# # 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 = 61.325108 km # Date (UTC) = 2014-12-20T10:24:14.584 # Date (julian) = 2457011.93350213 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.0331 6.1969935e+10 0.043057466 0.032293188 100.24768 28.683457 6502.3367 5.5765737e+10 0.051983255 0.032987842 100.29991 28.570968 6504.6404 5.0230028e+10 0.061180117 0.033682496 100.35214 28.458480 6506.9440 4.5603244e+10 0.070787827 0.034377150 100.40701 28.348625 6509.2476 4.1709676e+10 0.080860781 0.035071804 100.46326 28.240140 6511.5512 3.8263818e+10 0.091383891 0.035766457 100.51883 28.131658 6513.8549 3.5149022e+10 0.10237172 0.036461111 100.57106 28.023187 6516.1585 3.2352842e+10 0.11385769 0.037155765 100.62328 27.914716 6518.4621 2.9746855e+10 0.12579800 0.037850419 100.67824 27.806246 6520.7658 2.7303179e+10 0.13816065 0.038545073 100.73449 27.697776 6523.0694 2.5144344e+10 0.14804148 0.039196314 100.78996 27.589306 6525.3730 2.3331361e+10 0.15478921 0.039739641 100.84219 27.480835 6527.6767 2.1707428e+10 0.16066665 0.041207737 100.89442 27.372364 6529.9803 2.0176180e+10 0.16610617 0.043797308 100.94665 27.263883 6532.2839 1.8622331e+10 0.17003483 0.046921382 100.99888 27.155398 6534.5876 1.7111330e+10 0.17239866 0.048108920 101.05112 27.046916 6536.8912 1.5788529e+10 0.17374924 0.048587870 101.10334 26.938445 6539.1948 1.4622878e+10 0.17434345 0.049879452 101.15557 26.829975 6541.4985 1.3573550e+10 0.17369083 0.051164886 101.20779 26.721505 6543.8021 1.2585345e+10 0.17189130 0.051592403 101.26002 26.613034 6546.1057 1.1640240e+10 0.16959238 0.052551510 101.31225 26.504564 6548.4093 1.0810533e+10 0.16792744 0.053789890 101.36448 26.396093 6550.7130 1.0083469e+10 0.16600428 0.055163882 101.41670 26.287623 6553.0166 9.4250623e+09 0.16442004 0.055326720 101.46594 26.179141 6555.3202 8.7909726e+09 0.16231590 0.054584290 101.51416 26.070656 6557.6239 8.1889410e+09 0.16021770 0.053475066 101.56340 25.962174 6559.9275 7.6305418e+09 0.15791250 0.052282493 101.61563 25.853704 6562.2311 7.1371916e+09 0.15521111 0.050659976 101.66785 25.745233 6564.5348 6.7017109e+09 0.15269003 0.048529244 101.72008 25.636763 6566.8384 6.2802137e+09 0.15083173 0.046708610 101.77230 25.528293 6569.1420 5.8938012e+09 0.14903782 0.044861668 101.82341 25.419822 6571.4457 5.5277061e+09 0.14784421 0.044381559 101.87162 25.311352 6573.7493 5.1964928e+09 0.14586042 0.043056200 101.91983 25.202881 6576.0529 4.9062225e+09 0.14374695 0.041310489 101.96805 25.097570 6578.3565 4.6400631e+09 0.14137084 0.038086589 102.01626 24.993102 6580.6602 4.3997171e+09 0.13879221 0.035910656 102.06568 24.887433 6582.9638 4.1789643e+09 0.13667428 0.035031516 102.11791 24.778962 6585.2674 3.9605455e+09 0.13430173 0.033756963 102.17013 24.670492 6587.5711 3.7510766e+09 0.13205082 0.033284896 102.21910 24.562021 6589.8747 3.5546255e+09 0.12942789 0.031310653 102.26731 24.453550 6592.1783 3.3669486e+09 0.12639298 0.027900313 102.31552 24.345079 6594.4820 3.2022437e+09 0.12369445 0.025907950 102.36373 24.236610 6596.7856 3.0476812e+09 0.12107888 0.025723702 102.41194 24.128140 6599.0892 2.9041361e+09 0.11954352 0.024935097 102.46015 24.023003 6601.3929 2.7725107e+09 0.11989376 0.027230702 102.50837 23.918536 6603.6965 2.6443363e+09 0.11891147 0.026250956 102.55658 23.812692 6606.0001 2.5245138e+09 0.11878367 0.027503755 102.60479 23.704221 6608.3037 2.4061834e+09 0.11662390 0.023724340 102.65300 23.595750 6610.6074 2.2921242e+09 0.11374691 0.024583314 102.70121 23.490714 6612.9110 2.1856963e+09 0.11256902 0.023640081 102.74942 23.386260 6615.2146 2.0876603e+09 0.11147836 0.023258136 102.79763 23.280338 6617.5183 2.0091785e+09 0.11041703 0.023611080 102.84584 23.171867 6619.8219 1.9347189e+09 0.10980295 0.024724225 102.89405 23.063397 6622.1255 1.8532588e+09 0.10861673 0.024724580 102.94358 22.943025 6624.4292 1.7647077e+09 0.10691082 0.025092039 102.99331 22.820975 6626.7328 1.6758904e+09 0.10521684 0.025657255 103.04203 22.710615 6629.0364 1.5967263e+09 0.10391096 0.026102519 103.09023 22.606162 6631.3401 1.5319691e+09 0.10202357 0.025965309 103.13774 22.501709 6633.6437 1.4749890e+09 0.10034600 0.026264634 103.18193 22.397256 6635.9473 1.4163712e+09 0.098507086 0.026541852 103.22612 22.292802 6638.2509 1.3626703e+09 0.097132247 0.025660709 103.27307 22.185593 6640.5546 1.3108433e+09 0.096909401 0.025202798 103.32128 22.077122 6642.8582 1.2615155e+09 0.096339825 0.025186816 103.36870 21.969439 6645.1618 1.2156662e+09 0.095076144 0.025527501 103.41290 21.864972 6647.4655 1.1705202e+09 0.093851388 0.026682853 103.45710 21.760505 6649.7691 1.1211167e+09 0.093108449 0.026573516 103.50840 21.643602 6652.0727 1.0719418e+09 0.092761652 0.027270533 103.56263 21.521571 6654.3764 1.0227901e+09 0.092102111 0.027875890 103.61189 21.408249 6656.6800 9.7341755e+08 0.090337315 0.028620246 103.65608 21.303797 6658.9836 9.3216682e+08 0.088759872 0.031805561 103.70027 21.199344 6661.2873 8.9398439e+08 0.087456606 0.032681256 103.74447 21.094891 6663.5909 8.6316978e+08 0.086061187 0.032319463 103.78866 20.990437 6665.8945 8.3700707e+08 0.085793754 0.027081428 103.83285 20.883906 6668.1982 8.1193505e+08 0.084844673 0.027646124 103.87704 20.775435 6670.5018 7.8152219e+08 0.084330214 0.027096165 103.92139 20.666711 6672.8054 7.4700150e+08 0.083942594 0.027346431 103.97111 20.549182 6675.1090 7.1321525e+08 0.082285383 0.030007216 104.02084 20.431653 6677.4127 6.8222566e+08 0.080210771 0.031771558 104.06605 20.324790 6679.7163 6.5600456e+08 0.079985495 0.029675849 104.11024 20.220337 6682.0199 6.3038117e+08 0.080694418 0.030439775 104.15443 20.115884 6684.3236 6.0995261e+08 0.080644869 0.032670511 104.19862 20.011431 6686.6272 5.8878225e+08 0.079238210 0.034125998 104.24282 19.906978 6688.9308 5.6768976e+08 0.076023964 0.034000057 104.29164 19.791588 6691.2345 5.4188600e+08 0.074845832 0.032945946 104.34135 19.674076 6693.5381 5.1766862e+08 0.073719106 0.031419490 104.38762 19.564725 6695.8417 5.0120418e+08 0.073231212 0.029704859 104.43181 19.460273 6698.1454 4.9221541e+08 0.072203457 0.030417331 104.47675 19.353431 6700.4490 4.8418551e+08 0.070311310 0.031000742 104.52648 19.231382 6702.7526 4.7140949e+08 0.069403777 0.033477697 104.57620 19.109332 6705.0562 4.5474611e+08 0.069658947 0.036768600 104.61710 19.003533 6707.3599 4.4035934e+08 0.069253037 0.040135274 104.65728 18.899080 6709.6635 4.2630762e+08 0.068313275 0.040710520 104.70160 18.788954 6711.9671 4.1104956e+08 0.066111428 0.041792571 104.75131 18.671442 6714.2708 3.9414199e+08 0.063896938 0.047323765 104.79891 18.556827 6716.5744 3.7635445e+08 0.061943766 0.049247399 104.83909 18.452374 6718.8780 3.6385191e+08 0.059375573 0.051179882 104.87926 18.347921 6721.1817 3.5005400e+08 0.059630946 0.050358635 104.92643 18.233900 6723.4853 3.3472721e+08 0.058106544 0.049639600 104.97614 18.116388 6725.7889 3.2224046e+08 0.053840152 0.041083217 105.02351 18.001227 6728.0926 3.0969009e+08 0.052894978 0.039759281 105.06870 17.888235 6730.3962 2.9854089e+08 0.051264461 0.040922122 105.11359 17.777865 6732.6998 2.8700371e+08 0.049684027 0.043869043 105.15779 17.673398 6735.0034 2.7548113e+08 0.049539037 0.049297093 105.20199 17.568930 6737.3071 2.6757574e+08 0.051097917 0.055113772 105.24700 17.453783 6739.6107 2.6037034e+08 0.051226252 0.063573944 105.29220 17.336272 6741.9143 2.4960888e+08 0.049007534 0.068366445 105.33740 17.218761 6744.2180 2.3818860e+08 0.044046736 0.077962007 105.38260 17.101249 6746.5216 2.3010016e+08 0.040836857 0.072923066 105.42958 16.983737 6748.8252 2.2249031e+08 0.038840302 0.071358481 105.47929 16.866226 6751.1289 2.1576286e+08 0.035581674 0.073766156 105.52727 16.751080 6753.4325 2.0799015e+08 0.032807422 0.074376923 105.56745 16.646626 6755.7361 2.0087105e+08 0.030356758 0.074282601 105.60763 16.542173 6758.0398 1.9469302e+08 0.029324417 0.073789395 105.65128 16.431811 6760.3434 1.8906456e+08 0.029816810 0.076716096 105.69647 16.318818 6762.6470 1.8130666e+08 0.034332044 0.077007151 105.74167 16.203659 6764.9506 1.7283626e+08 0.037021603 0.079528829 105.78687 16.086147 6767.2543 1.6651675e+08 0.036336497 0.081691037 105.83206 15.968631 6769.5579 1.5786013e+08 0.031172597 0.085807442 105.87727 15.851102 6771.8615 1.4862903e+08 0.026882804 0.091394760 105.92247 15.733821 6774.1652 1.4336767e+08 0.022605547 0.096982078 105.96767 15.620829 6776.4688 1.3521428e+08 0.018327263 0.10256940 106.01286 15.507837 6778.7724 1.3152572e+08 0.014083361 0.10815671 106.05806 15.391038 6781.0761 1.2997806e+08 0.0098684248 0.11374403 106.10326 15.273526 6783.3797 1.2697381e+08 0.0056568454 0.11933135 106.14846 15.158859 6785.6833 1.2270413e+08 0.0014545804 0.12491867 106.19365 15.045867 6787.9870 1.1517589e+08 -0.0027760270 0.13050598 106.23885 14.930991 6790.2906 1.1068797e+08 -0.0069609890 0.13609330 106.28405 14.813479 6792.5942 1.0990985e+08 -0.011077009 0.14168062 106.32832 14.696892 6794.8979 1.0891576e+08 -0.015173501 0.14726794 106.36900 14.583900 6797.2015 1.0441763e+08 -0.019300022 0.15285526 106.40968 14.470909 6799.5051 97459681. -0.023443321 0.15844257 106.46124 14.336778 6801.8087 94005101. -0.027493293 0.16402989 106.51253 14.203670 6804.1124 88572527. -0.031563317 0.16961721 106.55773 14.090677 6806.4160 83987774. -0.035616062 0.17520453 106.60293 13.977685 6808.7196 81002148. -0.039632806 0.18079184 106.64812 13.860880 6811.0233 79812647. -0.043613920 0.18637916 106.69332 13.743369 6813.3269 81665586. -0.047534707 0.19196648 106.73567 13.628709 6815.6305 78290088. -0.051597729 0.19755380 106.77634 13.515717 6817.9342 72442440. -0.055749946 0.20314112 106.82161 13.395970 6820.2378 65649927. -0.059985714 0.20872843 106.87327 13.266834 6822.5414 62614410. -0.064168967 0.21431575 106.91963 13.143297 6824.8451 61723751. -0.068346892 0.21990307 106.96031 13.025768 6827.1487 63096862. -0.072532383 0.22549039 107.00396 12.905102 6829.4523 62373564. -0.076944256 0.23107771 107.05561 12.775964 6831.7559 61704112. -0.081577835 0.23666502 107.10360 12.652225 6834.0596 59792340. -0.086666687 0.24225234 107.14427 12.539233 6836.3632 52925705. -0.093070649 0.24783966 107.18629 12.423646 6838.6668 49145247. -0.10207331 0.25342698 107.23794 12.289345 6840.9705 45422065. -0.13374141 0.25901429 107.28756 12.159003 6843.2741 44634151. -0.11652978 0.26460161 107.32824 12.046011 6845.5777 45672677. -0.073346047 0.27018893 107.36892 11.933019