# # 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 = 47.652270 km # Date (UTC) = 2013-01-01T09:33:29.889 # Date (julian) = 2456293.89826261 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.7594 8.9099930e+10 0.039222590 0.031607569 -26.038887 46.966159 6500.0453 7.8061385e+10 0.046718438 0.032296864 -26.146523 46.854039 6502.3311 6.9597956e+10 0.054302685 0.032986160 -26.240218 46.752806 6504.6170 6.2807199e+10 0.062157581 0.033675455 -26.331918 46.653132 6506.9029 5.7010920e+10 0.070414170 0.034364750 -26.427816 46.548895 6509.1887 5.1543962e+10 0.079081684 0.035054045 -26.530968 46.436774 6511.4746 4.6202603e+10 0.088144585 0.035743340 -26.632550 46.325814 6513.7604 4.1578312e+10 0.097817967 0.036432636 -26.724238 46.222167 6516.0463 3.7775203e+10 0.10830355 0.037121931 -26.815926 46.118521 6518.3322 3.4482943e+10 0.11958864 0.037811226 -26.914817 46.009549 6520.6180 3.1302451e+10 0.13148778 0.038500521 -27.017967 45.897429 6522.9039 2.8409531e+10 0.14163156 0.039153945 -27.114960 45.790275 6525.1897 2.6058065e+10 0.14901082 0.039760559 -27.202661 45.690614 6527.4756 2.4179115e+10 0.15542855 0.041061769 -27.290362 45.590953 6529.7615 2.2480238e+10 0.16156308 0.043448740 -27.387824 45.476209 6532.0473 2.0748605e+10 0.16708438 0.046723731 -27.486491 45.359602 6534.3332 1.9113222e+10 0.17051451 0.048037764 -27.577924 45.254178 6536.6191 1.7740883e+10 0.17276117 0.048344383 -27.665637 45.154503 6538.9049 1.6534684e+10 0.17415120 0.049597326 -27.755017 45.052935 6541.1908 1.5268266e+10 0.17375453 0.051264662 -27.853682 44.940814 6543.4766 1.3985175e+10 0.17206644 0.051506988 -27.952348 44.828694 6545.7625 1.2815684e+10 0.16975584 0.052462398 -28.037223 44.724390 6548.0484 1.1878580e+10 0.16820460 0.053682086 -28.120939 44.620744 6550.3342 1.1093920e+10 0.16653075 0.055069044 -28.208986 44.513589 6552.6201 1.0294015e+10 0.16483421 0.055430694 -28.303167 44.401469 6554.9059 9.5235386e+09 0.16299292 0.054851391 -28.395420 44.291643 6557.1918 8.8474567e+09 0.16076363 0.053745888 -28.479136 44.191982 6559.4777 8.2738000e+09 0.15811862 0.052333267 -28.562851 44.092321 6561.7635 7.7324606e+09 0.15542815 0.050996436 -28.653638 43.981210 6564.0494 7.1673570e+09 0.15247786 0.048749219 -28.747819 43.864604 6566.3352 6.6301113e+09 0.15037192 0.046993240 -28.835560 43.755549 6568.6211 6.1786679e+09 0.14838781 0.045200724 -28.915299 43.655875 6570.9070 5.7925250e+09 0.14640180 0.044541815 -28.995039 43.556201 6573.1928 5.4200133e+09 0.14409022 0.043502748 -29.084116 43.440650 6575.4787 5.0407258e+09 0.14127730 0.041894440 -29.173813 43.324045 6577.7645 4.6408565e+09 0.13824697 0.039019463 -29.263509 43.210616 6580.0504 4.2692336e+09 0.13502644 0.036474174 -29.353205 43.098495 6582.3363 3.9458369e+09 0.13174233 0.035202288 -29.438133 42.992334 6584.6221 3.6843308e+09 0.12833887 0.034176617 -29.517862 42.892673 6586.9080 3.4696258e+09 0.12469463 0.033159559 -29.597591 42.793012 6589.1938 3.2501621e+09 0.12125723 0.032661408 -29.682638 42.676918 6591.4797 3.0232800e+09 0.11784963 0.028660619 -29.767850 42.560311 6593.7656 2.8108053e+09 0.11516008 0.026390477 -29.849011 42.456236 6596.0514 2.6463289e+09 0.11231266 0.025727040 -29.928750 42.356562 6598.3373 2.5065513e+09 0.11036800 0.025246133 -30.009758 42.254001 6600.6231 2.3544131e+09 0.10993164 0.026270950 -30.094970 42.141881 6602.9090 2.1923622e+09 0.10912541 0.026740923 -30.180141 42.029797 6605.1949 2.0469820e+09 0.10835536 0.026828522 -30.255904 41.926132 6607.4807 1.9266908e+09 0.10664299 0.024757737 -30.331646 41.822485 6609.7666 1.8199396e+09 0.10343244 0.023933645 -30.409849 41.714656 6612.0524 1.7103878e+09 0.10083968 0.024281563 -30.490575 41.602535 6614.3383 1.5968606e+09 0.099770635 0.023707410 -30.569986 41.492650 6616.6242 1.5051834e+09 0.098115594 0.023380263 -30.645728 41.389002 6618.9100 1.4271325e+09 0.097117372 0.024457977 -30.721471 41.285354 6621.1959 1.3492485e+09 0.095990620 0.025024517 -30.800978 41.175306 6623.4818 1.2690533e+09 0.094019419 0.024670308 -30.881705 41.063185 6625.7676 1.1899378e+09 0.092442144 0.026313597 -30.957722 40.957607 6628.0535 1.1276758e+09 0.090259699 0.025724806 -31.029487 40.857933 6630.3393 1.0752670e+09 0.088248311 0.025929138 -31.101412 40.757958 6632.6252 1.0230698e+09 0.086143012 0.026107311 -31.182136 40.641359 6634.9111 9.6673122e+08 0.084213776 0.026393299 -31.262863 40.524755 6637.1969 9.0532978e+08 0.082242952 0.026064968 -31.343589 40.411682 6639.4828 8.4482151e+08 0.081204472 0.025455520 -31.424315 40.299562 6641.7686 7.9192500e+08 0.081398494 0.025150910 -31.500036 40.194393 6644.0545 7.4565901e+08 0.080397045 0.025349496 -31.571792 40.094732 6646.3404 7.1141054e+08 0.079520777 0.026096327 -31.643770 39.994233 6648.6262 6.8056323e+08 0.078545179 0.027383477 -31.720012 39.877628 6650.9121 6.4454489e+08 0.078234993 0.026464038 -31.796254 39.761024 6653.1979 6.0836155e+08 0.078011154 0.027626722 -31.872496 39.648095 6655.4838 5.6724070e+08 0.076736151 0.027810123 -31.948738 39.535975 6657.7697 5.3050858e+08 0.075251500 0.029793893 -32.019987 39.431197 6660.0555 5.0143548e+08 0.073913613 0.031676463 -32.087766 39.331523 6662.3414 4.7728571e+08 0.072476628 0.032852736 -32.156237 39.230464 6664.6272 4.5925361e+08 0.071511332 0.029911036 -32.232479 39.113858 6666.9131 4.3846222e+08 0.071267489 0.027086525 -32.308720 38.997251 6669.1990 4.1369982e+08 0.070126853 0.028151354 -32.384963 38.884467 6671.4848 3.8807567e+08 0.070202443 0.026872257 -32.461205 38.772346 6673.7707 3.6034397e+08 0.069565280 0.028611832 -32.532175 38.667980 6676.0565 3.4249957e+08 0.067194710 0.031750167 -32.599943 38.568319 6678.3424 3.2881778e+08 0.066050667 0.030707599 -32.668166 38.467240 6680.6283 3.1692109e+08 0.066471221 0.029577085 -32.739923 38.355120 6682.9141 3.0124692e+08 0.067051332 0.031122970 -32.811680 38.243000 6685.2000 2.8103889e+08 0.066741574 0.032916073 -32.883437 38.126915 6687.4858 2.6288039e+08 0.064569957 0.034071938 -32.955194 38.010310 6689.7717 2.4552467e+08 0.062118197 0.033321363 -33.026951 37.896639 6692.0576 2.3342692e+08 0.060964099 0.032698478 -33.098708 37.784519 6694.3434 2.1933417e+08 0.060145181 0.030779693 -33.170470 37.672391 6696.6293 2.0554028e+08 0.059952656 0.029937242 -33.242237 37.560254 6698.9151 1.9594447e+08 0.058791694 0.031473966 -33.312447 37.450552 6701.2010 1.8678446e+08 0.056996111 0.031704386 -33.376230 37.350891 6703.4869 1.7925539e+08 0.056938672 0.034893541 -33.440012 37.251230 6705.7727 1.7172140e+08 0.057044176 0.038042367 -33.509271 37.139934 6708.0586 1.6226346e+08 0.056736845 0.040107382 -33.581028 37.023328 6710.3445 1.5483014e+08 0.055392514 0.040563917 -33.650736 36.908771 6712.6303 1.4717518e+08 0.053253428 0.043000240 -33.718009 36.796650 6714.9162 1.3691367e+08 0.051171306 0.047372286 -33.786301 36.684530 6717.2020 1.2785895e+08 0.049029803 0.049861772 -33.858058 36.572409 6719.4879 1.2065608e+08 0.047115214 0.050906303 -33.929815 36.460289 6721.7738 1.1577056e+08 0.047394052 0.050537035 -33.997099 36.348169 6724.0596 1.1382244e+08 0.045314668 0.049428831 -34.064372 36.236048 6726.3455 1.0834888e+08 0.041519976 0.040954483 -34.131644 36.120486 6728.6313 1.0220164e+08 0.040948659 0.040522911 -34.198915 36.003882 6730.9172 97325956. 0.039234609 0.041636492 -34.266187 35.889689 6733.2031 92144338. 0.037977465 0.045026767 -34.333460 35.777568 6735.4889 90677850. 0.038749931 0.049812455 -34.400736 35.665442 6737.7748 88244636. 0.040392119 0.056603643 -34.468017 35.553305 6740.0606 82965910. 0.040323927 0.064153954 -34.534944 35.441169 6742.3465 81916634. 0.037812387 0.069455063 -34.597732 35.329049 6744.6324 78325254. 0.033696967 0.078282527 -34.660519 35.216929 6746.9182 74197302. 0.029333353 0.068311932 -34.727114 35.104808 6749.2041 69638232. 0.028789555 0.072222056 -34.794387 34.992688 6751.4899 67359081. 0.025498731 0.073918821 -34.858882 34.880568 6753.7758 68306220. 0.023794749 0.075487928 -34.921669 34.768447 6756.0617 67504013. 0.021494076 0.074325577 -34.989948 34.650087 6758.3475 64102911. 0.021216449 0.074440208 -35.066833 34.521946 6760.6334 59028289. 0.021694930 0.077269106 -35.137536 34.400830 6762.9192 57298917. 0.026852719 0.076568028 -35.200323 34.288710 6765.2051 57539776. 0.029568907 0.079568636 -35.263110 34.176590 6767.4910 56641577. 0.028369569 0.081426011 -35.325897 34.064470 6769.7768 52004985. 0.023076331 0.086338406 -35.388684 33.952349 6772.0627 50579624. 0.018676738 0.091882623 -35.451471 33.835837 6774.3485 51217045. 0.014279357 0.097426840 -35.514258 33.719231 6776.6344 53031224. 0.0097591936 0.10297106 -35.583768 33.593982 6778.9203 52860221. 0.0046191659 0.10851527 -35.655526 33.465842 6781.2061 50385090. -0.0017434529 0.11405949 -35.720124 33.350491 6783.4920 44585192. -0.011845692 0.11960371 -35.782913 33.238370 6785.7779 42211454. -0.045962604 0.12514792 -35.843150 33.126249 6788.0637 42017082. -0.026559494 0.13069214 -35.901452 33.014129 6790.3496 43127478. 0.020517844 0.13623636 -35.964313 32.896580