# # 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 = 42.314225 km # Date (UTC) = 2015-12-18T08:47:36.936 # Date (julian) = 2457374.86639972 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6483.8302 2.0455935e+11 0.017783962 0.027407263 -10.602096 51.325235 6485.6921 1.6895854e+11 0.023966884 0.027968711 -10.696260 51.250553 6487.5540 1.4589804e+11 0.029335202 0.028530158 -10.789379 51.174819 6489.4159 1.3124085e+11 0.033881771 0.029091606 -10.880309 51.096878 6491.2778 1.1689640e+11 0.038329488 0.029653054 -10.971238 51.018938 6493.1397 1.0602988e+11 0.042300200 0.030214501 -11.062165 50.941001 6495.0016 9.4973964e+10 0.046124490 0.030775949 -11.153082 50.863072 6496.8635 8.6298933e+10 0.049519227 0.031337397 -11.243999 50.785144 6498.7254 7.8942938e+10 0.052505354 0.031898844 -11.334917 50.707748 6500.5872 7.2000940e+10 0.054998647 0.032460292 -11.425834 50.633066 6502.4491 6.5845507e+10 0.057034455 0.033021740 -11.516752 50.558384 6504.3110 6.0214324e+10 0.058968125 0.033583187 -11.607669 50.483428 6506.1729 5.5719730e+10 0.061709583 0.034144635 -11.698587 50.405498 6508.0348 5.1525559e+10 0.066033447 0.034706083 -11.789504 50.327569 6509.8967 4.7776137e+10 0.072839219 0.035267531 -11.880389 50.249639 6511.7586 4.4321032e+10 0.082699937 0.035828978 -11.968088 50.171699 6513.6205 4.0977619e+10 0.095775509 0.036390426 -12.055770 50.093759 6515.4824 3.7979239e+10 0.11223188 0.036951874 -12.143452 50.015819 6517.3442 3.5283903e+10 0.12902812 0.037513321 -12.223010 49.945101 6519.2061 3.3042269e+10 0.14393198 0.038074769 -12.301912 49.874966 6521.0680 3.1130782e+10 0.15584686 0.038636217 -12.380815 49.804831 6522.9299 2.9288139e+10 0.16273014 0.039160760 -12.462496 49.732408 6524.7918 2.7454416e+10 0.16748231 0.039708252 -12.546920 49.657726 6526.6537 2.5560880e+10 0.17026903 0.040353407 -12.631343 49.583044 6528.5156 2.3693779e+10 0.17268636 0.041851495 -12.715766 49.506986 6530.3775 2.1906640e+10 0.17509863 0.044357148 -12.800189 49.429056 6532.2394 2.0208281e+10 0.17701579 0.046884151 -12.884613 49.351126 6534.1012 1.8641376e+10 0.17696263 0.047972880 -12.969040 49.273193 6535.9631 1.7216032e+10 0.17578793 0.047806492 -13.053474 49.195254 6537.8250 1.5953707e+10 0.17663697 0.049074189 -13.137909 49.117316 6539.6869 1.4811344e+10 0.17631846 0.050475121 -13.222340 49.039379 6541.5488 1.3795483e+10 0.17468590 0.051148556 -13.306764 48.961449 6543.4107 1.2840213e+10 0.17335587 0.051489682 -13.391187 48.883519 6545.2726 1.1975958e+10 0.17234000 0.052458009 -13.475010 48.805590 6547.1345 1.1144651e+10 0.17104486 0.053338501 -13.556187 48.727661 6548.9964 1.0366255e+10 0.16902952 0.053965193 -13.637363 48.649733 6550.8582 9.6614593e+09 0.16769787 0.055200258 -13.718540 48.571803 6552.7201 9.0011337e+09 0.16646650 0.055405508 -13.799727 48.493863 6554.5820 8.4061930e+09 0.16427864 0.054844594 -13.880914 48.415923 6556.4439 7.8490609e+09 0.16157816 0.053947862 -13.962017 48.337983 6558.3058 7.3335977e+09 0.15902688 0.052978721 -14.039946 48.260053 6560.1677 6.8618573e+09 0.15642552 0.052123111 -14.117875 48.182124 6562.0296 6.4332951e+09 0.15372313 0.050851754 -14.195804 48.104194 6563.8915 6.0385456e+09 0.15099275 0.048897139 -14.276806 48.026265 6565.7534 5.6860594e+09 0.14909288 0.047462946 -14.357982 47.948337 6567.6152 5.3541128e+09 0.14768017 0.046096978 -14.439159 47.870408 6569.4771 5.0389292e+09 0.14607280 0.044883479 -14.517521 47.792479 6571.3390 4.7354930e+09 0.14461016 0.044410680 -14.595450 47.714549 6573.2009 4.4594454e+09 0.14299818 0.043496251 -14.673379 47.636619 6575.0628 4.2150504e+09 0.14124213 0.042311694 -14.745184 47.564815 6576.9247 4.0061611e+09 0.13899056 0.040307050 -14.815328 47.494672 6578.7866 3.8307190e+09 0.13626053 0.037407507 -14.885472 47.424529 6580.6485 3.6648462e+09 0.13399479 0.035921471 -14.957273 47.351542 6582.5104 3.5032089e+09 0.13196599 0.035154911 -15.031955 47.273613 6584.3723 3.3373134e+09 0.12968701 0.034312732 -15.106637 47.195683 6586.2341 3.1709328e+09 0.12742645 0.033168269 -15.181319 47.117754 6588.0960 3.0150845e+09 0.12565096 0.033347862 -15.256001 47.039825 6589.9579 2.8791318e+09 0.12323331 0.031145556 -15.330684 46.961896 6591.8198 2.7486551e+09 0.12029083 0.028276854 -15.405366 46.883967 6593.6817 2.6237006e+09 0.11754959 0.026468451 -15.480048 46.806038 6595.5436 2.5022359e+09 0.11451615 0.025679942 -15.554730 46.728108 6597.4055 2.3735339e+09 0.11179239 0.025594775 -15.629413 46.649768 6599.2674 2.2541824e+09 0.10956650 0.024945811 -15.704106 46.568581 6601.1293 2.1407433e+09 0.10890337 0.027106560 -15.778798 46.487394 6602.9911 2.0307521e+09 0.10773450 0.026670834 -15.853338 46.406359 6604.8530 1.9378828e+09 0.10690922 0.026577777 -15.924773 46.328429 6606.7149 1.8409336e+09 0.10609852 0.026219278 -15.996208 46.250499 6608.5768 1.7512939e+09 0.10374954 0.023717121 -16.067643 46.172570 6610.4387 1.6638529e+09 0.10132434 0.024422143 -16.139078 46.094641 6612.3006 1.5816553e+09 0.099770446 0.024096166 -16.210514 46.016712 6614.1625 1.5068870e+09 0.098892376 0.023828554 -16.281949 45.938784 6616.0244 1.4362838e+09 0.097514411 0.023286123 -16.353384 45.860854 6617.8863 1.3714696e+09 0.096996666 0.023733083 -16.424819 45.782925 6619.7481 1.3027148e+09 0.096380860 0.024706428 -16.496254 45.704995 6621.6100 1.2444922e+09 0.095326391 0.024887250 -16.567696 45.627058 6623.4719 1.1877280e+09 0.093745364 0.024666664 -16.639141 45.549119 6625.3338 1.1354765e+09 0.092570145 0.025795937 -16.710585 45.471180 6627.1957 1.0890856e+09 0.090535103 0.025392405 -16.779659 45.393247 6629.0576 1.0425617e+09 0.089385396 0.026098693 -16.847847 45.315318 6630.9195 1.0018985e+09 0.087647075 0.025930568 -16.916035 45.237388 6632.7814 9.5688866e+08 0.086289342 0.026126037 -16.989752 45.153141 6634.6433 9.0597621e+08 0.084820103 0.026373765 -17.066464 45.065470 6636.5051 8.5566461e+08 0.083295955 0.026353586 -17.143176 44.977799 6638.3670 8.0698454e+08 0.082226673 0.025655652 -17.212123 44.896045 6640.2289 7.6833292e+08 0.082117363 0.025242643 -17.280312 44.814868 6642.0908 7.3054834e+08 0.081999469 0.025155412 -17.348501 44.733692 6643.9527 6.9631183e+08 0.081044796 0.025336464 -17.416696 44.655206 6645.8146 6.6617556e+08 0.080344094 0.025833288 -17.484893 44.577266 6647.6765 6.3531411e+08 0.079655630 0.026793947 -17.553089 44.499326 6649.5384 6.0715752e+08 0.078936712 0.026891579 -17.621280 44.421394 6651.4003 5.8200637e+08 0.078626801 0.026790902 -17.689468 44.343466 6653.2621 5.5976535e+08 0.078306035 0.027659502 -17.757656 44.265538 6655.1240 5.3640410e+08 0.077222627 0.027661466 -17.823661 44.187608 6656.9859 5.1278621e+08 0.075570731 0.028888753 -17.888602 44.109679 6658.8478 4.9056987e+08 0.074236436 0.031564685 -17.953542 44.031749 6660.7097 4.7109236e+08 0.073088464 0.032271079 -18.018483 43.953819 6662.5716 4.5314478e+08 0.071896826 0.032723577 -18.083425 43.875889 6664.4335 4.3399273e+08 0.070867753 0.030620018 -18.148367 43.797959 6666.2954 4.1464835e+08 0.070697968 0.026966151 -18.213312 43.720024 6668.1573 3.9688628e+08 0.069823134 0.027609933 -18.278261 43.642086 6670.0191 3.8490077e+08 0.069150046 0.027319764 -18.343210 43.564147 6671.8810 3.7099430e+08 0.068656571 0.026877904 -18.410092 43.480404 6673.7429 3.5640716e+08 0.067764509 0.028570310 -18.479499 43.389080 6675.6048 3.4006728e+08 0.065700735 0.030956789 -18.548906 43.297755 6677.4667 3.2129511e+08 0.064040456 0.031694757 -18.615205 43.215754 6679.3286 3.0442208e+08 0.063355691 0.029996241 -18.680146 43.137825 6681.1905 2.9332170e+08 0.063844547 0.029803489 -18.745087 43.059895 6683.0524 2.8223230e+08 0.064017367 0.031265323 -18.808027 42.981966 6684.9143 2.7034118e+08 0.063571001 0.032700486 -18.869720 42.904037 6686.7761 2.5866654e+08 0.061978049 0.034212657 -18.931414 42.826108 6688.6380 2.4567867e+08 0.059351594 0.033932470 -18.993108 42.748179 6690.4999 2.3778071e+08 0.058008725 0.033058572 -19.054802 42.670249 6692.3618 2.2971844e+08 0.056916564 0.032345180 -19.116496 42.592320 6694.2237 2.2104747e+08 0.055854282 0.030947500 -19.181719 42.509933 6696.0856 2.1165437e+08 0.055466069 0.029711346 -19.251137 42.422249 6697.9475 2.0397991e+08 0.054522184 0.030211170 -19.320554 42.334565 6699.8094 1.9502690e+08 0.052881927 0.030843619 -19.382074 42.251565 6701.6713 1.8633932e+08 0.051055839 0.032394368 -19.440521 42.170389 6703.5331 1.8021078e+08 0.051033771 0.035009331 -19.498968 42.089213 6705.3950 1.7184936e+08 0.050913130 0.037370895 -19.564430 42.003878 6707.2569 1.6144004e+08 0.050305084 0.040150022 -19.633837 41.916206 6709.1188 1.5344752e+08 0.049537906 0.041056974 -19.703243 41.828534 6710.9807 1.4722245e+08 0.047975817 0.040688455 -19.762757 41.749657 6712.8426 1.4164191e+08 0.046255005 0.043394365 -19.821204 41.671728 6714.7045 1.3724563e+08 0.044557943 0.047356371 -19.879652 41.593799 6716.5664 1.2727891e+08 0.042737630 0.049235566 -19.938099 41.515869 6718.4283 1.2087695e+08 0.040885058 0.050479390 -19.996545 41.437940 6720.2901 1.2032297e+08 0.040874762 0.050386148 -20.054992 41.360010 6722.1520 1.1751308e+08 0.041091291 0.050417251 -20.118877 41.274830 6724.0139 1.1262240e+08 0.039476823 0.049810398 -20.184641 41.187144 6725.8758 1.0731673e+08 0.036114346 0.041028942 -20.250329 41.099560 6727.7377 1.0033497e+08 0.035467758 0.039977558 -20.308807 41.021590 6729.5996 97111084. 0.034970554 0.040645786 -20.367254 40.943662 6731.4615 93862319. 0.033723886 0.042668452 -20.425701 40.865733 6733.3234 90124331. 0.032895636 0.045679963 -20.487533 40.775394 6735.1853 86284304. 0.033248656 0.049490096 -20.549634 40.684069 6737.0471 80077585. 0.034053912 0.054285748 -20.612426 40.593434 6738.9090 75326266. 0.033644682 0.062325744 -20.678179 40.505761 6740.7709 69245098. 0.030537397 0.065367352 -20.743933 40.418089 6742.6328 65855543. 0.024131917 0.070152717 -20.804922 40.334816 6744.4947 60323516. 0.011098646 0.078176051 -20.860122 40.256887 6746.3566 58213814. -0.042018389 0.074841519 -20.915322 40.178959 6748.2185 57845559. -0.0028888297 0.068166326 -20.973087 40.097408 6750.0804 59461277. 0.081572966 0.072141364 -21.035188 40.009736