# # 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 = 46.358006 km # Date (UTC) = 2012-02-02T10:40:09.013 # Date (julian) = 2455959.94454876 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.3221 3.1739300e+11 0.037173230 0.031475684 -28.919978 64.113630 6499.2997 2.5301862e+11 0.044885494 0.032072050 -29.352247 63.887151 6501.2774 2.0321130e+11 0.052626061 0.032668415 -29.734320 63.689608 6503.2551 1.6565727e+11 0.060448790 0.033264781 -30.208407 63.432850 6505.2328 1.3861359e+11 0.068553254 0.033861147 -30.646259 63.196672 6507.2105 1.1481866e+11 0.076720230 0.034457513 -30.987768 63.002633 6509.1882 9.6586030e+10 0.085194218 0.035053879 -31.425901 62.748199 6511.1659 8.3764516e+10 0.094302365 0.035650245 -31.763169 62.552113 6513.1435 7.3657195e+10 0.10399540 0.036246611 -32.086294 62.352838 6515.1212 6.5823579e+10 0.11432037 0.036842977 -32.445960 62.128804 6517.0989 5.8221154e+10 0.12494255 0.037439343 -32.825170 61.894281 6519.0766 5.1238007e+10 0.13591418 0.038035708 -33.141199 61.693591 6521.0543 4.6107453e+10 0.14759662 0.038632074 -33.443901 61.499553 6523.0320 4.2137283e+10 0.15694194 0.039187038 -33.746524 61.298985 6525.0097 3.8158640e+10 0.16436527 0.039781112 -34.099813 61.059601 6526.9873 3.4447228e+10 0.16982838 0.040703203 -34.434757 60.830428 6528.9650 3.1014844e+10 0.17358310 0.042208044 -34.724918 60.628669 6530.9427 2.8344758e+10 0.17719888 0.045148485 -35.004332 60.426872 6532.9204 2.6111576e+10 0.18077075 0.047453092 -35.283663 60.225131 6534.8981 2.4002746e+10 0.18141426 0.048195788 -35.563056 60.023349 6536.8758 2.2028804e+10 0.18022652 0.048574079 -35.839068 59.821550 6538.8535 1.9953895e+10 0.17860529 0.049572271 -36.109545 59.619761 6540.8311 1.8071308e+10 0.17700073 0.051246757 -36.373360 59.418019 6542.8088 1.6599555e+10 0.17503196 0.051309316 -36.591782 59.245643 6544.7865 1.5363132e+10 0.17327573 0.052282386 -36.814144 59.069462 6546.7642 1.4310566e+10 0.17108524 0.053093342 -37.070199 58.867724 6548.7419 1.3182302e+10 0.16897022 0.053889199 -37.326324 58.658462 6550.7196 1.2053238e+10 0.16743037 0.055165535 -37.577228 58.448901 6552.6973 1.1208811e+10 0.16601053 0.055411266 -37.804066 58.257880 6554.6749 1.0521878e+10 0.16392124 0.054846544 -37.996496 58.096489 6556.6526 9.9039843e+09 0.16153323 0.053917177 -38.226209 57.897819 6558.6303 9.2259092e+09 0.15903927 0.052702196 -38.463014 57.688288 6560.6080 8.5292090e+09 0.15642158 0.051726116 -38.686643 57.487023 6562.5857 7.9222431e+09 0.15384961 0.050322599 -38.872907 57.319384 6564.5634 7.4058326e+09 0.15102480 0.048516276 -39.086474 57.127173 6566.5411 6.9949426e+09 0.14836947 0.046876808 -39.303592 56.930104 6568.5187 6.5890533e+09 0.14599650 0.045294811 -39.483606 56.762505 6570.4964 6.1994677e+09 0.14386886 0.044711870 -39.689239 56.566090 6572.4741 5.8687446e+09 0.14127890 0.043958641 -39.889245 56.373226 6574.4518 5.5237386e+09 0.13810602 0.042638005 -40.063091 56.205587 6576.4295 5.2009395e+09 0.13499709 0.040877042 -40.271136 56.004977 6578.4072 4.9292029e+09 0.13186464 0.038006638 -40.463639 55.816363 6580.3849 4.6253712e+09 0.12936428 0.036165086 -40.631278 55.648724 6582.3625 4.3327643e+09 0.12743554 0.035195136 -40.836099 55.437007 6584.3402 4.0514214e+09 0.12555985 0.034330174 -41.016779 55.249497 6586.3179 3.7870400e+09 0.12377302 0.033167186 -41.178211 55.081860 6588.2956 3.5872566e+09 0.12228781 0.033281213 -41.339640 54.914221 6590.2733 3.3828759e+09 0.12027787 0.030553707 -41.513384 54.727809 6592.2510 3.1727457e+09 0.11809861 0.027829753 -41.704450 54.514991 6594.2287 2.9789958e+09 0.11590105 0.026047000 -41.865882 54.347352 6596.2063 2.8104973e+09 0.11328981 0.025726336 -42.021364 54.176740 6598.1840 2.6803656e+09 0.11138249 0.025319302 -42.170375 54.002893 6600.1617 2.5535364e+09 0.11057105 0.025322337 -42.324747 53.834471 6602.1394 2.4373657e+09 0.10967011 0.027397672 -42.478344 53.665264 6604.1171 2.3237238e+09 0.10794799 0.026140800 -42.627357 53.491417 6606.0948 2.1997621e+09 0.10731605 0.027333655 -42.795449 53.294473 6608.0725 2.0735887e+09 0.10495261 0.023730456 -42.961156 53.097723 6610.0501 1.9552646e+09 0.10195774 0.024050893 -43.103926 52.923917 6612.0278 1.8550768e+09 0.099387579 0.024299956 -43.246720 52.750078 6614.0055 1.7633232e+09 0.098069343 0.023936691 -43.389523 52.577079 6615.9832 1.6683700e+09 0.096244867 0.023281782 -43.532327 52.409442 6617.9609 1.5803794e+09 0.095288941 0.023757829 -43.671846 52.238559 6619.9386 1.5061644e+09 0.094190140 0.024752377 -43.808409 52.064751 6621.9163 1.4385590e+09 0.092737989 0.024785748 -43.945002 51.890907 6623.8939 1.3754633e+09 0.090883231 0.024823019 -44.081597 51.718950 6625.8716 1.3089997e+09 0.090055131 0.026437723 -44.218190 51.551311 6627.8493 1.2449797e+09 0.088637600 0.025644889 -44.350477 51.379364 6629.8270 1.1851970e+09 0.087656872 0.025959580 -44.480862 51.205520 6631.8047 1.1245926e+09 0.086229422 0.026012506 -44.611216 51.031713 6633.7824 1.0673435e+09 0.085102632 0.026288848 -44.741584 50.857887 6635.7601 1.0051742e+09 0.083995512 0.026513770 -44.871970 50.684040 6637.7377 9.5719961e+08 0.083114229 0.025800086 -44.979167 50.539623 6639.7154 9.2241384e+08 0.082759091 0.025372363 -45.082644 50.399930 6641.6931 8.9553108e+08 0.082960466 0.025150654 -45.205324 50.228548 6643.6708 8.6654649e+08 0.082107056 0.025293902 -45.329482 50.054728 6645.6485 8.2410798e+08 0.081240280 0.025755478 -45.453659 49.880881 6647.6262 7.8594763e+08 0.080267500 0.026767464 -45.577835 49.707033 6649.6039 7.4822861e+08 0.079372056 0.026801295 -45.701409 49.533184 6651.5815 7.1568238e+08 0.078864896 0.026929837 -45.819379 49.359337 6653.5592 6.7992881e+08 0.078342033 0.027811186 -45.937334 49.185510 6655.5369 6.4279025e+08 0.076919467 0.027832072 -46.055273 49.011705 6657.5146 6.1744502e+08 0.075279240 0.029498035 -46.156027 48.867752 6659.4923 5.9532844e+08 0.073753221 0.031731906 -46.254329 48.728058 6661.4700 5.7782168e+08 0.072274653 0.032774318 -46.371164 48.556179 6663.4477 5.5730072e+08 0.070999539 0.032359155 -46.487065 48.382344 6665.4253 5.2859732e+08 0.070766326 0.027850185 -46.598799 48.208537 6667.4030 4.9899577e+08 0.070418317 0.027251498 -46.710551 48.034701 6669.3807 4.6796788e+08 0.069723833 0.027964678 -46.820258 47.864046 6671.3584 4.4906030e+08 0.069917318 0.026870456 -46.913387 47.719177 6673.3361 4.3427139e+08 0.069598302 0.027961864 -47.008719 47.569170 6675.3138 4.1829941e+08 0.068106368 0.030399352 -47.114268 47.395323 6677.2915 3.9998755e+08 0.066552098 0.031943875 -47.223322 47.221500 6679.2691 3.7731328e+08 0.066344610 0.030045360 -47.335054 47.047694 6681.2468 3.6116074e+08 0.067407053 0.029846725 -47.424061 46.901545 6683.2245 3.5118696e+08 0.067965178 0.031517615 -47.512419 46.756012 6685.2022 3.3910775e+08 0.067825425 0.032918415 -47.617970 46.582165 6687.1799 3.2128917e+08 0.066251571 0.034242574 -47.723521 46.408317 6689.1576 3.0331277e+08 0.063864023 0.033874181 -47.829071 46.234469 6691.1353 2.8804610e+08 0.063156970 0.032969350 -47.916354 46.083878 6693.1129 2.7842806e+08 0.062471794 0.031565341 -47.999118 45.939038 6695.0906 2.6916020e+08 0.062035126 0.029842826 -48.101675 45.769004 6697.0683 2.5781091e+08 0.061587725 0.030099911 -48.201353 45.602633 6699.0460 2.4531667e+08 0.060463551 0.031547983 -48.284134 45.457766 6701.0237 2.3443638e+08 0.058861447 0.031444206 -48.372299 45.303477 6703.0014 2.2730840e+08 0.058669932 0.033678677 -48.471641 45.129630 6704.9791 2.1926898e+08 0.058854792 0.036658324 -48.566531 44.955811 6706.9567 2.1116360e+08 0.058546078 0.040111548 -48.658573 44.785536 6708.9344 2.0261870e+08 0.058119874 0.041061143 -48.741354 44.645841 6710.9121 1.9301493e+08 0.056738164 0.040675031 -48.825903 44.500315 6712.8898 1.8333373e+08 0.055102745 0.043482028 -48.919035 44.326468 6714.8675 1.7305150e+08 0.053454412 0.047368626 -49.003471 44.168854 6716.8452 1.6417881e+08 0.051814699 0.049646226 -49.081079 44.023987 6718.8229 1.5636952e+08 0.049862966 0.051093959 -49.168411 43.860965 6720.8005 1.5185758e+08 0.050250819 0.050327009 -49.261265 43.687633 6722.7782 1.4672404e+08 0.049700105 0.049643106 -49.338875 43.542764 6724.7559 1.3930612e+08 0.046337735 0.043614256 -49.417780 43.395476 6726.7336 1.3125902e+08 0.044455959 0.040957984 -49.510914 43.221629 6728.7113 1.2339476e+08 0.044328864 0.040636231 -49.594258 43.061487 6730.6890 1.1721839e+08 0.042967022 0.041323573 -49.666691 42.916619 6732.6667 1.1018195e+08 0.041943539 0.043862939 -49.750292 42.756120 6734.6443 1.0282058e+08 0.041871652 0.049314831 -49.843402 42.582313 6736.6220 93629272. 0.043721351 0.052706638 -49.930766 42.408469 6738.5997 87197556. 0.044831246 0.060622818 -50.013075 42.243853 6740.5774 82405720. 0.044370437 0.065036758 -50.085509 42.098984 6742.5551 79500898. 0.041845806 0.069963333 -50.163531 41.942938 6744.5328 74337538. 0.038347976 0.078205501 -50.250455 41.769091 6746.5105 67517803. 0.035882960 0.073052592 -50.322137 41.617708 6748.4881 63861887. 0.034269214 0.069585059 -50.389397 41.472841 6750.4658 60468561. 0.031826400 0.072799560 -50.473203 41.303596 6752.4435 60812392. 0.029324023 0.073621242 -50.555561 41.136484 6754.4212 61994416. 0.028259531 0.075536122 -50.622819 40.991617 6756.3989 63602399. 0.026040946 0.075193312 -50.694095 40.839952 6758.3766 67211793. 0.026232513 0.074501642 -50.774812 40.672311 6760.3543 69613608. 0.026888743 0.076736832 -50.849830 40.520338 6762.3319 68669759. 0.031264960 0.077515387 -50.922263 40.375471 6764.3096 67899132. 0.034182379 0.079498119 -50.996249 40.208752 6766.2873 63262384. 0.035679166 0.080363667 -51.069697 40.039118 6768.2650 61517176. 0.032738712 0.081809574 -51.136955 39.894249 6770.2427 61275398. 0.028892345 0.087468331 -51.207058 39.743256 6772.2204 60052989. 0.025625210 0.092265088 -51.287773 39.569409 6774.1981 61901976. 0.022261636 0.097061846 -51.360406 39.412972 6776.1757 62663883. 0.019002778 0.10185860 -51.427666 39.268106 6778.1534 60260001. 0.016075374 0.10665536 -51.499754 39.103907 6780.1311 58314343. 0.013358741 0.11145212 -51.573536 38.931747 6782.1088 51751929. 0.015125540 0.11624888 -51.635622 38.786880 6784.0865 46775986. 0.0081329212 0.12104563 -51.699249 38.639186 6786.0642 45688807. -0.0049720441 0.12584239 -51.773757 38.471547