# # 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 = 35.763348 km # Date (UTC) = 2010-12-10T09:56:11.707 # Date (julian) = 2455540.91402439 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.0235 3.4013345e+11 0.035802679 0.031084109 -34.507148 46.849757 6498.1947 2.7774751e+11 0.043686264 0.031738833 -34.609385 46.739000 6500.3659 2.1450123e+11 0.051449810 0.032393558 -34.711383 46.628497 6502.5372 1.6937680e+11 0.059010657 0.033048282 -34.798482 46.533824 6504.7084 1.3917371e+11 0.066558032 0.033703006 -34.885582 46.439149 6506.8796 1.1776602e+11 0.074343516 0.034357730 -34.976765 46.340038 6509.0508 9.8307530e+10 0.082274279 0.035012454 -35.074742 46.233541 6511.2220 8.2815483e+10 0.090581944 0.035667178 -35.172417 46.127267 6513.3932 7.0909935e+10 0.099520498 0.036321903 -35.259508 46.028817 6515.5644 6.2429538e+10 0.10946606 0.036976627 -35.346598 45.930367 6517.7357 5.5847014e+10 0.12041915 0.037631351 -35.436252 45.828805 6519.9069 4.9632444e+10 0.13206326 0.038286075 -35.529969 45.722307 6522.0781 4.4038014e+10 0.14425536 0.038937700 -35.623276 45.616127 6524.2493 3.9341262e+10 0.15143335 0.039515528 -35.706579 45.517678 6526.4205 3.5665333e+10 0.15829835 0.040108955 -35.789882 45.419230 6528.5917 3.2476917e+10 0.16504595 0.041911909 -35.877335 45.317575 6530.7630 2.9270566e+10 0.17058640 0.044896817 -35.971053 45.211078 6532.9342 2.6244855e+10 0.17592711 0.047464591 -36.064241 45.105182 6535.1054 2.3583632e+10 0.17826235 0.048178582 -36.147554 45.010507 6537.2766 2.1431078e+10 0.17859267 0.048815630 -36.230867 44.915832 6539.4478 1.9600250e+10 0.17776802 0.050185695 -36.312623 44.819609 6541.6190 1.7972599e+10 0.17550555 0.051125783 -36.392141 44.721159 6543.7902 1.6473017e+10 0.17305313 0.051589296 -36.471659 44.622709 6545.9615 1.4986225e+10 0.17059894 0.052464181 -36.558823 44.518068 6548.1327 1.3550029e+10 0.16925097 0.053707267 -36.648280 44.411571 6550.3039 1.2206605e+10 0.16764061 0.055061451 -36.733544 44.308469 6552.4751 1.1104287e+10 0.16586545 0.055467183 -36.813060 44.210020 6554.6463 1.0211814e+10 0.16367516 0.054845943 -36.892576 44.111572 6556.8175 9.3817965e+09 0.16139084 0.053892933 -36.979855 44.006838 6558.9888 8.5677632e+09 0.15856205 0.052396768 -37.069312 43.900341 6561.1600 7.7979949e+09 0.15575441 0.051293853 -37.152825 43.797327 6563.3312 7.1470038e+09 0.15308028 0.049545268 -37.228565 43.698865 6565.5024 6.6290814e+09 0.15025688 0.047747920 -37.304306 43.600404 6567.6736 6.1938651e+09 0.14771775 0.046047632 -37.380038 43.504954 6569.8448 5.8124306e+09 0.14516011 0.044907410 -37.455768 43.410292 6572.0160 5.4410835e+09 0.14231965 0.044220969 -37.532936 43.313832 6574.1873 5.0569348e+09 0.13870018 0.042765067 -37.618134 43.207335 6576.3585 4.6724279e+09 0.13523397 0.040958785 -37.703332 43.100838 6578.5297 4.3121384e+09 0.13121223 0.037813177 -37.780914 43.000814 6580.7009 4.0139755e+09 0.12700173 0.035873019 -37.856643 42.902364 6582.8721 3.7538103e+09 0.12330783 0.035056467 -37.933223 42.802599 6585.0433 3.4930455e+09 0.11999200 0.033936130 -38.014162 42.696102 6587.2145 3.2305885e+09 0.11728751 0.033205905 -38.095101 42.589605 6589.3858 2.9847400e+09 0.11512744 0.032280659 -38.171798 42.489664 6591.5570 2.7824756e+09 0.11259624 0.028573426 -38.247538 42.391203 6593.7282 2.6075410e+09 0.11018980 0.026425222 -38.324190 42.291332 6595.8994 2.4235177e+09 0.10737314 0.025716842 -38.405127 42.184836 6598.0706 2.2343633e+09 0.10545619 0.025373447 -38.486064 42.078339 6600.2418 2.0567780e+09 0.10476781 0.025487050 -38.559556 41.978503 6602.4131 1.9061802e+09 0.10396255 0.027164150 -38.631499 41.880053 6604.5843 1.7828678e+09 0.10262945 0.026418196 -38.703442 41.782311 6606.7555 1.6778917e+09 0.10143760 0.026146382 -38.775386 41.687648 6608.9267 1.5850715e+09 0.098127508 0.023707869 -38.847331 41.592986 6611.0979 1.4958482e+09 0.094842977 0.024896015 -38.921859 41.491863 6613.2691 1.3997979e+09 0.093543720 0.023672335 -38.998538 41.385366 6615.4403 1.3017118e+09 0.091889400 0.023265080 -39.073527 41.280463 6617.6116 1.2170320e+09 0.090544283 0.023642010 -39.141693 41.182001 6619.7828 1.1451176e+09 0.089455566 0.024714785 -39.209859 41.083540 6621.9540 1.0765787e+09 0.087859106 0.024773243 -39.285149 40.980596 6624.1252 1.0085320e+09 0.085573609 0.024929332 -39.366086 40.874099 6626.2964 9.3520025e+08 0.083927629 0.026213236 -39.443539 40.769294 6628.4676 8.7578488e+08 0.081965098 0.025892960 -39.507909 40.670844 6630.6389 8.2446278e+08 0.079996177 0.025929876 -39.572279 40.572395 6632.8101 7.7562290e+08 0.078396803 0.026129479 -39.643656 40.469363 6634.9813 7.3280507e+08 0.077045266 0.026398422 -39.720334 40.362866 6637.1525 6.8059612e+08 0.075934668 0.026086724 -39.795122 40.258155 6639.3237 6.3666046e+08 0.075581914 0.025512373 -39.863279 40.159706 6641.4949 6.0095104e+08 0.076445844 0.025149981 -39.931436 40.061257 6643.6661 5.6457552e+08 0.076023811 0.025293198 -40.002069 39.958133 6645.8374 5.3322347e+08 0.075341672 0.025843955 -40.074488 39.851636 6648.0086 5.0057594e+08 0.074694622 0.026970023 -40.145914 39.747899 6650.1798 4.6993829e+08 0.074248638 0.026296395 -40.214080 39.653224 6652.3510 4.4419188e+08 0.073981991 0.027347096 -40.282246 39.558549 6654.5222 4.1884269e+08 0.073316579 0.027813756 -40.352933 39.454339 6656.6934 3.9228251e+08 0.071694820 0.028632040 -40.425350 39.343582 6658.8646 3.6807756e+08 0.070347454 0.031594550 -40.496722 39.233869 6661.0359 3.4332772e+08 0.069238262 0.032553216 -40.564880 39.127372 6663.2071 3.2070808e+08 0.068214364 0.032425826 -40.633038 39.020875 6665.3783 3.0079338e+08 0.067896874 0.027927282 -40.697796 38.925004 6667.5495 2.8338895e+08 0.067423674 0.027305302 -40.762168 38.830341 6669.7207 2.6904375e+08 0.066635669 0.027615468 -40.828607 38.731543 6671.8919 2.5378785e+08 0.066467149 0.026878059 -40.901024 38.620787 6674.0632 2.4005840e+08 0.065598006 0.029008066 -40.973441 38.510031 6676.2344 2.2596168e+08 0.063246835 0.031864774 -41.041985 38.403148 6678.4056 2.1166734e+08 0.062231341 0.030665341 -41.110143 38.296651 6680.5768 1.9739774e+08 0.062739844 0.029565972 -41.174049 38.196798 6682.7480 1.8372678e+08 0.063374383 0.030996055 -41.234641 38.102123 6684.9192 1.7490793e+08 0.063255163 0.032700739 -41.295233 38.007448 6687.0904 1.6742224e+08 0.061510325 0.034292457 -41.366722 37.897956 6689.2617 1.6023653e+08 0.058780307 0.033780487 -41.439141 37.787199 6691.4329 1.4982263e+08 0.057739652 0.032899133 -41.509115 37.678887 6693.6041 1.3603914e+08 0.056659656 0.031396848 -41.577273 37.572390 6695.7753 1.2671195e+08 0.056188730 0.029717059 -41.642859 37.468572 6697.9465 1.1894086e+08 0.055220673 0.030211049 -41.699655 37.373909 6700.1177 1.1352466e+08 0.053404588 0.030755047 -41.756452 37.279247 6702.2890 1.0795346e+08 0.051784926 0.033107460 -41.819900 37.175162 6704.4602 1.0221337e+08 0.051882807 0.036403520 -41.888058 37.064404 6706.6314 96077088. 0.051433232 0.039545276 -41.956216 36.954660 6708.8026 95395244. 0.050832582 0.040917579 -42.024374 36.848163 6710.9738 88344977. 0.048845025 0.040687107 -42.092533 36.741665 6713.1450 82371463. 0.046422474 0.044211160 -42.156898 36.635168 6715.3162 74948468. 0.043776817 0.047702033 -42.220797 36.528671 6717.4875 67638939. 0.040610597 0.049844117 -42.284701 36.422165 6719.6587 66438268. 0.037858861 0.050744051 -42.348609 36.315652 6721.8299 64015363. 0.034727374 0.050553949 -42.411125 36.210719 6724.0011 62564416. 0.011782287 0.049917442 -42.467922 36.112270 6726.1723 59703515. 0.026464911 0.040952922 -42.524718 36.013822 6728.3435 55861424. 0.067450676 0.040115000 -42.585456 35.910908