# # 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 = 49.839013 km # Date (UTC) = 2015-12-01T10:39:05.401 # Date (julian) = 2457357.94381252 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.9097 5.5507174e+10 0.077103061 0.034366803 96.754884 25.998604 6509.2703 5.0692108e+10 0.088161624 0.035078644 96.807077 25.876820 6511.6309 4.6221921e+10 0.099447140 0.035790484 96.856480 25.761549 6513.9916 4.2411717e+10 0.11107331 0.036502325 96.906617 25.644562 6516.3522 3.8800730e+10 0.12292686 0.037214165 96.962193 25.514880 6518.7128 3.5316243e+10 0.13498081 0.037926006 97.017769 25.385197 6521.0734 3.2146325e+10 0.14730734 0.038637846 97.067426 25.269334 6523.4341 2.9474134e+10 0.15589377 0.039286692 97.116835 25.154048 6525.7947 2.7147049e+10 0.16119428 0.039691520 97.169522 25.031115 6528.1553 2.4810267e+10 0.16650854 0.041565688 97.225101 24.901433 6530.5159 2.2564632e+10 0.17015404 0.044550992 97.276851 24.777113 6532.8766 2.0655983e+10 0.17348356 0.047416464 97.322136 24.661842 6535.2372 1.9053625e+10 0.17469674 0.048121407 97.367422 24.546571 6537.5978 1.7543463e+10 0.17529656 0.048967066 97.422411 24.417710 6539.9584 1.6002652e+10 0.17587109 0.050803788 97.477986 24.288028 6542.3191 1.4580343e+10 0.17414366 0.051123371 97.525496 24.169642 6544.6797 1.3394182e+10 0.17273851 0.052195722 97.570781 24.054370 6547.0403 1.2386069e+10 0.17056232 0.053302694 97.619719 23.935629 6549.4009 1.1424773e+10 0.16766226 0.054374867 97.675298 23.810578 6551.7616 1.0449760e+10 0.16525248 0.055503071 97.729973 23.684618 6554.1222 9.4957224e+09 0.16227445 0.054834944 97.780927 23.554916 6556.4828 8.6381031e+09 0.15986463 0.053942143 97.831673 23.425747 6558.8434 7.9184087e+09 0.15710702 0.052520590 97.876958 23.310476 6561.2041 7.3356546e+09 0.15405104 0.051272122 97.922243 23.195205 6563.5647 6.8316642e+09 0.15119990 0.049275149 97.970970 23.071175 6565.9253 6.3211669e+09 0.14858816 0.047267687 98.021917 22.941493 6568.2859 5.8430484e+09 0.14688685 0.045508813 98.072169 22.820124 6570.6466 5.4412755e+09 0.14513923 0.044649678 98.121569 22.708970 6573.0072 5.1008088e+09 0.14315650 0.043651708 98.170999 22.597452 6575.3678 4.7702843e+09 0.14073195 0.042005669 98.221946 22.467769 6577.7284 4.4350975e+09 0.13814354 0.039076161 98.272893 22.338086 6580.0891 4.1235166e+09 0.13547229 0.036438438 98.315425 22.224348 6582.4497 3.8662759e+09 0.13284812 0.035171420 98.356592 22.113194 6584.8103 3.6416239e+09 0.13033582 0.034074098 98.401983 21.994037 6587.1709 3.4049833e+09 0.12789408 0.033196245 98.452937 21.864336 6589.5316 3.1819659e+09 0.12535100 0.031991383 98.502346 21.738569 6591.8922 2.9904660e+09 0.12214659 0.028195167 98.547631 21.623298 6594.2528 2.8212263e+09 0.11888026 0.026033735 98.592916 21.508027 6596.6135 2.6652456e+09 0.11524543 0.025724485 98.642978 21.384505 6598.9741 2.5023458e+09 0.11230427 0.024942107 98.693925 21.259454 6601.3347 2.3472771e+09 0.11147295 0.027203316 98.740997 21.143916 6603.6953 2.2214367e+09 0.10948659 0.026251641 98.786282 21.032762 6606.0560 2.1078726e+09 0.10872391 0.027403416 98.831830 20.916876 6608.4166 1.9983711e+09 0.10619443 0.023721357 98.878144 20.787193 6610.7772 1.8845510e+09 0.10319047 0.024745581 98.924905 20.657956 6613.1378 1.7600604e+09 0.10225067 0.023624161 98.975852 20.532906 6615.4985 1.6456292e+09 0.10111681 0.023266868 99.026798 20.407855 6617.8591 1.5494139e+09 0.10043350 0.023724075 99.068585 20.291956 6620.2197 1.4656582e+09 0.099874044 0.024837998 99.109759 20.176670 6622.5803 1.3921392e+09 0.098550465 0.024603527 99.155901 20.056419 6624.9410 1.3125123e+09 0.097121185 0.025366000 99.206848 19.931368 6627.3016 1.2376702e+09 0.095145747 0.025433308 99.254379 19.811171 6629.6622 1.1757179e+09 0.093929137 0.025989375 99.295546 19.700017 6632.0228 1.1196380e+09 0.092028604 0.026035084 99.336714 19.588863 6634.3835 1.0682191e+09 0.090389109 0.026354814 99.382621 19.460658 6636.7441 1.0104431e+09 0.088746330 0.026260793 99.428939 19.330975 6639.1047 9.5313170e+08 0.087564525 0.025590648 99.475254 19.204819 6641.4653 8.9594322e+08 0.088092704 0.025149881 99.521569 19.079768 6643.8260 8.4392586e+08 0.087047334 0.025317329 99.567267 18.963074 6646.1866 8.0076138e+08 0.085726515 0.026016733 99.612559 18.851905 6648.5472 7.6160116e+08 0.084265646 0.027330593 99.658027 18.738331 6650.9078 7.2683848e+08 0.083346665 0.026463068 99.704341 18.613280 6653.2685 6.9036050e+08 0.082606088 0.027662732 99.750656 18.488229 6655.6291 6.4954368e+08 0.080886509 0.027870159 99.796970 18.363179 6657.9897 6.1354836e+08 0.079297850 0.030049154 99.843284 18.238128 6660.3503 5.8268356e+08 0.077890079 0.031944444 99.885198 18.124959 6662.7110 5.5847915e+08 0.076632264 0.032645375 99.926366 18.013805 6665.0716 5.3759267e+08 0.076054677 0.028429817 99.969728 17.896731 6667.4322 5.1025767e+08 0.075699074 0.027262220 100.01605 17.771681 6669.7928 4.8308061e+08 0.075052532 0.027541393 100.06236 17.646630 6672.1535 4.5498999e+08 0.075012222 0.026968555 100.10868 17.521579 6674.5141 4.3001238e+08 0.074007172 0.029388467 100.15399 17.398024 6676.8747 4.1696981e+08 0.071603152 0.032277479 100.19105 17.286855 6679.2354 4.0056223e+08 0.071077519 0.030073288 100.22810 17.175686 6681.5960 3.8272966e+08 0.072162307 0.030114582 100.27144 17.055092 6683.9566 3.6385321e+08 0.072508293 0.032590491 100.31776 16.930042 6686.3172 3.4340908e+08 0.071693743 0.033945652 100.36408 16.804991 6688.6779 3.2982420e+08 0.068686701 0.033941662 100.41039 16.679940 6691.0385 3.1335212e+08 0.067364013 0.032992184 100.45671 16.554889 6693.3991 2.9687037e+08 0.066374632 0.031467171 100.50302 16.429838 6695.7597 2.8200963e+08 0.065933780 0.029719920 100.54840 16.304787 6698.1204 2.6797197e+08 0.065022062 0.030383019 100.59009 16.179737 6700.4810 2.5483818e+08 0.063106645 0.031024476 100.63175 16.055276 6702.8416 2.4017304e+08 0.062246182 0.033548757 100.67292 15.944122 6705.2022 2.2639593e+08 0.062408494 0.037028136 100.71409 15.832969 6707.5629 2.1631328e+08 0.062022537 0.040106197 100.75557 15.716131 6709.9235 2.0875702e+08 0.061000971 0.040545162 100.79725 15.595711 6712.2841 1.9926909e+08 0.058851942 0.042357456 100.84104 15.473187 6714.6447 1.9433088e+08 0.056745097 0.047351880 100.88736 15.348137 6717.0054 1.8449364e+08 0.054741549 0.049873937 100.93231 15.223081 6719.3660 1.7543427e+08 0.052742561 0.051022124 100.97400 15.098012 6721.7266 1.6742703e+08 0.053142335 0.050522831 101.01632 14.972945 6724.0872 1.5926608e+08 0.051010027 0.049198163 101.06263 14.847895 6726.4479 1.5705656e+08 0.047207217 0.040955407 101.10895 14.722845 6728.8085 1.5387210e+08 0.046660532 0.040773995 101.15073 14.602320 6731.1691 1.4894210e+08 0.044801420 0.042086596 101.19242 14.481901 6733.5297 1.4206403e+08 0.043548638 0.046800427 101.23410 14.357692 6735.8904 1.3194719e+08 0.044880474 0.050238623 101.27579 14.232641 6738.2510 1.2355423e+08 0.046282964 0.058702921 101.32052 14.110642 6740.6116 1.1835096e+08 0.045651785 0.065095207 101.36684 13.990224 6742.9722 1.1159374e+08 0.042154548 0.070979808 101.41084 13.867490 6745.3329 1.0811941e+08 0.038872672 0.078706822 101.45252 13.742439 6747.6935 1.0239703e+08 0.034581084 0.067122417 101.49421 13.618966 6750.0541 99432199. 0.032036744 0.072096546 101.53589 13.498547 6752.4147 1.0133986e+08 0.029211039 0.073654537 101.57757 13.377287 6754.7754 99601425. 0.027616326 0.074966575 101.61926 13.252236 6757.1360 94648608. 0.024929880 0.076327338 101.66108 13.126902 6759.4966 91150134. 0.026044757 0.075939798 101.70871 12.989277 6761.8572 89546739. 0.029324398 0.078039050 101.75556 12.853329 6764.2179 82389239. 0.033059878 0.079493723 101.79724 12.728278 6766.5785 75550912. 0.034161567 0.081022327 101.83892 12.603228 6768.9391 61528977. 0.029587703 0.084235224 101.88061 12.482672 6771.2998 59754475. 0.025305470 0.090032171 101.92230 12.362235 6773.6604 65220788. 0.020989859 0.095757727 101.96399 12.241813 6776.0210 66067005. 0.016618971 0.10148328 102.00567 12.121393 6778.3816 63862396. 0.011604741 0.10720884 102.05126 11.986210 6780.7423 52427440. 0.0021586910 0.11293439 102.09890 11.843292 6783.1029 46802043. 0.0016561815 0.11865995 102.14197 11.717631 6785.4635 46027891. 0.0074800989 0.12438550 102.18366 11.597212