# # 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 = 42.890682 km # Date (UTC) = 2011-01-13T08:00:47.182 # Date (julian) = 2455574.83387942 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6510.3006 7.4998749e+10 0.099374346 0.035389316 128.52826 45.826433 6512.9824 6.2876611e+10 0.11184385 0.036198016 128.64573 45.678349 6515.6642 5.3414011e+10 0.12456685 0.037006716 128.77201 45.515985 6518.3461 4.6032974e+10 0.13763680 0.037815417 128.88601 45.373516 6521.0279 3.9900779e+10 0.15099534 0.038624117 128.99650 45.236712 6523.7097 3.4966973e+10 0.15975751 0.039355019 129.12086 45.077469 6526.3916 3.0615339e+10 0.16513907 0.040078603 129.24375 44.920597 6529.0734 2.6767067e+10 0.16941784 0.042352714 129.35424 44.783791 6531.7552 2.3769025e+10 0.17340338 0.046327942 129.46308 44.645332 6534.4371 2.1316128e+10 0.17513374 0.048066825 129.56832 44.503265 6537.1189 1.9017137e+10 0.17576339 0.048741288 129.67978 44.355287 6539.8007 1.6865781e+10 0.17616128 0.050612912 129.80005 44.198937 6542.4826 1.4922837e+10 0.17476183 0.051185453 129.90903 44.053313 6545.1644 1.3302734e+10 0.17387823 0.052457040 130.01426 43.911246 6547.8463 1.2080652e+10 0.17211849 0.053609179 130.11502 43.769180 6550.5281 1.0998917e+10 0.16985072 0.055117588 130.21499 43.627114 6553.2099 9.9519687e+09 0.16671723 0.055229541 130.33425 43.471478 6555.8918 8.9815915e+09 0.16153283 0.054104073 130.44869 43.319227 6558.5736 8.1114190e+09 0.15621623 0.052750531 130.54866 43.177161 6561.2554 7.4359265e+09 0.15039399 0.051246810 130.64864 43.037129 6563.9373 6.8817805e+09 0.14558400 0.048844166 130.74861 42.900325 6566.6191 6.3185684e+09 0.14275078 0.046832661 130.85553 42.751099 6569.3009 5.7591591e+09 0.14027947 0.044872011 130.96979 42.588734 6571.9828 5.2390431e+09 0.13835375 0.044234861 131.06796 42.447389 6574.6646 4.7879348e+09 0.13557842 0.042535796 131.16269 42.310563 6577.3464 4.4396658e+09 0.13256010 0.039676195 131.25740 42.168901 6580.0283 4.1136617e+09 0.12937088 0.036494620 131.35255 42.026516 6582.7101 3.7754059e+09 0.12651415 0.035100553 131.46680 41.870166 6585.3919 3.4532684e+09 0.12380337 0.033657419 131.57214 41.718948 6588.0738 3.1473204e+09 0.12148929 0.033355291 131.66160 41.576882 6590.7556 2.8936165e+09 0.11823983 0.029656497 131.75346 41.434815 6593.4375 2.6790688e+09 0.11504527 0.026695521 131.84817 41.292749 6596.1193 2.4919844e+09 0.11111095 0.025726732 131.94288 41.153621 6598.8011 2.3265923e+09 0.10804283 0.025024680 132.03759 41.016817 6601.4830 2.1511154e+09 0.10710649 0.027273137 132.13725 40.863199 6604.1648 1.9786755e+09 0.10483550 0.026169127 132.23946 40.700883 6606.8466 1.8173313e+09 0.10321572 0.025982594 132.32899 40.563897 6609.5285 1.6755335e+09 0.098867738 0.023862911 132.41844 40.426596 6612.2103 1.5654165e+09 0.095136450 0.024163622 132.50789 40.284529 6614.8921 1.4639695e+09 0.092910214 0.023325845 132.59734 40.143482 6617.5740 1.3752005e+09 0.090582243 0.023629548 132.68679 40.006679 6620.2558 1.2880041e+09 0.089269703 0.024849631 132.77998 39.862378 6622.9376 1.1943364e+09 0.087607581 0.024508423 132.88221 39.700012 6625.6195 1.1031078e+09 0.086307821 0.026136828 132.97307 39.553761 6628.3013 1.0196202e+09 0.084848231 0.025825431 133.05726 39.416957 6630.9831 9.5005644e+08 0.083356586 0.025930724 133.14529 39.276313 6633.6650 8.8902552e+08 0.082097657 0.026268352 133.23473 39.134246 6636.3468 8.3751354e+08 0.080664143 0.026415068 133.31983 38.996526 6639.0287 7.8863630e+08 0.079672224 0.025617833 133.40403 38.859700 6641.7105 7.3716831e+08 0.080674930 0.025150713 133.49940 38.699147 6644.3923 6.8171808e+08 0.079952968 0.025386008 133.59102 38.543587 6647.0742 6.2925924e+08 0.079006968 0.026476826 133.66994 38.406781 6649.7560 5.8644987e+08 0.078201322 0.026591584 133.75079 38.269976 6652.4378 5.5184393e+08 0.077794958 0.027370986 133.83497 38.133173 6655.1197 5.2116553e+08 0.076594872 0.027659663 133.92476 37.984480 6657.8015 4.8334123e+08 0.074678059 0.029830828 134.02096 37.822115 6660.4833 4.4796808e+08 0.073028278 0.032065328 134.10331 37.680254 6663.1652 4.1513939e+08 0.071553610 0.032437439 134.18224 37.543449 6665.8470 3.8734694e+08 0.071070437 0.027159277 134.26117 37.401899 6668.5288 3.6770379e+08 0.069903293 0.027938763 134.34009 37.259860 6671.2107 3.4552166e+08 0.069606712 0.026868351 134.41902 37.123034 6673.8925 3.2340168e+08 0.068724009 0.028794038 134.49908 36.984263 6676.5743 3.0428332e+08 0.065972436 0.032083889 134.58928 36.827913 6679.2562 2.8366662e+08 0.065210035 0.030056072 134.67455 36.677816 6681.9380 2.6440792e+08 0.066454380 0.030376993 134.75347 36.535749 6684.6199 2.5092996e+08 0.066742272 0.032685547 134.83240 36.396509 6687.3017 2.3674157e+08 0.064912018 0.034174644 134.91133 36.259702 6689.9835 2.2519282e+08 0.062347435 0.033130693 134.99360 36.106623 6692.6654 2.1055348e+08 0.061194512 0.031992684 135.07779 35.944258 6695.3472 1.9511909e+08 0.060483503 0.029795698 135.15685 35.806784 6698.0290 1.8424941e+08 0.059510458 0.030257667 135.23616 35.668549 6700.7109 1.7272409e+08 0.057189464 0.031194989 135.32035 35.512196 6703.3927 1.6253886e+08 0.056452240 0.034657902 135.40022 35.363865 6706.0745 1.5116327e+08 0.056215071 0.038576132 135.47388 35.227062 6708.7564 1.3958819e+08 0.055304053 0.040867242 135.54755 35.087564 6711.4382 1.2962536e+08 0.052845719 0.041190794 135.62123 34.945476 6714.1200 1.2262919e+08 0.049876906 0.047312433 135.70131 34.794694 6716.8019 1.1622992e+08 0.047285411 0.049582455 135.78550 34.638344 6719.4837 1.1217141e+08 0.044719498 0.050910275 135.85973 34.500495 6722.1656 1.0972028e+08 0.044606034 0.050400541 135.93360 34.362788 6724.8474 1.0140712e+08 0.039937913 0.042850449 136.01178 34.206438 6727.5292 97341251. 0.037729637 0.040255313 136.08823 34.055562 6730.2111 89729536. 0.035914384 0.040668286 136.16189 33.913495 6732.8929 82616208. 0.033737735 0.043904587 136.23773 33.764534 6735.5747 80010592. 0.034054961 0.049903547 136.31591 33.608183 6738.2566 75052057. 0.035160428 0.058733583 136.38608 33.467854 6740.9384 70970182. 0.033674439 0.065653453 136.45448 33.331049 6743.6202 66556807. 0.027839555 0.075231513 136.53186 33.176277 6746.3021 62374493. 0.023182241 0.075475399 136.60888 33.024937 6748.9839 59221622. 0.017900531 0.072193249 136.68254 32.888131 6751.6657 56839524. 0.0079026553 0.073993149 136.75567 32.742232 6754.3476 54028668. -0.028582804 0.075654529 136.82784 32.579867 6757.0294 51879608. -0.0040312568 0.076650806 136.89740 32.435212 6759.7112 50233088. 0.062131861 0.075991590 136.96579 32.298408