# # 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 = 49.826775 km # Date (UTC) = 2015-11-27T10:47:07.869 # Date (julian) = 2457353.94939663 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.5581 1.0492437e+11 0.025857672 0.030340678 94.225531 27.247094 6495.7526 9.4520157e+10 0.032505503 0.031002409 94.277198 27.124274 6497.9470 8.5426117e+10 0.039079594 0.031664140 94.328865 26.999415 6500.1415 7.7386553e+10 0.045720805 0.032325871 94.380531 26.875433 6502.3359 7.0485559e+10 0.052607569 0.032987602 94.432194 26.754881 6504.5304 6.4113814e+10 0.059860175 0.033649333 94.483858 26.634328 6506.7248 5.8334467e+10 0.067611872 0.034311064 94.535524 26.513775 6508.9193 5.3257872e+10 0.076029103 0.034972795 94.587191 26.393221 6511.1137 4.8622586e+10 0.085215150 0.035634526 94.638858 26.270262 6513.3082 4.4416527e+10 0.095257488 0.036296257 94.690525 26.145404 6515.5026 4.0724401e+10 0.10631388 0.036957987 94.741177 26.021556 6517.6971 3.7257691e+10 0.11829330 0.037619718 94.788541 25.900985 6519.8915 3.4053902e+10 0.13115820 0.038281449 94.835905 25.780414 6522.0860 3.0965209e+10 0.14453990 0.038939768 94.887201 25.659859 6524.2804 2.8132290e+10 0.15273340 0.039526587 94.938867 25.539306 6526.4749 2.5669967e+10 0.16035556 0.040165952 94.984879 25.426670 6528.6693 2.3737111e+10 0.16762150 0.041973472 95.026976 25.319513 6530.8638 2.2110487e+10 0.17352163 0.045037989 95.069074 25.212356 6533.0582 2.0551952e+10 0.17866070 0.047544338 95.120530 25.087887 6535.2527 1.8982324e+10 0.17990866 0.048114679 95.172197 24.963028 6537.4471 1.7413322e+10 0.17953590 0.048896035 95.221042 24.840991 6539.6416 1.6017306e+10 0.17827635 0.050420263 95.268402 24.720438 6541.8360 1.4745735e+10 0.17569917 0.051055406 95.315763 24.599884 6544.0305 1.3575575e+10 0.17312645 0.051669088 95.363123 24.479332 6546.2249 1.2502454e+10 0.17088167 0.052649623 95.410484 24.358779 6548.4194 1.1515275e+10 0.16922058 0.053792893 95.457841 24.238226 6550.6139 1.0633492e+10 0.16745040 0.055139062 95.505198 24.117672 6552.8083 9.8248789e+09 0.16585189 0.055383317 95.552562 23.997106 6555.0028 9.0812358e+09 0.16397638 0.054851052 95.599930 23.876534 6557.1972 8.4363576e+09 0.16154835 0.053742499 95.645373 23.760862 6559.3917 7.8958121e+09 0.15872431 0.052342975 95.687470 23.653706 6561.5861 7.4545792e+09 0.15576430 0.051083861 95.729567 23.546550 6563.7806 7.0591415e+09 0.15258595 0.049025442 95.775624 23.429316 6565.9750 6.6431433e+09 0.14981171 0.047211262 95.822985 23.308762 6568.1695 6.2155308e+09 0.14781291 0.045615889 95.870345 23.188209 6570.3639 5.8062007e+09 0.14570901 0.044766765 95.917705 23.067655 6572.5584 5.4344713e+09 0.14325312 0.043910396 95.965066 22.947102 6574.7528 5.0888064e+09 0.14033272 0.042493431 96.012426 22.826549 6576.9473 4.7665288e+09 0.13712192 0.040281073 96.059787 22.705996 6579.1417 4.4494689e+09 0.13321157 0.036992591 96.107147 22.585443 6581.3362 4.1544164e+09 0.13003513 0.035494813 96.154508 22.464889 6583.5306 3.9009551e+09 0.12740966 0.034753092 96.197671 22.350522 6585.7251 3.6905277e+09 0.12505183 0.033391098 96.235940 22.243366 6587.9195 3.5187009e+09 0.12349688 0.033362100 96.274210 22.136209 6590.1140 3.3455801e+09 0.12143033 0.030850066 96.320202 22.017667 6592.3084 3.1595912e+09 0.11906910 0.027773956 96.367569 21.897095 6594.5029 2.9649824e+09 0.11683322 0.025896471 96.412666 21.776534 6596.6973 2.7895366e+09 0.11430474 0.025724103 96.455720 21.655980 6598.8918 2.6352628e+09 0.11240781 0.024981401 96.499651 21.536304 6601.0862 2.4888377e+09 0.11239080 0.027086297 96.547012 21.420057 6603.2807 2.3514976e+09 0.11128034 0.026497114 96.594373 21.303810 6605.4751 2.2194019e+09 0.11061366 0.027063637 96.637938 21.183768 6607.6696 2.0927579e+09 0.10878584 0.024384830 96.680992 21.063214 6609.8640 1.9717865e+09 0.10577290 0.023962589 96.724048 20.942661 6612.0585 1.8544167e+09 0.10333206 0.024277057 96.767106 20.822107 6614.2529 1.7532150e+09 0.10223754 0.023766232 96.809936 20.705618 6616.4474 1.6687724e+09 0.10056441 0.023352516 96.852034 20.602288 6618.6418 1.5975928e+09 0.099613847 0.024255457 96.894131 20.498958 6620.8363 1.5295204e+09 0.098513316 0.025036689 96.936825 20.384899 6623.0307 1.4552359e+09 0.096775699 0.024503213 96.979879 20.264346 6625.2252 1.3824912e+09 0.095049339 0.025666320 97.022935 20.143788 6627.4196 1.3080278e+09 0.092766950 0.025478910 97.065995 20.023216 6629.6141 1.2394544e+09 0.091290837 0.025998076 97.109056 19.902645 6631.8085 1.1797729e+09 0.089359097 0.026012897 97.152110 19.786302 6634.0030 1.1192307e+09 0.087910703 0.026327061 97.195164 19.670054 6636.1974 1.0613329e+09 0.086682403 0.026473078 97.238218 19.550985 6638.3919 1.0052391e+09 0.085937407 0.025654569 97.281272 19.430432 6640.5863 9.4949348e+08 0.086450380 0.025198912 97.324327 19.311312 6642.7808 8.9923351e+08 0.086457128 0.025183648 97.367385 19.195064 6644.9752 8.4975287e+08 0.085701657 0.025449009 97.410384 19.078925 6647.1697 8.0821599e+08 0.084645823 0.026527127 97.448663 18.971751 6649.3641 7.7677869e+08 0.083633237 0.027131726 97.486933 18.864594 6651.5586 7.4809474e+08 0.083219007 0.026912251 97.527103 18.753827 6653.7531 7.1725542e+08 0.082640753 0.027910142 97.570157 18.637580 6655.9475 6.7783683e+08 0.080987793 0.028001726 97.612890 18.521012 6658.1420 6.4120208e+08 0.079561364 0.030312836 97.651637 18.400458 6660.3364 6.1072938e+08 0.078091616 0.031931772 97.690385 18.279905 6662.5309 5.8509039e+08 0.076644611 0.032746430 97.732373 18.162589 6664.7253 5.5979142e+08 0.075709331 0.029552224 97.775431 18.046340 6666.9198 5.3023101e+08 0.075390756 0.027087821 97.818490 17.930084 6669.1142 5.0169226e+08 0.074151887 0.028238403 97.861550 17.813819 6671.3087 4.7603847e+08 0.074179335 0.026869747 97.904149 17.697095 6673.5031 4.5411829e+08 0.073522434 0.028211656 97.942897 17.576542 6675.6976 4.3265112e+08 0.071397917 0.031134443 97.981644 17.455990 6677.8920 4.0838928e+08 0.070111357 0.031090129 98.023770 17.338814 6680.0865 3.8954992e+08 0.070329426 0.029460087 98.066824 17.222566 6682.2809 3.7374250e+08 0.071173152 0.030639172 98.107891 17.106318 6684.4754 3.5899768e+08 0.071481853 0.032678215 98.146642 16.990070 6686.6698 3.4750663e+08 0.070470398 0.034150794 98.185992 16.873823 6688.8643 3.3115540e+08 0.067921942 0.033984693 98.229046 16.757575 6691.0587 3.1726857e+08 0.067180265 0.032987409 98.272100 16.641327 6693.2532 3.0406540e+08 0.066613434 0.031517236 98.311641 16.525079 6695.4476 2.8971455e+08 0.066506312 0.029777251 98.350392 16.408832 6697.6421 2.7838787e+08 0.066152999 0.030172521 98.391268 16.292584 6699.8365 2.6521678e+08 0.065043232 0.030818561 98.434322 16.176336 6702.0310 2.5631864e+08 0.063647954 0.032901463 98.476638 16.059351 6704.2254 2.4572126e+08 0.064427715 0.036288249 98.515386 15.938798 6706.4199 2.3539686e+08 0.064737455 0.039177166 98.554134 15.818245 6708.6143 2.2693011e+08 0.064644118 0.040712559 98.592884 15.701345 6710.8088 2.1311793e+08 0.063634606 0.040654803 98.631635 15.585096 6713.0032 2.0334541e+08 0.062101099 0.043698305 98.670388 15.468839 6715.1977 1.9698811e+08 0.060436642 0.047580770 98.709141 15.352574 6717.3921 1.9090385e+08 0.058690946 0.049850013 98.747894 15.236313 6719.5866 1.8654747e+08 0.057211404 0.050812543 98.786645 15.120065 6721.7810 1.7952161e+08 0.057748398 0.050539228 98.825396 15.003817 6723.9755 1.6622291e+08 0.056358656 0.049912988 98.873359 14.872934 6726.1699 1.5608584e+08 0.052866701 0.040952900 98.922564 14.740077 6728.3644 1.4835184e+08 0.052498547 0.040144555 98.962892 14.624974 6730.5588 1.4176974e+08 0.051115728 0.041145138 99.001640 14.513032 6732.7533 1.3841246e+08 0.049703592 0.043878887 99.040390 14.398824 6734.9477 1.3159132e+08 0.049705083 0.049296577 99.079141 14.282575 6737.1422 1.2543727e+08 0.051283305 0.054588519 99.117891 14.166327 6739.3366 1.2142595e+08 0.051416658 0.063238538 99.156639 14.050079 6741.5311 1.1490209e+08 0.049411862 0.067273400 99.195386 13.933832 6743.7255 1.0995089e+08 0.044365532 0.075941942 99.234137 13.817584 6745.9200 1.0886378e+08 0.041892235 0.078953645 99.272888 13.701336 6748.1144 1.0695837e+08 0.036838837 0.067619007 99.311982 13.575814 6750.3089 1.0576509e+08 0.033089462 0.072531587 99.351348 13.442957 6752.5033 1.0143837e+08 0.029275792 0.073552008 99.390389 13.318839 6754.6978 93218355. 0.026596454 0.075091322 99.429137 13.202591 6756.8923 90005836. 0.022547044 0.076462802 99.467885 13.087219 6759.0867 84819119. 0.022041388 0.075840877 99.506636 12.975277 6761.2812 80044256. 0.021779721 0.077991454 99.545387 12.863334 6763.4756 79717034. 0.025288650 0.077886226 99.589012 12.732968 6765.6701 78038243. 0.026040384 0.079653514 99.633296 12.600110 6767.8645 76080028. 0.022360981 0.081007743 99.672885 12.481349 6770.0590 73484098. 0.016125289 0.087022697 99.711636 12.365101 6772.2534 65190551. 0.0093540582 0.092345206 99.750708 12.242705 6774.4479 61611415. 0.0029135858 0.097667715 99.790070 12.114769 6776.6423 61631760. -0.0032040952 0.10299022 99.829134 11.992595 6778.8368 60704419. -0.010881999 0.10831273 99.867890 11.876329 6781.0312 63629607. -0.021027114 0.11363524 99.907593 11.758067 6783.2257 61414028. -0.072781350 0.11895775 99.951870 11.630151 6785.4201 55554654. -0.038064953 0.12428026 99.994782 11.503854 6787.6146 47825191. 0.060912832 0.12960277 100.02923 11.387589