# # 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 = 56.434975 km # Date (UTC) = 2012-01-09T09:55:38.248 # Date (julian) = 2455935.91363713 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.4245 1.0920575e+11 0.077197375 0.034220494 102.42966 41.414704 6509.2026 8.9792715e+10 0.089350473 0.035058227 102.53322 41.267538 6511.9807 7.5179238e+10 0.10175654 0.035895961 102.63642 41.120728 6514.7588 6.4020651e+10 0.11448343 0.036733694 102.73453 40.979011 6517.5369 5.5095307e+10 0.12754094 0.037571428 102.83390 40.836036 6520.3151 4.7876814e+10 0.14098879 0.038409161 102.93746 40.688869 6523.0932 4.1924934e+10 0.15181268 0.039202206 103.03886 40.541703 6525.8713 3.7045410e+10 0.15703248 0.039682776 103.13698 40.394538 6528.6494 3.2880282e+10 0.16223042 0.041957657 103.23203 40.247372 6531.4275 2.9169784e+10 0.16591412 0.045850940 103.32469 40.100205 6534.2056 2.5987883e+10 0.16835386 0.048002082 103.42131 39.953039 6536.9838 2.3078510e+10 0.16945963 0.048670689 103.51942 39.805872 6539.7619 2.0415114e+10 0.17023035 0.050565849 103.62448 39.645502 6542.5400 1.8115197e+10 0.16941699 0.051207246 103.72502 39.492468 6545.3181 1.6209228e+10 0.16903364 0.052458417 103.81224 39.361638 6548.0962 1.4721810e+10 0.16819332 0.053696379 103.90067 39.227163 6550.8743 1.3446483e+10 0.16649350 0.055204284 103.99334 39.079999 6553.6524 1.2194029e+10 0.16390625 0.055007091 104.08600 38.932833 6556.4306 1.1007329e+10 0.16016270 0.053949825 104.17866 38.785666 6559.2087 9.9744415e+09 0.15596542 0.052363628 104.27132 38.641517 6561.9868 9.0798179e+09 0.15213369 0.050886411 104.36398 38.499800 6564.7649 8.2999656e+09 0.14884651 0.048424940 104.45272 38.354164 6567.5430 7.6172530e+09 0.14630325 0.046158046 104.53993 38.206997 6570.3211 6.9989437e+09 0.14434671 0.044784482 104.63196 38.059830 6573.0993 6.4430026e+09 0.14212405 0.043577831 104.72435 37.912664 6575.8774 5.9376932e+09 0.13939675 0.041494428 104.81156 37.765499 6578.6555 5.4809610e+09 0.13647337 0.037614523 104.89876 37.619506 6581.4336 5.0584569e+09 0.13381797 0.035465308 104.98598 37.477789 6584.2117 4.6729666e+09 0.13145157 0.034400180 105.07319 37.333998 6586.9898 4.3333710e+09 0.12926670 0.033158501 105.16039 37.186831 6589.7680 4.0273965e+09 0.12685796 0.031522433 105.24761 37.039652 6592.5461 3.7590535e+09 0.12369762 0.027543129 105.33484 36.892464 6595.3242 3.5123286e+09 0.12037205 0.025657190 105.41817 36.749170 6598.1023 3.2850250e+09 0.11727134 0.025358325 105.49993 36.607455 6600.8804 3.0727830e+09 0.11614645 0.026799842 105.58647 36.460959 6603.6585 2.8811633e+09 0.11419202 0.026273426 105.67345 36.314022 6606.4366 2.7048419e+09 0.11277168 0.026719326 105.75521 36.172307 6609.2148 2.5429554e+09 0.10856654 0.023769725 105.83697 36.029461 6611.9929 2.3944173e+09 0.10472423 0.024325294 105.91873 35.882294 6614.7710 2.2505664e+09 0.10263824 0.023409309 106.00049 35.735127 6617.5491 2.1149747e+09 0.10041244 0.023621304 106.08225 35.587961 6620.3272 1.9828666e+09 0.099163580 0.024872645 106.16400 35.443727 6623.1053 1.8531502e+09 0.097411610 0.024530853 106.24576 35.302010 6625.8835 1.7268978e+09 0.096075725 0.026451831 106.32752 35.156460 6628.6616 1.6079857e+09 0.094499024 0.025971699 106.40928 35.009295 6631.4397 1.4940221e+09 0.092932661 0.025975429 106.49104 34.866864 6634.2178 1.3905992e+09 0.091561730 0.026342730 106.57261 34.724960 6636.9959 1.3006438e+09 0.090139353 0.026162997 106.64893 34.577771 6639.7740 1.2187804e+09 0.089833393 0.025351418 106.72634 34.431676 6642.5521 1.1387511e+09 0.090141252 0.025174291 106.80810 34.289961 6645.3303 1.0588083e+09 0.089106649 0.025606401 106.88787 34.146254 6648.1084 9.8928904e+08 0.087866170 0.027036835 106.96418 33.999088 6650.8865 9.2836860e+08 0.087004182 0.026458181 107.04049 33.854812 6653.6646 8.7331270e+08 0.086310005 0.027864989 107.11679 33.713095 6656.4427 8.1985291e+08 0.084116912 0.028411997 107.19310 33.567588 6659.2208 7.6867189e+08 0.082091469 0.031788530 107.26941 33.420423 6661.9990 7.2538469e+08 0.080238610 0.033043741 107.34572 33.277949 6664.7771 6.8436666e+08 0.078995579 0.029362803 107.42203 33.136087 6667.5552 6.4131685e+08 0.078314045 0.027307389 107.49834 32.988920 6670.3333 5.9996063e+08 0.077402922 0.027174217 107.57360 32.842800 6673.1114 5.6194671e+08 0.076769482 0.027625858 107.64446 32.701085 6675.8895 5.3227554e+08 0.073982730 0.031502149 107.71727 32.559362 6678.6677 5.0827353e+08 0.072336257 0.030490059 107.79359 32.417624 6681.4458 4.8756810e+08 0.073188052 0.029999346 107.86705 32.273048 6684.2239 4.6910755e+08 0.073540506 0.032665453 107.93791 32.125884 6687.0020 4.4691552e+08 0.072099254 0.034341784 108.01252 31.982468 6689.7801 4.2541797e+08 0.069435571 0.033313794 108.08883 31.840750 6692.5582 4.0574208e+08 0.068422403 0.032117087 108.16048 31.699034 6695.3363 3.8778582e+08 0.067874997 0.029797691 108.23134 31.557215 6698.1145 3.7233604e+08 0.067066368 0.030374932 108.30220 31.410049 6700.8926 3.5730624e+08 0.064883242 0.031329769 108.37306 31.263888 6703.6707 3.4389512e+08 0.064594645 0.035353528 108.44391 31.122172 6706.4488 3.3061454e+08 0.064571022 0.039227525 108.51831 30.973377 6709.2269 3.1506732e+08 0.063846760 0.040988207 108.59930 30.811413 6712.0050 2.9736833e+08 0.061457076 0.041839321 108.67274 30.664519 6714.7832 2.8238140e+08 0.059003362 0.047362286 108.74360 30.522802 6717.5613 2.7094899e+08 0.056439569 0.049839551 108.80950 30.376128 6720.3394 2.5833351e+08 0.055044138 0.050380442 108.87532 30.229370 6723.1175 2.4660663e+08 0.054114792 0.049434479 108.94617 30.087654 6725.8956 2.3316824e+08 0.049386456 0.041016568 109.01703 29.945933 6728.6737 2.2345297e+08 0.048358406 0.040583005 109.08790 29.804196 6731.4519 2.1347079e+08 0.046095129 0.042649295 109.16034 29.654258 6734.2300 1.9920342e+08 0.044801643 0.049339763 109.23508 29.492320 6737.0081 1.8534194e+08 0.046859369 0.054161316 109.30236 29.346552 6739.7862 1.6770912e+08 0.047214838 0.063788710 109.36778 29.204816 6742.5643 1.5879400e+08 0.043835751 0.069985812 109.43319 29.063100 6745.3424 1.4998675e+08 0.039621491 0.078710842 109.49982 28.918724 6748.1205 1.4250749e+08 0.035315798 0.067651100 109.57457 28.756759 6750.8987 1.4020169e+08 0.032392645 0.073538633 109.64728 28.602580 6753.6768 1.3297653e+08 0.029141316 0.075167467 109.71813 28.455413 6756.4549 1.2989336e+08 0.025961703 0.075337418 109.78145 28.312015 6759.2330 1.2450518e+08 0.026284538 0.075876183 109.84141 28.170298 6762.0111 1.1722613e+08 0.030004042 0.078032898 109.91405 28.011233 6764.7892 1.1249815e+08 0.033565810 0.079521096 109.98645 27.854361 6767.5674 1.0668133e+08 0.032405349 0.081340473 110.05185 27.712645 6770.3455 99212953. 0.026421974 0.087717623 110.12116 27.562490 6773.1236 93418542. 0.021252811 0.094455775 110.19591 27.400526 6775.9017 88249741. 0.016088864 0.10119393 110.25866 27.259418 6778.6798 87348388. 0.011038455 0.10793208 110.31861 27.123153 6781.4579 87110563. 0.0060288111 0.11467023 110.39303 26.961782 6784.2361 82187330. 0.00088608383 0.12140838 110.46228 26.807341 6787.0142 78963794. -0.0042036904 0.12814654 110.52224 26.665625 6789.7923 73260083. -0.0094048918 0.13488469 110.59014 26.513037 6792.5704 71759434. -0.014418324 0.14162284 110.66489 26.351072 6795.3485 69606451. -0.019460420 0.14836099 110.73384 26.189108 6798.1266 64213460. -0.024716688 0.15509914 110.79957 26.033751 6800.9047 62449441. -0.029764235 0.16183730 110.85952 25.892036 6803.6829 58538625. -0.034991617 0.16857545 110.92369 25.740363 6806.4610 56140155. -0.040127146 0.17531360 110.99222 25.578398 6809.2391 55657652. -0.045122083 0.18205175 111.06074 25.421955 6812.0172 52532902. -0.050469871 0.18878990 111.12926 25.264469 6814.7953 48965412. -0.056061334 0.19552806 111.19779 25.102504 6817.5734 45622204. -0.061932096 0.20226621 111.26052 24.954225 6820.3516 42559665. -0.068241531 0.20900436 111.32048 24.812510 6823.1297 42907527. -0.074459748 0.21574251 111.38764 24.653762 6825.9078 43996093. -0.081497903 0.22248066 111.45617 24.493267 6828.6859 44735205. -0.091588231 0.22921882 111.52469 24.337531 6831.4640 45938405. -0.12676690 0.23595697 111.58928 24.177867 6834.2421 47597314. -0.10469458 0.24269512 111.65174 24.015903 6837.0202 46142388. -0.056066494 0.24943327 111.72026 23.853938