# # 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 = 57.229884 km # Date (UTC) = 2015-12-21T09:57:59.555 # Date (julian) = 2457377.91527263 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.6760 6.6159475e+10 0.028963971 0.030979317 107.26668 28.011765 6498.2019 5.9971005e+10 0.037180868 0.031740985 107.32580 27.890258 6500.7277 5.4077832e+10 0.045481768 0.032502653 107.38746 27.771323 6503.2536 4.8823686e+10 0.054004443 0.033264320 107.44848 27.652388 6505.7795 4.4271176e+10 0.062938849 0.034025988 107.50575 27.533453 6508.3053 4.0469076e+10 0.072512894 0.034787655 107.56301 27.414518 6510.8312 3.7306975e+10 0.082882394 0.035549323 107.62027 27.295583 6513.3570 3.4257202e+10 0.093936757 0.036310991 107.67754 27.176648 6515.8829 3.1537307e+10 0.10586124 0.037072658 107.73133 27.064935 6518.4088 2.9273461e+10 0.11886879 0.037834326 107.78287 26.957883 6520.9346 2.7311430e+10 0.13292702 0.038595993 107.83491 26.849436 6523.4605 2.5530065e+10 0.14374676 0.039293247 107.89217 26.726096 6525.9864 2.3646796e+10 0.15082471 0.039669643 107.94943 26.602756 6528.5122 2.1778545e+10 0.15873442 0.041848835 108.00670 26.483008 6531.0381 2.0001557e+10 0.16461935 0.045284123 108.06396 26.364073 6533.5640 1.8368194e+10 0.17075318 0.047759252 108.12123 26.245138 6536.0898 1.6923074e+10 0.17314271 0.047870866 108.17849 26.126204 6538.6157 1.5608637e+10 0.17597803 0.049456487 108.23576 26.007265 6541.1415 1.4389064e+10 0.17573640 0.051280625 108.29303 25.888314 6543.6674 1.3266899e+10 0.17381870 0.051557059 108.35028 25.769363 6546.1933 1.2235284e+10 0.17110142 0.052623562 108.40314 25.650429 6548.7191 1.1295132e+10 0.16886717 0.053882406 108.45600 25.531494 6551.2450 1.0462357e+10 0.16670614 0.055321751 108.51210 25.412559 6553.7709 9.6788377e+09 0.16444837 0.054947562 108.56937 25.293623 6556.2967 8.9684958e+09 0.16193641 0.053969500 108.62458 25.174688 6558.8226 8.3162712e+09 0.15927210 0.052538351 108.67744 25.055754 6561.3485 7.7097013e+09 0.15627736 0.051200967 108.73116 24.937674 6563.8743 7.1696590e+09 0.15323260 0.048916975 108.78843 24.823130 6566.4002 6.6875602e+09 0.15090373 0.046956499 108.84571 24.708585 6568.9261 6.2413456e+09 0.14878475 0.044920399 108.89890 24.589980 6571.4519 5.8388228e+09 0.14714884 0.044379848 108.95176 24.471045 6573.9778 5.4790519e+09 0.14452832 0.042872836 109.00462 24.352110 6576.5036 5.1465103e+09 0.14204624 0.040791688 109.05748 24.233174 6579.0295 4.8521990e+09 0.13866375 0.037054275 109.11033 24.114239 6581.5554 4.5703709e+09 0.13586373 0.035428434 109.16320 23.995305 6584.0812 4.2963478e+09 0.13295572 0.034471258 109.21606 23.876368 6586.6071 4.0493456e+09 0.13013988 0.033163448 109.26893 23.757418 6589.1330 3.8224764e+09 0.12717017 0.032782187 109.32179 23.638468 6591.6588 3.6110068e+09 0.12349096 0.028458498 109.37465 23.523252 6594.1847 3.4198013e+09 0.11963979 0.026071136 109.42751 23.408722 6596.7106 3.2435261e+09 0.11562055 0.025724043 109.48037 23.291661 6599.2364 3.0807298e+09 0.11299164 0.024943950 109.53323 23.172726 6601.7623 2.9263884e+09 0.11262203 0.027404683 109.58811 23.049264 6604.2881 2.7500166e+09 0.11148950 0.026242370 109.64757 22.915460 6606.8140 2.5763511e+09 0.11102623 0.026041207 109.70515 22.787175 6609.3399 2.4162229e+09 0.10804507 0.023806891 109.75802 22.672630 6611.8657 2.2838789e+09 0.10548675 0.024406369 109.81081 22.558011 6614.3916 2.1696791e+09 0.10458593 0.023670692 109.85926 22.439077 6616.9175 2.0588458e+09 0.10324684 0.023426296 109.90772 22.320143 6619.4433 1.9557256e+09 0.10270695 0.024632883 109.95946 22.201208 6621.9692 1.8487779e+09 0.10170528 0.024768202 110.01232 22.082272 6624.4951 1.7530177e+09 0.099901964 0.025127314 110.06309 21.965436 6627.0209 1.6640127e+09 0.097855695 0.025324894 110.11154 21.850906 6629.5468 1.5874991e+09 0.096584003 0.026010244 110.16091 21.735465 6632.0727 1.5145451e+09 0.094583863 0.026041057 110.21377 21.616514 6634.5985 1.4408911e+09 0.092901163 0.026370501 110.26664 21.497563 6637.1244 1.3736644e+09 0.091102130 0.026100493 110.31537 21.382752 6639.6502 1.3138038e+09 0.090267134 0.025395662 110.36383 21.268223 6642.1761 1.2523908e+09 0.090278124 0.025158903 110.41632 21.140851 6644.7020 1.1818665e+09 0.089000873 0.025419474 110.47083 21.007046 6647.2278 1.1130116e+09 0.087519941 0.026557738 110.52142 20.885739 6649.7537 1.0524458e+09 0.086236767 0.026594747 110.56987 20.771211 6652.2796 1.0041702e+09 0.085398015 0.027327441 110.62000 20.656675 6654.8054 9.6254857e+08 0.084164864 0.027693105 110.67286 20.542130 6657.3313 9.1909385e+08 0.082139758 0.029285402 110.72525 20.427110 6659.8572 8.8363900e+08 0.080724244 0.031655794 110.77371 20.308175 6662.3830 8.5070365e+08 0.079283021 0.032829373 110.82216 20.189240 6664.9089 8.1229661e+08 0.078628712 0.028880512 110.87570 20.061995 6667.4348 7.6918860e+08 0.078345953 0.027263149 110.93021 19.933146 6669.9606 7.2000478e+08 0.077863238 0.027369085 110.97975 19.816044 6672.4865 6.7587542e+08 0.077797869 0.027161571 111.02821 19.701514 6675.0123 6.4142799e+08 0.076441696 0.029821997 111.07424 19.586984 6677.5382 6.1373583e+08 0.074420048 0.031593102 111.11829 19.472455 6680.0641 5.9297823e+08 0.074570963 0.029455252 111.16527 19.352527 6682.5899 5.6816789e+08 0.075429969 0.030875275 111.21978 19.218724 6685.1158 5.3986287e+08 0.075421318 0.032827149 111.27271 19.089970 6687.6417 5.0934354e+08 0.073273213 0.033985039 111.32117 18.975424 6690.1675 4.8166606e+08 0.071028210 0.033096665 111.36963 18.860879 6692.6934 4.6588917e+08 0.069861934 0.031960136 111.41809 18.746349 6695.2193 4.4967081e+08 0.069126569 0.029819199 111.46654 18.631819 6697.7451 4.3071222e+08 0.068320291 0.030185561 111.51579 18.506949 6700.2710 4.0772267e+08 0.066476502 0.030868714 111.56535 18.378101 6702.7968 3.8800102e+08 0.065373177 0.033513016 111.61413 18.259337 6705.3227 3.7266931e+08 0.065446505 0.037242320 111.66258 18.144807 6707.8486 3.5651407e+08 0.064988727 0.040065269 111.71152 18.024061 6710.3744 3.4009476e+08 0.063526689 0.040569786 111.76107 17.895212 6712.9003 3.2060697e+08 0.061279976 0.043501520 111.81017 17.772317 6715.4262 3.0991527e+08 0.059016475 0.047814460 111.85864 17.657772 6717.9520 2.9894921e+08 0.056699614 0.049815381 111.90726 17.541133 6720.4779 2.8778470e+08 0.055740623 0.050364394 111.95681 17.412285 6723.0038 2.7718158e+08 0.054952130 0.049371040 112.00701 17.283437 6725.5296 2.6267685e+08 0.050457518 0.041245190 112.06152 17.154590 6728.0555 2.5088707e+08 0.049377130 0.039706743 112.11488 17.027327 6730.5814 2.3944017e+08 0.047649459 0.041176006 112.15892 16.912797 6733.1072 2.3302262e+08 0.046016476 0.044506408 112.20297 16.798267 6735.6331 2.2663894e+08 0.046545285 0.049965492 112.25165 16.671702 6738.1589 2.1849563e+08 0.047895381 0.058196145 112.30121 16.542853 6740.6848 2.0734136e+08 0.046975715 0.065220237 112.35077 16.414005 6743.2107 1.9434881e+08 0.042643514 0.072468622 112.40033 16.285157 6745.7365 1.8411032e+08 0.039511681 0.078876520 112.44989 16.156293 6748.2624 1.7518108e+08 0.034987512 0.068397391 112.49945 16.027426 6750.7883 1.6790825e+08 0.031757508 0.073350122 112.54814 15.913312 6753.3141 1.6005441e+08 0.028342657 0.073993863 112.59660 15.803188 6755.8400 1.5378025e+08 0.025305330 0.074237063 112.64562 15.683382 6758.3659 1.4843903e+08 0.024151597 0.074478972 112.69518 15.554533 6760.8917 1.4273636e+08 0.024141546 0.077761739 112.74474 15.425685 6763.4176 1.3822904e+08 0.029357039 0.077709523 112.79429 15.296836 6765.9434 1.3156152e+08 0.031152380 0.079703423 112.84385 15.170373 6768.4693 1.2620354e+08 0.026699795 0.082544719 112.89341 15.046481 6770.9952 1.2008327e+08 0.021199821 0.089293439 112.94067 14.920292 6773.5210 1.1192564e+08 0.015933604 0.095419769 112.98527 14.791445 6776.0469 1.0783337e+08 0.010854352 0.10154610 113.03208 14.662597 6778.5728 1.0303697e+08 0.0057076491 0.10767243 113.08164 14.533748 6781.0986 99890432. 0.00067539824 0.11379876 113.13119 14.407018 6783.6245 98355943. -0.0042093509 0.11992509 113.18075 14.283126 6786.1504 91741134. -0.0096032813 0.12605142 113.23031 14.157195 6788.6762 91964979. -0.014278638 0.13217775 113.27987 14.028328 6791.2021 85933615. -0.019693569 0.13830408 113.32943 13.901411 6793.7280 82372853. -0.024855919 0.14443042 113.37899 13.777519 6796.2538 78758541. -0.030066848 0.15055675 113.42908 13.644881 6798.7797 72677873. -0.035812080 0.15668308 113.48005 13.497623 6801.3055 71427731. -0.040708592 0.16280941 113.53016 13.364587 6803.8314 68020031. -0.046124002 0.16893574 113.57972 13.240694 6806.3573 67389294. -0.050963537 0.17506207 113.62635 13.113873 6808.8831 67372476. -0.055707502 0.18118840 113.67095 12.985026 6811.4090 65092562. -0.061122699 0.18731473 113.71840 12.859017 6813.9349 62761405. -0.066751724 0.19344106 113.76795 12.735125 6816.4607 61671917. -0.072253292 0.19956739 113.81829 12.601407 6818.9866 57166039. -0.079374006 0.20569372 113.86927 12.459812 6821.5125 54207203. -0.086714847 0.21182005 113.91912 12.328281 6824.0383 50628847. -0.095663117 0.21794639 113.96868 12.199432 6826.5642 48220158. -0.10616539 0.22407272 114.01933 12.060749 6829.0900 47381735. -0.12081273 0.23019905 114.07029 11.919281 6831.6159 46044887. -0.17797134 0.23632538 114.11985 11.795367 6834.1418 45126496. -0.14289692 0.24245171 114.16941 11.671473 6839.1935 43391700. -0.048655607 0.25470437 114.27134 11.378497