# # 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 = 52.411721 km # Date (UTC) = 2015-01-22T10:08:15.966 # Date (julian) = 2457044.92240702 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.0419 6.6756259e+10 0.033591529 0.031391214 101.04816 44.364287 6499.2535 6.1962443e+10 0.041061235 0.032058094 101.15809 44.202289 6501.4650 5.6874844e+10 0.048692647 0.032724974 101.25147 44.058826 6503.6765 5.2562805e+10 0.056683549 0.033391854 101.34073 43.919976 6505.8880 4.8679129e+10 0.065102235 0.034058733 101.44620 43.762977 6508.0996 4.4922457e+10 0.073958800 0.034725613 101.55497 43.602270 6510.3111 4.1540911e+10 0.083413541 0.035392493 101.64423 43.463421 6512.5226 3.8631811e+10 0.093595991 0.036059373 101.73408 43.323666 6514.7341 3.5951635e+10 0.10444625 0.036726252 101.83822 43.161668 6516.9457 3.3074115e+10 0.11573501 0.037393132 101.94236 42.999671 6519.1572 3.0151820e+10 0.12748430 0.038060012 102.04649 42.837675 6521.3687 2.7638364e+10 0.13995496 0.038726892 102.13908 42.686268 6523.5803 2.5497642e+10 0.14859397 0.039322926 102.22339 42.542459 6525.7918 2.3516624e+10 0.15505604 0.039691851 102.31890 42.388379 6528.0033 2.1587584e+10 0.16193413 0.041445104 102.42302 42.226416 6530.2148 1.9739947e+10 0.16763335 0.044129452 102.51055 42.083795 6532.4264 1.8152632e+10 0.17234709 0.047040365 102.59486 41.944944 6534.6379 1.6954844e+10 0.17529507 0.048122997 102.67916 41.806094 6536.8494 1.5812077e+10 0.17648586 0.048550486 102.76346 41.667245 6539.0609 1.4596021e+10 0.17635859 0.049717385 102.85905 41.509790 6541.2725 1.3387870e+10 0.17507383 0.051238173 102.95598 41.349538 6543.4840 1.2297550e+10 0.17292262 0.051508917 103.03532 41.210689 6545.6955 1.1394026e+10 0.17063744 0.052461798 103.11578 41.070479 6547.9070 1.0561326e+10 0.16907584 0.053632293 103.21414 40.908481 6550.1186 9.7385409e+09 0.16755274 0.055015046 103.30621 40.754130 6552.3301 8.9964554e+09 0.16575799 0.055503684 103.38556 40.615280 6554.5416 8.4157229e+09 0.16364549 0.054843746 103.46490 40.476431 6556.7531 7.9585489e+09 0.16149172 0.053902400 103.54424 40.337581 6558.9647 7.4699731e+09 0.15883952 0.052417292 103.62751 40.191852 6561.1762 6.9548125e+09 0.15621012 0.051285858 103.72008 40.029854 6563.3877 6.4539035e+09 0.15384055 0.049479868 103.80513 39.881023 6565.5992 6.0090478e+09 0.15154659 0.047637950 103.88447 39.742173 6567.8108 5.6603766e+09 0.14971095 0.045931662 103.96108 39.603323 6570.0223 5.3540944e+09 0.14797783 0.044908274 104.03546 39.464474 6572.2338 5.0213864e+09 0.14589048 0.044096253 104.11959 39.313225 6574.4453 4.6800430e+09 0.14337655 0.042641107 104.21216 39.151227 6576.6569 4.3548989e+09 0.14087593 0.040615320 104.29005 39.007915 6578.8684 4.0751079e+09 0.13763802 0.037278314 104.36443 38.869065 6581.0799 3.8613527e+09 0.13455598 0.035572407 104.43880 38.730234 6583.2914 3.6654631e+09 0.13176658 0.034874148 104.51317 38.591409 6585.5030 3.4888922e+09 0.12881142 0.033568656 104.58756 38.452563 6587.7145 3.3198702e+09 0.12656062 0.033316675 104.66194 38.313711 6589.9260 3.1425258e+09 0.12443717 0.031208824 104.74571 38.157335 6592.1376 2.9628351e+09 0.12219631 0.027939921 104.83214 37.996005 6594.3491 2.7909824e+09 0.12011258 0.025980896 104.90653 37.857156 6596.5606 2.6337108e+09 0.11771305 0.025724725 104.98085 37.718307 6598.7721 2.5011914e+09 0.11598273 0.025038523 105.05028 37.579455 6600.9837 2.3824393e+09 0.11598027 0.027012090 105.11970 37.440603 6603.1952 2.2671088e+09 0.11504524 0.026547726 105.18913 37.301754 6605.4067 2.1640090e+09 0.11441231 0.027006239 105.25855 37.162905 6607.6182 2.0646670e+09 0.11267175 0.024486216 105.33283 37.024055 6609.8298 1.9675437e+09 0.10967359 0.023952409 105.40722 36.885206 6612.0413 1.8848270e+09 0.10712541 0.024289904 105.47683 36.746354 6614.2528 1.7987806e+09 0.10603889 0.023766315 105.54625 36.607502 6616.4643 1.7041318e+09 0.10451050 0.023355177 105.62662 36.452232 6618.6759 1.6070604e+09 0.10380124 0.024281153 105.70402 36.299799 6620.8874 1.5084666e+09 0.10299695 0.025053158 105.76849 36.160947 6623.0989 1.4256234e+09 0.10138862 0.024528472 105.83395 36.022097 6625.3104 1.3545062e+09 0.099780280 0.025768053 105.90338 35.883247 6627.5220 1.2887275e+09 0.097596501 0.025518438 105.97280 35.744397 6629.7335 1.2320266e+09 0.096041174 0.025976487 106.04223 35.605548 6631.9450 1.1755136e+09 0.093899878 0.026026760 106.11082 35.466698 6634.1565 1.1265617e+09 0.092071489 0.026338262 106.17529 35.327847 6636.3681 1.0775320e+09 0.090428633 0.026406816 106.23975 35.188996 6638.5796 1.0282775e+09 0.089419399 0.025646391 106.30422 35.050146 6640.7911 9.8480450e+08 0.089999085 0.025173857 106.36868 34.911965 6643.0026 9.4336600e+08 0.089852373 0.025193018 106.43315 34.778073 6645.2142 9.0166967e+08 0.088960701 0.025552017 106.49888 34.640860 6647.4257 8.6046792e+08 0.087949055 0.026661913 106.57410 34.478864 6649.6372 8.1040906e+08 0.087227757 0.026755304 106.64513 34.325889 6651.8488 7.6415426e+08 0.086925922 0.027134611 106.70959 34.187037 6654.0603 7.2724904e+08 0.086330214 0.028010547 106.77405 34.048187 6656.2718 6.9259408e+08 0.084577266 0.028261978 106.83852 33.909337 6658.4833 6.6825697e+08 0.083000324 0.030918272 106.90299 33.770488 6660.6949 6.3775568e+08 0.081587890 0.032257587 106.96745 33.631639 6662.9064 6.1119085e+08 0.080291059 0.032535739 107.03024 33.494475 6665.1179 5.8707608e+08 0.079566302 0.028353937 107.08974 33.360583 6667.3294 5.6382879e+08 0.078962825 0.027224464 107.15085 33.225087 6669.5410 5.4536729e+08 0.077852200 0.027800101 107.21532 33.086238 6671.7525 5.2465372e+08 0.077591588 0.026876072 107.27826 32.947388 6673.9640 5.0466535e+08 0.076646205 0.028900965 107.33777 32.808537 6676.1755 4.8365989e+08 0.074172795 0.031826856 107.40015 32.664654 6678.3871 4.6029472e+08 0.073063795 0.030677730 107.46957 32.508475 6680.5986 4.3830480e+08 0.073460647 0.029570676 107.53620 32.362027 6682.8101 4.1361140e+08 0.074023709 0.031043500 107.60067 32.223177 6685.0216 3.9225084e+08 0.073845538 0.032727694 107.66243 32.087030 6687.2332 3.7512071e+08 0.071989349 0.034212862 107.72194 31.953138 6689.4447 3.6118213e+08 0.069483800 0.033615731 107.78145 31.816626 6691.6562 3.5038351e+08 0.068505744 0.032846439 107.84096 31.677776 6693.8677 3.4321644e+08 0.067466723 0.031306399 107.89792 31.538927 6696.0793 3.3317179e+08 0.067270004 0.029708720 107.95247 31.400076 6698.2908 3.2063612e+08 0.066307271 0.030616966 108.00948 31.263682 6700.5023 3.1060352e+08 0.064493634 0.031040303 108.06898 31.129791 6702.7138 2.9273406e+08 0.063650346 0.033446740 108.13324 30.982445 6704.9254 2.8019937e+08 0.063842676 0.036631960 108.20267 30.820449 6707.1369 2.6418806e+08 0.063453165 0.040167216 108.26093 30.679541 6709.3484 2.5155135e+08 0.062648626 0.040910929 108.31548 30.545650 6711.5599 2.4539272e+08 0.060558936 0.041329302 108.37366 30.408119 6713.7715 2.3402951e+08 0.058288067 0.046476885 108.43317 30.269268 6715.9830 2.2336184e+08 0.056386906 0.048383974 108.48912 30.133974 6718.1945 2.1439921e+08 0.054060813 0.050115375 108.54367 30.000082 6720.4061 2.0597048e+08 0.053202608 0.050372718 108.59822 29.862717 6722.6176 2.0104488e+08 0.052549924 0.049841716 108.65276 29.723868 6724.8291 1.9451870e+08 0.048513272 0.043003104 108.71749 29.573142 6727.0406 1.8524253e+08 0.046313541 0.040906255 108.78692 29.416931 6729.2522 1.7788316e+08 0.045706966 0.040877359 108.84213 29.277311 6731.4637 1.6803429e+08 0.043732265 0.042672839 108.89668 29.138460 6733.6752 1.6066242e+08 0.042462979 0.047590210 108.95123 29.004267 6735.8867 1.5779674e+08 0.043746020 0.050234766 109.00578 28.870376 6738.0983 1.5575660e+08 0.045057625 0.057862057 109.06032 28.736485 6740.3098 1.4784034e+08 0.044649633 0.064579578 109.11487 28.602593 6742.5213 1.3971166e+08 0.041787060 0.069881026 109.17242 28.443240 6744.7328 1.3189144e+08 0.037831223 0.078360243 109.22968 28.286233 6746.9444 1.2507972e+08 0.033295446 0.068007997 109.28423 28.152342 6749.1559 1.2095732e+08 0.032913852 0.072235251 109.33878 28.018452 6751.3674 1.1623760e+08 0.029640574 0.073867016 109.39333 27.884561 6753.5789 1.1061656e+08 0.027485628 0.074850849 109.44835 27.746616 6755.7905 1.0650477e+08 0.025244511 0.074258776 109.50620 27.584650 6758.0020 1.0074634e+08 0.024450835 0.073709537 109.56267 27.434353 6760.2135 92813415. 0.025117244 0.076468442 109.61722 27.300462 6762.4250 91116162. 0.029542020 0.077365213 109.66979 27.166571 6764.6366 87196418. 0.032506603 0.079513782 109.71938 27.032680 6766.8481 86309416. 0.033045342 0.081632157 109.77434 26.890253 6769.0596 85613544. 0.028424584 0.084598871 109.83798 26.734042 6771.2711 81039941. 0.024495177 0.089962794 109.89243 26.592429 6773.4827 77270423. 0.020561128 0.095326716 109.94202 26.458538 6775.6942 74037174. 0.016595465 0.10069064 109.99161 26.321485 6777.9057 69945157. 0.012561879 0.10605456 110.04120 26.182635 6780.1173 69825096. 0.0085366180 0.11141848 110.09592 26.033005 6782.3288 67485638. 0.0043582481 0.11678241 110.15378 25.876794 6784.5403 64828020. -7.7487917e-06 0.12214633 110.20426 25.740503 6786.7518 61606805. -0.0047119654 0.12751025 110.25385 25.606612 6788.9634 56140410. -0.010229171 0.13287417 110.31068 25.453170 6791.1749 52275802. -0.018004736 0.13823810 110.36731 25.300252 6793.3864 49005371. -0.043431638 0.14360202 110.41690 25.166360 6795.5979 49935992. -0.030199285 0.14896594 110.46757 25.029547 6797.8095 51418013. 0.00099312534 0.15432986 110.52543 24.873337