# # 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 = 42.309295 km # Date (UTC) = 2017-01-07T10:43:08.553 # Date (julian) = 2457760.94662677 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6512.3467 5.5908795e+10 0.11489401 0.036006333 95.467370 33.574735 6514.3189 4.9783553e+10 0.12465152 0.036601027 95.525411 33.466570 6516.2910 4.4572879e+10 0.13453967 0.037195721 95.583451 33.358230 6518.2632 3.9863127e+10 0.14451340 0.037790415 95.637830 33.255620 6520.2353 3.6282236e+10 0.15472923 0.038385110 95.685980 33.162759 6522.2074 3.3347155e+10 0.16454273 0.038971572 95.734130 33.069897 6524.1796 3.0672947e+10 0.16940367 0.039490757 95.786856 32.969873 6526.1517 2.8024228e+10 0.17295653 0.039827152 95.844897 32.861533 6528.1239 2.5354548e+10 0.17711218 0.041540747 95.902937 32.753193 6530.0960 2.2917098e+10 0.18028842 0.043963106 95.957578 32.648250 6532.0682 2.0679542e+10 0.18223355 0.046741123 96.011748 32.543779 6534.0403 1.8731097e+10 0.18231235 0.047955828 96.064152 32.442715 6536.0124 1.7120211e+10 0.18110648 0.047801627 96.112308 32.349841 6537.9846 1.5765121e+10 0.18169172 0.049149409 96.160465 32.256966 6539.9567 1.4590757e+10 0.18101186 0.050801711 96.210947 32.158112 6541.9289 1.3428418e+10 0.17813641 0.051025308 96.265117 32.049771 6543.9010 1.2266730e+10 0.17523672 0.051618365 96.319287 31.941430 6545.8731 1.1137152e+10 0.17212102 0.052463390 96.373457 31.836193 6547.8453 1.0056932e+10 0.16973389 0.053608812 96.427627 31.731722 6549.8174 9.1252607e+09 0.16712542 0.054799305 96.480486 31.629778 6551.7896 8.3569478e+09 0.16451289 0.055512903 96.528637 31.536916 6553.7617 7.7466353e+09 0.16182417 0.054952164 96.576787 31.444054 6555.7339 7.2306640e+09 0.15932694 0.054236751 96.626805 31.346391 6557.7060 6.7355520e+09 0.15709520 0.053423586 96.680975 31.238051 6559.6781 6.2334431e+09 0.15430927 0.052310638 96.735145 31.129711 6561.6503 5.7599453e+09 0.15124635 0.051052236 96.786506 31.024178 6563.6224 5.3109279e+09 0.14831310 0.049208366 96.836806 30.919707 6565.5946 4.9048374e+09 0.14590747 0.047643260 96.886803 30.816874 6567.5667 4.5686476e+09 0.14386060 0.046138021 96.934960 30.724000 6569.5389 4.2982327e+09 0.14162594 0.044887495 96.983117 30.631125 6571.5110 4.0655928e+09 0.13943165 0.044363713 97.031776 30.535536 6573.4831 3.8351748e+09 0.13684545 0.043269778 97.082079 30.431065 6575.4553 3.5905366e+09 0.13432904 0.041917922 97.132382 30.326595 6577.4274 3.3410280e+09 0.13160302 0.039549001 97.185197 30.222123 6579.3996 3.1065968e+09 0.12848994 0.036850841 97.239367 30.117652 6581.3717 2.8957289e+09 0.12569377 0.035484052 97.292920 30.013713 6583.3438 2.7172594e+09 0.12315537 0.034847628 97.337630 29.917412 6585.3160 2.5619059e+09 0.12044057 0.033718149 97.382340 29.821111 6587.2881 2.4356199e+09 0.11768411 0.033222208 97.427933 29.723521 6589.2603 2.3006285e+09 0.11476948 0.032529623 97.478236 29.619049 6591.2324 2.1652057e+09 0.11153066 0.028939659 97.528539 29.514577 6593.2046 2.0244802e+09 0.10898489 0.026912046 97.578840 29.410106 6595.1767 1.8854047e+09 0.10649993 0.025641895 97.629140 29.305636 6597.1488 1.7640453e+09 0.10425398 0.025675759 97.679440 29.201165 6599.1210 1.6660405e+09 0.10268218 0.024937007 97.724218 29.108162 6601.0931 1.5869812e+09 0.10268233 0.027089546 97.768935 29.015287 6603.0653 1.5184079e+09 0.10169524 0.026624636 97.813791 28.921465 6605.0374 1.4477270e+09 0.10098850 0.026696425 97.860224 28.816994 6607.0096 1.3714900e+09 0.099851254 0.025688137 97.906656 28.712522 6608.9817 1.2957263e+09 0.097040046 0.023706415 97.955012 28.608051 6610.9538 1.2277279e+09 0.094348321 0.024914346 98.005312 28.503579 6612.9260 1.1653805e+09 0.093406084 0.023628898 98.055612 28.399108 6614.8981 1.0994442e+09 0.092357602 0.023321724 98.105915 28.294637 6616.8703 1.0368206e+09 0.091073537 0.023418886 98.156218 28.190166 6618.8424 9.7666525e+08 0.090489328 0.024406910 98.203554 28.089508 6620.8145 9.2931925e+08 0.089770040 0.025029684 98.244825 27.996646 6622.7867 8.9570053e+08 0.088344002 0.024548603 98.286095 27.903783 6624.7588 8.5485098e+08 0.086858359 0.025268507 98.329538 27.806036 6626.7310 8.1274854e+08 0.085078053 0.025659578 98.375970 27.701564 6628.7031 7.7030366e+08 0.083912733 0.025988566 98.422403 27.597093 6630.6753 7.2634249e+08 0.082441188 0.025929966 98.472070 27.492622 6632.6474 6.8888825e+08 0.081067029 0.026109973 98.522370 27.388150 6634.6195 6.5085751e+08 0.079735169 0.026372035 98.570397 27.286601 6636.5917 6.2014857e+08 0.078430066 0.026319979 98.611675 27.193727 6638.5638 5.9694804e+08 0.077664931 0.025647078 98.652954 27.100854 6640.5360 5.7404544e+08 0.078299992 0.025205076 98.696009 27.003981 6642.5081 5.5003960e+08 0.078473128 0.025172489 98.742442 26.899510 6644.4802 5.2183689e+08 0.077855080 0.025395511 98.788875 26.795038 6646.4524 4.9164582e+08 0.077210359 0.026154320 98.835306 26.693508 6648.4245 4.6183161e+08 0.076579593 0.027248469 98.881735 26.592906 6650.3967 4.3367474e+08 0.076391268 0.026346047 98.928166 26.491624 6652.3688 4.0595150e+08 0.076266176 0.027351998 98.974598 26.387152 6654.3410 3.8207523e+08 0.075748773 0.027890973 99.021031 26.282681 6656.3131 3.5964406e+08 0.074321046 0.028298226 99.067464 26.178210 6658.2852 3.4182252e+08 0.073198026 0.030566966 99.113896 26.073738 6660.2574 3.2168993e+08 0.072166190 0.031859949 99.160257 25.969365 6662.2295 3.0424668e+08 0.071029120 0.032915492 99.198099 25.876487 6664.2017 2.9003164e+08 0.070009081 0.031468183 99.235930 25.783625 6666.1738 2.7436740e+08 0.070191274 0.026942465 99.274616 25.689992 6668.1460 2.6298920e+08 0.069506325 0.027599935 99.321056 25.589375 6670.1181 2.4666968e+08 0.069181190 0.027273920 99.367496 25.488758 6672.0902 2.3581530e+08 0.068925665 0.026931904 99.413932 25.386154 6674.0624 2.2900776e+08 0.068058109 0.029007414 99.460364 25.281683 6676.0345 2.1785560e+08 0.065921733 0.031735974 99.506797 25.177211 6678.0067 2.0936623e+08 0.064963775 0.030932155 99.549627 25.072740 6679.9788 2.0083230e+08 0.065058533 0.029458929 99.592189 24.968269 6681.9509 1.9599153e+08 0.065659336 0.030386912 99.636092 24.865138 6683.9231 1.8912695e+08 0.065877051 0.032541382 99.682522 24.764536 6685.8952 1.7627064e+08 0.065506899 0.033650425 99.728951 24.663934 6687.8674 1.6314202e+08 0.063394930 0.033859156 99.772434 24.560384 6689.8395 1.5158881e+08 0.061458994 0.033260323 99.814997 24.455912 6691.8117 1.4074542e+08 0.060469696 0.032809765 99.857560 24.351441 6693.7838 1.3774960e+08 0.059472721 0.031335196 99.900122 24.246970 6695.7559 1.3433908e+08 0.059168806 0.029720616 99.942685 24.142499 6697.7281 1.3163535e+08 0.058332574 0.030183406 99.985248 24.040323 6699.7002 1.3086835e+08 0.056775894 0.030944322 100.02781 23.939721 6701.6724 1.2370380e+08 0.054937084 0.032396005 100.07041 23.839081 6703.6445 1.1944663e+08 0.054887219 0.035288011 100.11684 23.734613 6705.6167 1.1588550e+08 0.054739468 0.037764894 100.16327 23.630142 6707.5888 1.0935907e+08 0.054140351 0.040102482 100.20806 23.527312 6709.5609 1.0665910e+08 0.053074666 0.040775759 100.25063 23.426710 6711.5331 1.0410792e+08 0.051055653 0.041298733 100.29319 23.326107 6713.5052 99278423. 0.048875021 0.045513908 100.33576 23.222243 6715.4774 92918775. 0.046825760 0.047866824 100.37833 23.117757 6717.4495 86586527. 0.044496383 0.049846464 100.41990 23.014264 6719.4216 82180830. 0.042389541 0.050969241 100.45859 22.913662 6721.3938 81494759. 0.042569449 0.050422550 100.49729 22.813060 6723.3659 84202658. 0.041380039 0.049573031 100.53858 22.709860 6725.3381 78429662. 0.036971902 0.041364840 100.58114 22.605389 6727.3102 71662387. 0.035072794 0.040547087 100.62370 22.501254 6729.2824 62502934. 0.033422463 0.040857227 100.66627 22.400652 6731.2545 54750484. 0.030402924 0.042256531 100.70883 22.300050 6733.2266 53889391. 0.028954297 0.045154824 100.75139 22.199448 6735.1988 50456886. 0.028184864 0.049504459 100.79395 22.098845 6737.1709 49696207. 0.028773855 0.054680062 100.83651 21.998243 6739.1431 51791087. 0.028740845 0.063001643 100.87552 21.894088 6741.1152 52177671. 0.025812544 0.066087284 100.91422 21.789617 6743.0874 51241610. 0.018737066 0.071636733 100.95420 21.686437 6745.0595 50264460. 0.0074371841 0.078591898 100.99676 21.585835 6747.0316 49921805. -0.045191621 0.067350269 101.03933 21.485233 6749.0038 50265953. -0.0037392114 0.072276898 101.08313 21.373863 6750.9759 46414479. 0.079861345 0.073670559 101.12735 21.258887