# # 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 = 57.188962 km # Date (UTC) = 2015-01-19T09:25:01.082 # Date (julian) = 2457041.89237363 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.5706 6.9809530e+10 0.051449429 0.032756810 112.84581 41.662192 6504.0461 6.3212015e+10 0.061624434 0.033503313 112.94136 41.506764 6506.5217 5.7060170e+10 0.072124789 0.034249815 113.04128 41.351334 6508.9973 5.1525704e+10 0.082989364 0.034996318 113.14540 41.185221 6511.4729 4.6119780e+10 0.094128157 0.035742820 113.25550 41.003883 6513.9484 4.0918007e+10 0.10554016 0.036489323 113.35194 40.845043 6516.4240 3.6548466e+10 0.11746275 0.037235825 113.44631 40.689987 6518.8996 3.3045772e+10 0.13001890 0.037982328 113.54067 40.540109 6521.3752 2.9960287e+10 0.14307784 0.038728831 113.63504 40.388759 6523.8507 2.7233732e+10 0.15123946 0.039389963 113.72941 40.233331 6526.3263 2.4751843e+10 0.15718562 0.040010175 113.82120 40.077903 6528.8019 2.2507925e+10 0.16257290 0.042078611 113.91002 39.922473 6531.2774 2.0473477e+10 0.16695818 0.045632507 114.00251 39.767045 6533.7530 1.8605713e+10 0.17062642 0.047839598 114.09688 39.611617 6536.2286 1.6950929e+10 0.17170140 0.047995030 114.18646 39.456189 6538.7042 1.5477798e+10 0.17360011 0.049499573 114.27528 39.300762 6541.1797 1.4096392e+10 0.17363073 0.051268240 114.36409 39.145332 6543.6553 1.2819824e+10 0.17233808 0.051553883 114.45148 38.989902 6546.1309 1.1654515e+10 0.17006168 0.052572225 114.53475 38.834475 6548.6065 1.0658486e+10 0.16797473 0.053848756 114.62055 38.679048 6551.0820 9.7852524e+09 0.16544639 0.055264546 114.70936 38.523620 6553.5576 8.9760332e+09 0.16335391 0.055054766 114.79818 38.368191 6556.0332 8.2239068e+09 0.16056525 0.054008248 114.88699 38.212761 6558.5088 7.5068849e+09 0.15827761 0.052805785 114.97106 38.062092 6560.9843 6.8820131e+09 0.15508279 0.051386813 115.05378 37.912957 6563.4599 6.3778139e+09 0.15240778 0.049396370 115.12664 37.776940 6565.9355 5.9619365e+09 0.14965556 0.047256156 115.19952 37.640883 6568.4110 5.5957708e+09 0.14782575 0.045393813 115.28270 37.485628 6570.8866 5.2131392e+09 0.14604145 0.044550242 115.36596 37.330200 6573.3622 4.8306835e+09 0.14407209 0.043366831 115.44923 37.174773 6575.8378 4.4764686e+09 0.14162146 0.041534166 115.53250 37.019344 6578.3133 4.1529710e+09 0.13897055 0.038154817 115.61576 36.863914 6580.7889 3.8706978e+09 0.13610755 0.035791685 115.69575 36.708501 6583.2645 3.6096723e+09 0.13382071 0.034887796 115.77345 36.553101 6585.7401 3.3796052e+09 0.13111607 0.033379114 115.85553 36.402046 6588.2156 3.1732110e+09 0.12882277 0.033307920 115.93880 36.252169 6590.6912 2.9748938e+09 0.12559877 0.029776318 116.01659 36.096821 6593.1668 2.7868766e+09 0.12246914 0.026947168 116.09431 35.941394 6595.6424 2.6045752e+09 0.11878281 0.025690185 116.17202 35.785964 6598.1179 2.4411678e+09 0.11556905 0.025350864 116.24602 35.637961 6600.5935 2.3122583e+09 0.11397742 0.026209996 116.31403 35.501945 6603.0691 2.2008131e+09 0.11233698 0.026622384 116.38518 35.361437 6605.5446 2.0906579e+09 0.11135451 0.027121956 116.46290 35.211559 6608.0202 1.9776148e+09 0.10942768 0.023731837 116.54060 35.058796 6610.4958 1.8599663e+09 0.10635089 0.024476695 116.61830 34.903394 6612.9714 1.7568362e+09 0.10502277 0.023594987 116.69601 34.747974 6615.4469 1.6551121e+09 0.10384685 0.023265283 116.77373 34.592547 6617.9225 1.5523367e+09 0.10321237 0.023745104 116.84634 34.442221 6620.3981 1.4602321e+09 0.10269750 0.024895479 116.91802 34.293977 6622.8737 1.3864028e+09 0.10132428 0.024525455 116.98602 34.157958 6625.3492 1.3266241e+09 0.099775075 0.025814340 117.05428 34.020789 6627.8248 1.2709900e+09 0.097804343 0.025635419 117.12644 33.865362 6630.3004 1.2090126e+09 0.096260992 0.025929042 117.19860 33.711372 6632.7759 1.1419814e+09 0.094592936 0.026125388 117.27075 33.561520 6635.2515 1.0809496e+09 0.092939588 0.026437507 117.34290 33.409126 6637.7271 1.0252112e+09 0.091426745 0.025805303 117.41507 33.253698 6640.2027 9.7334149e+08 0.091143305 0.025245855 117.48723 33.101903 6642.6782 9.2070038e+08 0.090897524 0.025179451 117.55940 32.952025 6645.1538 8.7371931e+08 0.089602243 0.025523741 117.62387 32.813971 6647.6294 8.3474266e+08 0.088056367 0.026769156 117.68702 32.677955 6650.1050 8.0307067e+08 0.086821280 0.026279266 117.75733 32.530926 6652.5805 7.6945549e+08 0.085881694 0.027410250 117.82949 32.381041 6655.0561 7.3031608e+08 0.084385333 0.027633400 117.89615 32.225658 6657.5317 6.9295244e+08 0.082227196 0.029517844 117.96382 32.071297 6660.0073 6.5937665e+08 0.080695879 0.031632591 118.03597 31.921446 6662.4828 6.2908135e+08 0.079248112 0.032773377 118.10596 31.769421 6664.9584 5.9919058e+08 0.078649956 0.028699341 118.17257 31.613992 6667.4340 5.6968431e+08 0.078307541 0.027262864 118.23918 31.461829 6669.9095 5.3950226e+08 0.077711333 0.027421534 118.30580 31.311953 6672.3851 5.1187730e+08 0.077571038 0.027102822 118.36969 31.172981 6674.8607 4.8950833e+08 0.076236256 0.029680843 118.43284 31.036964 6677.3363 4.7039764e+08 0.074018481 0.031880180 118.49851 30.890853 6679.8118 4.5336604e+08 0.073960679 0.029596903 118.56512 30.740976 6682.2874 4.3290968e+08 0.074830770 0.030644137 118.63172 30.585979 6684.7630 4.1240150e+08 0.074872559 0.032692810 118.69833 30.431269 6687.2386 3.9459784e+08 0.072930022 0.034209853 118.76494 30.281390 6689.7141 3.7562131e+08 0.070256816 0.033373190 118.82975 30.131512 6692.1897 3.5848417e+08 0.069015909 0.032545035 118.89081 29.981635 6694.6653 3.3849831e+08 0.068151631 0.030328603 118.95477 29.828860 6697.1409 3.2119090e+08 0.067507623 0.030109090 119.02139 29.673431 6699.6164 3.0759424e+08 0.065771186 0.031021648 119.08800 29.522003 6702.0920 2.8981257e+08 0.063783398 0.032950191 119.15461 29.372127 6704.5676 2.7645368e+08 0.064002784 0.036456261 119.21612 29.222250 6707.0431 2.6122735e+08 0.063513252 0.040180646 119.27685 29.074576 6709.5187 2.4982571e+08 0.062434687 0.040802613 119.33514 28.943436 6711.9943 2.4428019e+08 0.059897572 0.041823464 119.39359 28.810868 6714.4699 2.3965486e+08 0.057414568 0.047338733 119.45465 28.655441 6716.9454 2.3000545e+08 0.055153891 0.049793904 119.51571 28.501441 6719.4210 2.1967687e+08 0.052945889 0.050969847 119.57677 28.351564 6721.8966 2.0893864e+08 0.053142318 0.050574044 119.63783 28.201686 6724.3722 1.9953489e+08 0.050040830 0.046818907 119.69889 28.051809 6726.8477 1.9531408e+08 0.046660996 0.040959013 119.75996 27.901932 6729.3233 1.8539370e+08 0.045937533 0.040829937 119.82102 27.752054 6731.7989 1.7666824e+08 0.043789082 0.043339938 119.88208 27.602176 6734.2745 1.6913501e+08 0.042760075 0.049337087 119.94314 27.452298 6736.7500 1.6439135e+08 0.044588277 0.053190514 120.00420 27.302422 6739.2256 1.5892291e+08 0.045240265 0.063102639 120.06526 27.151158 6741.7012 1.5202593e+08 0.043207699 0.067758469 120.12632 26.995729 6744.1767 1.4296152e+08 0.038008324 0.077930118 120.18738 26.842790 6746.6523 1.3608298e+08 0.034226058 0.071403371 120.24844 26.692913 6749.1279 1.3563806e+08 0.032530614 0.072242917 120.30591 26.543036 6751.6035 1.3241185e+08 0.028483231 0.073966818 120.36142 26.393160 6754.0790 1.2819752e+08 0.026401759 0.076086372 120.42163 26.243283 6756.5546 1.1829720e+08 0.023284079 0.075594000 120.48314 26.092306 6759.0302 1.0837846e+08 0.023561596 0.075827238 120.55437 25.917443 6761.5058 1.0481212e+08 0.025615530 0.078010010 120.61775 25.755071 6763.9813 1.0056844e+08 0.030232895 0.079426422 120.67326 25.605194 6766.4569 96265571. 0.031573930 0.080747268 120.72877 25.455317 6768.9325 91450704. 0.026827639 0.084211291 120.78428 25.305441 6771.4080 90270686. 0.022516406 0.090294837 120.84477 25.155563 6773.8836 90456443. 0.018329477 0.096299190 120.90530 25.005686 6776.3592 87625844. 0.014037767 0.10230354 120.96081 24.855809 6778.8348 84437440. 0.0097291298 0.10830790 121.01632 24.707563 6781.3103 79541960. 0.0053450763 0.11431225 121.07183 24.563236 6783.7859 80078774. 0.0011710794 0.12031660 121.13190 24.403869 6786.2615 75555011. -0.0032274773 0.12632096 121.19666 24.229007 6788.7371 69582805. -0.0077412961 0.13232531 121.25265 24.077843 6791.2126 66335821. -0.012183624 0.13832966 121.30816 23.927967 6793.6882 64048804. -0.016649988 0.14433402 121.36367 23.778090 6796.1638 65061693. -0.021012552 0.15033837 121.41918 23.628212 6798.6394 62674694. -0.025712670 0.15634272 121.47469 23.478335 6801.1149 59078809. -0.030720880 0.16234708 121.53523 23.318388 6803.5905 56853528. -0.035974085 0.16835143 121.59996 23.150079 6806.0661 53596514. -0.041937694 0.17435578 121.65550 23.000150 6808.5416 50554902. -0.049062983 0.18036014 121.71283 22.845340 6811.0172 46954231. -0.059831427 0.18636449 121.77760 22.670479 6813.4928 44709321. -0.098464825 0.19236885 121.83268 22.511961 6815.9684 45357463. -0.075367602 0.19837320 121.88264 22.362084 6818.4439 46323190. -0.022088503 0.20437755 121.93733 22.216940