# # 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 = 38.261907 km # Date (UTC) = 2016-12-11T08:46:47.844 # Date (julian) = 2457733.86583153 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6516.3931 4.8083294e+10 0.13525225 0.037226500 -11.449889 51.477950 6518.0015 4.5218128e+10 0.14360362 0.037711507 -11.528439 51.413427 6519.6099 4.1990989e+10 0.15192441 0.038196515 -11.606988 51.348904 6521.2183 3.8874993e+10 0.16026684 0.038681523 -11.687514 51.282404 6522.8267 3.5901710e+10 0.16636444 0.039133724 -11.768858 51.215084 6524.4351 3.3130548e+10 0.17041267 0.039581519 -11.850202 51.147765 6526.0435 3.0614545e+10 0.17261158 0.039713653 -11.930750 51.080445 6527.6519 2.8392160e+10 0.17661834 0.041189729 -12.006484 51.013125 6529.2603 2.6309837e+10 0.17846954 0.042650350 -12.082218 50.945805 6530.8687 2.4420022e+10 0.17981302 0.045044796 -12.157952 50.878485 6532.4771 2.2720774e+10 0.18221134 0.047082717 -12.235305 50.812784 6534.0854 2.1155387e+10 0.18212575 0.047968460 -12.313844 50.748270 6535.6938 1.9642217e+10 0.18138059 0.047923310 -12.392383 50.683756 6537.3022 1.8256478e+10 0.18165825 0.048827719 -12.470879 50.619198 6538.9106 1.7003652e+10 0.18034218 0.049600113 -12.546634 50.551881 6540.5190 1.5862992e+10 0.17946239 0.051099307 -12.622378 50.484553 6542.1274 1.4789979e+10 0.17737142 0.051050618 -12.698122 50.417225 6543.7358 1.3788953e+10 0.17497221 0.051575015 -12.772608 50.349901 6545.3442 1.2819045e+10 0.17309139 0.052458651 -12.845537 50.282581 6546.9526 1.1938689e+10 0.17103338 0.053248380 -12.918467 50.215262 6548.5610 1.1111016e+10 0.16862193 0.053835185 -12.991396 50.147942 6550.1694 1.0359781e+10 0.16730113 0.055027780 -13.066799 50.080623 6551.7778 9.6804186e+09 0.16542042 0.055508775 -13.142534 50.013304 6553.3862 9.0444091e+09 0.16337717 0.055140925 -13.218268 49.945985 6554.9946 8.4663137e+09 0.16178944 0.054853252 -13.293114 49.879555 6556.6030 7.9241713e+09 0.15931740 0.053924473 -13.366042 49.815040 6558.2114 7.4180423e+09 0.15719672 0.053059166 -13.438971 49.750525 6559.8198 6.9515664e+09 0.15495519 0.052294649 -13.511900 49.686009 6561.4282 6.5137295e+09 0.15204763 0.051161677 -13.582728 49.619380 6563.0366 6.1269690e+09 0.14968158 0.049886041 -13.652862 49.552052 6564.6450 5.7674726e+09 0.14721420 0.048479289 -13.722995 49.484724 6566.2534 5.4254093e+09 0.14465479 0.047039546 -13.793652 49.417398 6567.8618 5.1141197e+09 0.14284560 0.045888530 -13.866582 49.350078 6569.4702 4.8172922e+09 0.14070250 0.044883026 -13.939511 49.282758 6571.0786 4.5471247e+09 0.13856184 0.044481815 -14.012440 49.215439 6572.6870 4.2807989e+09 0.13654924 0.043836745 -14.083624 49.148120 6574.2954 4.0263877e+09 0.13386704 0.042713141 -14.153749 49.080801 6575.9038 3.7916785e+09 0.13126735 0.041467948 -14.223873 49.013482 6577.5122 3.5770830e+09 0.12871204 0.039415891 -14.293998 48.946163 6579.1206 3.3824421e+09 0.12542176 0.037004222 -14.364122 48.878843 6580.7290 3.1980270e+09 0.12281210 0.035847094 -14.434246 48.811524 6582.3374 3.0355256e+09 0.12070622 0.035201992 -14.504370 48.744204 6583.9457 2.8669503e+09 0.11857968 0.034542971 -14.573119 48.676880 6585.5541 2.7080868e+09 0.11707429 0.033527747 -14.640447 48.609552 6587.1625 2.5586167e+09 0.11565873 0.033194383 -14.707776 48.542225 6588.7709 2.4170475e+09 0.11402989 0.033122473 -14.775104 48.474897 6590.3793 2.2924230e+09 0.11223012 0.030356443 -14.842424 48.407577 6591.9877 2.1695951e+09 0.11025103 0.028087369 -14.909743 48.340257 6593.5961 2.0554758e+09 0.10831163 0.026548001 -14.977063 48.272937 6595.2045 1.9469240e+09 0.10630430 0.025644781 -15.044382 48.205618 6596.8129 1.8419072e+09 0.10413378 0.025723578 -15.111702 48.138299 6598.4213 1.7491288e+09 0.10247380 0.025206012 -15.179021 48.070980 6600.0297 1.6662964e+09 0.10187625 0.025050968 -15.246340 48.003661 6601.6381 1.5808867e+09 0.10120370 0.027346205 -15.313660 47.936342 6603.2465 1.5029688e+09 0.099970518 0.026517340 -15.380979 47.869022 6604.8549 1.4235624e+09 0.099175469 0.026578892 -15.448298 47.801703 6606.4633 1.3575529e+09 0.098130317 0.026671420 -15.514968 47.734381 6608.0717 1.2990174e+09 0.095977211 0.023730476 -15.579491 47.667052 6609.6801 1.2364869e+09 0.093411265 0.023907953 -15.644014 47.599723 6611.2885 1.1778748e+09 0.090932298 0.024774481 -15.708537 47.532395 6612.8969 1.1239985e+09 0.089938228 0.023650629 -15.773054 47.465073 6614.5053 1.0788226e+09 0.088655892 0.023592368 -15.837568 47.397754 6616.1137 1.0325302e+09 0.087106173 0.023300142 -15.902083 47.330435 6617.7221 9.8631078e+08 0.086533980 0.023678653 -15.966598 47.263116 6619.3305 9.3941793e+08 0.085988569 0.024605653 -16.031112 47.195796 6620.9389 9.0132840e+08 0.085497421 0.025069749 -16.095627 47.128476 6622.5473 8.6851671e+08 0.084636227 0.024612327 -16.160141 47.061156 6624.1557 8.3834261e+08 0.083336919 0.024945639 -16.224656 46.993837 6625.7641 8.0554722e+08 0.082752817 0.026309365 -16.289170 46.926519 6627.3725 7.7331604e+08 0.081308505 0.025460687 -16.353684 46.859200 6628.9809 7.4213541e+08 0.080596256 0.026101334 -16.418198 46.791881 6630.5893 7.0928588e+08 0.079562440 0.025929754 -16.487485 46.716381 6632.1977 6.7278560e+08 0.078575118 0.026056046 -16.556909 46.640645 6633.8061 6.3210863e+08 0.077683810 0.026292981 -16.626333 46.564909 6635.4144 6.0075516e+08 0.076827658 0.026461940 -16.689567 46.495926 6637.0228 5.6970096e+08 0.075909092 0.026150223 -16.751285 46.428598 6638.6312 5.4523278e+08 0.075232390 0.025644141 -16.813003 46.361271 6640.2396 5.2387108e+08 0.075626845 0.025241332 -16.874719 46.293945 6641.8480 4.9854790e+08 0.075788020 0.025151180 -16.936428 46.226625 6643.4564 4.7970206e+08 0.075185123 0.025261534 -16.998138 46.159305 6645.0648 4.5942496e+08 0.074576818 0.025482054 -17.059847 46.091985 6646.6732 4.3709416e+08 0.073701978 0.026268630 -17.119668 46.024666 6648.2816 4.2066832e+08 0.072945122 0.027152803 -17.178572 45.957347 6649.8900 3.9976395e+08 0.072493569 0.026406841 -17.237477 45.890028 6651.4984 3.8167533e+08 0.072097604 0.026866129 -17.296382 45.822709 6653.1068 3.6288143e+08 0.071966033 0.027580196 -17.355294 45.755380 6654.7152 3.4522711e+08 0.071266562 0.027731540 -17.414206 45.688051 6656.3236 3.3385087e+08 0.069998351 0.028307445 -17.473118 45.620723 6657.9320 3.2428788e+08 0.069178381 0.029982205 -17.532026 45.553399 6659.5404 3.1399232e+08 0.068170016 0.031721871 -17.590930 45.486079 6661.1488 2.9978025e+08 0.067303201 0.032610735 -17.649834 45.418759 6662.7572 2.8231319e+08 0.066673686 0.032619441 -17.708738 45.351440 6664.3656 2.6487477e+08 0.066029822 0.030868409 -17.774850 45.275885 6665.9740 2.5140353e+08 0.066254813 0.026951218 -17.841119 45.200149 6667.5824 2.4022374e+08 0.065886761 0.027317377 -17.907388 45.124414 6669.1908 2.3037594e+08 0.065061986 0.028159758 -17.967694 45.053222 6670.7992 2.2038861e+08 0.065289975 0.026958386 -18.026598 44.983098 6672.4076 2.1272721e+08 0.065095721 0.027115837 -18.085502 44.912974 6674.0160 2.0409773e+08 0.064454757 0.028968264 -18.143720 44.843536 6675.6244 1.9709245e+08 0.062840863 0.030994251 -18.199820 44.776216 6677.2328 1.9160990e+08 0.061530440 0.032027319 -18.255919 44.708896 6678.8412 1.8275994e+08 0.061048415 0.030374009 -18.312019 44.641576 6680.4496 1.7482928e+08 0.061801861 0.029538495 -18.372884 44.568539 6682.0580 1.6331995e+08 0.062333431 0.030468823 -18.435997 44.492804 6683.6664 1.5248358e+08 0.062541316 0.032165127 -18.499110 44.417069 6685.2747 1.4443402e+08 0.062312238 0.032995040 -18.558646 44.345626 6686.8831 1.3868066e+08 0.060943322 0.034274912 -18.614753 44.278297 6688.4915 1.3368438e+08 0.058924063 0.033898655 -18.670860 44.210968 6690.0999 1.2874637e+08 0.057836820 0.033104411 -18.726966 44.143639 6691.7083 1.2747245e+08 0.057093433 0.032834142 -18.783066 44.076320 6693.3167 1.2165494e+08 0.056573390 0.031495430 -18.839166 44.009001 6694.9251 1.2141237e+08 0.056325065 0.029964408 -18.895266 43.941683 6696.5335 1.1654708e+08 0.056068411 0.029897455 -18.952834 43.871158 6698.1419 1.0784888e+08 0.055448317 0.030412623 -19.012792 43.795423 6699.7503 99530808. 0.054298794 0.030898101 -19.072749 43.719687 6701.3587 94599687. 0.052955785 0.031935786 -19.131889 43.645734 6702.9671 92868084. 0.053043123 0.033648975 -19.187988 43.578414 6704.5755 94236733. 0.053304122 0.036460159 -19.244087 43.511095 6706.1839 94228282. 0.053343991 0.038766481 -19.300186 43.443775 6707.7923 92337982. 0.053226279 0.040073330 -19.358781 43.371012 6709.4007 91561018. 0.052645932 0.040877678 -19.418738 43.295277 6711.0091 88929970. 0.051406085 0.040702584 -19.478696 43.219542 6712.6175 80815534. 0.049870835 0.042976441 -19.535473 43.146484 6714.2259 75275965. 0.048213984 0.047320391 -19.588775 43.076350 6715.8343 73382160. 0.047055034 0.048231875 -19.642076 43.006217 6717.4427 72796952. 0.045583569 0.049846886 -19.695378 42.936083 6719.0511 75496623. 0.043946393 0.051321307 -19.751875 42.860833 6720.6595 74475985. 0.044363045 0.050343354 -19.808676 42.785097 6722.2679 69095113. 0.043829576 0.050274040 -19.865477 42.709361 6723.8763 60309160. 0.041639631 0.049857656 -19.919668 42.639891 6725.4847 54398557. 0.037415789 0.041273270 -19.972963 42.572572 6727.0931 49401335. 0.034874653 0.040836395 -20.026258 42.505253 6728.7015 49556475. 0.032304706 0.040622303 -20.080181 42.436426 6730.3099 48858177. 0.018349599 0.040803758 -20.136982 42.360690 6733.5267 46561203. 0.035050048 0.046783664 -20.250494 42.209340 6735.1351 47110369. 0.055409948 0.049436799 -20.301010 42.141986