# # 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 = 57.649188 km # Date (UTC) = 2015-12-21T09:30:09.057 # Date (julian) = 2457377.89593816 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.3923 1.2326793e+11 0.024720966 0.030592212 -22.190330 50.328597 6496.7354 1.0692163e+11 0.032475266 0.031298764 -22.301054 50.230922 6499.0784 9.3827344e+10 0.040228305 0.032005316 -22.415484 50.136925 6501.4215 8.3214581e+10 0.048139252 0.032711867 -22.529913 50.042927 6503.7646 7.5592450e+10 0.056529107 0.033418419 -22.641678 49.946285 6506.1077 6.8915195e+10 0.065414949 0.034124971 -22.752007 49.848216 6508.4508 6.2710479e+10 0.074845408 0.034831523 -22.861508 49.750146 6510.7939 5.7413062e+10 0.084969943 0.035538074 -22.967751 49.652076 6513.1370 5.2384268e+10 0.095721200 0.036244626 -23.073993 49.554006 6515.4801 4.8039268e+10 0.10731031 0.036951178 -23.174997 49.463336 6517.8231 4.4431090e+10 0.11989142 0.037657730 -23.274304 49.375064 6520.1662 4.1558387e+10 0.13352060 0.038364281 -23.373862 49.286437 6522.5093 3.8690152e+10 0.14637345 0.039050621 -23.480103 49.188366 6524.8524 3.5613282e+10 0.15508511 0.039729780 -23.586345 49.090296 6527.1955 3.2415660e+10 0.16206398 0.040858396 -23.690180 48.992227 6529.5386 2.9481210e+10 0.16805807 0.043093687 -23.792336 48.894158 6531.8817 2.7013039e+10 0.17378001 0.046511949 -23.895071 48.796088 6534.2247 2.4851559e+10 0.17688737 0.048007428 -24.001314 48.698018 6536.5678 2.2971311e+10 0.17789768 0.048298559 -24.107556 48.599948 6538.9109 2.1184190e+10 0.17786317 0.049600253 -24.210969 48.501869 6541.2540 1.9479610e+10 0.17622675 0.051244155 -24.313139 48.403787 6543.5971 1.7916998e+10 0.17371233 0.051538605 -24.415305 48.305708 6545.9402 1.6463950e+10 0.17095713 0.052463990 -24.517461 48.207638 6548.2833 1.5193635e+10 0.16925768 0.053752241 -24.619617 48.109568 6550.6264 1.4029796e+10 0.16721158 0.055142195 -24.718502 48.011497 6552.9694 1.3015555e+10 0.16538829 0.055342757 -24.816572 47.913427 6555.3125 1.2085135e+10 0.16305138 0.054590761 -24.914641 47.815357 6557.6556 1.1187952e+10 0.16061852 0.053455161 -25.012712 47.717288 6559.9987 1.0351021e+10 0.15795460 0.052274455 -25.110782 47.619219 6562.3418 9.4576048e+09 0.15484433 0.050554671 -25.208864 47.517435 6564.6849 8.6678342e+09 0.15203376 0.048461208 -25.306947 47.415265 6567.0280 7.9834257e+09 0.14968261 0.046593537 -25.405023 47.314978 6569.3711 7.3972909e+09 0.14732356 0.044876575 -25.503093 47.216907 6571.7141 6.9456362e+09 0.14510121 0.044308228 -25.601114 47.118837 6574.0572 6.3748946e+09 0.14215186 0.042827517 -25.695097 47.020768 6576.4003 5.5549052e+09 0.14010633 0.040910617 -25.789081 46.922699 6578.7434 4.9318245e+09 0.13723359 0.037475687 -25.883064 46.824629 6581.0865 4.3782676e+09 0.13461772 0.035570417 -25.977047 46.726559 6583.4296 4.2817867e+09 0.13099711 0.034804231 -26.069928 46.629639 6585.7727 4.2829267e+09 0.12665836 0.033353042 -26.154523 46.541367 6588.1158 4.0657103e+09 0.12364935 0.033341274 -26.239118 46.453096 6590.4588 3.8763633e+09 0.12022559 0.030208546 -26.327454 46.360920 6592.8019 3.4179543e+09 0.11814982 0.027294606 -26.421437 46.262849 6595.1450 2.9016596e+09 0.11700433 0.025638610 -26.515420 46.164779 6597.4881 2.6178669e+09 0.11532270 0.025568700 -26.605517 46.062822 6599.8312 2.5998137e+09 0.11378136 0.024979722 -26.695414 45.960666 6602.1743 2.6123635e+09 0.11272321 0.027367910 -26.785317 45.860563 6604.5174 2.6688373e+09 0.11068910 0.026378472 -26.875226 45.762479 6606.8605 2.4454691e+09 0.11016072 0.025957754 -26.965134 45.664397 6609.2035 2.3369453e+09 0.10684095 0.023766393 -27.055032 45.566328 6611.5466 2.4522399e+09 0.10276464 0.024609868 -27.144930 45.468259 6613.8897 2.2449285e+09 0.10193111 0.023900029 -27.232335 45.370189 6616.2328 1.9914754e+09 0.10099834 0.023318837 -27.318145 45.272119 6618.5759 1.7061597e+09 0.10142292 0.024205662 -27.403956 45.173384 6620.9190 1.6265618e+09 0.10037331 0.025063337 -27.489767 45.071228 6623.2621 1.7104789e+09 0.097451951 0.024588917 -27.575579 44.969072 6625.6052 1.6301541e+09 0.095842359 0.026119733 -27.664322 44.869830 6627.9482 1.5416498e+09 0.093816849 0.025683101 -27.754231 44.771749 6630.2913 1.4350910e+09 0.092211274 0.025929020 -27.844685 44.670378 6632.6344 1.4256074e+09 0.089830415 0.026108417 -27.936627 44.560047 6634.9775 1.4434196e+09 0.087449180 0.026398146 -28.027998 44.450859 6637.3206 1.3684259e+09 0.085504755 0.026004397 -28.113809 44.352790 6639.6637 1.3183524e+09 0.084507753 0.025390862 -28.199619 44.254722 6642.0068 1.2801572e+09 0.084454379 0.025151973 -28.282791 44.154012 6644.3499 1.2170997e+09 0.083407928 0.025381417 -28.364516 44.051856 6646.6929 1.1307675e+09 0.082642984 0.026278835 -28.447053 43.950512 6649.0360 1.0175234e+09 0.081974612 0.027584028 -28.532864 43.852441 6651.3791 9.5117539e+08 0.081982064 0.026774700 -28.618675 43.754371 6653.7222 9.1484633e+08 0.081542804 0.027894391 -28.701423 43.656292 6656.0653 8.9624388e+08 0.079724470 0.028080720 -28.783159 43.558210 6658.4084 8.5765260e+08 0.078267724 0.030785339 -28.863647 43.460132 6660.7515 8.0174756e+08 0.077008382 0.032309040 -28.941285 43.362062 6663.0945 7.7439775e+08 0.075736439 0.032457011 -29.018924 43.263992 6665.4376 7.5799559e+08 0.075126613 0.027830048 -29.100066 43.162418 6667.7807 7.4353289e+08 0.074401302 0.027390231 -29.181790 43.060262 6670.1238 7.1607421e+08 0.073741902 0.027271273 -29.265820 42.954753 6672.4669 6.8146404e+08 0.073447966 0.027150222 -29.353165 42.844422 6674.8100 6.5294738e+08 0.072056605 0.029638067 -29.438233 42.736967 6677.1531 6.2578515e+08 0.069746102 0.032140609 -29.515882 42.638886 6679.4962 5.8899759e+08 0.069516900 0.029857767 -29.593531 42.540804 6681.8392 5.5231269e+08 0.070502210 0.030301216 -29.671171 42.439512 6684.1823 5.1597589e+08 0.070764771 0.032663344 -29.748809 42.337356 6686.5254 4.9286233e+08 0.069607890 0.034066783 -29.826447 42.236592 6688.8685 4.7608839e+08 0.066455229 0.033985672 -29.904087 42.138521 6691.2116 4.5716553e+08 0.065262340 0.032951340 -29.981726 42.040450 6693.5547 4.3905943e+08 0.064242116 0.031413798 -30.063929 41.931428 6695.8978 4.1945242e+08 0.064002281 0.029694564 -30.146677 41.821098 6698.2409 3.9923350e+08 0.063235803 0.030548422 -30.225755 41.719573 6700.5839 3.8171410e+08 0.061552349 0.031100847 -30.303394 41.621503 6702.9270 3.6627082e+08 0.061025213 0.033616970 -30.379928 41.522322 6705.2701 3.5218328e+08 0.061310487 0.037148824 -30.453490 41.420152 6707.6132 3.3546392e+08 0.061099628 0.040098985 -30.527053 41.317983 6709.9563 3.1870246e+08 0.060184534 0.040524294 -30.608183 41.209090 6712.2994 3.0038022e+08 0.058084004 0.042385810 -30.690931 41.098760 6714.6425 2.8741309e+08 0.056023037 0.047351709 -30.767713 40.996383 6716.9856 2.7800672e+08 0.053969457 0.049852994 -30.841265 40.898312 6719.3286 2.6349496e+08 0.051933720 0.051057604 -30.915744 40.797772 6721.6717 2.5397735e+08 0.052309489 0.050506295 -30.993895 40.687443 6724.0148 2.4297642e+08 0.050347031 0.049802923 -31.071925 40.577328 6726.3579 2.3284843e+08 0.046445625 0.040954595 -31.145477 40.475172 6728.7010 2.2650831e+08 0.045870144 0.040621635 -31.219029 40.373016 6731.0441 2.1330749e+08 0.044115255 0.041837751 -31.295244 40.266127 6733.3872 2.0278540e+08 0.042848598 0.046026348 -31.373395 40.155796 6735.7303 1.9475742e+08 0.043858879 0.050068651 -31.448044 40.050408 6738.0733 1.8939281e+08 0.045295482 0.057724868 -31.517519 39.952325 6740.4164 1.8584502e+08 0.044774685 0.064761758 -31.586995 39.854242 6742.7595 1.8182269e+08 0.041476756 0.070461455 -31.664770 39.744442 6745.1026 1.7279538e+08 0.037813121 0.078610020 -31.742920 39.634113 6747.4457 1.6304087e+08 0.033379414 0.067207727 -31.821071 39.520191 6749.7888 1.5272516e+08 0.031504779 0.072061965 -31.899222 39.405264 6752.1319 1.4425607e+08 0.028295424 0.073981884 -31.972107 39.300554 6754.4750 1.4133506e+08 0.026963627 0.075449689 -32.041573 39.202484 6756.8180 1.3391026e+08 0.024123291 0.076271845 -32.111688 39.102465 6759.1611 1.2688545e+08 0.025000125 0.075858837 -32.185241 38.992136 6761.5042 1.1807654e+08 0.027058081 0.078009883 -32.258795 38.881806 6763.8473 1.1465118e+08 0.031556954 0.079018238 -32.332349 38.771475 6766.1904 1.1257130e+08 0.033288050 0.080144409 -32.405902 38.661144 6768.5335 1.0906705e+08 0.029321640 0.082775596 -32.479466 38.550801 6770.8766 1.0546064e+08 0.024761691 0.089005751 -32.553032 38.440455 6773.2197 99636717. 0.020494398 0.094688768 -32.629501 38.327208 6775.5627 94890520. 0.016236041 0.10037178 -32.707651 38.212281 6777.9058 89316480. 0.011949794 0.10605480 -32.778079 38.105075 6780.2489 83028131. 0.0076267969 0.11173782 -32.839373 38.007005 6782.5920 79533121. 0.0033616636 0.11742083 -32.900801 37.908800 6784.9351 78273669. -0.00083637618 0.12310385 -32.974354 37.798470 6787.2782 76340361. -0.0050556320 0.12878687 -33.047908 37.688139 6789.6213 76192654. -0.0092078916 0.13446988 -33.121461 37.577809 6791.9643 75357244. -0.013383313 0.14015290 -33.195015 37.467480 6794.3074 76051261. -0.017495485 0.14583592 -33.265532 37.357150 6796.6505 74769939. -0.021676841 0.15151894 -33.334487 37.246819 6798.9936 74598916. -0.025798091 0.15720195 -33.403443 37.136489 6801.3367 74555050. -0.029900813 0.16288497 -33.472400 37.026160 6803.6798 73693807. -0.034037998 0.16856799 -33.546036 36.910947 6806.0229 71018130. -0.038278115 0.17425100 -33.630099 36.784851 6808.3660 66060980. -0.042685717 0.17993402 -33.708024 36.663294 6810.7090 63487224. -0.046998450 0.18561704 -33.776981 36.548367 6813.0521 61866972. -0.051284435 0.19130005 -33.845940 36.434498 6815.3952 61844947. -0.055485386 0.19698307 -33.914905 36.324153 6817.7383 60984014. -0.059799232 0.20266609 -33.983612 36.213808 6820.0814 59168530. -0.064268432 0.20834910 -34.047971 36.103477 6822.4245 56503772. -0.068942022 0.21403212 -34.112330 35.993146 6824.7676 51587299. -0.074118293 0.21971514 -34.180739 35.882817 6827.1107 49509034. -0.079238703 0.22539815 -34.249696 35.772488 6829.4537 50112298. -0.084259983 0.23108117 -34.325604 35.651034 6831.7968 50336197. -0.089898947 0.23676419 -34.404412 35.524938 6834.1399 47147282. -0.097623133 0.24244720 -34.471630 35.411489 6836.4830 43113201. -0.10968695 0.24813022 -34.535991 35.301158 6838.8261 41207320. -0.15444216 0.25381324 -34.606116 35.180945 6841.1692 39422309. -0.12754338 0.25949625 -34.679670 35.054852 6843.5123 38412699. -0.056149608 0.26517927 -34.746571 34.940165