# # 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 = 46.235195 km # Date (UTC) = 2015-11-22T09:42:54.157 # Date (julian) = 2457348.90479348 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.6840 6.1964146e+10 0.044592862 0.032187928 -16.927490 61.723375 6501.6844 5.6701141e+10 0.051367836 0.032791128 -17.123195 61.630509 6503.6847 5.2452811e+10 0.058423076 0.033394329 -17.299831 61.548079 6505.6851 4.8632866e+10 0.065818026 0.033997529 -17.476467 61.465650 6507.6854 4.4913649e+10 0.073566103 0.034600729 -17.669864 61.370069 6509.6858 4.1053058e+10 0.081617897 0.035203930 -17.867189 61.271406 6511.6861 3.7442181e+10 0.090104132 0.035807130 -18.050229 61.179885 6513.6865 3.4596479e+10 0.099320164 0.036410331 -18.222939 61.093529 6515.6868 3.2109803e+10 0.10917916 0.037013531 -18.396308 61.006771 6517.6872 2.9658358e+10 0.11952867 0.037616732 -18.589182 60.908092 6519.6875 2.7139132e+10 0.13027935 0.038219932 -18.782055 60.809414 6521.6879 2.4764719e+10 0.14151230 0.038823133 -18.952406 60.720645 6523.6882 2.2736584e+10 0.14848713 0.039349690 -19.117241 60.634302 6525.6886 2.1051195e+10 0.15459287 0.039703628 -19.282077 60.547959 6527.6889 1.9596743e+10 0.16116872 0.041216646 -19.446912 60.461616 6529.6893 1.8238504e+10 0.16659347 0.043333756 -19.611748 60.375273 6531.6896 1.6879272e+10 0.17098876 0.046232454 -19.790069 60.280206 6533.6900 1.5484140e+10 0.17417310 0.047812811 -19.973970 60.181528 6535.6903 1.4166934e+10 0.17528655 0.047924831 -20.145011 60.086870 6537.6907 1.3064316e+10 0.17657430 0.049010855 -20.301997 59.996603 6539.6910 1.2130795e+10 0.17629128 0.050480114 -20.458982 59.906336 6541.6914 1.1210062e+10 0.17413109 0.051102317 -20.636826 59.808247 6543.6917 1.0284603e+10 0.17214563 0.051563444 -20.816243 59.709567 6545.6921 9.4570840e+09 0.17043415 0.052461768 -20.977201 59.616780 6547.6924 8.7666272e+09 0.16933151 0.053550688 -21.130262 59.526513 6549.6928 8.2180276e+09 0.16797680 0.054672292 -21.282725 59.436844 6551.6931 7.7412163e+09 0.16653899 0.055479056 -21.431862 59.350501 6553.6935 7.2976862e+09 0.16476552 0.054986456 -21.580999 59.264158 6555.6938 6.8526535e+09 0.16307608 0.054270368 -21.743014 59.167649 6557.6942 6.3813809e+09 0.16159954 0.053430982 -21.913460 59.064484 6559.6945 5.9129513e+09 0.15953868 0.052308786 -22.074445 58.966156 6561.6949 5.5138794e+09 0.15713688 0.051030250 -22.219657 58.875889 6563.6952 5.1949366e+09 0.15457786 0.049124123 -22.364869 58.785622 6565.6956 4.9255036e+09 0.15239957 0.047528533 -22.510081 58.695355 6567.6960 4.6924458e+09 0.15054374 0.046028743 -22.655294 58.605088 6569.6963 4.4621194e+09 0.14853095 0.044897743 -22.805042 58.511224 6571.6967 4.2159412e+09 0.14643299 0.044313006 -22.966517 58.408060 6573.6970 3.9582798e+09 0.14377797 0.043098153 -23.126993 58.305534 6575.6974 3.7076284e+09 0.14114312 0.041675042 -23.268280 58.215267 6577.6977 3.4878121e+09 0.13807196 0.039124446 -23.409568 58.125000 6579.6981 3.3065851e+09 0.13468976 0.036686745 -23.548887 58.034733 6581.6984 3.1337521e+09 0.13180845 0.035385122 -23.686249 57.944464 6583.6988 2.9766629e+09 0.12951210 0.034667986 -23.823612 57.854196 6585.6991 2.8434274e+09 0.12759972 0.033411852 -23.960995 57.763916 6587.6995 2.7105543e+09 0.12610523 0.033313343 -24.098379 57.673636 6589.6998 2.5842150e+09 0.12414880 0.031657617 -24.241900 57.576306 6591.7002 2.4396094e+09 0.12183445 0.028411860 -24.394404 57.468657 6593.7005 2.2970488e+09 0.11972779 0.026450957 -24.542851 57.364075 6595.7009 2.1672377e+09 0.11724097 0.025696253 -24.672364 57.273808 6597.7012 2.0550298e+09 0.11519641 0.025501451 -24.801878 57.183541 6599.7016 1.9569258e+09 0.11392797 0.024971926 -24.931391 57.090808 6601.7019 1.8690944e+09 0.11325660 0.027376252 -25.060905 56.996615 6603.7023 1.7845173e+09 0.11157222 0.026247534 -25.191907 56.901701 6605.7026 1.6910476e+09 0.11087498 0.027254483 -25.339926 56.798537 6607.7030 1.5929632e+09 0.10882713 0.024318898 -25.487944 56.695373 6609.7033 1.4916638e+09 0.10583320 0.023914850 -25.616875 56.599843 6611.7037 1.4154931e+09 0.10303426 0.024509723 -25.742464 56.505651 6613.7040 1.3529528e+09 0.10163622 0.023831897 -25.866864 56.412648 6615.7044 1.2976307e+09 0.099710119 0.023273203 -25.988528 56.322381 6617.7047 1.2484431e+09 0.098328630 0.023672898 -26.110192 56.232114 6619.7051 1.1955304e+09 0.097081202 0.024696037 -26.231856 56.138885 6621.7054 1.1485799e+09 0.095350126 0.024855631 -26.353521 56.044694 6623.7058 1.1033520e+09 0.093092074 0.024753304 -26.478785 55.947717 6625.7061 1.0492141e+09 0.091779151 0.026240223 -26.617832 55.840066 6627.7065 9.9880779e+08 0.090059990 0.025589711 -26.756879 55.732416 6629.7068 9.5086528e+08 0.089120535 0.025981308 -26.875097 55.637923 6631.7072 9.0775128e+08 0.087684847 0.026002601 -26.992836 55.543732 6633.7075 8.7177285e+08 0.086511850 0.026275780 -27.110575 55.451226 6635.7079 8.3949695e+08 0.085237943 0.026505945 -27.228315 55.360958 6637.7082 8.0650224e+08 0.084263823 0.025814542 -27.346055 55.270690 6639.7086 7.6912834e+08 0.083977088 0.025374812 -27.474671 55.165099 6641.7089 7.3295821e+08 0.084317448 0.025150708 -27.604748 55.057450 6643.7093 6.9414142e+08 0.083591309 0.025299711 -27.724221 54.958576 6645.7096 6.6111316e+08 0.082718694 0.025784121 -27.838036 54.864384 6647.7100 6.3046813e+08 0.081772592 0.026811590 -27.951853 54.770190 6649.7103 6.0215767e+08 0.080904862 0.026654526 -28.065684 54.675985 6651.7107 5.8255637e+08 0.080284852 0.027028803 -28.179515 54.581781 6653.7110 5.6300291e+08 0.079590978 0.027888691 -28.299891 54.480093 6655.7114 5.3769466e+08 0.077987918 0.027904163 -28.425483 54.372443 6657.7117 5.0923455e+08 0.076479380 0.029726705 -28.545940 54.269194 6659.7121 4.7700787e+08 0.075102041 0.031686056 -28.655830 54.175004 6661.7124 4.5428585e+08 0.073632442 0.032897810 -28.765721 54.080813 6663.7128 4.3487122e+08 0.072260345 0.032285681 -28.872553 53.986621 6665.7131 4.1704277e+08 0.072022603 0.027378623 -28.978519 53.892428 6667.7135 4.0450504e+08 0.071219868 0.027365536 -29.087983 53.794089 6669.7138 3.8414664e+08 0.070422820 0.027622536 -29.209089 53.681954 6671.7142 3.6531358e+08 0.070327332 0.026875526 -29.330137 53.569888 6673.7145 3.4250632e+08 0.069897401 0.028527871 -29.436136 53.475657 6675.7149 3.2669195e+08 0.068143709 0.031167644 -29.542102 53.381466 6677.7152 3.1825790e+08 0.066995262 0.031341421 -29.646287 53.287275 6679.7156 3.0867412e+08 0.067030617 0.029676434 -29.748328 53.193083 6681.7159 2.9872798e+08 0.067888217 0.030206622 -29.850369 53.098891 6683.7163 2.8537948e+08 0.068302344 0.032238324 -29.965614 52.992510 6685.7166 2.7251743e+08 0.068013869 0.033461796 -30.082235 52.884860 6687.7170 2.6250413e+08 0.066003131 0.033943022 -30.186344 52.786310 6689.7174 2.5086163e+08 0.064011560 0.033370293 -30.284460 52.692119 6691.7177 2.3927917e+08 0.063144251 0.032831933 -30.384374 52.595628 6693.7181 2.2771219e+08 0.062369793 0.031357752 -30.496509 52.483492 6695.7184 2.1813830e+08 0.062237957 0.029727512 -30.608644 52.371357 6697.7188 2.0900164e+08 0.061626397 0.030182225 -30.708180 52.275348 6699.7191 1.9559739e+08 0.060352235 0.030926904 -30.806296 52.181156 6701.7195 1.8382613e+08 0.058814626 0.032465092 -30.904413 52.086964 6703.7198 1.7267803e+08 0.059119041 0.035476420 -31.002529 51.992773 6705.7202 1.6964857e+08 0.059195867 0.037948901 -31.100645 51.898583 6707.7205 1.6624905e+08 0.058910248 0.040083614 -31.206415 51.789987 6709.7209 1.6313807e+08 0.058012386 0.040674042 -31.314065 51.677851 6711.7212 1.5790136e+08 0.056185295 0.041512772 -31.413999 51.576002 6713.7216 1.5130448e+08 0.054353556 0.046296354 -31.508191 51.481810 6715.7219 1.4432134e+08 0.052905503 0.048116939 -31.602609 51.387164 6717.7223 1.3432233e+08 0.051252724 0.049829593 -31.705773 51.275028 6719.7226 1.2804028e+08 0.050100659 0.050683304 -31.808938 51.162893 6721.7230 1.2453719e+08 0.050519376 0.050521732 -31.904961 51.065039 6723.7233 1.2273284e+08 0.049055233 0.049772349 -31.999152 50.970848 6725.7237 1.1741865e+08 0.045455082 0.041123981 -32.095568 50.873322 6727.7240 1.1130965e+08 0.044809141 0.039995789 -32.198732 50.765671 6729.7244 1.0548563e+08 0.044106602 0.040562618 -32.301581 50.658199 6731.7247 1.0530941e+08 0.042652038 0.043192347 -32.387930 50.560079 6733.7251 1.0469751e+08 0.041820062 0.047860917 -32.474273 50.461962 6735.7254 98873175. 0.043284022 0.050063519 -32.568529 50.359361 6737.7258 88526213. 0.044937145 0.056447525 -32.671693 50.251711 6739.7261 80564601. 0.045339229 0.063715186 -32.773777 50.142979 6741.7265 78496960. 0.043764408 0.067830632 -32.872456 50.030844 6743.7268 77474335. 0.039724454 0.075950566 -32.970984 49.918882 6745.7272 79306431. 0.038289201 0.078872584 -33.057348 49.820739 6747.7275 75365721. 0.034312989 0.067110702 -33.143702 49.722608 6749.7279 71607682. 0.032717437 0.072078640 -33.233694 49.620062 6751.7282 68344155. 0.030263015 0.074019569 -33.327888 49.512413 6753.7286 62747269. 0.029256196 0.075335097 -33.422079 49.403717 6755.7289 62020498. 0.027429662 0.074285757 -33.516257 49.291601 6757.7293 60382687. 0.026847113 0.074526891 -33.610388 49.179590 6759.7296 58547466. 0.028250173 0.075996026 -33.696754 49.085360 6761.7300 54530802. 0.035117041 0.078028535 -33.783110 48.991154 6763.7303 51486400. 0.035562671 0.078662003 -33.870997 48.888754 6765.7307 51107487. 0.029978144 0.079664582 -33.960704 48.776619