# # 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 = 35.060880 km # Date (UTC) = 2011-01-20T08:18:35.395 # Date (julian) = 2455581.84624299 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.0852 1.0635334e+11 0.082401256 0.034419725 -9.0880316 47.183961 6509.3395 9.0658671e+10 0.092771583 0.035099524 -9.2084526 47.033718 6511.5939 7.7665472e+10 0.10335198 0.035779323 -9.3382013 46.874481 6513.8483 6.6491771e+10 0.11412195 0.036459121 -9.4465017 46.735927 6516.1026 5.7167462e+10 0.12511988 0.037138920 -9.5526566 46.599442 6518.3570 4.9351746e+10 0.13634769 0.037818719 -9.6752837 46.436290 6520.6114 4.2606360e+10 0.14778153 0.038498517 -9.7937830 46.277895 6522.8658 3.7153253e+10 0.15715858 0.039143958 -9.8948828 46.141410 6525.1201 3.3178817e+10 0.16349083 0.039768506 -9.9959825 46.004925 6527.3745 3.0211658e+10 0.16823051 0.040988353 -10.097082 45.868440 6529.6289 2.7385495e+10 0.17216265 0.043237497 -10.204517 45.723978 6531.8832 2.4563481e+10 0.17553298 0.046514222 -10.328344 45.558876 6534.1376 2.1919919e+10 0.17690975 0.047983047 -10.435978 45.410454 6536.3920 1.9606194e+10 0.17708189 0.048141198 -10.532023 45.273968 6538.6463 1.7864499e+10 0.17776051 0.049471409 -10.631124 45.137483 6540.9007 1.6389537e+10 0.17697175 0.051279615 -10.732225 45.000998 6543.1551 1.4859076e+10 0.17520852 0.051422591 -10.840187 44.846567 6545.4094 1.3377638e+10 0.17263403 0.052459235 -10.952242 44.681431 6547.6638 1.2008420e+10 0.16975570 0.053539796 -11.049395 44.542964 6549.9182 1.0880184e+10 0.16703069 0.054901967 -11.145440 44.406481 6552.1725 1.0004063e+10 0.16421982 0.055543339 -11.241485 44.269996 6554.4269 9.2225676e+09 0.16139363 0.054841339 -11.337531 44.133510 6556.6813 8.5085995e+09 0.15873198 0.053912966 -11.433576 43.992099 6558.9356 7.8515918e+09 0.15557751 0.052442023 -11.529604 43.850574 6561.1900 7.2733926e+09 0.15229710 0.051279048 -11.620630 43.714055 6563.4444 6.7176943e+09 0.14923623 0.049414325 -11.711995 43.577166 6565.6987 6.1404513e+09 0.14639594 0.047524963 -11.824051 43.417929 6567.9531 5.5769398e+09 0.14433365 0.045811306 -11.929319 43.264393 6570.2075 5.0630343e+09 0.14237705 0.044831563 -12.020309 43.122852 6572.4618 4.6391615e+09 0.14002030 0.043965666 -12.109560 42.983050 6574.7162 4.2866335e+09 0.13717848 0.042511008 -12.195495 42.846565 6576.9706 3.9570996e+09 0.13416593 0.040254229 -12.283279 42.710081 6579.2250 3.6585349e+09 0.13052021 0.036946831 -12.374269 42.573597 6581.4793 3.3905594e+09 0.12736563 0.035451464 -12.465259 42.435154 6583.7337 3.1477142e+09 0.12423780 0.034650305 -12.556249 42.293613 6585.9881 2.9212113e+09 0.12094244 0.033180843 -12.645170 42.154141 6588.2424 2.7119454e+09 0.11816400 0.033298972 -12.731105 42.017655 6590.4968 2.5182528e+09 0.11448749 0.030137952 -12.817040 41.881170 6592.7512 2.3404306e+09 0.11074131 0.027343918 -12.902975 41.744685 6595.0055 2.1807626e+09 0.10675857 0.025624145 -12.988910 41.605911 6597.2599 2.0342841e+09 0.10278037 0.025640713 -13.074845 41.464372 6599.5143 1.8847389e+09 0.10052636 0.024960661 -13.164779 41.314434 6601.7686 1.7376211e+09 0.099982306 0.027407673 -13.259142 41.155197 6604.0230 1.5980103e+09 0.098664862 0.026084935 -13.346940 41.013682 6606.2774 1.4727176e+09 0.098469056 0.027005537 -13.432875 40.877197 6608.5317 1.3686889e+09 0.095984959 0.023718312 -13.514751 40.736684 6610.7861 1.2772055e+09 0.093009020 0.024754086 -13.595617 40.595169 6613.0405 1.1929844e+09 0.091922321 0.023588441 -13.676495 40.457789 6615.2948 1.1151075e+09 0.090697130 0.023260603 -13.757375 40.321304 6617.5492 1.0442296e+09 0.089702795 0.023621338 -13.838255 40.184819 6619.8036 9.7804548e+08 0.089138382 0.024719805 -13.919135 40.048334 6622.0579 9.2204828e+08 0.087941436 0.024742569 -14.000015 39.907474 6624.3123 8.6510100e+08 0.086148376 0.025029491 -14.080895 39.765934 6626.5667 8.1153884e+08 0.084564718 0.025868896 -14.161775 39.628880 6628.8211 7.6202837e+08 0.083149098 0.026036450 -14.242655 39.492395 6631.0754 7.1678918e+08 0.081356348 0.025938427 -14.318938 39.355910 6633.3298 6.7275479e+08 0.079923431 0.026209831 -14.394763 39.219425 6635.5842 6.3119625e+08 0.078279779 0.026487391 -14.475294 39.078235 6637.8385 5.9195983e+08 0.076983841 0.025750728 -14.556175 38.936695 6640.0929 5.5512819e+08 0.076702457 0.025259287 -14.632239 38.799970 6642.3473 5.2008464e+08 0.076540120 0.025165907 -14.708064 38.663484 6644.6016 4.8590468e+08 0.075340648 0.025408629 -14.783889 38.526999 6646.8560 4.5779174e+08 0.074013309 0.026363239 -14.859714 38.390514 6649.1104 4.3154070e+08 0.072754058 0.027481556 -14.935539 38.254029 6651.3647 4.0350959e+08 0.072531344 0.026763680 -15.011273 38.117453 6653.6191 3.7747570e+08 0.072212644 0.027841752 -15.082043 37.975914 6655.8735 3.5270117e+08 0.070712780 0.027971135 -15.153013 37.834576 6658.1278 3.2925400e+08 0.069330720 0.030287799 -15.228838 37.698091 6660.3822 3.0980201e+08 0.067879852 0.031973403 -15.304353 37.561606 6662.6366 2.8513552e+08 0.066535829 0.032687117 -15.375123 37.425120 6664.8909 2.6424769e+08 0.065707787 0.028946175 -15.446314 37.288634 6667.1453 2.4762063e+08 0.065136225 0.027156832 -15.522139 37.152149 6669.3997 2.3196423e+08 0.063854557 0.027945207 -15.597433 37.015664 6671.6540 2.1859871e+08 0.063507778 0.026874669 -15.668203 36.879179 6673.9084 2.0694149e+08 0.062395340 0.028817815 -15.738972 36.742053 6676.1628 1.9241364e+08 0.059664424 0.031818635 -15.809742 36.600514 6678.4171 1.8227124e+08 0.058246206 0.030657607 -15.880512 36.459725 6680.6715 1.7192831e+08 0.058407206 0.029586425 -15.951282 36.323240 6682.9259 1.6031657e+08 0.058590036 0.031131954 -16.021192 36.186755 6685.1803 1.5398508e+08 0.057978018 0.032895229 -16.086906 36.050270 6687.4346 1.4207250e+08 0.055448550 0.034100508 -16.153592 35.913785 6689.6890 1.3327168e+08 0.052626769 0.033395823 -16.224363 35.777299 6691.9434 1.2528728e+08 0.051164218 0.032778693 -16.295133 35.640814 6694.1977 1.1678382e+08 0.049835915 0.030983904 -16.365903 35.504331 6696.4521 1.0874512e+08 0.049237035 0.029863621 -16.435482 35.367847 6698.7065 97645842. 0.047481415 0.031187517 -16.501196 35.231362 6700.9608 91413494. 0.045357406 0.031380392 -16.566911 35.094877 6703.2152 86791970. 0.044961457 0.034213728 -16.632626 34.958392 6705.4696 83692240. 0.044976302 0.037503399 -16.698341 34.821907 6707.7239 80717324. 0.044293439 0.040083124 -16.764056 34.685422 6709.9783 77756545. 0.042348360 0.040510296 -16.833067 34.542091 6712.2327 75412895. 0.038306222 0.042261949 -16.909738 34.382853 6714.4870 67340894. 0.029585253 0.047340024 -16.979777 34.237387 6716.7414 60889883. -0.011910954 0.049493383 -17.045491 34.100902 6718.9958 56407110. 0.016014259 0.051363257 -17.111206 33.964417 6721.2501 57504588. 0.090931134 0.050379268 -17.176922 33.827932