# # 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 = 42.590249 km # Date (UTC) = 2015-01-18T09:52:24.894 # Date (julian) = 2457040.91139923 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6487.7387 1.3058586e+11 0.023629631 0.028585840 -24.704651 54.275926 6489.8229 1.2136687e+11 0.029693572 0.029214331 -24.849529 54.159089 6491.9071 1.0922789e+11 0.035867068 0.029842823 -24.993297 54.042252 6493.9913 9.8649878e+10 0.041756431 0.030471314 -25.133501 53.925415 6496.0756 8.8974420e+10 0.047381194 0.031099806 -25.273249 53.808121 6498.1598 7.9627802e+10 0.052736289 0.031728298 -25.408780 53.686612 6500.2440 7.1342229e+10 0.057650561 0.032356789 -25.544310 53.565102 6502.3282 6.4180757e+10 0.062096926 0.032985281 -25.679841 53.448069 6504.4125 5.7710979e+10 0.066167930 0.033613772 -25.815372 53.331232 6506.4967 5.1764737e+10 0.070091719 0.034242264 -25.950903 53.210570 6508.5809 4.6431598e+10 0.074302799 0.034870755 -26.086434 53.089058 6510.6651 4.2077810e+10 0.079435365 0.035499247 -26.207692 52.980630 6512.7493 3.8659570e+10 0.086210479 0.036127738 -26.322190 52.878400 6514.8336 3.5935589e+10 0.095167822 0.036756230 -26.440502 52.771676 6516.9178 3.3401932e+10 0.10634473 0.037384722 -26.571360 52.650167 6519.0020 3.0821988e+10 0.11965365 0.038013213 -26.701781 52.529093 6521.0862 2.8313017e+10 0.13501507 0.038641705 -26.827964 52.412256 6523.1704 2.6044124e+10 0.14901797 0.039221358 -26.954147 52.295419 6525.2547 2.4040186e+10 0.16069663 0.039753150 -27.084788 52.174125 6527.3389 2.2278371e+10 0.16926883 0.040962509 -27.215645 52.052614 6529.4231 2.0663020e+10 0.17394732 0.042909765 -27.338896 51.931103 6531.5073 1.9153334e+10 0.17593049 0.045967110 -27.460407 51.809594 6533.5916 1.7746354e+10 0.17667244 0.047770981 -27.585068 51.691234 6535.6758 1.6427414e+10 0.17557949 0.047931147 -27.711252 51.574397 6537.7600 1.5180242e+10 0.17549986 0.049043532 -27.834938 51.455062 6539.8442 1.4022558e+10 0.17487925 0.050665536 -27.956449 51.333550 6541.9284 1.2969040e+10 0.17266893 0.051025443 -28.070350 51.218035 6544.0127 1.2116163e+10 0.17067773 0.051654622 -28.172580 51.111717 6546.0969 1.1398721e+10 0.16892271 0.052544248 -28.274810 51.005398 6548.1811 1.0713256e+10 0.16799918 0.053721731 -28.390905 50.884660 6550.2653 1.0005566e+10 0.16688429 0.055051796 -28.507742 50.763151 6552.3496 9.2826747e+09 0.16557027 0.055498784 -28.624579 50.645423 6554.4338 8.5962362e+09 0.16372962 0.054841483 -28.741416 50.528586 6556.5180 7.9415301e+09 0.16187373 0.053936971 -28.858253 50.408618 6558.6022 7.3475672e+09 0.15979237 0.052726141 -28.975090 50.287107 6560.6864 6.8252067e+09 0.15729325 0.051655396 -29.082018 50.173648 6562.7707 6.4148103e+09 0.15483588 0.050146591 -29.180159 50.067329 6564.8549 6.0723909e+09 0.15218548 0.048384164 -29.279485 49.959726 6566.9391 5.7409988e+09 0.14956545 0.046651636 -29.391649 49.838215 6569.0233 5.4137836e+09 0.14673242 0.044853943 -29.503812 49.716703 6571.1075 5.0850372e+09 0.14451266 0.044473902 -29.615975 49.595194 6573.1918 4.7777489e+09 0.14217613 0.043503591 -29.728138 49.473684 6575.2760 4.4837868e+09 0.13990106 0.042097801 -29.836539 49.352173 6577.3602 4.1974290e+09 0.13776523 0.039654564 -29.944029 49.230661 6579.4444 3.9535252e+09 0.13540336 0.036826172 -30.042578 49.119259 6581.5287 3.7546435e+09 0.13331610 0.035436524 -30.136629 49.012940 6583.6129 3.5883690e+09 0.13139248 0.034711455 -30.233636 48.903281 6585.6971 3.4354891e+09 0.12936669 0.033413457 -30.341127 48.781769 6587.7813 3.2664121e+09 0.12778895 0.033331480 -30.448617 48.660257 6589.8655 3.0723532e+09 0.12586101 0.031328816 -30.556107 48.538748 6591.9498 2.8847675e+09 0.12343514 0.028130210 -30.663597 48.417238 6594.0340 2.7218626e+09 0.12103205 0.026153867 -30.754603 48.310015 6596.1182 2.5908484e+09 0.11813347 0.025726736 -30.844565 48.203696 6598.2024 2.4833903e+09 0.11593601 0.025310517 -30.940890 48.089858 6600.2867 2.3653385e+09 0.11495568 0.025579181 -31.043707 47.968346 6602.3709 2.2280547e+09 0.11391770 0.027200143 -31.144864 47.846835 6604.4551 2.0851862e+09 0.11241393 0.026341498 -31.243006 47.725326 6606.5393 1.9517251e+09 0.11133744 0.026534825 -31.339386 47.607090 6608.6235 1.8411263e+09 0.10821782 0.023715885 -31.429349 47.500769 6610.7078 1.7550475e+09 0.10469885 0.024679229 -31.519313 47.394449 6612.7920 1.6711649e+09 0.10272788 0.023729012 -31.615574 47.276432 6614.8762 1.5789221e+09 0.10098017 0.023336821 -31.713717 47.154923 6616.9604 1.4912754e+09 0.099028075 0.023433038 -31.804134 47.042977 6619.0446 1.4193468e+09 0.097902243 0.024536687 -31.890019 46.936641 6621.1289 1.3652105e+09 0.096869647 0.025046732 -31.977310 46.827495 6623.2131 1.3059688e+09 0.095440728 0.024570774 -32.070780 46.705985 6625.2973 1.2387300e+09 0.094348525 0.025752390 -32.164462 46.584475 6627.3815 1.1615678e+09 0.092690127 0.025464192 -32.262605 46.462966 6629.4658 1.0888599e+09 0.091820197 0.026024894 -32.360747 46.341456 6631.5500 1.0314171e+09 0.090274862 0.025986633 -32.444074 46.233704 6633.6342 9.8132405e+08 0.088988529 0.026262978 -32.525858 46.127384 6635.7184 9.4491925e+08 0.087488647 0.026507526 -32.613021 46.014073 6637.8026 9.0558526e+08 0.086340833 0.025768301 -32.706491 45.892563 6639.8869 8.6000275e+08 0.086046596 0.025311088 -32.798462 45.771053 6641.9711 8.1140298e+08 0.086177210 0.025151598 -32.887258 45.649541 6644.0553 7.6174926e+08 0.085141701 0.025349584 -32.974786 45.530776 6646.1395 7.2267570e+08 0.084074692 0.025992374 -33.056571 45.424457 6648.2238 6.9118550e+08 0.082897469 0.027114066 -33.138355 45.318139 6650.3080 6.6218979e+08 0.082021447 0.026325741 -33.225295 45.197213 6652.3922 6.2924727e+08 0.081332261 0.027358430 -33.314090 45.071029 6654.4764 5.9658808e+08 0.080244513 0.027833266 -33.396275 44.956676 6656.5606 5.6532061e+08 0.078226070 0.028515489 -33.473970 44.850356 6658.6449 5.4024998e+08 0.076485847 0.031204757 -33.553333 44.741755 6660.7291 5.1855233e+08 0.074871034 0.032288701 -33.642128 44.620245 6662.8133 4.9365839e+08 0.073430571 0.032587958 -33.730875 44.498736 6664.8975 4.7037071e+08 0.072580394 0.028922069 -33.814998 44.377226 6666.9818 4.4534860e+08 0.072233938 0.027099901 -33.899121 44.255715 6669.0660 4.2140530e+08 0.071164679 0.028287945 -33.977647 44.147431 6671.1502 4.0378992e+08 0.071410005 0.026867489 -34.055341 44.041111 6673.2344 3.8469230e+08 0.071104638 0.027809803 -34.135769 43.928332 6675.3186 3.6742664e+08 0.069514628 0.030408665 -34.219891 43.806823 6677.4029 3.5105062e+08 0.067900444 0.031785511 -34.304014 43.685313 6679.4871 3.3110733e+08 0.067802529 0.029865269 -34.388137 43.563801 6681.5713 3.1589284e+08 0.068783780 0.030095653 -34.470131 43.444504 6683.6555 3.0340677e+08 0.069205363 0.032149260 -34.539648 43.338186 6685.7397 2.9121433e+08 0.068868108 0.033486192 -34.609165 43.231867 6687.8240 2.8210845e+08 0.066722846 0.033883365 -34.688910 43.114909 6689.9082 2.7075854e+08 0.064783308 0.033198507 -34.773034 42.993397 6691.9924 2.5607974e+08 0.063867926 0.032767119 -34.854536 42.869266 6694.0766 2.4355595e+08 0.063070268 0.031153621 -34.933984 42.743082 6696.1609 2.2964660e+08 0.063095035 0.029742618 -35.009253 42.625258 6698.2451 2.2088321e+08 0.062302814 0.030554214 -35.078771 42.518939 6700.3293 2.1003848e+08 0.060826080 0.030911969 -35.148288 42.412621 6702.4135 2.0173111e+08 0.059789315 0.033206928 -35.227491 42.291486 6704.4977 1.9348058e+08 0.060194521 0.036421971 -35.306939 42.169976 6706.5820 1.8458017e+08 0.060142321 0.039459268 -35.386389 42.048465 6708.6662 1.7628593e+08 0.059828339 0.040769031 -35.465839 41.926954 6710.7504 1.6373627e+08 0.058623915 0.040643378 -35.545288 41.805443 6712.8346 1.5353251e+08 0.057018033 0.043379587 -35.624737 41.683933 6714.9189 1.4345070e+08 0.055485419 0.047372488 -35.696387 41.570871 6717.0031 1.3776929e+08 0.053860733 0.049874078 -35.761815 41.464551 6719.0873 1.3479047e+08 0.051933542 0.051286902 -35.828276 41.356549 6721.1715 1.2988912e+08 0.052705472 0.050355578 -35.903052 41.235040 6723.2557 1.2325202e+08 0.051855164 0.049511574 -35.977827 41.113530 6725.3400 1.1802263e+08 0.048090634 0.041363663 -36.052603 40.992019 6727.4242 1.1158472e+08 0.047197958 0.040395254 -36.127378 40.870508 6729.5084 1.0651198e+08 0.046777166 0.040706563 -36.202154 40.748998 6731.5926 1.0125951e+08 0.045389667 0.042929460 -36.276929 40.627489 6733.6768 93780265. 0.044754036 0.047599110 -36.345241 40.516483 6735.7611 88156719. 0.046345606 0.050101364 -36.410668 40.410164 6737.8453 83667385. 0.048006618 0.056828261 -36.478396 40.300107 6739.9295 80887180. 0.048194706 0.063964099 -36.553171 40.178596 6742.0137 76679700. 0.046484763 0.068644217 -36.627450 40.057085 6744.0980 74969094. 0.042159339 0.077869179 -36.697553 39.935575 6746.1822 69920313. 0.041116666 0.076869252 -36.767656 39.814066 6748.2664 65201975. 0.038588739 0.068418439 -36.837757 39.688038 6750.3506 60172586. 0.037065029 0.072602832 -36.907858 39.561854 6752.4348 54624824. 0.036435444 0.073631281 -36.977960 39.439534 6754.5191 54961696. 0.037437453 0.075378749 -37.048063 39.318022 6756.6033 52559252. 0.051936448 0.075719256 -37.118166 39.196512 6758.6875 54778074. 0.036758418 0.075159151 -37.188269 39.075001 6760.7717 53877046. 0.0085555304 0.077532926 -37.258371 38.953491