# # 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 = 60.663587 km # Date (UTC) = 2014-01-24T10:00:53.392 # Date (julian) = 2456681.91728463 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.3081 8.7789454e+10 0.041065897 0.031773023 100.88022 48.121540 6500.7930 7.5666687e+10 0.049872045 0.032522341 101.02036 47.939518 6503.2779 6.6867434e+10 0.058837005 0.033271659 101.15688 47.757497 6505.7628 5.9665144e+10 0.068091772 0.034020977 101.29339 47.575473 6508.2477 5.3450918e+10 0.077737460 0.034770295 101.42991 47.395826 6510.7327 4.8048436e+10 0.087881732 0.035519613 101.56642 47.220305 6513.2176 4.3230701e+10 0.098570727 0.036268931 101.69754 47.039436 6515.7025 3.8778460e+10 0.10980779 0.037018249 101.82754 46.857441 6518.1874 3.4809225e+10 0.12169802 0.037767567 101.95756 46.675419 6520.6723 3.1311806e+10 0.13429831 0.038516886 102.08757 46.493396 6523.1572 2.8192351e+10 0.14437332 0.039218076 102.21759 46.311373 6525.6421 2.5366593e+10 0.15060215 0.039708931 102.34761 46.129352 6528.1270 2.2814516e+10 0.15675637 0.041543255 102.47324 45.947330 6530.6119 2.0567960e+10 0.16170888 0.044685399 102.59676 45.765308 6533.0968 1.8661625e+10 0.16674401 0.047560745 102.72027 45.583284 6535.5818 1.6931683e+10 0.16901923 0.047971932 102.84377 45.401284 6538.0667 1.5334617e+10 0.17171587 0.049189145 102.96726 45.219297 6540.5516 1.3884543e+10 0.17283587 0.051114682 103.09078 45.037275 6543.0365 1.2669634e+10 0.17201753 0.051391470 103.21429 44.855253 6545.5214 1.1686597e+10 0.17032101 0.052460238 103.33780 44.673229 6548.0063 1.0837723e+10 0.16839114 0.053669530 103.45493 44.491208 6550.4912 9.9952619e+09 0.16622590 0.055108357 103.57195 44.309186 6552.9761 9.1824734e+09 0.16428351 0.055341075 103.68896 44.127165 6555.4610 8.4441636e+09 0.16191364 0.054465980 103.79083 43.968699 6557.9460 7.8139867e+09 0.15965387 0.053273182 103.89226 43.809798 6560.4309 7.3122547e+09 0.15678120 0.051885832 104.00278 43.627774 6562.9158 6.8362507e+09 0.15403381 0.050008513 104.11701 43.445773 6565.4007 6.3543653e+09 0.15155865 0.047863417 104.23378 43.264008 6567.8856 5.8740217e+09 0.14980981 0.045868396 104.34429 43.088486 6570.3705 5.4683211e+09 0.14829239 0.044764034 104.44697 42.922638 6572.8554 5.1458556e+09 0.14641399 0.043740283 104.54169 42.766625 6575.3403 4.8835406e+09 0.14402102 0.042033256 104.64749 42.592373 6577.8252 4.6177293e+09 0.14133453 0.038924130 104.75800 42.410350 6580.3101 4.3197611e+09 0.13857008 0.036234135 104.86852 42.228328 6582.7951 4.0575892e+09 0.13606598 0.035077438 104.96569 42.062552 6585.2800 3.8216655e+09 0.13342986 0.033746948 105.05484 41.906538 6587.7649 3.6034475e+09 0.13093038 0.033327836 105.15632 41.728938 6590.2498 3.3661869e+09 0.12804240 0.030597428 105.26034 41.546915 6592.7347 3.1212303e+09 0.12485275 0.027359912 105.36435 41.364894 6595.2196 2.9198482e+09 0.12125292 0.025646345 105.45716 41.202466 6597.7045 2.7582799e+09 0.11778793 0.025500409 105.54632 41.046452 6600.1894 2.6262071e+09 0.11628212 0.025379301 105.64969 40.865538 6602.6743 2.5023351e+09 0.11532452 0.026941181 105.74745 40.694461 6605.1592 2.3840240e+09 0.11466607 0.026798639 105.83660 40.538448 6607.6442 2.2741319e+09 0.11308601 0.024435026 105.93098 40.366170 6610.1291 2.1588697e+09 0.11006941 0.024126300 106.02849 40.184148 6612.6140 2.0353201e+09 0.10827525 0.023862011 106.12600 40.002124 6615.0989 1.9245996e+09 0.10732199 0.023254574 106.21893 39.834375 6617.5838 1.8320704e+09 0.10625396 0.023632806 106.30808 39.678361 6620.0687 1.7444641e+09 0.10571870 0.024789339 106.39863 39.502735 6622.5536 1.6594480e+09 0.10434665 0.024610638 106.48804 39.326327 6625.0385 1.5799847e+09 0.10277387 0.025443582 106.57162 39.170313 6627.5234 1.4978911e+09 0.10072962 0.025519007 106.66107 39.003345 6630.0084 1.4249348e+09 0.099356058 0.025928322 106.75857 38.821322 6632.4933 1.3519277e+09 0.097427164 0.026091491 106.83887 38.667180 6634.9782 1.2806379e+09 0.095790213 0.026398195 106.91860 38.513957 6637.4631 1.2200047e+09 0.094018253 0.025934609 107.01609 38.331972 6639.9480 1.1579897e+09 0.093494189 0.025289241 107.10287 38.164259 6642.4329 1.1005768e+09 0.093236832 0.025169411 107.18088 38.008245 6644.9178 1.0454654e+09 0.091872535 0.025442802 107.26870 37.832597 6647.4027 9.9470193e+08 0.090215015 0.026649815 107.35689 37.656207 6649.8876 9.4921940e+08 0.088846818 0.026410129 107.43490 37.500193 6652.3725 9.0254781e+08 0.087920012 0.027353023 107.51566 37.333207 6654.8575 8.5670384e+08 0.086639950 0.027670942 107.60016 37.151186 6657.3424 8.1539239e+08 0.084570199 0.029298243 107.67893 36.997068 6659.8273 7.7473369e+08 0.083168465 0.031662028 107.75809 36.843818 6662.3122 7.3984408e+08 0.081726611 0.032869117 107.84910 36.661797 6664.7971 7.0326288e+08 0.080974595 0.029289551 107.92988 36.494095 6667.2820 6.6999477e+08 0.080672994 0.027207043 108.00232 36.338078 6669.7669 6.3880980e+08 0.079890153 0.027568027 108.08388 36.162403 6672.2518 6.0967392e+08 0.079728601 0.027025562 108.16577 35.987256 6674.7367 5.8502766e+08 0.078415218 0.029576276 108.23820 35.836813 6677.2216 5.6063224e+08 0.076083783 0.032043124 108.31064 35.684014 6679.7066 5.3968414e+08 0.075923559 0.029683905 108.38307 35.528000 6682.1915 5.1376678e+08 0.076840304 0.030570831 108.46308 35.355669 6684.6764 4.9089082e+08 0.076893156 0.032688415 108.54650 35.176010 6687.1613 4.6979109e+08 0.075037057 0.034252948 108.61893 35.019996 6689.6462 4.5047541e+08 0.072273171 0.033434342 108.69493 34.858227 6692.1311 4.3031050e+08 0.071054953 0.032613081 108.77944 34.682706 6694.6160 4.1232776e+08 0.070134353 0.030397644 108.85060 34.521946 6697.1009 3.9682994e+08 0.069488587 0.030104038 108.91746 34.365932 6699.5858 3.8308977e+08 0.067769340 0.031049870 108.99504 34.184900 6702.0707 3.7064725e+08 0.065697201 0.032933224 109.07069 34.016259 6704.5557 3.5322312e+08 0.065983763 0.036450412 109.14313 33.865816 6707.0406 3.4021794e+08 0.065524539 0.040181015 109.21907 33.695509 6709.5255 3.2500285e+08 0.064617779 0.040798312 109.29607 33.515845 6712.0104 3.0876993e+08 0.062364660 0.041849251 109.36293 33.359830 6714.4953 2.9432315e+08 0.060173046 0.047340645 109.43310 33.198041 6716.9802 2.8128107e+08 0.058078940 0.049845122 109.51110 33.022520 6719.4651 2.7206581e+08 0.056025410 0.050927939 109.58067 32.861780 6721.9500 2.6206504e+08 0.056327524 0.050590148 109.64753 32.705767 6724.4349 2.5094566e+08 0.053210514 0.046294613 109.72512 32.530966 6726.9199 2.3825001e+08 0.050167636 0.040959664 109.79603 32.363731 6729.4048 2.2932807e+08 0.049564605 0.040775643 109.85732 32.207718 6731.8897 2.1755686e+08 0.047617587 0.043520639 109.92914 32.039433 6734.3746 2.0690872e+08 0.046928196 0.049331062 110.00561 31.865726 6736.8595 1.9793773e+08 0.048925290 0.053604374 110.06690 31.709712 6739.3444 1.8953567e+08 0.049624309 0.063248037 110.13315 31.547909 6741.8293 1.8423590e+08 0.047586250 0.068123945 110.21116 31.372388 6744.3142 1.7919463e+08 0.042590676 0.078036457 110.27649 31.211662 6746.7991 1.7495753e+08 0.038357053 0.069696438 110.33778 31.055648 6749.2840 1.7018530e+08 0.036922199 0.072200161 110.40892 30.880834 6751.7690 1.6321861e+08 0.032936209 0.074036790 110.48043 30.702547 6754.2539 1.5298191e+08 0.031188446 0.075805223 110.55193 30.520524 6756.7388 1.4706699e+08 0.028158423 0.076067890 110.61438 30.366520 6759.2237 1.4033911e+08 0.028898211 0.075873934 110.67662 30.213755 6761.7086 1.3594535e+08 0.031624117 0.078026769 110.74813 30.038234 6764.1935 1.3156525e+08 0.035750774 0.079492556 110.81397 29.873525 6766.6784 1.2584117e+08 0.036741164 0.081248341 110.87526 29.717512 6769.1633 1.2127929e+08 0.031730412 0.084850403 110.94430 29.546707 6771.6482 1.1574002e+08 0.027333923 0.090877403 111.01437 29.371213 6774.1331 1.0962873e+08 0.022950257 0.096904403 111.07937 29.195692 6776.6181 1.0599560e+08 0.018549544 0.10293140 111.14184 29.033488 6779.1030 1.0383831e+08 0.014141190 0.10895840 111.20313 28.877475 6781.5879 1.0186099e+08 0.0097353215 0.11498540 111.26773 28.704137 6784.0728 99072200. 0.0053426374 0.12101240 111.33501 28.528615 6786.5577 94497909. 0.00096662429 0.12703940 111.40652 28.353093 6789.0426 90038967. -0.0034029197 0.13306640 111.46521 28.193401 6791.5275 86453998. -0.0077720203 0.13909340 111.52109 28.037061 6794.0124 80326832. -0.012109246 0.14512040 111.58610 27.861540 6796.4973 77710758. -0.016469532 0.15114740 111.65111 27.686018 6798.9823 74320596. -0.020814474 0.15717440 111.71611 27.510497 6801.4672 74029864. -0.025180243 0.16320140 111.78722 27.335008 6803.9521 73297296. -0.029535667 0.16922840 111.85611 27.159507 6806.4370 68675912. -0.033863256 0.17525540 111.92112 26.983985 6808.9219 67649442. -0.038210874 0.18128240 111.97810 26.825305 6811.4068 64209150. -0.042541059 0.18730940 112.03401 26.667952 6813.8917 64719909. -0.046899268 0.19333640 112.09252 26.492431 6816.3766 60114172. -0.051220064 0.19936340 112.15448 26.316910 6818.8615 57941805. -0.055551594 0.20539040 112.21949 26.141388 6821.3464 56490603. -0.059878306 0.21141740 112.28449 25.965868 6823.8314 55427474. -0.064206108 0.21744440 112.34950 25.790347 6826.3163 55230641. -0.068547445 0.22347140 112.41451 25.614826 6828.8012 48493372. -0.072884457 0.22949840 112.47356 25.439335 6831.2861 46179578. -0.077300170 0.23552540 112.53451 25.263835 6833.7710 43859428. -0.081809472 0.24155240 112.59951 25.088313 6836.2559 44153179. -0.086450332 0.24757940 112.65907 24.912793 6838.7408 44027362. -0.091825480 0.25360640 112.71953 24.737272 6841.2257 41234488. -0.10209208 0.25963340 112.78454 24.561751 6843.7106 42657108. -0.10177299 0.26566040 112.84459 24.386230 6846.1955 44028822. -0.096689828 0.27168740 112.90310 24.210708