# # 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 = 42.989685 km # Date (UTC) = 2010-12-17T09:24:01.159 # Date (julian) = 2455547.89168008 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.9929 1.2760828e+11 0.067139234 0.033487257 110.31744 35.837593 6506.3377 1.0871619e+11 0.077705614 0.034194336 110.38538 35.727176 6508.6826 9.1859371e+10 0.088386273 0.034901415 110.45081 35.616750 6511.0274 7.8969903e+10 0.099420901 0.035608494 110.51625 35.506325 6513.3722 6.7862640e+10 0.11069215 0.036315574 110.58939 35.382900 6515.7171 5.8254863e+10 0.12220588 0.037022653 110.66300 35.258686 6518.0619 5.0173804e+10 0.13402007 0.037729732 110.73032 35.148233 6520.4068 4.3950863e+10 0.14631623 0.038436811 110.79574 35.041912 6522.7516 3.9075549e+10 0.15701271 0.039114063 110.86117 34.934267 6525.0964 3.5047673e+10 0.16405698 0.039771210 110.92660 34.823856 6527.4413 3.1527250e+10 0.16914327 0.041036830 110.99203 34.713446 6529.7861 2.8371284e+10 0.17370770 0.043487966 111.05746 34.603034 6532.1309 2.5548115e+10 0.17739502 0.046793571 111.12289 34.492623 6534.4758 2.3065040e+10 0.17906162 0.048077648 111.18655 34.383976 6536.8206 2.0987870e+10 0.17967446 0.048524717 111.24790 34.277639 6539.1654 1.9127280e+10 0.17952251 0.049843890 111.30925 34.171279 6541.5103 1.7352091e+10 0.17806688 0.051161050 111.37816 34.047309 6543.8551 1.5657884e+10 0.17504244 0.051606322 111.44717 33.923097 6546.1999 1.4110929e+10 0.17146941 0.052629053 111.51326 33.813448 6548.5448 1.2800707e+10 0.16827803 0.053830338 111.57869 33.707126 6550.8896 1.1689961e+10 0.16508982 0.055208113 111.64261 33.599296 6553.2345 1.0689396e+10 0.16282136 0.055217208 111.70395 33.488885 6555.5793 9.7742913e+09 0.15993868 0.054366619 111.76529 33.378474 6557.9241 8.9761466e+09 0.15724568 0.053286859 111.82664 33.268049 6560.2690 8.2890823e+09 0.15398217 0.052031801 111.88798 33.157624 6562.6138 7.6997011e+09 0.15055544 0.050295847 111.94933 33.049161 6564.9586 7.1941534e+09 0.14746282 0.048337142 112.01067 32.942840 6567.3035 6.7107336e+09 0.14458994 0.046360591 112.07211 32.835933 6569.6483 6.1873124e+09 0.14224379 0.044894620 112.13652 32.711719 6571.9931 5.6650428e+09 0.14009153 0.044232027 112.20092 32.587505 6574.3380 5.1790188e+09 0.13719770 0.042692672 112.26269 32.478662 6576.6828 4.7733766e+09 0.13438819 0.040585452 112.32403 32.372341 6579.0277 4.4501141e+09 0.13073483 0.037055294 112.38537 32.264328 6581.3725 4.1640123e+09 0.12762820 0.035483813 112.44671 32.153917 6583.7173 3.9062280e+09 0.12454931 0.034658586 112.50805 32.043506 6586.0622 3.6726250e+09 0.12125173 0.033170493 112.56544 31.937041 6588.4070 3.4479437e+09 0.11842928 0.033244011 112.62270 31.830705 6590.7518 3.2130658e+09 0.11474335 0.029663530 112.68370 31.717423 6593.0967 2.9658090e+09 0.11133134 0.027012343 112.74810 31.597809 6595.4415 2.7282027e+09 0.10741953 0.025669357 112.81001 31.481412 6597.7863 2.5126793e+09 0.10405418 0.025474586 112.86726 31.371001 6600.1312 2.3284685e+09 0.10252177 0.025259563 112.92451 31.260590 6602.4760 2.1774707e+09 0.10152304 0.027110417 112.98176 31.153876 6604.8209 2.0368491e+09 0.10065763 0.026558673 113.03901 31.047554 6607.1657 1.9147134e+09 0.099566337 0.025379816 113.09626 30.941227 6609.5105 1.8078512e+09 0.096528846 0.023857582 113.15352 30.834891 6611.8554 1.7027774e+09 0.094037577 0.024412986 113.21087 30.728312 6614.2002 1.5928836e+09 0.093207177 0.023802562 113.27528 30.604098 6616.5450 1.4787437e+09 0.091968130 0.023367842 113.33969 30.479883 6618.8899 1.3699570e+09 0.091512246 0.024442756 113.39808 30.370698 6621.2347 1.2806857e+09 0.090835382 0.025011651 113.45533 30.264377 6623.5795 1.2029830e+09 0.089201755 0.024706538 113.51097 30.158056 6625.9244 1.1317327e+09 0.088007540 0.026500669 113.56413 30.051735 6628.2692 1.0655417e+09 0.086273527 0.025812400 113.61730 29.945413 6630.6141 1.0033281e+09 0.084667072 0.025929815 113.67434 29.835210 6632.9589 9.5415888e+08 0.083123699 0.026147324 113.73159 29.724799 6635.3037 8.9955955e+08 0.081504293 0.026445336 113.79013 29.609744 6637.6486 8.4093771e+08 0.080155367 0.025843765 113.84994 29.490113 6639.9934 7.8409997e+08 0.079939957 0.025273011 113.90756 29.374878 6642.3382 7.3506752e+08 0.079905679 0.025165537 113.96072 29.268556 6644.6831 6.9338823e+08 0.078778373 0.025417431 114.01388 29.162234 6647.0279 6.5517625e+08 0.077450960 0.026452474 114.07292 29.044149 6649.3727 6.1308616e+08 0.076316094 0.027119878 114.13273 28.924536 6651.7176 5.7137625e+08 0.075994499 0.027034087 114.18781 28.814376 6654.0624 5.3916161e+08 0.075508820 0.028009635 114.24097 28.708055 6656.4073 5.0782796e+08 0.073965415 0.028380861 114.29413 28.600646 6658.7521 4.8288166e+08 0.072665944 0.031394924 114.34729 28.490236 6661.0969 4.5878159e+08 0.071550009 0.032584316 114.40046 28.379826 6663.4418 4.3301873e+08 0.070540197 0.032360790 114.45908 28.261850 6665.7866 4.0706787e+08 0.070593095 0.027258262 114.51889 28.142218 6668.1314 3.8280444e+08 0.070123376 0.027587085 114.57440 28.031199 6670.4763 3.6162852e+08 0.069905007 0.027107984 114.62756 27.924878 6672.8211 3.4317620e+08 0.069779413 0.027355527 114.68206 27.815875 6675.1659 3.2600655e+08 0.068290307 0.030116198 114.74187 27.696262 6677.5108 3.0556094e+08 0.066575336 0.031632092 114.80138 27.577020 6679.8556 2.8836666e+08 0.066736635 0.029560729 114.85045 27.470699 6682.2005 2.7219304e+08 0.067665903 0.030577695 114.89952 27.364377 6684.5453 2.5940027e+08 0.067802023 0.032681763 114.95484 27.250311 6686.8901 2.4665721e+08 0.066322207 0.034278972 115.01465 27.130697 6689.2350 2.3172780e+08 0.063469135 0.033804522 115.07007 27.016513 6691.5798 2.1742707e+08 0.062440180 0.032864469 115.11915 26.910178 6693.9246 2.0376475e+08 0.061322305 0.031286882 115.16822 26.803842 6696.2695 1.9147306e+08 0.061033238 0.029787744 115.22321 26.684709 6698.6143 1.8306407e+08 0.059714228 0.031061022 115.27842 26.565096 6700.9591 1.7798808e+08 0.057533605 0.031379140 115.33201 26.455986 6703.3040 1.7163191e+08 0.057062818 0.034435884 115.38517 26.349665 6705.6488 1.6357820e+08 0.056992232 0.037822066 115.43903 26.240347 6707.9937 1.5356302e+08 0.056543688 0.040044487 115.49424 26.125334 6710.3385 1.4345081e+08 0.055026458 0.040562749 115.54945 26.009533 6712.6833 1.3554525e+08 0.052666180 0.043098661 115.60466 25.889919 6715.0282 1.2853376e+08 0.050366419 0.047407389 115.65984 25.770355 6717.3730 1.2013283e+08 0.047936551 0.049851197 115.70895 25.663949 6719.7178 1.1665827e+08 0.046055811 0.050687847 115.75802 25.557628 6722.0627 1.1331223e+08 0.045999730 0.050527730 115.81048 25.443959 6724.4075 1.1000124e+08 0.042773178 0.046523743 115.86570 25.324327 6726.7523 1.0406249e+08 0.039435277 0.040958153 115.91917 25.204702 6729.0972 95755276. 0.038594456 0.040980657 115.96977 25.085089 6731.4420 90569682. 0.036357544 0.042629711 116.02132 24.966418 6733.7868 84402045. 0.034740161 0.048196339 116.07653 24.851404 6736.1317 79645000. 0.036010130 0.050852849 116.13154 24.736663 6738.4765 76396239. 0.036907919 0.059944560 116.18061 24.630342 6740.8214 70363182. 0.035451769 0.065453510 116.22968 24.524021 6743.1662 70425680. 0.031443964 0.072168579 116.27965 24.409910 6745.5110 67042363. 0.027924379 0.078781719 116.33026 24.290297 6747.8559 62124147. 0.022484931 0.067066519 116.38276 24.170683 6750.2007 58842164. 0.018238371 0.072346839 116.43797 24.051069 6752.5455 53281235. 0.012012050 0.073503186 116.49208 23.932553 6754.8904 54093569. 0.0051619732 0.074781637 116.54268 23.817540 6757.2352 54464526. -0.030783919 0.076026253 116.59328 23.702227 6759.5800 54093300. -0.00017139905 0.075959930 116.64389 23.582614 6761.9249 50683864. 0.066318295 0.078044638 116.69450 23.463002