# # 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 = 38.234033 km # Date (UTC) = 2011-01-13T07:36:26.338 # Date (julian) = 2455574.81697150 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.5735 2.3327760e+11 0.038641121 0.031551504 0.39984480 44.634086 6499.8229 1.7770195e+11 0.047331275 0.032229807 0.29392334 44.497901 6502.0723 1.3774322e+11 0.055907814 0.032908110 0.19166860 44.365252 6504.3217 1.1109288e+11 0.064552790 0.033586413 0.10340250 44.246093 6506.5711 9.3051211e+10 0.073487124 0.034264716 0.015136392 44.126933 6508.8205 8.0090292e+10 0.082855493 0.034943019 -0.085007134 43.991739 6511.0699 6.9331088e+10 0.092620427 0.035621322 -0.18588454 43.855554 6513.3194 6.0538897e+10 0.10289663 0.036299625 -0.27466489 43.735702 6515.5688 5.3687984e+10 0.11388628 0.036977928 -0.36293073 43.616545 6517.8182 4.7929864e+10 0.12552731 0.037656231 -0.45994068 43.489078 6520.0676 4.2531576e+10 0.13765749 0.038334534 -0.56081842 43.357936 6522.3170 3.7624291e+10 0.14943867 0.039000257 -0.64959596 43.235311 6524.5664 3.3440781e+10 0.15666941 0.039628174 -0.73344851 43.116151 6526.8158 2.9870656e+10 0.16297706 0.040523358 -0.82263086 42.989418 6529.0652 2.6563579e+10 0.16780633 0.042339655 -0.91846476 42.853233 6531.3146 2.3607297e+10 0.17255323 0.045686606 -1.0087603 42.724918 6533.5640 2.1202241e+10 0.17651405 0.047759280 -1.0926129 42.605759 6535.8134 1.9285888e+10 0.17731756 0.047871433 -1.1788180 42.483257 6538.0628 1.7581027e+10 0.17852315 0.049187281 -1.2746516 42.347074 6540.3122 1.5992530e+10 0.17782371 0.051001616 -1.3669808 42.214530 6542.5617 1.4622736e+10 0.17515767 0.051215474 -1.4464203 42.095371 6544.8111 1.3471855e+10 0.17300805 0.052302298 -1.5258597 41.976212 6547.0605 1.2340560e+10 0.17064932 0.053310361 -1.6160579 41.845694 6549.3099 1.1213570e+10 0.16818106 0.054282072 -1.7068476 41.714553 6551.5593 1.0158423e+10 0.16639331 0.055432070 -1.7909412 41.594977 6553.8087 9.3037937e+09 0.16406510 0.054928546 -1.8747940 41.475818 6556.0581 8.6413328e+09 0.16148846 0.054004583 -1.9524733 41.356659 6558.3075 8.0430910e+09 0.15921230 0.052977267 -2.0274992 41.237499 6560.5569 7.4436474e+09 0.15616148 0.051772174 -2.1093592 41.110960 6562.8063 6.8340528e+09 0.15329211 0.050112653 -2.2001492 40.974777 6565.0557 6.2522179e+09 0.15061384 0.048255109 -2.2858209 40.846270 6567.3051 5.7415921e+09 0.14799485 0.046359181 -2.3652602 40.727111 6569.5546 5.3299678e+09 0.14549709 0.044888517 -2.4438829 40.607952 6571.8040 5.0031527e+09 0.14292918 0.044283698 -2.5189088 40.488793 6574.0534 4.6884674e+09 0.13942639 0.042829373 -2.5939347 40.369634 6576.3028 4.3626247e+09 0.13615419 0.041022893 -2.6788141 40.239460 6578.5522 4.0305188e+09 0.13239096 0.037777652 -2.7645603 40.108318 6580.8016 3.7109815e+09 0.12862957 0.035779967 -2.8402664 39.988400 6583.0510 3.4437355e+09 0.12521750 0.034995853 -2.9152924 39.869243 6585.3004 3.2292514e+09 0.12126451 0.033730604 -2.9903260 39.750072 6587.5498 3.0369060e+09 0.11756904 0.033280187 -3.0653633 39.630895 6589.7992 2.8366055e+09 0.11415466 0.031460391 -3.1447391 39.504827 6592.0486 2.6295201e+09 0.11089804 0.028026291 -3.2304850 39.368642 6594.2980 2.4285749e+09 0.10832128 0.026008915 -3.3098365 39.239652 6596.5474 2.2540967e+09 0.10562244 0.025724785 -3.3804492 39.120493 6598.7969 2.1114401e+09 0.10357283 0.025026719 -3.4526425 38.999456 6601.0463 1.9666045e+09 0.10340615 0.027067477 -3.5333446 38.868314 6603.2957 1.8201436e+09 0.10227359 0.026488237 -3.6130588 38.739258 6605.5451 1.6843282e+09 0.10161401 0.027122321 -3.6880848 38.620101 6607.7945 1.5658760e+09 0.099619728 0.024138182 -3.7631108 38.500943 6610.0439 1.4762657e+09 0.096370068 0.024044919 -3.8341289 38.381784 6612.2933 1.3903512e+09 0.093892582 0.024101607 -3.9047418 38.262625 6614.5427 1.3036979e+09 0.092611572 0.023566586 -3.9785952 38.132530 6616.7921 1.2128948e+09 0.091000486 0.023406622 -4.0542532 37.996345 6619.0415 1.1275967e+09 0.090096554 0.024535934 -4.1265828 37.874303 6621.2909 1.0552489e+09 0.088987518 0.024993015 -4.1971954 37.759556 6623.5403 9.9478756e+08 0.086941016 0.024692014 -4.2678082 37.643072 6625.7898 9.4406109e+08 0.085279617 0.026340014 -4.3384212 37.523913 6628.0392 8.8851336e+08 0.083170833 0.025718994 -4.4096797 37.402575 6630.2886 8.3195175e+08 0.081361781 0.025929013 -4.4853378 37.266392 6632.5380 7.7676347e+08 0.079432244 0.026096853 -4.5596212 37.132684 6634.7874 7.2710272e+08 0.077631582 0.026384278 -4.6258204 37.013525 6637.0368 6.8547208e+08 0.075829863 0.026143393 -4.6920196 36.894365 6639.2862 6.4862973e+08 0.074924142 0.025525781 -4.7582194 36.779086 6641.5356 6.1271210e+08 0.075637234 0.025150119 -4.8244192 36.664339 6643.7850 5.7359852e+08 0.075198090 0.025311146 -4.8964225 36.536438 6646.0344 5.3348306e+08 0.074637240 0.025937965 -4.9720806 36.400254 6648.2838 4.9675483e+08 0.074044323 0.027154282 -5.0417704 36.274813 6650.5332 4.6843630e+08 0.073777718 0.026377310 -5.1079699 36.155655 6652.7826 4.4405763e+08 0.073691562 0.027465859 -5.1741729 36.038102 6655.0321 4.2215294e+08 0.072832711 0.027623461 -5.2403822 35.923338 6657.2815 3.9765994e+08 0.071244366 0.029227599 -5.3070289 35.806444 6659.5309 3.7078674e+08 0.070095421 0.031723858 -5.3776309 35.670283 6661.7803 3.4927545e+08 0.068930588 0.032932362 -5.4472061 35.536102 6664.0297 3.2827759e+08 0.067793147 0.032097467 -5.5090017 35.416924 6666.2791 3.0638106e+08 0.068146978 0.026962980 -5.5707974 35.297747 6668.5285 2.8743039e+08 0.067360637 0.027938461 -5.6443911 35.168388 6670.7779 2.6673823e+08 0.067406741 0.026968239 -5.7200492 35.037248 6673.0273 2.5022505e+08 0.067206732 0.027500074 -5.7836597 34.916514 6675.2767 2.3464460e+08 0.065568277 0.030328389 -5.8454458 34.797355 6677.5261 2.2118482e+08 0.063852183 0.031610263 -5.9072319 34.680855 6679.7755 2.0949528e+08 0.063826755 0.029626898 -5.9690182 34.566111 6682.0250 1.9761063e+08 0.064628467 0.030443606 -6.0337768 34.444147 6684.2744 1.8780401e+08 0.064706947 0.032668014 -6.1043910 34.307962 6686.5238 1.7515706e+08 0.063562557 0.034065820 -6.1703164 34.179368 6688.7732 1.6100117e+08 0.060668493 0.033963665 -6.2276896 34.064621 6691.0226 1.4794541e+08 0.059507218 0.032995935 -6.2862311 33.947982 6693.2720 1.3663567e+08 0.058602662 0.031510779 -6.3568452 33.811798 6695.5214 1.2509317e+08 0.058123851 0.029763699 -6.4260606 33.677878 6697.7708 1.1816145e+08 0.057289369 0.030188812 -6.4834335 33.563133 6700.0202 1.1067852e+08 0.055550862 0.030682712 -6.5408063 33.448388 6702.2696 1.0616418e+08 0.053839673 0.033092024 -6.6092986 33.315639 6704.5190 1.0188883e+08 0.053966155 0.036432424 -6.6799127 33.179454 6706.7684 97548326. 0.053485931 0.039783810 -6.7391771 33.061647 6709.0178 92353641. 0.052608744 0.041121192 -6.7965499 32.946902 6711.2673 87533955. 0.050463541 0.040996294 -6.8587698 32.819480 6713.5167 83399330. 0.047987349 0.045555279 -6.9243404 32.683294 6715.7661 79519460. 0.045751551 0.048162102 -6.9849212 32.560158 6718.0155 78619175. 0.043419841 0.049836519 -7.0422941 32.445411 6720.2649 74478321. 0.042027832 0.050389075 -7.1024770 32.323316 6722.5143 70019213. 0.041146095 0.049969403 -7.1680473 32.187131 6724.7637 67315874. 0.036877424 0.043549263 -7.2306651 32.058669 6727.0131 67822812. 0.034273770 0.040942921 -7.2880379 31.943924 6729.2625 67160020. 0.033036902 0.040870453 -7.3461838 31.827633 6731.5119 66590921. 0.029744555 0.042768851 -7.4117540 31.696492 6733.7613 61258898. 0.024026308 0.048057809 -7.4773242 31.564788 6736.0107 56329839. -0.0014589016 0.050395615 -7.5428950 31.428602 6738.2601 53661830. 0.021809880 0.058753333 -7.6068375 31.295185 6740.5096 49637289. 0.072819748 0.064920853 -7.6597970 31.180439