# # 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 = 55.082935 km # Date (UTC) = 2015-01-25T10:51:46.887 # Date (julian) = 2457047.95262601 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.4792 7.8010844e+10 0.031547746 0.030919969 89.083450 47.268733 6497.7807 6.9113572e+10 0.038955453 0.031613973 89.209868 47.100146 6500.0821 6.1554319e+10 0.046357228 0.032307977 89.330315 46.931561 6502.3836 5.5462820e+10 0.053937642 0.033001982 89.450726 46.762988 6504.6851 5.0293396e+10 0.061860382 0.033695986 89.571119 46.594436 6506.9866 4.5619193e+10 0.070216523 0.034389990 89.707836 46.398136 6509.2880 4.1209424e+10 0.079039428 0.035083995 89.843520 46.200600 6511.5895 3.7146525e+10 0.088436158 0.035777999 89.957918 46.032015 6513.8910 3.3618965e+10 0.098590913 0.036472004 90.076121 45.863429 6516.1925 3.0624161e+10 0.10963277 0.037166008 90.196537 45.694843 6518.4940 2.7870543e+10 0.12150614 0.037860012 90.311109 45.526257 6520.7954 2.5404871e+10 0.13424967 0.038554017 90.423632 45.357683 6523.0969 2.3287990e+10 0.14485823 0.039203131 90.531987 45.189132 6525.3984 2.1265554e+10 0.15252428 0.039736748 90.644265 45.020558 6527.6999 1.9421391e+10 0.15962879 0.041224580 90.758664 44.851971 6530.0013 1.7757258e+10 0.16649745 0.043830574 90.867111 44.677436 6532.3028 1.6258785e+10 0.17183836 0.046937164 90.975488 44.504802 6534.6043 1.4909128e+10 0.17534233 0.048113602 91.083864 44.336215 6536.9058 1.3634826e+10 0.17694041 0.048600919 91.192241 44.167630 6539.2073 1.2490659e+10 0.17697266 0.049894499 91.300617 43.999045 6541.5087 1.1481026e+10 0.17543195 0.051161553 91.408994 43.830460 6543.8102 1.0647650e+10 0.17293101 0.051594535 91.510252 43.670179 6546.1117 9.9246939e+09 0.17042440 0.052556422 91.597981 43.525681 6548.4132 9.2445293e+09 0.16874830 0.053791029 91.694106 43.368942 6550.7146 8.5690393e+09 0.16682917 0.055164298 91.802461 43.194372 6553.0161 7.9049063e+09 0.16526013 0.055326967 91.906341 43.024264 6555.3176 7.3235229e+09 0.16314825 0.054586512 92.008695 42.855677 6557.6191 6.8337873e+09 0.16092771 0.053478073 92.111050 42.687092 6559.9205 6.3735385e+09 0.15848214 0.052283277 92.210852 42.518508 6562.2220 5.9321133e+09 0.15564211 0.050668640 92.307189 42.349923 6564.5235 5.5600145e+09 0.15287991 0.048534347 92.396957 42.199720 6566.8250 5.2514143e+09 0.15065354 0.046716197 92.484687 42.055221 6569.1265 4.9811957e+09 0.14835197 0.044860655 92.579521 41.885872 6571.4279 4.7010645e+09 0.14662563 0.044386399 92.675857 41.712257 6573.7294 4.4055568e+09 0.14418053 0.043072148 92.772189 41.543671 6576.0309 4.1110818e+09 0.14162081 0.041335843 92.868514 41.375102 6578.3324 3.8413253e+09 0.13878735 0.038124773 92.964832 41.206550 6580.6338 3.6146517e+09 0.13562707 0.035934992 93.049565 41.058264 6582.9353 3.4242407e+09 0.13280332 0.035039268 93.132133 40.913767 6585.2368 3.2635756e+09 0.12961628 0.033781460 93.227158 40.747475 6587.5383 3.0795864e+09 0.12674539 0.033277630 93.322025 40.577421 6589.8398 2.8809794e+09 0.12409194 0.031379989 93.412336 40.402816 6592.1412 2.7102759e+09 0.12128514 0.027936352 93.495125 40.245762 6594.4427 2.5623506e+09 0.11894691 0.025929500 93.572536 40.101263 6596.7442 2.4348691e+09 0.11644763 0.025723890 93.658272 39.941224 6599.0457 2.3116493e+09 0.11467184 0.024932476 93.748586 39.772639 6601.3471 2.2022588e+09 0.11480510 0.027209171 93.826199 39.627765 6603.6486 2.1058628e+09 0.11353352 0.026279296 93.904211 39.482145 6605.9501 2.0131227e+09 0.11308479 0.027462094 93.994525 39.313558 6608.2516 1.9042439e+09 0.11077146 0.023725720 94.084831 39.144984 6610.5530 1.7876403e+09 0.10775483 0.024531401 94.175123 38.976433 6612.8545 1.6815456e+09 0.10635870 0.023682285 94.252342 38.825309 6615.1560 1.5960283e+09 0.10508750 0.023256331 94.324591 38.680813 6617.4575 1.5134377e+09 0.10387511 0.023590924 94.411053 38.512626 6619.7590 1.4366575e+09 0.10317264 0.024709038 94.499093 38.341810 6622.0604 1.3684012e+09 0.10182872 0.024741907 94.571342 38.197312 6624.3619 1.2986715e+09 0.099876886 0.025056038 94.645857 38.048283 6626.6634 1.2400476e+09 0.097960160 0.025745687 94.730149 37.879696 6628.9649 1.1780421e+09 0.096395074 0.026094839 94.808093 37.723811 6631.2663 1.1253417e+09 0.094342789 0.025957821 94.880345 37.579314 6633.5678 1.0766407e+09 0.092549704 0.026251388 94.959695 37.420617 6635.8693 1.0263718e+09 0.090588394 0.026530152 95.043988 37.252033 6638.1708 9.8236300e+08 0.089104017 0.025664202 95.112302 37.105815 6640.4723 9.3669018e+08 0.088962714 0.025212871 95.179402 36.961297 6642.7737 8.9326754e+08 0.088734706 0.025183359 95.263525 36.792950 6645.0752 8.4963159e+08 0.087875888 0.025486915 95.342140 36.632314 6647.3767 8.0667205e+08 0.086899699 0.026636105 95.409226 36.487817 6649.6782 7.7282531e+08 0.086103508 0.026698878 95.480702 36.333870 6651.9796 7.3801975e+08 0.085738023 0.027234916 95.558976 36.165283 6654.2811 7.0301235e+08 0.085083977 0.027916468 95.629068 36.014316 6656.5826 6.6883634e+08 0.083283211 0.028534755 95.696155 35.869819 6658.8841 6.3540607e+08 0.081737458 0.031628992 95.772105 35.706232 6661.1855 6.0568003e+08 0.080413879 0.032629452 95.848881 35.540866 6663.4870 5.7715782e+08 0.079117890 0.032348247 95.915972 35.396366 6665.7885 5.5535064e+08 0.078826673 0.027255144 95.985240 35.247177 6668.0900 5.3043906e+08 0.078068080 0.027550399 96.063510 35.078592 6670.3915 5.0559554e+08 0.077545117 0.027147278 96.135812 34.922866 6672.6929 4.8274499e+08 0.077170866 0.027281235 96.202903 34.778369 6674.9944 4.5936593e+08 0.075659278 0.029793641 96.273067 34.619513 6677.2959 4.4335838e+08 0.073410164 0.031937584 96.345315 34.450926 6679.5974 4.2746551e+08 0.073089738 0.029774136 96.407913 34.304868 6681.8988 4.1027198e+08 0.073861413 0.030346936 96.469897 34.160291 6684.2003 3.9396379e+08 0.073926601 0.032664257 96.548070 33.991848 6686.5018 3.7407738e+08 0.072755874 0.034053037 96.620841 33.833107 6688.8033 3.5705845e+08 0.069701306 0.033970613 96.682770 33.693769 6691.1048 3.3949756e+08 0.068541288 0.032976548 96.748815 33.542767 6693.4062 3.2317218e+08 0.067669229 0.031464727 96.821063 33.374182 6695.7077 3.1024658e+08 0.067394147 0.029729477 96.885696 33.223371 6698.0092 2.9716188e+08 0.066741092 0.030230421 96.947625 33.078872 6700.3107 2.8595502e+08 0.065071141 0.030898144 97.017803 32.915128 6702.6121 2.7215423e+08 0.064122009 0.033365524 97.087891 32.749920 6704.9136 2.5781445e+08 0.064552891 0.036626186 97.144658 32.605423 6707.2151 2.4770965e+08 0.064268620 0.040156015 97.204540 32.457290 6709.5166 2.3918340e+08 0.063496753 0.040803980 97.276789 32.294724 6711.8180 2.2891568e+08 0.061468689 0.041622945 97.343461 32.141921 6714.1195 2.1739926e+08 0.059313905 0.047312394 97.405390 31.997423 6716.4210 2.0424604e+08 0.057565803 0.049021455 97.469911 31.838410 6718.7225 1.9614082e+08 0.055175389 0.050937619 97.536141 31.669824 6721.0240 1.8765589e+08 0.055384806 0.050311117 97.593460 31.523923 6723.3254 1.8000261e+08 0.054121402 0.049550443 97.650323 31.379313 6725.6269 1.7289317e+08 0.049935265 0.041184419 97.722537 31.216789 6727.9284 1.6524482e+08 0.049024794 0.039723508 97.789473 31.060424 6730.2299 1.6349749e+08 0.047558078 0.040694075 97.846240 30.915926 6732.5313 1.5793992e+08 0.046022712 0.043838027 97.906844 30.761664 6734.8328 1.5011161e+08 0.045880185 0.049303491 97.973074 30.593077 6737.1343 1.4374920e+08 0.047664735 0.054563369 98.032260 30.446267 6739.4358 1.3669731e+08 0.048166807 0.063359856 98.089027 30.306930 6741.7373 1.3512473e+08 0.046254854 0.067861374 98.153418 30.144025 6744.0387 1.3405766e+08 0.041341133 0.077823367 98.217508 29.978973 6746.3402 1.2740911e+08 0.039088550 0.075032009 98.269114 29.834475 6748.6417 1.2345389e+08 0.036523331 0.070392815 98.323758 29.686224 6750.9432 1.1741193e+08 0.033780414 0.073614615 98.389988 29.523661 6753.2446 1.1206681e+08 0.030978203 0.073768981 98.456219 29.357804 6755.5461 1.0488715e+08 0.028870101 0.074365909 98.522449 29.189218 6757.8476 96655398. 0.027708332 0.074167841 98.575722 29.046546 6760.1491 93095571. 0.028480530 0.076345539 98.627328 28.907208 6762.4505 91602701. 0.032810753 0.077324077 98.692801 28.740136 6764.7520 91981191. 0.035711658 0.079519313 98.754829 28.579957 6767.0535 89352467. 0.035772429 0.081915858 98.806434 28.440620 6769.3550 86849476. 0.030699618 0.085315239 98.863153 28.291056 6771.6565 83362424. 0.026559140 0.090897334 98.929383 28.122471 6773.9579 81414681. 0.022397779 0.096479428 98.991469 27.958032 6776.2594 78387158. 0.018251871 0.10206152 99.051442 27.795971 6778.5609 75140284. 0.014109954 0.10764362 99.103047 27.651474 6780.8624 70417585. 0.0099873929 0.11322571 99.155427 27.505352 6783.1638 64423927. 0.0058760521 0.11880780 99.215623 27.342818 6785.4653 62297395. 0.0017306717 0.12438990 99.275825 27.180271 6787.7668 61645139. -0.0024273521 0.12997199 99.336033 27.017707 6790.0683 61483481. -0.0065840298 0.13555409 99.396241 26.850519 6792.3698 58618798. -0.010729291 0.14113618 99.455528 26.685068 6794.6712 54642921. -0.014884427 0.14671828 99.507137 26.545731 6796.9727 51546065. -0.019073201 0.15230037 99.560203 26.401439 6799.2742 52857211. -0.023322736 0.15788246 99.620411 26.232853 6801.5757 53465347. -0.027690272 0.16346456 99.677557 26.067329 6803.8771 53031107. -0.032901595 0.16904665 99.731743 25.904765 6806.1786 49692673. -0.043624283 0.17462875 99.791024 25.742228 6808.4801 45707603. -0.042751977 0.18021084 99.850101 25.579689 6810.7816 44084193. -0.034168252 0.18579294 99.904291 25.417125