e+09 0.096397271 0.026357329 -32.156907 52.866084 6636.6402 1.2057034e+09 0.095068666 0.026301144 -32.274627 52.761443 6638.8624 1.1491446e+09 0.094068119 0.025634069 -32.392348 52.656803 6641.0847 1.0972501e+09 0.094734535 0.025148588 -32.510069 52.552163 6643.3069 1.0410750e+09 0.094240705 0.025238961 -32.626020 52.447523 6645.5292 9.9555511e+08 0.093151006 0.025699584 -32.739379 52.342882 6647.7514 9.4833909e+08 0.092040485 0.026833409 -32.852740 52.238240 6649.9737 9.0244747e+08 0.091185403 0.026291526 -32.966117 52.133583 6652.1959 8.5990782e+08 0.090516339 0.027304427 -33.079493 52.028927 6654.4182 8.2023443e+08 0.089507916 0.027858081 -33.189285 51.920712 6656.6404 7.8553482e+08 0.087413791 0.028585510 -33.298285 51.811712 6658.8627 7.5283147e+08 0.085574666 0.031591039 -33.407285 51.705004 6661.0849 7.2384152e+08 0.083921410 0.032578200 -33.516285 51.600364 6663.3072 6.8980370e+08 0.082422053 0.032398089 -33.628899 51.492256 6665.5294 6.5989078e+08 0.081750368 0.027679666 -33.753474 51.372663 6667.7517 6.2546236e+08 0.080899867 0.027379557 -33.874542 51.255455 6669.9739 5.9480800e+08 0.079973994 0.027355427 -33.983542 51.146455 6672.1962 5.6866968e+08 0.079374593 0.026993298 -34.092542 51.037455 6674.4184 5.3973501e+08 0.078016863 0.029307747 -34.197481 50.932517 6676.6407 5.1350921e+08 0.075461038 0.032126625 -34.302122 50.827878 6678.8629 4.8815073e+08 0.074493671 0.030359465 -34.406763 50.723238 6681.0852 4.6996513e+08 0.075407714 0.029722689 -34.511404 50.618597 6683.3074 4.5444428e+08 0.075956527 0.031639086 -34.614543 50.512454 6685.5297 4.4156443e+08 0.075627365 0.033264282 -34.714824 50.403454 6687.7519 4.2263562e+08 0.073527935 0.033923557 -34.816087 50.293914 6689.9742 4.0170484e+08 0.071547065 0.033139132 -34.935677 50.174324 6692.1964 3.8140157e+08 0.070603373 0.032537262 -35.054417 50.055200 6694.4186 3.6366302e+08 0.069879689 0.030674269 -35.154696 49.946200 6696.6409 3.4653182e+08 0.069652853 0.029942065 -35.254976 49.837200 6698.8631 3.3244110e+08 0.068474568 0.031402584 -35.351985 49.731471 6701.0854 3.1706983e+08 0.066685263 0.031534744 -35.447905 49.626830 6703.3076 3.0296903e+08 0.066527687 0.034445056 -35.545818 49.520198 6705.5299 2.9247190e+08 0.066572774 0.037610647 -35.646098 49.411197 6707.7521 2.8091718e+08 0.066197759 0.040079083 -35.747904 49.300467 6709.9744 2.7208292e+08 0.065034005 0.040512784 -35.857531 49.180876 6712.1966 2.5975788e+08 0.062818803 0.042195050 -35.965015 49.062940 6714.4189 2.4599949e+08 0.060690181 0.047334900 -36.060948 48.953924 6716.6411 2.3162675e+08 0.058760036 0.049345694 -36.156881 48.844907 6718.8634 2.2028771e+08 0.056269993 0.051157069 -36.249041 48.739668 6721.0856 2.1088127e+08 0.056444995 0.050329700 -36.340602 48.635027 6723.3079 2.0277579e+08 0.054963212 0.049540655 -36.442454 48.519030 6725.5301 1.9582386e+08 0.050562838 0.041244873 -36.552078 48.394456 6727.7524 1.8779147e+08 0.049317632 0.039958002 -36.651535 48.281102 6729.9746 1.7878383e+08 0.047987319 0.040395813 -36.743096 48.176461 6732.1969 1.7014017e+08 0.046213337 0.043776453 -36.838180 48.066452 6734.4191 1.6361894e+08 0.045445894 0.049328382 -36.942823 47.941877 6736.6414 1.5751962e+08 0.046991405 0.052779758 -37.042888 47.822534 6738.8636 1.5070456e+08 0.047633423 0.062075731 -37.130088 47.717895 6741.0859 1.4509737e+08 0.046159480 0.066003600 -37.217289 47.613256 6743.3081 1.3973462e+08 0.041822026 0.073126010 -37.321388 47.489301 6745.5304 1.3518186e+08 0.038907588 0.078789849 -37.426030 47.364727 6747.7526 1.2741136e+08 0.034222558 0.067102064 -37.513892 47.255136 6749.9749 1.2035066e+08 0.031256445 0.072011014 -37.601093 47.146136 6752.1971 1.1563315e+08 0.027951257 0.073906378 -37.696622 47.030055 6754.4194 1.1155845e+08 0.026137831 0.075539082 -37.796282 46.910463 6756.6416 1.0717148e+08 0.022906497 0.075817872 -37.884813 46.797879 6758.8639 1.0055702e+08 0.022837363 0.075532071 -37.967653 46.688878 6761.0861 95415286. 0.022885503 0.077975339 -38.056684 46.575979 6763.3084 91088853. 0.027570529 0.077376877 -38.156344 46.456389 6765.5306 87213198. 0.029219165 0.079628057 -38.249927 46.340624 6767.7529 83656720. 0.026649179 0.081132762 -38.332767 46.231624 6769.9751 80082901. 0.021230262 0.086819319 -38.416407 46.121570 6772.1974 78539686. 0.016689502 0.092209249 -38.511083 45.996996 6774.4196 75301197. 0.011917229 0.097599179 -38.605759 45.872725 6776.6419 73030211. 0.0071014819 0.10298911 -38.700437 45.753133 6778.8641 66368788. 0.0013695508 0.10837904 -38.794240 45.634112 6781.0863 61176197. -0.0049587461 0.11376897 -38.872720 45.525112 6783.3086 59544331. -0.011896354 0.11915890 -38.951201 45.416111 6785.5308 57105632. -0.023062958 0.12454883 -39.038209 45.295267 6787.7531 58046955. -0.066468806 0.12993876 -39.127902 45.170693 6789.9753 54139759. -0.036984030 0.13532869 -39.221350 45.049875 6792.1976 50358105. 0.040047040 0.14071862 -39.316026 44.930284