# # 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 = 38.668424 km # Date (UTC) = 2016-12-27T09:51:10.438 # Date (julian) = 2457749.91053747 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6522.6971 2.7824158e+10 0.16659513 0.039099793 -29.196149 48.108177 6524.7780 2.5408419e+10 0.17113711 0.039703338 -29.283255 48.017442 6526.8588 2.3173809e+10 0.17771848 0.040568485 -29.373284 47.929646 6528.9397 2.1251995e+10 0.17778895 0.042187965 -29.464008 47.842551 6531.0206 1.9480490e+10 0.18089780 0.045258657 -29.554543 47.755266 6533.1015 1.7924081e+10 0.18074039 0.047562710 -29.641638 47.664542 6535.1823 1.6496002e+10 0.17825859 0.048145195 -29.728733 47.573818 6537.2632 1.5098703e+10 0.18267085 0.048809324 -29.815829 47.484171 6539.3441 1.3881739e+10 0.18207718 0.050060151 -29.902923 47.397077 6541.4250 1.2795724e+10 0.18121423 0.051188713 -29.990018 47.309982 6543.5059 1.1845724e+10 0.17681188 0.051514656 -30.077119 47.222881 6545.5867 1.0992363e+10 0.17263895 0.052460823 -30.164226 47.135774 6547.6676 1.0178610e+10 0.17268821 0.053541241 -30.251332 47.048667 6549.7485 9.4277810e+09 0.17048137 0.054729038 -30.335578 46.958719 6551.8294 8.7361805e+09 0.16773518 0.055526867 -30.419044 46.867995 6553.9102 8.0986410e+09 0.16249255 0.054877507 -30.502510 46.777271 6555.9911 7.4829133e+09 0.16025889 0.054020600 -30.585975 46.686547 6558.0720 6.9132399e+09 0.15534977 0.053177969 -30.669441 46.595823 6560.1529 6.3619772e+09 0.15182831 0.052136490 -30.752907 46.506096 6562.2337 5.8386130e+09 0.14869925 0.050657500 -30.836373 46.419001 6564.3146 5.3527937e+09 0.14930317 0.048629018 -30.919839 46.331907 6566.3955 4.9329401e+09 0.14895856 0.046959161 -31.003310 46.242924 6568.4764 4.5841663e+09 0.14251987 0.045333776 -31.086788 46.152188 6570.5572 4.2721013e+09 0.13885843 0.044686684 -31.170265 46.061452 6572.6381 3.9910433e+09 0.13679560 0.043864727 -31.250963 45.973496 6574.7190 3.7274381e+09 0.13742322 0.042509679 -31.330800 45.886400 6576.7999 3.4970915e+09 0.13129492 0.040450737 -31.410637 45.799276 6578.8807 3.2822587e+09 0.12788625 0.037258829 -31.490473 45.708552 6580.9616 3.0837284e+09 0.12374357 0.035632085 -31.570310 45.617828 6583.0425 2.8857741e+09 0.12302468 0.035000161 -31.650147 45.528020 6585.1234 2.7009654e+09 0.12139722 0.033872147 -31.729984 45.440926 6587.2042 2.5332516e+09 0.11696017 0.033203621 -31.809822 45.353832 6589.2851 2.3668013e+09 0.11590375 0.032480336 -31.887862 45.264929 6591.3660 2.2144096e+09 0.10837930 0.028788933 -31.964080 45.174193 6593.4469 2.0579182e+09 0.10801803 0.026686771 -32.040298 45.083457 6595.5277 1.9066430e+09 0.11049099 0.025678299 -32.119199 44.992730 6597.6086 1.7770969e+09 0.10426935 0.025530671 -32.199035 44.902006 6599.6895 1.6532314e+09 0.10308026 0.024971200 -32.278866 44.811288 6601.7704 1.5438051e+09 0.099135360 0.027408490 -32.355132 44.724136 6603.8512 1.4376588e+09 0.099342755 0.026159340 -32.431341 44.637040 6605.9321 1.3381105e+09 0.099664065 0.027447017 -32.507549 44.549109 6608.0130 1.2500943e+09 0.097499715 0.023732028 -32.583757 44.458385 6610.0939 1.1725381e+09 0.094829790 0.024092670 -32.659965 44.367661 6612.1747 1.1028315e+09 0.095375435 0.024190188 -32.734455 44.278655 6614.2556 1.0470617e+09 0.092336367 0.023764379 -32.807044 44.191549 6616.3365 9.9881327e+08 0.081032998 0.023335112 -32.879633 44.104444 6618.4174 9.4029399e+08 0.080284072 0.024085962 -32.961679 44.006576 6620.4982 8.7798176e+08 0.086769929 0.024927758 -33.047414 43.904510 6622.5791 8.1858972e+08 0.092519077 0.024603849 -33.129597 43.805506 6624.6600 7.6610572e+08 0.094449254 0.025215604 -33.202177 43.714782 6626.7409 7.2889222e+08 0.084560362 0.025646959 -33.274756 43.624058 6628.8218 6.9462358e+08 0.080476485 0.026036734 -33.347335 43.535201 6630.9026 6.5795950e+08 0.081756889 0.025930526 -33.419912 43.448106 6632.9835 6.2484081e+08 0.080959035 0.026150275 -33.492490 43.361010 6635.0644 5.9382046e+08 0.079160143 0.026409442 -33.565077 43.271153 6637.1453 5.6288865e+08 0.069977219 0.026090271 -33.637665 43.180417 6639.2261 5.2710069e+08 0.076060814 0.025547251 -33.710235 43.089700 6641.3070 4.9474019e+08 0.081530461 0.025149343 -33.779193 43.002598 6643.3879 4.6425020e+08 0.088998977 0.025251184 -33.848144 42.915502 6645.4688 4.4322711e+08 0.075774146 0.025671279 -33.919232 42.824695 6647.5496 4.2326711e+08 0.068006022 0.026727164 -33.996802 42.722629 6649.6305 3.9919751e+08 0.073218033 0.026764564 -34.074371 42.620563 6651.7114 3.7544303e+08 0.064020091 0.027029338 -34.147956 42.527554 6653.7923 3.4545989e+08 0.069035980 0.027930161 -34.220535 42.436831 6655.8731 3.1573284e+08 0.085676350 0.027970997 -34.292803 42.346263 6657.9540 2.9378022e+08 0.096132739 0.030007733 -34.358124 42.259169 6660.0349 2.8072851e+08 0.091781522 0.031657707 -34.423445 42.172075 6662.1158 2.7711615e+08 0.058059666 0.032979322 -34.489812 42.083934 6664.1966 2.6819277e+08 0.053251162 0.031486601 -34.558771 41.993198 6666.2775 2.5301407e+08 0.066620141 0.026962672 -34.627730 41.902462 6668.3584 2.3691955e+08 0.063275557 0.027787923 -34.701270 41.807869 6670.4393 2.1777440e+08 0.072312920 0.027125128 -34.778839 41.709885 6672.5201 2.0154996e+08 0.069584777 0.027181082 -34.855397 41.612501 6674.6010 1.8530328e+08 0.095659228 0.029461787 -34.920718 41.521778 6676.6819 1.7709538e+08 0.076815882 0.032153199 -34.986039 41.431054 6678.7628 1.7045969e+08 0.060891430 0.030426443 -35.051360 41.340330 6680.8436 1.6325687e+08 0.067092949 0.029623594 -35.116681 41.249607 6682.9245 1.5703893e+08 0.066040720 0.031130910 -35.182003 41.158883 6685.0054 1.4865611e+08 0.058358452 0.032710535 -35.251990 41.064011 6687.0863 1.3869493e+08 0.059474099 0.034294787 -35.325478 40.966028 6689.1671 1.2940076e+08 0.061813912 0.033865567 -35.397971 40.868930 6691.2480 1.1858531e+08 0.083514128 0.032942746 -35.463301 40.778194 6693.3289 1.1202947e+08 0.080086992 0.031491257 -35.528631 40.687458 6695.4098 1.0979261e+08 0.032664350 0.029784204 -35.596952 40.594064 6697.4906 1.0114019e+08 0.071128293 0.030153358 -35.670440 40.496080 6699.5715 96558700. 0.056666739 0.031063080 -35.743928 40.398096 6701.6524 90685749. 0.093095338 0.032366700 -35.806594 40.306772 6703.7333 89757632. 0.074395129 0.035510121 -35.868285 40.216049 6705.8141 91370480. 0.041134053 0.038116000 -35.931225 40.123490 6707.8950 90159148. 0.020795725 0.040058615 -36.000631 40.021424 6709.9759 83837090. 0.032644095 0.040511823 -36.070037 39.919357 6712.0568 75266589. 0.081958421 0.041935374 -36.133947 39.827957 6714.1377 69985651. 0.082747373 0.047313757 -36.195639 39.740863 6716.2185 66645635. 0.083282185 0.048723232 -36.257330 39.653769 6718.2994 67509050. 0.037976635 0.050278713 -36.326412 39.552336 6720.3803 66573155. 0.035792750 0.050375704 -36.395828 39.450255 6722.4612 63523712. 0.024940445 0.050035096 -36.461322 39.355782 6724.5420 58247120. 0.048396832 0.045400357 -36.523013 39.268687 6726.6229 53570102. 0.050230395 0.040956985 -36.584705 39.181591 6728.7038 48333509. 0.041259889 0.040625589 -36.652198 39.083236 6730.7847 43058566. 0.045635725 0.041454764 -36.721604 38.981171 6732.8655 39213173. 0.095135679 0.043899551 -36.789773 38.880340 6734.9464 41273555. 0.10660293 0.049296657 -36.855096 38.782356 6737.0273 46039957. 0.086991141 0.054222480 -36.920418 38.684371 6739.1082 50275783. 0.047229642 0.062958919 -36.979546 38.592582