# # 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 = 63.163536 km # Date (UTC) = 2014-11-26T09:30:08.544 # Date (julian) = 2456987.89593222 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.0922 1.3013748e+11 0.045447307 0.032009469 113.18464 28.134257 6501.5753 1.0975672e+11 0.054692245 0.032758229 113.24428 27.996668 6504.0583 9.3065973e+10 0.063963796 0.033506988 113.30275 27.860259 6506.5414 7.9892831e+10 0.073385118 0.034255748 113.36121 27.723851 6509.0244 6.9389375e+10 0.083090786 0.035004508 113.41967 27.587444 6511.5075 6.0709786e+10 0.093176300 0.035753268 113.47813 27.447858 6513.9906 5.3483257e+10 0.10373624 0.036502028 113.53659 27.306578 6516.4736 4.7363462e+10 0.11482669 0.037250788 113.59505 27.168206 6518.9567 4.2067115e+10 0.12649246 0.037999548 113.65352 27.031777 6521.4397 3.7505288e+10 0.13878999 0.038748308 113.71199 26.895360 6523.9228 3.3571523e+10 0.14614023 0.039407827 113.77045 26.758953 6526.4059 3.0062268e+10 0.15175773 0.040093587 113.82650 26.620136 6528.8889 2.6992228e+10 0.15671077 0.042147666 113.88009 26.478855 6531.3720 2.4281809e+10 0.16121014 0.045770102 113.93583 26.339728 6533.8550 2.1852534e+10 0.16481144 0.047882953 113.99429 26.203321 6536.3381 1.9694299e+10 0.16639332 0.048093007 114.05085 26.066913 6538.8212 1.7774181e+10 0.16859469 0.049556542 114.10444 25.930505 6541.3042 1.6112330e+10 0.16936735 0.051227873 114.15967 25.794096 6543.7873 1.4647087e+10 0.16879190 0.051588517 114.21813 25.657688 6546.2703 1.3344153e+10 0.16741940 0.052686969 114.27521 25.519897 6548.7534 1.2162920e+10 0.16570634 0.053892635 114.32880 25.378617 6551.2365 1.1100694e+10 0.16375434 0.055318750 114.38352 25.238464 6553.7195 1.0168963e+10 0.16174492 0.054973377 114.44198 25.102056 6556.2026 9.3429882e+09 0.15941226 0.053983344 114.49957 24.965647 6558.6856 8.5994881e+09 0.15721549 0.052655063 114.55315 24.829239 6561.1687 7.9288053e+09 0.15446196 0.051289554 114.60674 24.692828 6563.6517 7.2848384e+09 0.15206009 0.049174443 114.66034 24.556400 6566.1348 6.7306663e+09 0.14998580 0.047106624 114.71350 24.421088 6568.6179 6.2716299e+09 0.14862543 0.045203695 114.76113 24.299838 6571.1009 5.8813335e+09 0.14737166 0.044475710 114.80877 24.178588 6573.5840 5.5534538e+09 0.14565855 0.043188847 114.86095 24.045754 6576.0670 5.2301502e+09 0.14360793 0.041294224 114.91454 23.909347 6578.5501 4.9170434e+09 0.14129916 0.037780937 114.96813 23.772939 6581.0332 4.6219083e+09 0.13889212 0.035586567 115.02172 23.636530 6583.5162 4.3393912e+09 0.13703829 0.034760378 115.07531 23.500122 6585.9993 4.0674498e+09 0.13476748 0.033171871 115.12890 23.363714 6588.4823 3.8250651e+09 0.13300454 0.033218852 115.17953 23.227306 6590.9654 3.6035992e+09 0.13010455 0.029266274 115.22825 23.090898 6593.4485 3.4032544e+09 0.12736634 0.026685291 115.27966 22.954490 6595.9315 3.2183449e+09 0.12374901 0.025720172 115.33325 22.818082 6598.4146 3.0378825e+09 0.12111948 0.025209232 115.38441 22.684104 6600.8976 2.8695136e+09 0.12045096 0.026835246 115.43313 22.552547 6603.3807 2.7089278e+09 0.11936659 0.026437904 115.48404 22.418815 6605.8638 2.5569684e+09 0.11915307 0.027389663 115.53763 22.282408 6608.3468 2.4098414e+09 0.11710189 0.023723202 115.58929 22.146000 6610.8299 2.2677755e+09 0.11418348 0.024795902 115.63800 22.009591 6613.3129 2.1406337e+09 0.11339222 0.023688405 115.68635 21.878385 6615.7960 2.0408191e+09 0.11210707 0.023276022 115.73398 21.757136 6618.2790 1.9607254e+09 0.11154605 0.023981511 115.78165 21.635537 6620.7621 1.8837516e+09 0.11082899 0.025012786 115.83037 21.504001 6623.2452 1.7999064e+09 0.10933393 0.024582656 115.87908 21.372465 6625.7282 1.7118670e+09 0.10800267 0.026266596 115.92780 21.236148 6628.2113 1.6249503e+09 0.10625957 0.025788879 115.97652 21.099740 6630.6943 1.5474019e+09 0.10455677 0.025930013 116.02976 20.963332 6633.1774 1.4767848e+09 0.10294528 0.026183226 116.08335 20.826924 6635.6605 1.4084529e+09 0.10113920 0.026498834 116.13267 20.694783 6638.1435 1.3493513e+09 0.099701629 0.025665389 116.18139 20.563248 6640.6266 1.2887109e+09 0.099590290 0.025193989 116.23012 20.427683 6643.1096 1.2345113e+09 0.098940234 0.025209173 116.27884 20.291254 6645.5927 1.1804764e+09 0.097393134 0.025729341 116.32756 20.158597 6648.0758 1.1255301e+09 0.095877895 0.027014997 116.37627 20.027060 6650.5588 1.0730283e+09 0.094654542 0.026383166 116.42499 19.892025 6653.0419 1.0205369e+09 0.093824841 0.027547042 116.47371 19.755616 6655.5249 9.7721675e+08 0.091904279 0.027827120 116.52242 19.622451 6658.0080 9.3476815e+08 0.090048899 0.030075256 116.57114 19.490916 6660.4911 8.9606249e+08 0.088425092 0.032072341 116.61687 19.356393 6662.9741 8.5467473e+08 0.087146200 0.032497738 116.66072 19.219984 6665.4572 8.1654877e+08 0.086614648 0.027798040 116.70729 19.086305 6667.9402 7.8230408e+08 0.085985286 0.027448820 116.75601 18.954769 6670.4233 7.5058767e+08 0.085397810 0.027132530 116.80473 18.820760 6672.9063 7.2018895e+08 0.085031654 0.027404935 116.85344 18.684353 6675.3894 6.9035975e+08 0.083063851 0.030544214 116.89994 18.550161 6677.8725 6.6178016e+08 0.081346530 0.031117917 116.94379 18.418625 6680.3555 6.3531953e+08 0.081547017 0.029518189 116.98960 18.287088 6682.8386 6.0852701e+08 0.082241096 0.031065253 117.03831 18.155552 6685.3216 5.8289858e+08 0.081887882 0.033044572 117.08703 18.022305 6687.8047 5.5981508e+08 0.079404871 0.033894110 117.13576 17.885877 6690.2878 5.3516189e+08 0.077079852 0.033082886 117.18303 17.750902 6692.7708 5.1414292e+08 0.075865061 0.031870221 117.22688 17.619366 6695.2539 4.9179000e+08 0.075066507 0.029812839 117.27192 17.487829 6697.7369 4.7134685e+08 0.074146710 0.030184526 117.32063 17.356293 6700.2200 4.5282679e+08 0.072155320 0.030830897 117.36841 17.224757 6702.7031 4.3553044e+08 0.070799549 0.033438124 117.41226 17.093220 6705.1861 4.1904928e+08 0.070814630 0.036999482 117.45610 16.961684 6707.6692 4.0262152e+08 0.070226771 0.040090968 117.49995 16.830147 6710.1522 3.8818031e+08 0.068833587 0.040526293 117.54422 16.698611 6712.6353 3.7485878e+08 0.066410107 0.043009485 117.59294 16.567075 6715.1184 3.6205475e+08 0.064182437 0.047499635 117.64149 16.435538 6717.6014 3.5134914e+08 0.061868214 0.049837068 117.68533 16.304002 6720.0845 3.3814376e+08 0.060502866 0.050409979 117.72918 16.172466 6722.5675 3.2228807e+08 0.060235218 0.049903590 117.77917 16.022487 6725.0506 3.0759388e+08 0.055855788 0.041544420 117.82812 15.875638 6727.5336 2.9038123e+08 0.054504164 0.040249415 117.87197 15.744102 6730.0167 2.7749558e+08 0.053353031 0.040401808 117.91581 15.612566 6732.4998 2.6669219e+08 0.051680628 0.043832214 117.95966 15.481028 6734.9828 2.5518156e+08 0.051627497 0.049294466 118.00350 15.349490 6737.4659 2.4560805e+08 0.053459112 0.055619648 118.04735 15.217934 6739.9489 2.3823214e+08 0.053534912 0.063987877 118.09120 15.086379 6742.4320 2.3064359e+08 0.050541477 0.069663404 118.13505 14.954843 6744.9151 2.2384709e+08 0.046195185 0.078501188 118.17890 14.823306 6747.3981 2.1361723e+08 0.041602382 0.067224104 118.22885 14.673449 6749.8812 2.0279403e+08 0.039420732 0.072036665 118.27784 14.526479 6752.3642 1.9570893e+08 0.036218347 0.073712985 118.32168 14.394943 6754.8473 1.8674819e+08 0.034466034 0.074850912 118.36553 14.263406 6757.3304 1.8247253e+08 0.031775317 0.075737514 118.40938 14.131870 6759.8134 1.7814059e+08 0.032620744 0.076016245 118.45368 13.998952 6762.2965 1.6962174e+08 0.036649764 0.077572608 118.50379 13.848621 6764.7795 1.6604252e+08 0.039682769 0.079520631 118.55217 13.704857 6767.2626 1.5831820e+08 0.039217600 0.081681730 118.59601 13.578192 6769.7457 1.5121049e+08 0.033824137 0.086262793 118.64001 13.446208 6772.2287 1.4644179e+08 0.029283747 0.092285303 118.68455 13.295878 6774.7118 1.3938242e+08 0.024770139 0.098307813 118.72880 13.153605 6777.1948 1.3591572e+08 0.020195676 0.10433032 118.77265 13.022069 6779.6779 1.3026708e+08 0.015649813 0.11035283 118.81885 12.885558 6782.1609 1.2172111e+08 0.011144382 0.11637534 118.86896 12.740795 6784.6440 1.1484874e+08 0.0066064200 0.12239785 118.91543 12.603704 6787.1271 1.0987674e+08 0.0020372600 0.12842036 118.95928 12.472168 6789.6101 1.0667476e+08 -0.0025566558 0.13444287 119.00349 12.333656 6792.0932 1.0487259e+08 -0.0071677672 0.14046538 119.04803 12.188893 6794.5762 1.0307716e+08 -0.011782647 0.14648789 119.09206 12.053804 6797.0593 1.0019477e+08 -0.016385928 0.15251040 119.13591 11.922268 6799.5424 1.0035293e+08 -0.021005581 0.15853291 119.18023 11.781756 6802.0254 95400323. -0.025607877 0.16455542 119.22477 11.636993 6804.5085 88656246. -0.030222126 0.17057793 119.26870 11.503904 6806.9915 85681066. -0.034837591 0.17660044 119.31254 11.372367 6809.4746 79396148. -0.039484451 0.18262295 119.35697 11.229853 6811.9577 79892016. -0.044069399 0.18864546 119.40170 11.084902 6814.4407 76022097. -0.048707269 0.19466797 119.45181 10.934571 6816.9238 71113675. -0.053386170 0.20069048 119.50059 10.785565 6819.4068 70287483. -0.057973487 0.20671299 119.54514 10.640803 6821.8899 69229316. -0.062551097 0.21273550 119.58968 10.493581 6824.3730 70168089. -0.067046854 0.21875801 119.63422 10.343250 6826.8560 69693231. -0.071589527 0.22478052 119.67831 10.208202 6829.3391 66730415. -0.076257179 0.23080303 119.72216 10.081537 6831.8221 64122991. -0.080971517 0.23682554 119.76642 9.9441378 6834.3052 64889946. -0.085591160 0.24284805 119.81096 9.7993757 6836.7882 60519653. -0.090618935 0.24887056 119.85550 9.6546132 6839.2713 59024212. -0.095683986 0.25489307 119.90006 9.5098379 6841.7544 54974716. -0.10137658 0.26091558 119.95016 9.3595143 6844.2374 51380788. -0.10788421 0.26693809 119.99913 9.2103251 6846.7205 50891402. -0.11639276 0.27296060 120.04367 9.0655624 6849.2035 47315165. -0.14673533 0.27898311 120.08822 8.9207996 6851.6866 45485479. -0.13086053 0.28500562 120.13276 8.7760365 6854.1697 42923440. -0.086874794 0.29102813 120.17730 8.6312737