# # 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 = 36.130912 km # Date (UTC) = 2016-12-04T09:52:03.941 # Date (julian) = 2457726.91115672 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.6297 1.3480670e+11 0.043456536 0.031870004 -25.185390 54.843819 6500.8159 1.0824818e+11 0.051560188 0.032529256 -25.311208 54.756127 6503.0022 8.7714502e+10 0.059567350 0.033188508 -25.437043 54.668425 6505.1884 7.4025886e+10 0.067721748 0.033847760 -25.562878 54.580721 6507.3746 6.3725044e+10 0.076152652 0.034507011 -25.687536 54.493022 6509.5609 5.5820708e+10 0.085042961 0.035166263 -25.809541 54.405330 6511.7471 4.9650335e+10 0.094528468 0.035825515 -25.931547 54.317639 6513.9333 4.4054169e+10 0.10453022 0.036484767 -26.061062 54.222439 6516.1196 3.8789960e+10 0.11499687 0.037144018 -26.194032 54.123784 6518.3058 3.3982593e+10 0.12596888 0.037803270 -26.323127 54.027657 6520.4920 2.9959547e+10 0.13762038 0.038462522 -26.445132 53.936152 6522.6782 2.6755152e+10 0.14818673 0.039094857 -26.567138 53.844647 6524.8645 2.4091726e+10 0.15575932 0.039734069 -26.686370 53.755919 6527.0507 2.1841178e+10 0.16209492 0.040753281 -26.804578 53.668216 6529.2369 1.9808719e+10 0.16712900 0.042613198 -26.923920 53.579328 6531.4232 1.7757614e+10 0.17209070 0.045844597 -27.052600 53.480674 6533.6094 1.5814510e+10 0.17605024 0.047778560 -27.181280 53.382019 6535.7956 1.4035199e+10 0.17715609 0.047879159 -27.298852 53.288918 6537.9819 1.2615747e+10 0.17869261 0.049148125 -27.413233 53.197413 6540.1681 1.1461446e+10 0.17842747 0.050933508 -27.527614 53.106495 6542.3543 1.0464528e+10 0.17582957 0.051136754 -27.641994 53.018803 6544.5405 9.5672759e+09 0.17360514 0.052082845 -27.756375 52.931112 6546.7268 8.7404248e+09 0.17135232 0.053062541 -27.868730 52.841395 6548.9130 8.0410385e+09 0.16893469 0.053940299 -27.979298 52.749892 6551.0992 7.3962961e+09 0.16706188 0.055270582 -28.089866 52.658388 6553.2855 6.7796721e+09 0.16541092 0.055191570 -28.213007 52.560374 6555.4717 6.1907287e+09 0.16319569 0.054457033 -28.337416 52.461703 6557.6579 5.6439643e+09 0.16098737 0.053453722 -28.451633 52.367170 6559.8441 5.1807893e+09 0.15832543 0.052291900 -28.558389 52.275666 6562.0304 4.8027367e+09 0.15519538 0.050850997 -28.665144 52.184162 6564.2166 4.4745196e+09 0.15173865 0.048673431 -28.771900 52.096297 6566.4028 4.1797788e+09 0.14892139 0.046955000 -28.878655 52.008606 6568.5891 3.9049640e+09 0.14626958 0.045230169 -28.985411 51.919649 6570.7753 3.6583156e+09 0.14364439 0.044596355 -29.092165 51.828144 6572.9615 3.4290392e+09 0.14063924 0.043679514 -29.198920 51.736639 6575.1478 3.1924224e+09 0.13717111 0.042226462 -29.312095 51.637026 6577.3340 2.9484964e+09 0.13333636 0.039695762 -29.427908 51.534082 6579.5202 2.7108087e+09 0.12916705 0.036784512 -29.538867 51.436892 6581.7064 2.4991849e+09 0.12523366 0.035382688 -29.641824 51.349189 6583.8927 2.3324536e+09 0.12102279 0.034569834 -29.744780 51.261486 6586.0789 2.1892856e+09 0.11700211 0.033170276 -29.847726 51.170912 6588.2651 2.0580115e+09 0.11398143 0.033291388 -29.950669 51.079407 6590.4514 1.9389025e+09 0.11084766 0.030222460 -30.054746 50.986389 6592.6376 1.8117734e+09 0.10832880 0.027454228 -30.166268 50.883444 6594.8238 1.6747766e+09 0.10598719 0.025720284 -30.277790 50.780499 6597.0101 1.5479977e+09 0.10341137 0.025719555 -30.379388 50.686717 6599.1963 1.4377348e+09 0.10166521 0.024941536 -30.478518 50.595213 6601.3825 1.3480205e+09 0.10147016 0.027225831 -30.577650 50.503707 6603.5687 1.2731371e+09 0.10000773 0.026326580 -30.676793 50.412190 6605.7550 1.1920376e+09 0.099372088 0.027298404 -30.775936 50.320673 6607.9412 1.1180355e+09 0.097158047 0.023848477 -30.872954 50.231281 6610.1274 1.0546220e+09 0.093915908 0.024124736 -30.968271 50.143589 6612.3137 9.9196284e+08 0.091561518 0.024086396 -31.063589 50.055897 6614.4999 9.3270332e+08 0.090265712 0.023596088 -31.170021 49.953980 6616.6861 8.6687599e+08 0.088660919 0.023389985 -31.277254 49.851037 6618.8723 7.9840469e+08 0.087865014 0.024429523 -31.377321 49.754972 6621.0586 7.4384359e+08 0.086872569 0.025070030 -31.472639 49.663467 6623.2448 6.9637846e+08 0.085089551 0.024582524 -31.567956 49.571962 6625.4310 6.5823836e+08 0.083444826 0.025911963 -31.659542 49.480458 6627.6173 6.2537175e+08 0.081214896 0.025555252 -31.751046 49.388955 6629.8035 5.9116085e+08 0.079670156 0.025963830 -31.848146 49.293381 6631.9897 5.5690137e+08 0.077600242 0.026031302 -31.955380 49.190436 6634.1760 5.1632225e+08 0.076032749 0.026339678 -32.062139 49.087770 6636.3622 4.8147504e+08 0.074638120 0.026409101 -32.149842 48.996253 6638.5484 4.5028131e+08 0.073891600 0.025647749 -32.237545 48.904736 6640.7346 4.2313366e+08 0.074729165 0.025180767 -32.331373 48.808626 6642.9209 3.9956284e+08 0.074902036 0.025189380 -32.434317 48.705682 6645.1071 3.6904889e+08 0.074431374 0.025501859 -32.536185 48.603546 6647.2933 3.4394924e+08 0.073727476 0.026592222 -32.623876 48.512041 6649.4796 3.2446212e+08 0.073093130 0.026972631 -32.711568 48.420536 6651.6658 3.0859735e+08 0.072930518 0.026994401 -32.799260 48.329031 6653.8520 2.9367144e+08 0.072545967 0.027960675 -32.886953 48.237528 6656.0383 2.7933403e+08 0.070959913 0.028056993 -32.974646 48.146024 6658.2245 2.6066092e+08 0.069694845 0.030459206 -33.071381 48.045083 6660.4107 2.4153470e+08 0.068427576 0.031999316 -33.170036 47.942138 6662.5969 2.2529135e+08 0.067152838 0.032709351 -33.261403 47.844833 6664.7832 2.1190796e+08 0.066298974 0.029340492 -33.345293 47.753317 6666.9694 2.0326228e+08 0.065816829 0.027097495 -33.429182 47.661801 6669.1556 1.8933762e+08 0.064504038 0.028195858 -33.522198 47.560330 6671.3419 1.7794010e+08 0.064335653 0.026870220 -33.616564 47.457385 6673.5281 1.6462894e+08 0.063485754 0.028249017 -33.705270 47.360614 6675.7143 1.5183674e+08 0.061112466 0.031166544 -33.789149 47.269109 6677.9006 1.4262785e+08 0.059448539 0.031077991 -33.873029 47.177604 6680.0868 1.3249130e+08 0.059167250 0.029460156 -33.966522 47.075612 6682.2730 1.2841807e+08 0.059433393 0.030633133 -34.060886 46.972669 6684.4592 1.2176175e+08 0.059101158 0.032677396 -34.152740 46.867213 6686.6455 1.1937914e+08 0.057613673 0.034136628 -34.242818 46.759979 6688.8317 1.1189174e+08 0.054471194 0.033977175 -34.331323 46.656740 6691.0179 1.0804982e+08 0.053216053 0.032997033 -34.415212 46.565222 6693.2042 1.0387535e+08 0.052156806 0.031534050 -34.499102 46.473705 6695.3904 97419825. 0.051349009 0.029787764 -34.584190 46.374970 6697.5766 95060750. 0.050526412 0.030164237 -34.669977 46.272027 6699.7628 84254107. 0.048255479 0.030886542 -34.754046 46.172519 6701.9491 78912745. 0.045828777 0.032802012 -34.834112 46.081014 6704.1353 74291821. 0.045181873 0.036243996 -34.914177 45.989509 6706.3215 73183711. 0.043812359 0.039006013 -35.001026 45.890255 6708.5078 68904546. 0.039149542 0.040596518 -35.091103 45.787312 6710.6940 60867196. 0.0084614033 0.040632336 -35.179695 45.684368 6712.8802 55237629. 0.028829511 0.043464244 -35.265481 45.581422 6715.0665 53080910. 0.084399179 0.047446557 -35.351120 45.478654