# # 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 = 43.732829 km # Date (UTC) = 2011-01-21T07:50:27.900 # Date (julian) = 2455582.82671181 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6508.9962 8.8680598e+10 0.091856121 0.034996002 128.29231 51.836837 6511.8419 7.4019059e+10 0.10491065 0.035854091 128.45821 51.664557 6514.6875 6.2490660e+10 0.11818021 0.036712180 128.63979 51.480209 6517.5331 5.3681519e+10 0.13182028 0.037570269 128.82572 51.291419 6520.3787 4.6229590e+10 0.14576108 0.038428358 128.98524 51.119137 6523.2243 3.9942378e+10 0.15658705 0.039234714 129.16222 50.932883 6526.0700 3.4943109e+10 0.16184140 0.039741428 129.34000 50.745996 6528.9156 3.0398374e+10 0.16696318 0.042168810 129.49952 50.573715 6531.7612 2.6448547e+10 0.17115633 0.046336606 129.67330 50.385587 6534.6068 2.3143956e+10 0.17305940 0.048114307 129.84167 50.200623 6537.4524 2.0256447e+10 0.17365949 0.048898528 129.99481 50.028342 6540.2981 1.8018605e+10 0.17422440 0.050994909 130.14795 49.861393 6543.1437 1.6076236e+10 0.17309229 0.051419600 130.30593 49.686076 6545.9893 1.4306976e+10 0.17162137 0.052464430 130.47716 49.485076 6548.8349 1.2746131e+10 0.17068917 0.053916978 130.62575 49.316543 6551.6805 1.1438371e+10 0.16905784 0.055474627 130.77251 49.148359 6554.5261 1.0374799e+10 0.16534814 0.054843421 130.91926 48.976077 6557.3718 9.3553701e+09 0.15984249 0.053633083 131.07948 48.781092 6560.2174 8.4011224e+09 0.15315916 0.052078308 131.23564 48.595792 6563.0630 7.5443232e+09 0.14661478 0.049855486 131.38240 48.429894 6565.9086 6.8406399e+09 0.14145799 0.047286643 131.51793 48.258377 6568.7542 6.1934585e+09 0.13873603 0.045078334 131.66124 48.077111 6571.5999 5.5828898e+09 0.13660698 0.044339441 131.82502 47.876111 6574.4455 5.0199153e+09 0.13377395 0.042641042 131.95992 47.702957 6577.2911 4.5387971e+09 0.13085866 0.039763125 132.09391 47.533244 6580.1367 4.1466458e+09 0.12755045 0.036394405 132.22791 47.367344 6582.9823 3.7909499e+09 0.12464717 0.035026473 132.36191 47.196115 6585.8280 3.4870751e+09 0.12153500 0.033308841 132.49591 47.023834 6588.6736 3.1946051e+09 0.11902150 0.033154988 132.62990 46.851553 6591.5192 2.9028428e+09 0.11571319 0.028616059 132.77433 46.659147 6594.3648 2.6217390e+09 0.11251630 0.025972258 132.91562 46.470694 6597.2104 2.3579433e+09 0.10908247 0.025656322 133.04324 46.304796 6600.0561 2.1462336e+09 0.10734822 0.025105109 133.17086 46.133853 6602.9017 1.9722302e+09 0.10575386 0.026747183 133.29847 45.961572 6605.7473 1.8152668e+09 0.10409995 0.027291961 133.42608 45.789291 6608.5929 1.6813689e+09 0.10030124 0.023716695 133.54950 45.617029 6611.4385 1.5602777e+09 0.095879829 0.024678804 133.67072 45.444774 6614.2841 1.4533067e+09 0.093688959 0.023744726 133.79195 45.272494 6617.1298 1.3543960e+09 0.091171582 0.023482273 133.91318 45.103539 6619.9754 1.2613296e+09 0.089512401 0.024761259 134.03441 44.937640 6622.8210 1.1715379e+09 0.087046846 0.024539468 134.14956 44.765653 6625.6666 1.0724332e+09 0.084965157 0.026193087 134.27470 44.582264 6628.5122 9.8170877e+08 0.083065708 0.025911071 134.41499 44.382513 6631.3579 8.9623406e+08 0.081593676 0.025967117 134.52984 44.210232 6634.2035 8.2606940e+08 0.080361361 0.026341686 134.64470 44.037951 6637.0491 7.6804790e+08 0.079114305 0.026137364 134.75956 43.865670 6639.8947 7.1118599e+08 0.079138084 0.025308282 134.87441 43.693390 6642.7403 6.5816041e+08 0.079555034 0.025181992 134.98926 43.523291 6645.5860 6.1141038e+08 0.078585336 0.025726184 135.10412 43.357390 6648.4316 5.6671839e+08 0.077504760 0.027253183 135.21403 43.186547 6651.2772 5.2707822e+08 0.077051549 0.026696596 135.32250 43.014266 6654.1228 4.9164252e+08 0.076462989 0.027983905 135.43097 42.841985 6656.9684 4.5834469e+08 0.074350917 0.028873406 135.53944 42.669705 6659.8141 4.2965623e+08 0.072702254 0.031664786 135.64792 42.497424 6662.6597 3.9918102e+08 0.071065055 0.032674156 135.75639 42.325144 6665.5053 3.7250128e+08 0.070342142 0.027719192 135.86486 42.152864 6668.3509 3.4679409e+08 0.069368336 0.027781305 135.97333 41.980583 6671.1965 3.2413285e+08 0.068939278 0.026868149 136.07582 41.814290 6674.0421 3.0230986e+08 0.067956079 0.028990346 136.17791 41.646020 6676.8878 2.8162989e+08 0.065027664 0.032285885 136.28001 41.473739 6679.7334 2.6499979e+08 0.064622142 0.029661733 136.38210 41.301458 6682.5790 2.5334855e+08 0.065340300 0.030866926 136.48420 41.129178 6685.4246 2.4241020e+08 0.064844979 0.033153346 136.58628 40.956899 6688.2702 2.2667754e+08 0.061723902 0.033847572 136.68837 40.784619 6691.1159 2.1051422e+08 0.059627331 0.032973927 136.79047 40.612991 6693.9615 1.9601206e+08 0.058258956 0.031274241 136.89256 40.447090 6696.8071 1.8209537e+08 0.057830979 0.030011120 136.99978 40.262399 6699.6527 1.6718758e+08 0.055994317 0.030988158 137.10960 40.066915 6702.4983 1.5273894e+08 0.054108753 0.033274657 137.21170 39.894637 6705.3440 1.3909851e+08 0.054131484 0.037280095 137.30980 39.722357 6708.1896 1.3236827e+08 0.053458320 0.040250021 137.40551 39.550443 6711.0352 1.2552858e+08 0.051256394 0.040732277 137.50123 39.384541 6713.8808 1.1869375e+08 0.048180860 0.046872346 137.59381 39.215511 6716.7264 1.1247254e+08 0.045547425 0.049471332 137.68314 39.043230 6719.5721 1.0458391e+08 0.042887073 0.050826346 137.77836 38.870949 6722.4177 98580747. 0.042535426 0.050088851 137.87407 38.698669 6725.2633 90152682. 0.037382193 0.041411554 137.96979 38.526391 6728.1089 85082513. 0.035865602 0.039782463 138.06047 38.359142 6730.9545 80293908. 0.033696114 0.041687681 138.14979 38.191834 6733.8001 78248092. 0.032018688 0.048268553 138.23911 38.019582 6736.6458 73778957. 0.033658394 0.052796372 138.33818 37.828525 6739.4914 67771409. 0.033770398 0.063427917 138.43777 37.638435 6742.3370 62603549. 0.030082592 0.069431931 138.52710 37.472537 6745.1826 59023969. 0.024619468 0.078643661 138.61643 37.301892 6748.0282 57953612. 0.019455523 0.067165498 138.70576 37.129611 6750.8739 53903078. 0.014240882 0.073496289 138.79509 36.957330 6753.7195 52945444. 0.0079373689 0.075305668 138.88054 36.788937 6756.5651 49551288. -0.0037045404 0.075621000 138.96376 36.622771 6759.4107 49760054. -0.047047756 0.075919068 139.05309 36.450489 6762.2563 50879367. -0.0044824477 0.077637347 139.14595 36.268106 6765.1020 49470629. 0.077908697 0.079549806 139.24090 36.077347