# # 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 = 52.414682 km # Date (UTC) = 2015-12-17T10:06:02.278 # Date (julian) = 2457373.92085970 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.7452 6.5529418e+10 0.023227613 0.030397102 105.11961 27.363115 6496.0220 6.1066612e+10 0.030107163 0.031083667 105.16785 27.261549 6498.2988 5.7055436e+10 0.037143840 0.031770232 105.21947 27.150371 6500.5757 5.2985934e+10 0.044429189 0.032456796 105.27109 27.039193 6502.8525 4.8953599e+10 0.052065579 0.033143361 105.32271 26.931288 6505.1293 4.5318466e+10 0.060240056 0.033829926 105.37434 26.824066 6507.4061 4.1842056e+10 0.068989443 0.034516491 105.42597 26.716849 6509.6829 3.8690358e+10 0.078486473 0.035203055 105.47758 26.609641 6511.9597 3.5911779e+10 0.088886065 0.035889620 105.52920 26.502434 6514.2365 3.3218050e+10 0.10011366 0.036576185 105.58082 26.395226 6516.5133 3.0663593e+10 0.11222207 0.037262750 105.63243 26.288018 6518.7901 2.8256977e+10 0.12518996 0.037949315 105.68405 26.179730 6521.0669 2.5971419e+10 0.13895374 0.038635879 105.73567 26.068552 6523.3437 2.3907590e+10 0.14970271 0.039264301 105.78729 25.957375 6525.6205 2.2040857e+10 0.15787333 0.039711396 105.83592 25.849179 6527.8973 2.0307012e+10 0.16592846 0.041367940 105.88357 25.741957 6530.1741 1.8720861e+10 0.17283989 0.044072476 105.93216 25.634739 6532.4509 1.7199031e+10 0.17797398 0.047060902 105.98378 25.527531 6534.7277 1.5763983e+10 0.18039875 0.048148135 106.03540 25.420323 6537.0045 1.4489864e+10 0.18061274 0.048687371 106.08702 25.313116 6539.2814 1.3349644e+10 0.17933638 0.049984200 106.13864 25.205909 6541.5582 1.2340911e+10 0.17702740 0.051145522 106.18947 25.098702 6543.8350 1.1408351e+10 0.17435264 0.051601034 106.23712 24.991494 6546.1118 1.0529479e+10 0.17174929 0.052556496 106.28476 24.884287 6548.3886 9.7315844e+09 0.16999391 0.053783689 106.33242 24.777069 6550.6654 8.9937410e+09 0.16796529 0.055151966 106.38007 24.669848 6552.9422 8.3148656e+09 0.16617648 0.055349618 106.42836 24.562628 6555.2190 7.7038869e+09 0.16391173 0.054669356 106.47998 24.455420 6557.4958 7.1325576e+09 0.16141893 0.053555337 106.53160 24.348212 6559.7726 6.6268971e+09 0.15863172 0.052299975 106.58067 24.241005 6562.0494 6.1767523e+09 0.15555684 0.050832885 106.62831 24.133798 6564.3262 5.7577838e+09 0.15230764 0.048623755 106.67596 24.026591 6566.6030 5.3788124e+09 0.14976110 0.046841755 106.72361 23.919383 6568.8798 5.0184940e+09 0.14726342 0.044962888 106.77126 23.812176 6571.1566 4.6831142e+09 0.14520856 0.044460495 106.81891 23.704960 6573.4334 4.3827853e+09 0.14260277 0.043309654 106.86656 23.597738 6575.7102 4.1090454e+09 0.13958571 0.041662106 106.91422 23.490517 6577.9871 3.8585759e+09 0.13631902 0.038669949 106.96186 23.383310 6580.2639 3.6245779e+09 0.13275291 0.036276908 107.00951 23.276102 6582.5407 3.4103325e+09 0.12931875 0.035146664 107.05716 23.168894 6584.8175 3.2142598e+09 0.12608379 0.034070203 107.10481 23.061687 6587.0943 3.0293542e+09 0.12322447 0.033179258 107.15225 22.954684 6589.3711 2.8627337e+09 0.12081073 0.032309781 107.19593 22.851447 6591.6479 2.7097003e+09 0.11831904 0.028470842 107.23961 22.748211 6593.9247 2.5571698e+09 0.11607808 0.026242534 107.28540 22.642851 6596.2015 2.4189882e+09 0.11341799 0.025726358 107.33305 22.535629 6598.4783 2.2818877e+09 0.11161528 0.025178805 107.38071 22.428407 6600.7551 2.1596585e+09 0.11135730 0.026542248 107.42835 22.321199 6603.0319 2.0559149e+09 0.11040525 0.026644377 107.47600 22.213992 6605.3087 1.9530798e+09 0.10964341 0.026924039 107.52168 22.106784 6607.5855 1.8552521e+09 0.10789425 0.024550792 107.56536 21.999576 6609.8623 1.7592228e+09 0.10481510 0.023962086 107.60904 21.892369 6612.1391 1.6710704e+09 0.10235355 0.024216789 107.65660 21.789044 6614.4159 1.5902391e+09 0.10122881 0.023653920 107.70425 21.685807 6616.6928 1.5135214e+09 0.099644640 0.023391027 107.75007 21.580740 6618.9696 1.4442271e+09 0.098737445 0.024502929 107.79375 21.473519 6621.2464 1.3768129e+09 0.097693253 0.025007787 107.83743 21.366298 6623.5232 1.3082976e+09 0.095776636 0.024685653 107.88625 21.246473 6625.8000 1.2412846e+09 0.094282198 0.026352218 107.93539 21.125862 6628.0768 1.1674582e+09 0.092353753 0.025734270 107.98348 21.017460 6630.3536 1.1029998e+09 0.090603786 0.025929173 108.03113 20.914223 6632.6304 1.0488453e+09 0.088680923 0.026107935 108.07804 20.810255 6634.9072 9.9499404e+08 0.086991213 0.026393018 108.12172 20.703047 6637.1840 9.4875087e+08 0.085367000 0.026071290 108.16540 20.595840 6639.4608 9.0286120e+08 0.084803054 0.025463370 108.20908 20.491266 6641.7376 8.6202020e+08 0.085488031 0.025150805 108.25276 20.388015 6644.0144 8.2652115e+08 0.084732140 0.025345165 108.29645 20.284180 6646.2912 7.9504260e+08 0.083909385 0.026070898 108.34012 20.176973 6648.5680 7.6212490e+08 0.082937656 0.027344530 108.38380 20.069767 6650.8448 7.2722892e+08 0.082569838 0.026448645 108.43091 19.956938 6653.1216 6.8743004e+08 0.082367605 0.027587771 108.48005 19.840795 6655.3985 6.4038127e+08 0.081185841 0.027774858 108.52706 19.729691 6657.6753 6.0696574e+08 0.079609469 0.029684392 108.57073 19.626454 6659.9521 5.7723542e+08 0.078272377 0.031635996 108.61441 19.523217 6662.2289 5.5718740e+08 0.076755434 0.032915860 108.65809 19.416518 6664.5057 5.3670541e+08 0.075714495 0.030355833 108.70177 19.309310 6666.7825 5.0976633e+08 0.075592982 0.027061072 108.74544 19.203501 6669.0593 4.8819945e+08 0.074343809 0.028294808 108.78912 19.100250 6671.3361 4.6607685e+08 0.074439062 0.026870138 108.83280 18.997000 6673.6129 4.4675104e+08 0.073774156 0.028375857 108.87731 18.882979 6675.8897 4.2797539e+08 0.071506840 0.031502474 108.92199 18.766836 6678.1665 4.0489318e+08 0.070380357 0.030825242 108.96607 18.656025 6680.4433 3.8249893e+08 0.070785686 0.029537148 109.00974 18.548818 6682.7201 3.6238094e+08 0.071463481 0.030974746 109.05342 18.441922 6684.9969 3.4589568e+08 0.071324235 0.032704682 109.09710 18.338685 6687.2737 3.3574152e+08 0.069354130 0.034190234 109.14078 18.235448 6689.5505 3.2123513e+08 0.066900663 0.033520447 109.18501 18.124986 6691.8273 3.0246835e+08 0.066063428 0.032806063 109.22968 18.008842 6694.1042 2.8969136e+08 0.065260578 0.031115048 109.27403 17.896840 6696.3810 2.7970442e+08 0.065203162 0.029834067 109.31771 17.793589 6698.6578 2.7185118e+08 0.064168104 0.031120677 109.36140 17.690339 6700.9346 2.6331381e+08 0.062370878 0.031360917 109.40587 17.576735 6703.2114 2.5111546e+08 0.062194095 0.034204171 109.45054 17.460592 6705.4882 2.4256495e+08 0.062359096 0.037536499 109.49241 17.351733 6707.7650 2.3259181e+08 0.062102668 0.040077242 109.53212 17.248496 6710.0418 2.2321387e+08 0.061051294 0.040504676 109.57226 17.144667 6712.3186 2.1271468e+08 0.058921477 0.042421496 109.62139 17.028523 6714.5954 2.0455913e+08 0.056842948 0.047348171 109.67053 16.912379 6716.8722 1.9564470e+08 0.054860973 0.049686051 109.71206 16.803450 6719.1490 1.8585715e+08 0.052613521 0.051228259 109.75176 16.696243 6721.4258 1.7705244e+08 0.053068527 0.050432202 109.79290 16.587741 6723.7026 1.7138474e+08 0.051388338 0.049760813 109.83758 16.476048 6725.9794 1.6574696e+08 0.047318455 0.040964212 109.88226 16.364130 6728.2562 1.5887872e+08 0.046596634 0.039991280 109.92693 16.247987 6730.5330 1.5179134e+08 0.045050745 0.041109778 109.97160 16.131843 6732.8099 1.4317294e+08 0.043698052 0.043889301 110.01546 16.026179 6735.0867 1.3886500e+08 0.043779022 0.049385429 110.05914 15.922942 6737.3635 1.3523440e+08 0.045477840 0.055293397 110.10311 15.815917 6739.6403 1.3054643e+08 0.045818115 0.063610123 110.14778 15.699774 6741.9171 1.2335212e+08 0.043883152 0.068374253 110.19245 15.583630 6744.1939 1.1978494e+08 0.039191523 0.077943376 110.23712 15.467487 6746.4707 1.1384295e+08 0.036460154 0.073514979 110.28179 15.351344 6748.7475 1.1048374e+08 0.034458342 0.070949502 110.32646 15.235200 6751.0243 1.0803783e+08 0.031615682 0.073721946 110.37113 15.119057 6753.3011 99633050. 0.028869864 0.073951729 110.41293 15.010369 6755.5779 95355655. 0.026719278 0.074351967 110.45264 14.907132 6757.8547 93879356. 0.025524035 0.074146210 110.49238 14.803395 6760.1315 89891250. 0.026308375 0.076312084 110.53259 14.691702 6762.4083 88398804. 0.030617076 0.077392173 110.57280 14.580009 6764.6851 82527473. 0.033605829 0.079516109 110.61667 14.464663 6766.9619 78519669. 0.033900127 0.081889680 110.66134 14.348519 6769.2387 79092345. 0.028927447 0.085033332 110.70601 14.232376 6771.5156 75828948. 0.024839834 0.090555587 110.75068 14.116233 6773.7924 73620587. 0.020739755 0.096077843 110.79535 14.000089 6776.0692 69863496. 0.016612412 0.10160010 110.84002 13.883946 6778.3460 65820369. 0.012450063 0.10712235 110.88422 13.768272 6780.6228 62937087. 0.0082313296 0.11264461 110.92442 13.656595 6782.8996 58453110. 0.0038687264 0.11816686 110.96463 13.544918 6785.1764 54146249. -0.00071596951 0.12368912 111.00870 13.429372 6787.4532 53317861. -0.0061728081 0.12921137 111.05337 13.313229 6789.7300 49676705. -0.018771506 0.13473363 111.09804 13.199890 6792.0068 47374456. -0.016140799 0.14025589 111.14271 13.088214 6794.2836 45681813. -0.0043464728 0.14577814 111.18565 12.974800