# # 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 = 59.155131 km # Date (UTC) = 2014-01-06T10:32:02.022 # Date (julian) = 2456663.93891229 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.5957 6.4624913e+10 0.031268779 0.030653562 96.389947 36.315097 6496.9893 5.8369753e+10 0.038742935 0.031375354 96.458965 36.197374 6499.3830 5.3212434e+10 0.046132859 0.032097145 96.525754 36.084666 6501.7766 4.8991669e+10 0.053612937 0.032818937 96.595365 35.967196 6504.1702 4.5197635e+10 0.061354844 0.033540728 96.670518 35.840380 6506.5638 4.1690495e+10 0.069530193 0.034262520 96.745668 35.713567 6508.9575 3.8225659e+10 0.078231478 0.034984311 96.820806 35.586768 6511.3511 3.4885172e+10 0.087541395 0.035706103 96.895945 35.459597 6513.7447 3.1696465e+10 0.097555057 0.036427894 96.971086 35.328101 6516.1383 2.8716731e+10 0.10833891 0.037149686 97.046228 35.196605 6518.5320 2.5924724e+10 0.11993298 0.037871477 97.116905 35.069570 6520.9256 2.3417942e+10 0.13245465 0.038593268 97.187346 34.942771 6523.3192 2.1310618e+10 0.14227721 0.039258232 97.254793 34.827533 6525.7129 1.9532896e+10 0.14927045 0.039700859 97.321584 34.714827 6528.1065 1.8042044e+10 0.15679558 0.041526952 97.389928 34.596133 6530.5001 1.6600531e+10 0.16311367 0.044528831 97.460372 34.469334 6532.8937 1.5189140e+10 0.16905526 0.047430808 97.530817 34.342535 6535.2874 1.3852895e+10 0.17246497 0.048099644 97.601261 34.215736 6537.6810 1.2614664e+10 0.17457251 0.049006277 97.671705 34.088937 6540.0746 1.1488622e+10 0.17540493 0.050889347 97.742146 33.962138 6542.4682 1.0479611e+10 0.17311331 0.051180004 97.812415 33.835165 6544.8619 9.5529489e+09 0.17109382 0.052343502 97.878172 33.703651 6547.2555 8.7380194e+09 0.16870348 0.053384519 97.943929 33.572137 6549.6491 8.0697557e+09 0.16662039 0.054627772 98.006835 33.457694 6552.0427 7.5197071e+09 0.16489018 0.055576011 98.069451 33.344985 6554.4364 7.0542748e+09 0.16252344 0.054841537 98.136077 33.225060 6556.8300 6.5961670e+09 0.16041797 0.053891103 98.206521 33.098261 6559.2236 6.1342738e+09 0.15775557 0.052361942 98.275168 32.971463 6561.6172 5.6956471e+09 0.15519681 0.051068521 98.340915 32.844664 6564.0109 5.2900944e+09 0.15235755 0.048766675 98.406662 32.717865 6566.4045 4.9038319e+09 0.15050423 0.046954067 98.472409 32.591066 6568.7981 4.5770710e+09 0.14877163 0.045038007 98.537250 32.466015 6571.1917 4.3004017e+09 0.14734249 0.044450908 98.595691 32.353307 6573.5854 4.0688388e+09 0.14530188 0.043187742 98.654132 32.240598 6575.9790 3.8615613e+09 0.14286009 0.041392475 98.717903 32.117612 6578.3726 3.6377123e+09 0.14025091 0.038061213 98.783660 31.990794 6580.7662 3.4224515e+09 0.13742394 0.035812637 98.849411 31.863988 6583.1599 3.2101593e+09 0.13517043 0.034940750 98.915158 31.737189 6585.5535 3.0076806e+09 0.13256591 0.033528270 98.980905 31.610390 6587.9471 2.8243675e+09 0.13024168 0.033368214 99.046653 31.483591 6590.3407 2.6555391e+09 0.12727372 0.030428233 99.109912 31.361594 6592.7344 2.5270061e+09 0.12429395 0.027360231 99.168356 31.248885 6595.1280 2.4160573e+09 0.12157201 0.025636844 99.226800 31.136177 6597.5216 2.3108230e+09 0.11917379 0.025558124 99.287707 31.010151 6599.9152 2.2019948e+09 0.11846286 0.024984777 99.348757 30.883353 6602.3089 2.0804099e+09 0.11824140 0.027253055 99.413639 30.760386 6604.7025 1.9701569e+09 0.11747365 0.026488395 99.479386 30.638283 6607.0961 1.8597771e+09 0.11667340 0.025517191 99.541909 30.512957 6609.4897 1.7552279e+09 0.11377961 0.023851410 99.602959 30.386157 6611.8834 1.6592984e+09 0.11141295 0.024395125 99.660235 30.267200 6614.2770 1.5827422e+09 0.11053183 0.023749651 99.714511 30.154477 6616.6706 1.5202412e+09 0.10909656 0.023387553 99.769884 30.039476 6619.0642 1.4568800e+09 0.10838443 0.024541417 99.830934 29.912678 6621.4579 1.3880304e+09 0.10751090 0.024937682 99.891984 29.785880 6623.8515 1.3060775e+09 0.10571853 0.024807293 99.953034 29.659081 6626.2451 1.2349267e+09 0.10436951 0.026278590 100.01408 29.532281 6628.6388 1.1693563e+09 0.10267619 0.025962435 100.07514 29.409724 6631.0324 1.1092423e+09 0.10077228 0.025934055 100.13619 29.287622 6633.4260 1.0527032e+09 0.099175513 0.026226629 100.19724 29.161885 6635.8196 9.9475812e+08 0.097375518 0.026522703 100.25829 29.035086 6638.2133 9.4858714e+08 0.095935849 0.025662351 100.31497 28.917368 6640.6069 9.0929171e+08 0.095694834 0.025196399 100.36924 28.804659 6643.0005 8.7487452e+08 0.094997285 0.025192695 100.42403 28.688444 6645.3941 8.3769939e+08 0.093594989 0.025636320 100.48038 28.561646 6647.7878 8.0165878e+08 0.092372897 0.026852538 100.53730 28.435407 6650.1814 7.6275817e+08 0.091703099 0.026296761 100.59836 28.313286 6652.5750 7.2937666e+08 0.091345175 0.027408729 100.65942 28.191165 6654.9686 6.9773498e+08 0.090345505 0.027623578 100.71582 28.064411 6657.3623 6.6500914e+08 0.088477430 0.029321321 100.77217 27.937612 6659.7559 6.3494575e+08 0.087038986 0.031676920 100.83257 27.814858 6662.1495 6.0306326e+08 0.085592950 0.032960387 100.89363 27.692755 6664.5431 5.7619951e+08 0.084578393 0.030218775 100.95124 27.567216 6666.9368 5.5150511e+08 0.084359840 0.027091135 101.00759 27.440416 6669.3304 5.2948772e+08 0.083193993 0.028016371 101.06395 27.313617 6671.7240 5.0452173e+08 0.083167001 0.026875666 101.12030 27.186820 6674.1176 4.8301833e+08 0.082223919 0.029054027 101.17370 27.068661 6676.5113 4.6422851e+08 0.079681212 0.032043231 101.22379 26.960127 6678.9049 4.4810043e+08 0.078579884 0.030331385 101.27436 26.850179 6681.2985 4.3325314e+08 0.079474789 0.029886375 101.33072 26.723380 6683.6921 4.1595986e+08 0.079745652 0.032202922 101.38707 26.596581 6686.0858 3.9680955e+08 0.079002603 0.033810985 101.44343 26.474234 6688.4794 3.7622613e+08 0.075984566 0.033895850 101.49979 26.352131 6690.8730 3.5957436e+08 0.074281849 0.033015815 101.55615 26.230014 6693.2666 3.4630039e+08 0.073082528 0.031512613 101.61251 26.107893 6695.6603 3.3828734e+08 0.072296220 0.029738190 101.66563 25.982546 6698.0539 3.2928675e+08 0.071239368 0.030291794 101.71729 25.855747 6700.4475 3.1822990e+08 0.069252683 0.030999657 101.77158 25.731580 6702.8411 3.0375559e+08 0.068430143 0.033548389 101.82793 25.609479 6705.2348 2.8955619e+08 0.068689227 0.037085983 101.88429 25.485353 6707.6284 2.7707721e+08 0.068362587 0.040096809 101.94065 25.358554 6710.0220 2.6188544e+08 0.067346122 0.040500805 101.99781 25.227909 6712.4156 2.4876995e+08 0.065102433 0.042601679 102.05685 25.088359 6714.8093 2.3571490e+08 0.062979713 0.047364250 102.11471 24.956460 6717.2029 2.2680834e+08 0.060752489 0.049861718 102.17106 24.834358 6719.5965 2.2028899e+08 0.058794991 0.050803096 102.22597 24.710803 6721.9902 2.1201106e+08 0.058944921 0.050602236 102.27763 24.584005 6724.3838 2.0218976e+08 0.055893749 0.046721879 102.32929 24.458050 6726.7774 1.9578670e+08 0.052617840 0.040958379 102.38095 24.335948 6729.1710 1.8736959e+08 0.052039247 0.040931433 102.43260 24.213845 6731.5647 1.8236391e+08 0.049926601 0.042873790 102.48426 24.091742 6733.9583 1.7232033e+08 0.048642937 0.049127085 102.53592 23.969639 6736.3519 1.6512130e+08 0.050427549 0.051685403 102.58758 23.847537 6738.7455 1.6171011e+08 0.051342525 0.061425579 102.63924 23.725435 6741.1392 1.5447855e+08 0.050048376 0.066155572 102.69091 23.603319 6743.5328 1.5170366e+08 0.045396339 0.074641570 102.74257 23.481198 6745.9264 1.4296541e+08 0.043261740 0.078956340 102.79913 23.343972 6748.3200 1.3644502e+08 0.039046789 0.068700603 102.85817 23.199056 6750.7137 1.3027034e+08 0.036180649 0.073222732 102.91130 23.072379 6753.1073 1.2520449e+08 0.033290995 0.073324480 102.96296 22.950277 6755.5009 1.2301933e+08 0.030989748 0.074385728 103.01462 22.828174 6757.8945 1.2156633e+08 0.029621369 0.074025380 103.06628 22.706071 6760.2882 1.1737376e+08 0.030311651 0.076610781 103.12192 22.574533 6762.6818 1.1161328e+08 0.035014060 0.076951068 103.18096 22.434985 6765.0754 1.0470608e+08 0.037899263 0.079544960 103.23182 22.307258 6767.4690 1.0012866e+08 0.036801212 0.081450565 103.27879 22.185156 6769.8627 97916137. 0.031609932 0.086546599 103.32833 22.063054 6772.2563 96749360. 0.027226449 0.092352193 103.37999 21.940952 6774.6499 95092928. 0.022855999 0.098157788 103.43473 21.811542 6777.0435 91603060. 0.018508166 0.10396338 103.49377 21.671993 6779.4372 89335906. 0.014147489 0.10976898 103.54610 21.542140 6781.8308 83094978. 0.0098373287 0.11557457 103.59306 21.420037 6784.2244 79223700. 0.0055062574 0.12138017 103.64518 21.290495 6786.6180 74792349. 0.0011829729 0.12718576 103.70422 21.150946 6789.0117 71360672. -0.0031472599 0.13299135 103.76023 21.011397 6791.4053 69928691. -0.0074887737 0.13879695 103.81391 20.871849 6793.7989 67908938. -0.011834863 0.14460254 103.86288 20.744514 6796.1925 65837431. -0.016183915 0.15040814 103.90984 20.622412 6798.5862 64868293. -0.020551782 0.15621373 103.96063 20.490352 6800.9798 59004915. -0.024918930 0.16201933 104.01431 20.350803 6803.3734 54288516. -0.029317294 0.16782492 104.06655 20.226922 6805.7670 52404559. -0.033742574 0.17363052 104.11821 20.109515 6808.1607 51412201. -0.038232629 0.17943611 104.17104 19.979305 6810.5543 52088069. -0.042831266 0.18524170 104.22471 19.839756 6812.9479 50801504. -0.047725532 0.19104730 104.27838 19.700208 6815.3415 48837988. -0.054072016 0.19685289 104.33205 19.560661 6817.7352 46574276. -0.069838368 0.20265849 104.38573 19.421112 6820.1288 46108106. -0.065118249 0.20846408 104.43940 19.281564 6822.5224 44374534. -0.049194987 0.21426968 104.48644 19.163909