# # 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 = 37.796658 km # Date (UTC) = 2010-11-30T10:08:51.569 # Date (julian) = 2455530.92281909 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.5755 2.6627767e+11 0.022349718 0.029139720 -35.064129 51.963813 6491.6055 2.3132835e+11 0.029236650 0.029751883 -35.175652 51.864239 6493.6356 2.0166254e+11 0.035775331 0.030364045 -35.287174 51.764665 6495.6657 1.8485193e+11 0.041642293 0.030976208 -35.398697 51.665091 6497.6958 1.6978845e+11 0.047207576 0.031588370 -35.510219 51.565517 6499.7258 1.4606472e+11 0.052614023 0.032200533 -35.619180 51.465943 6501.7559 1.2274820e+11 0.057585693 0.032812695 -35.726720 51.366369 6503.7860 1.0326033e+11 0.062212720 0.033424858 -35.834260 51.266795 6505.8160 9.0001042e+10 0.067001912 0.034037021 -35.941801 51.167220 6507.8461 7.9489376e+10 0.072345003 0.034649183 -36.049341 51.067646 6509.8762 7.1477944e+10 0.078807331 0.035261346 -36.156881 50.968072 6511.9063 6.5568191e+10 0.086938504 0.035873508 -36.264421 50.868498 6513.9363 5.9154167e+10 0.096359228 0.036485671 -36.371961 50.768924 6515.9664 5.3574354e+10 0.10754565 0.037097833 -36.479502 50.669350 6517.9965 4.8350305e+10 0.12031850 0.037709996 -36.587042 50.569776 6520.0265 4.3751320e+10 0.13468472 0.038322158 -36.692190 50.470202 6522.0566 3.9935072e+10 0.15028903 0.038932074 -36.795746 50.370628 6524.0867 3.6566650e+10 0.16085402 0.039457753 -36.900222 50.269367 6526.1167 3.3266485e+10 0.16905413 0.039790485 -37.014024 50.151014 6528.1468 2.9998917e+10 0.17579498 0.041558956 -37.127826 50.032661 6530.1769 2.6919138e+10 0.17934244 0.044076341 -37.232479 49.931078 6532.2070 2.4374335e+10 0.18059373 0.046857086 -37.336037 49.831504 6534.2370 2.2336140e+10 0.18014966 0.048010865 -37.438077 49.731925 6536.2671 2.0584869e+10 0.17864720 0.048029487 -37.537666 49.632336 6538.2972 1.8979496e+10 0.17848453 0.049301390 -37.637255 49.532747 6540.3272 1.7437693e+10 0.17761691 0.051008702 -37.733357 49.429697 6542.3573 1.6035603e+10 0.17540553 0.051137896 -37.828948 49.326139 6544.3874 1.4715712e+10 0.17352105 0.051958605 -37.925977 49.224020 6546.4175 1.3534167e+10 0.17152481 0.052808028 -38.025551 49.124446 6548.4475 1.2497140e+10 0.16995752 0.053801294 -38.125125 49.024872 6550.4776 1.1583031e+10 0.16846365 0.055104947 -38.221312 48.925298 6552.5077 1.0766066e+10 0.16682418 0.055458986 -38.316904 48.825724 6554.5377 9.9920861e+09 0.16450844 0.054843665 -38.411142 48.724796 6556.5678 9.2701943e+09 0.16195446 0.053929646 -38.502749 48.621240 6558.5979 8.5976539e+09 0.15912828 0.052729832 -38.594357 48.517684 6560.6280 7.9932592e+09 0.15587782 0.051708126 -38.689268 48.417429 6562.6580 7.4453074e+09 0.15260174 0.050253766 -38.784858 48.317855 6564.6881 6.9225805e+09 0.14907589 0.048459751 -38.879180 48.218281 6566.7182 6.4500695e+09 0.14561113 0.046776618 -38.970790 48.118707 6568.7482 6.0074195e+09 0.14207785 0.045083851 -39.062399 48.019133 6570.7783 5.5969511e+09 0.13913427 0.044595106 -39.154007 47.916342 6572.8084 5.2319884e+09 0.13636260 0.043767216 -39.245615 47.812786 6574.8385 4.8939522e+09 0.13372396 0.042452298 -39.337227 47.710409 6576.8685 4.5901439e+09 0.13127828 0.040371703 -39.428849 47.610819 6578.8986 4.2986732e+09 0.12841008 0.037230627 -39.520471 47.511230 6580.9287 4.0080472e+09 0.12609779 0.035662531 -39.608947 47.408518 6582.9587 3.7383429e+09 0.12431272 0.035032895 -39.696571 47.304961 6584.9888 3.4805834e+09 0.12231102 0.033976869 -39.784195 47.202503 6587.0189 3.2412595e+09 0.12019795 0.033162552 -39.871821 47.102929 6589.0490 3.0232471e+09 0.11806951 0.032948863 -39.959447 47.003355 6591.0790 2.8243602e+09 0.11545627 0.029112743 -40.047073 46.900732 6593.1091 2.6406458e+09 0.11318718 0.027000797 -40.134698 46.797176 6595.1392 2.4710465e+09 0.11050304 0.025638003 -40.221309 46.694634 6597.1692 2.3080336e+09 0.10771958 0.025669323 -40.304951 46.595060 6599.1993 2.1575345e+09 0.10562570 0.024941717 -40.388593 46.495486 6601.2294 2.0235321e+09 0.10502583 0.027153713 -40.475199 46.392948 6603.2594 1.8954199e+09 0.10340189 0.026509681 -40.562825 46.289390 6605.2895 1.7771219e+09 0.10220656 0.026907927 -40.649520 46.186762 6607.3196 1.6642391e+09 0.10015548 0.025075925 -40.733162 46.087188 6609.3497 1.5582370e+09 0.096670589 0.023809797 -40.816804 45.987614 6611.3797 1.4629944e+09 0.093431169 0.024716299 -40.897568 45.885162 6613.4098 1.3770156e+09 0.091826357 0.023723948 -40.977228 45.781605 6615.4399 1.2924724e+09 0.089990082 0.023265065 -41.057731 45.678893 6617.4699 1.2163189e+09 0.088711920 0.023595058 -41.141373 45.579319 6619.5000 1.1434970e+09 0.088068372 0.024646560 -41.225015 45.479745 6621.5301 1.0777776e+09 0.087356466 0.024913747 -41.305872 45.377366 6623.5602 1.0157177e+09 0.086032640 0.024699356 -41.385544 45.273793 6625.5902 9.5408298e+08 0.085216055 0.026101925 -41.465213 45.170983 6627.6203 8.9765722e+08 0.083716156 0.025556423 -41.544873 45.071409 6629.6504 8.4616343e+08 0.082818504 0.025991516 -41.624532 44.971835 6631.6804 7.9998377e+08 0.081384463 0.025999885 -41.704191 44.869552 6633.7105 7.5701795e+08 0.080247546 0.026276301 -41.783849 44.765996 6635.7406 7.1482891e+08 0.079059459 0.026510849 -41.863507 44.663115 6637.7707 6.7627383e+08 0.078180521 0.025783968 -41.943166 44.563541 6639.8007 6.4332619e+08 0.077972796 0.025341877 -42.022826 44.463967 6641.8308 6.0865638e+08 0.078302282 0.025151122 -42.099862 44.361768 6643.8609 5.7573365e+08 0.077490929 0.025322599 -42.175539 44.258209 6645.8909 5.4468098e+08 0.076659959 0.025869056 -42.251217 44.155242 6647.9210 5.1164996e+08 0.075866269 0.026922696 -42.326892 44.055668 6649.9511 4.8228052e+08 0.075221471 0.026322669 -42.402568 43.956094 6651.9812 4.5480913e+08 0.074753714 0.027236077 -42.478244 43.853981 6654.0112 4.2724947e+08 0.074206744 0.028031444 -42.553919 43.750425 6656.0413 4.0537398e+08 0.072568920 0.028059662 -42.629595 43.646869 6658.0714 3.8612174e+08 0.071254271 0.030187647 -42.705272 43.543312 6660.1014 3.6494543e+08 0.069986962 0.031718198 -42.780949 43.439756 6662.1315 3.4550175e+08 0.068735441 0.032970488 -42.856626 43.338653 6664.1616 3.2952750e+08 0.067758906 0.031614879 -42.932302 43.239078 6666.1916 3.0983253e+08 0.068167248 0.026945940 -43.007559 43.139082 6668.2217 2.9056103e+08 0.067750698 0.027666982 -43.079263 43.035509 6670.2518 2.7400092e+08 0.067667724 0.027211982 -43.150968 42.931936 6672.2819 2.5829455e+08 0.067657981 0.027042972 -43.222665 42.830743 6674.3119 2.4924055e+08 0.066827118 0.029217927 -43.294359 42.731169 6676.3420 2.3658652e+08 0.064836672 0.031934144 -43.366052 42.631259 6678.3721 2.2113311e+08 0.064178592 0.030687754 -43.437745 42.527702 6680.4021 2.0883633e+08 0.064739104 0.029528257 -43.509439 42.424146 6682.4322 1.9968095e+08 0.065344291 0.030754774 -43.581132 42.322875 6684.4623 1.9214804e+08 0.065277201 0.032677551 -43.652825 42.223301 6686.4924 1.8331996e+08 0.064109124 0.034047547 -43.724519 42.123476 6688.5224 1.7257309e+08 0.061433259 0.033905785 -43.796213 42.019917 6690.5525 1.6432720e+08 0.059887539 0.033052546 -43.867906 41.916359 6692.5826 1.5639386e+08 0.058740051 0.032088822 -43.942743 41.807143 6694.6126 1.4890866e+08 0.057716817 0.030402374 -44.020127 41.693342 6696.6427 1.4071054e+08 0.057015591 0.029942820 -44.094072 41.583183 6698.6728 1.3277592e+08 0.055550457 0.031141293 -44.161783 41.479627 6700.7029 1.2652333e+08 0.053480155 0.031189047 -44.229494 41.376070 6702.7329 1.1887671e+08 0.052365749 0.033461976 -44.297204 41.275879 6704.7630 1.1070344e+08 0.052060616 0.036552226 -44.364914 41.176305 6706.7931 1.0467620e+08 0.051307085 0.039826680 -44.432624 41.075399 6708.8231 99563139. 0.050395947 0.040939950 -44.500335 40.971841 6710.8532 96189500. 0.048573791 0.040663501 -44.568047 40.868283 6712.8833 93294445. 0.046437326 0.043469920 -44.635757 40.768005 6714.9134 88128614. 0.044112672 0.047372074 -44.703466 40.668431 6716.9434 84775527. 0.041829287 0.049790939 -44.772778 40.562984 6718.9735 78193900. 0.038804757 0.051328560 -44.845611 40.444632 6721.0036 72937592. 0.038322883 0.050304973 -44.917851 40.328455 6723.0336 70636028. 0.036270066 0.049387704 -44.985572 40.228866 6725.0637 67945841. 0.030133087 0.041536224 -45.053293 40.129277 6727.0938 66712016. 0.024040137 0.040835445 -45.118596 40.027285 6729.1239 63163488. -0.0075060987 0.040962877 -45.182323 39.923729 6731.1539 58627511. 0.016577896 0.042056358 -45.246914 39.819201 6733.1840 54863263. 0.077391366 0.044923258 -45.319748 39.705399