# # 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 = 35.258540 km # Date (UTC) = 2016-12-02T09:56:35.969 # Date (julian) = 2457724.91430520 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.2699 1.0094018e+11 0.022512915 0.029349113 -25.103618 56.122480 6491.9856 9.6054732e+10 0.026693617 0.029866490 -25.208358 56.053651 6493.7014 9.2731227e+10 0.030556572 0.030383868 -25.315240 55.982926 6495.4171 8.8843453e+10 0.034290671 0.030901246 -25.429692 55.905503 6497.1328 8.2168730e+10 0.037926765 0.031418623 -25.544144 55.828079 6498.8486 7.6485467e+10 0.041490472 0.031936001 -25.655419 55.752805 6500.5643 7.2124021e+10 0.045272632 0.032453379 -25.757153 55.683985 6502.2801 6.8893726e+10 0.049620559 0.032970756 -25.858887 55.615165 6503.9958 6.5706009e+10 0.054691819 0.033488134 -25.960621 55.546345 6505.7115 6.1848207e+10 0.060455504 0.034005512 -26.073901 55.469715 6507.4273 5.7897417e+10 0.067149816 0.034522889 -26.188354 55.392291 6509.1430 5.3705098e+10 0.074743427 0.035040267 -26.302807 55.314867 6510.8588 4.9887316e+10 0.083501153 0.035557645 -26.402536 55.245506 6512.5745 4.6546322e+10 0.093559860 0.036075022 -26.501278 55.176686 6514.2903 4.3578936e+10 0.10481430 0.036592400 -26.600020 55.107867 6516.0060 4.0748203e+10 0.11706420 0.037109778 -26.698769 55.039040 6517.7217 3.8114377e+10 0.13011528 0.037627155 -26.797524 54.970210 6519.4375 3.5553792e+10 0.14368763 0.038144533 -26.896279 54.901380 6521.1532 3.3084759e+10 0.15675482 0.038661910 -26.997307 54.830371 6522.8690 3.0571865e+10 0.16603534 0.039144802 -27.105028 54.752947 6524.5847 2.7975931e+10 0.17155620 0.039634684 -27.212749 54.675524 6526.3005 2.5533826e+10 0.17389019 0.039983084 -27.317083 54.600533 6528.0162 2.3356469e+10 0.17689702 0.041455338 -27.412833 54.531713 6529.7319 2.1611680e+10 0.17912270 0.043401709 -27.508583 54.462893 6531.4477 2.0150733e+10 0.17999106 0.045880295 -27.604333 54.394073 6533.1634 1.8694796e+10 0.18122666 0.047589040 -27.708177 54.313993 6534.8792 1.7198914e+10 0.18138908 0.048190497 -27.812530 54.233203 6536.5949 1.5708095e+10 0.18003819 0.048322788 -27.916884 54.152414 6538.3107 1.4376655e+10 0.17969035 0.049307955 -28.009988 54.083235 6540.0264 1.3271094e+10 0.17949889 0.050866575 -28.102745 54.014414 6541.7421 1.2305511e+10 0.17727455 0.051085858 -28.195503 53.945593 6543.4579 1.1470080e+10 0.17561025 0.051502068 -28.288268 53.876767 6545.1736 1.0755501e+10 0.17443222 0.052457122 -28.381038 53.807938 6546.8894 1.0115418e+10 0.17261478 0.053196336 -28.473809 53.739109 6548.6051 9.5075286e+09 0.17046439 0.053848354 -28.568933 53.666853 6550.3209 8.8686013e+09 0.16900310 0.055065699 -28.669920 53.586064 6552.0366 8.2199152e+09 0.16717159 0.055577554 -28.770908 53.505274 6553.7523 7.6103332e+09 0.16443240 0.054956874 -28.867406 53.428265 6555.4681 7.0831715e+09 0.16204231 0.054460061 -28.954179 53.359445 6557.1838 6.6602081e+09 0.15923865 0.053750883 -29.040952 53.290625 6558.8996 6.3021053e+09 0.15550034 0.052472760 -29.127724 53.221805 6560.6153 5.9213679e+09 0.15232749 0.051719525 -29.228340 53.141328 6562.3311 5.4971107e+09 0.14964893 0.050564891 -29.329328 53.060537 6564.0468 5.0823756e+09 0.14675209 0.048750388 -29.430208 52.979838 6565.7625 4.7267042e+09 0.14479941 0.047452522 -29.517045 52.910964 6567.4783 4.4186971e+09 0.14323256 0.046212786 -29.603817 52.842144 6569.1940 4.1642053e+09 0.14118874 0.044865053 -29.690590 52.773325 6570.9098 3.9283998e+09 0.13956647 0.044540652 -29.775393 52.702520 6572.6255 3.7153457e+09 0.13784707 0.043871941 -29.859185 52.630698 6574.3413 3.5352328e+09 0.13540764 0.042691102 -29.942977 52.558875 6576.0570 3.3353999e+09 0.13307447 0.041305789 -30.030112 52.484188 6577.7727 3.1425605e+09 0.13086537 0.039006586 -30.124368 52.403399 6579.4885 2.9530829e+09 0.12823634 0.036801957 -30.218623 52.322609 6581.2042 2.7588015e+09 0.12581898 0.035534767 -30.309225 52.245995 6582.9200 2.5964158e+09 0.12387875 0.035043446 -30.393005 52.177175 6584.6357 2.4576575e+09 0.12150752 0.034169216 -30.476786 52.108355 6586.3515 2.3366222e+09 0.11897292 0.033166753 -30.560625 52.039436 6588.0672 2.2054893e+09 0.11706545 0.033357491 -30.651504 51.958663 6589.7829 2.0671088e+09 0.11469242 0.031492699 -30.742393 51.877873 6591.4987 1.9393295e+09 0.11185047 0.028639207 -30.832917 51.797406 6593.2144 1.8275866e+09 0.10934922 0.026902872 -30.913706 51.725594 6594.9302 1.7368303e+09 0.10655537 0.025661907 -30.994495 51.653783 6596.6459 1.6442983e+09 0.10349122 0.025724337 -31.075284 51.581971 6598.3617 1.5601951e+09 0.10135012 0.025234500 -31.156080 51.510152 6600.0774 1.4919477e+09 0.10054871 0.025148983 -31.236880 51.438330 6601.7931 1.4298069e+09 0.099918249 0.027419212 -31.317680 51.366507 6603.5089 1.3739718e+09 0.098702244 0.026362018 -31.400849 51.292711 6605.2246 1.3024544e+09 0.098331728 0.026853483 -31.488371 51.215287 6606.9404 1.2176688e+09 0.097418479 0.025814158 -31.575893 51.137863 6608.6561 1.1306886e+09 0.095211705 0.023715024 -31.659702 51.062582 6610.3718 1.0571491e+09 0.093068848 0.024358273 -31.737499 50.990769 6612.0876 1.0128474e+09 0.091314750 0.024255306 -31.815296 50.918956 6613.8033 9.6756616e+08 0.090498329 0.023868336 -31.893479 50.846787 6615.5191 9.2537647e+08 0.089308132 0.023267502 -31.981002 50.765997 6617.2348 8.7875175e+08 0.088415305 0.023517103 -32.068526 50.685208 6618.9506 8.2417934e+08 0.087868011 0.024488584 -32.155170 50.605039 6620.6663 7.8107847e+08 0.087304298 0.024981914 -32.229975 50.533226 6622.3820 7.3942125e+08 0.086216605 0.024656304 -32.304779 50.461413 6624.0978 7.0811731e+08 0.084549284 0.024914657 -32.379584 50.389600 6625.8135 6.8122305e+08 0.083615004 0.026368394 -32.461197 50.311252 6627.5293 6.4597486e+08 0.081963302 0.025521262 -32.545366 50.230451 6629.2450 6.1321853e+08 0.080948741 0.026064805 -32.629534 50.149649 6630.9608 5.7919277e+08 0.079514134 0.025930669 -32.706616 50.075651 6632.6765 5.5260044e+08 0.078390846 0.026113464 -32.781420 50.003838 6634.3922 5.2580753e+08 0.077105276 0.026355455 -32.856225 49.932026 6636.1080 5.0211064e+08 0.075869850 0.026507816 -32.934908 49.856489 6637.8237 4.8054997e+08 0.075233156 0.025757973 -33.019064 49.775700 6639.5395 4.5616025e+08 0.075094130 0.025435254 -33.103221 49.694911 6641.2552 4.3376690e+08 0.075829553 0.025149167 -33.181895 49.618108 6642.9710 4.0975958e+08 0.075853876 0.025191430 -33.253706 49.546295 6644.6867 3.9544228e+08 0.075225208 0.025417824 -33.325518 49.474482 6646.4024 3.8453214e+08 0.074465867 0.026128466 -33.398247 49.401752 6648.1182 3.6836863e+08 0.073916757 0.027043400 -33.479037 49.320962 6649.8339 3.4701150e+08 0.073568330 0.026484155 -33.559828 49.240171 6651.5497 3.2537147e+08 0.073382566 0.026905411 -33.639047 49.160559 6653.2654 3.0802819e+08 0.073234833 0.027661173 -33.707876 49.088738 6654.9812 2.9605578e+08 0.072341393 0.027618243 -33.776705 49.016917 6656.6969 2.8267432e+08 0.070826724 0.028635084 -33.845534 48.945096 6658.4126 2.6978732e+08 0.069731391 0.030792911 -33.921151 48.866191 6660.1284 2.5855570e+08 0.068680730 0.031742695 -33.998575 48.785400 6661.8441 2.4710582e+08 0.067416918 0.032964883 -34.075998 48.704609 6663.5599 2.3401145e+08 0.066361343 0.032328059 -34.146374 48.631174 6665.2756 2.1995517e+08 0.066150199 0.028095526 -34.215195 48.559362 6666.9914 2.1279361e+08 0.065594449 0.027101773 -34.284015 48.487550 6668.7071 2.0971151e+08 0.064335026 0.028096507 -34.356940 48.411454 6670.4228 1.9825705e+08 0.064103828 0.027132736 -34.434364 48.330664 6672.1386 1.8883965e+08 0.063588118 0.026959926 -34.511787 48.249873 6673.8543 1.7697973e+08 0.062683960 0.028736927 -34.583338 48.173630 6675.5701 1.7022092e+08 0.060753480 0.030890251 -34.649166 48.101818 6677.2858 1.6631107e+08 0.059149375 0.031951905 -34.714995 48.030007 6679.0016 1.5524271e+08 0.058347458 0.030266486 -34.782729 47.956719 6680.7173 1.4790008e+08 0.059037519 0.029596311 -34.860153 47.875928 6682.4330 1.3988458e+08 0.059293222 0.030755403 -34.937576 47.795138 6684.1488 1.3373659e+08 0.059092811 0.032661642 -35.013696 47.714347 6685.8645 1.2831118e+08 0.058425368 0.033617990 -35.084387 47.633558 6687.5803 1.2132038e+08 0.056277300 0.034019278 -35.155079 47.552768 6689.2960 1.1715867e+08 0.053953193 0.033749566 -35.224687 47.473979 6691.0118 1.1006074e+08 0.052930698 0.032998489 -35.290524 47.402156 6692.7275 1.0475296e+08 0.052013479 0.031920530 -35.356361 47.330334 6694.4432 1.0167258e+08 0.051169921 0.030639803 -35.422198 47.258512 6696.1590 97675773. 0.050786122 0.029741839 -35.492314 47.175817 6697.8747 92736359. 0.049814400 0.030201963 -35.563005 47.091661 6699.5905 87138190. 0.048040548 0.031045600 -35.633696 47.007505 6701.3062 79064076. 0.045537876 0.031858743 -35.707453 46.926414 6703.0220 73052643. 0.044085418 0.033730167 -35.781511 46.845623 6704.7377 72004356. 0.042482407 0.036539801 -35.855569 46.764833 6706.4534 65342124. 0.036476313 0.039235578 -35.916264 46.692484 6708.1692 62654727. 0.0040271536 0.040227809 -35.976108 46.620672 6709.8849 58010250. 0.029376356 0.040569689 -36.035952 46.548860 6711.6007 55657410. 0.090829034 0.041375626 -36.102284 46.471677