# # 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 = 61.169482 km # Date (UTC) = 2014-12-13T09:47:57.016 # Date (julian) = 2457004.90829880 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.1140 5.1355972e+10 0.039172267 0.032016030 109.22795 27.647333 6501.5256 4.7619841e+10 0.048077961 0.032743241 109.28360 27.532804 6503.9372 4.4447623e+10 0.057361654 0.033470451 109.34249 27.415028 6506.3488 4.1480485e+10 0.067045046 0.034197662 109.40138 27.297253 6508.7604 3.8812638e+10 0.077238844 0.034924872 109.45667 27.183080 6511.1720 3.6139977e+10 0.087882447 0.035652083 109.51134 27.069526 6513.5836 3.3536232e+10 0.099003658 0.036379293 109.56601 26.955972 6515.9951 3.1103621e+10 0.11067788 0.037106504 109.62069 26.842417 6518.4067 2.8763802e+10 0.12288197 0.037833714 109.67495 26.728450 6520.8183 2.6654121e+10 0.13569282 0.038560925 109.72542 26.610690 6523.2299 2.4671418e+10 0.14557430 0.039236102 109.77589 26.492929 6525.6415 2.2812670e+10 0.15189375 0.039708998 109.82939 26.378189 6528.0531 2.1110690e+10 0.15808629 0.041484632 109.88407 26.264620 6530.4647 1.9534587e+10 0.16304779 0.044479305 109.93875 26.151056 6532.8763 1.8055562e+10 0.16760465 0.047416267 109.99343 26.037501 6535.2879 1.6687216e+10 0.16996782 0.048099398 110.04810 25.923947 6537.6995 1.5424183e+10 0.17183187 0.049015016 110.09872 25.810392 6540.1111 1.4257189e+10 0.17323872 0.050906594 110.14918 25.696837 6542.5227 1.3183458e+10 0.17202549 0.051200687 110.20212 25.580812 6544.9343 1.2179213e+10 0.17097194 0.052402274 110.25680 25.463053 6547.3459 1.1250852e+10 0.16878215 0.053418904 110.31059 25.346173 6549.7575 1.0425088e+10 0.16674150 0.054738230 110.36107 25.232603 6552.1691 9.6531814e+09 0.16477635 0.055544206 110.41154 25.119034 6554.5807 8.8794073e+09 0.16245373 0.054844566 110.47120 24.993659 6556.9923 8.1388666e+09 0.16035142 0.053867241 110.53271 24.865908 6559.4039 7.4464905e+09 0.15768225 0.052341594 110.58628 24.748363 6561.8155 6.8639044e+09 0.15514347 0.050970831 110.63675 24.634809 6564.2271 6.3965801e+09 0.15235817 0.048668686 110.68722 24.521255 6566.6387 5.9766594e+09 0.15048176 0.046821589 110.73769 24.407701 6569.0503 5.5985606e+09 0.14864500 0.044855696 110.78816 24.294147 6571.4619 5.2585351e+09 0.14740799 0.044377131 110.83863 24.180578 6573.8735 4.9301670e+09 0.14530841 0.042956549 110.88911 24.067009 6576.2851 4.6295017e+09 0.14324083 0.041043286 110.93958 23.953448 6578.6967 4.3450705e+09 0.14061937 0.037549515 110.99005 23.839893 6581.1083 4.0753082e+09 0.13814364 0.035563829 111.04052 23.726339 6583.5198 3.8398677e+09 0.13606237 0.034758543 111.09098 23.612784 6585.9314 3.6167204e+09 0.13359621 0.033226105 111.14145 23.499230 6588.3430 3.4152296e+09 0.13158097 0.033265371 111.18843 23.389169 6590.7546 3.2336991e+09 0.12852007 0.029658324 111.23469 23.279820 6593.1662 3.0731377e+09 0.12547167 0.026947674 111.28286 23.168560 6595.5778 2.9275029e+09 0.12194918 0.025683494 111.33334 23.054991 6597.9894 2.7881899e+09 0.11926867 0.025410502 111.38381 22.941423 6600.4010 2.6498018e+09 0.11851036 0.025814303 111.43428 22.827869 6602.8126 2.5151657e+09 0.11797306 0.026823177 111.48475 22.714314 6605.2242 2.3928142e+09 0.11748559 0.026853142 111.53228 22.600760 6607.6358 2.2749835e+09 0.11603177 0.024451506 111.57855 22.487205 6610.0474 2.1664291e+09 0.11313888 0.024048276 111.62616 22.373651 6612.4590 2.0723755e+09 0.11112844 0.023977801 111.67663 22.260096 6614.8706 1.9788914e+09 0.11019762 0.023340682 111.72710 22.146541 6617.2822 1.8857337e+09 0.10902083 0.023532811 111.77905 22.024068 6619.6938 1.7855150e+09 0.10859627 0.024693315 111.83109 21.901048 6622.1054 1.6812082e+09 0.10760542 0.024729941 111.88184 21.785862 6624.5170 1.5942724e+09 0.10592827 0.025139050 111.93231 21.672293 6626.9286 1.5112171e+09 0.10402260 0.025407802 111.98089 21.558731 6629.3402 1.4417991e+09 0.10279439 0.026047599 112.02715 21.445177 6631.7518 1.3793382e+09 0.10085505 0.026007131 112.07341 21.331933 6634.1634 1.3183832e+09 0.099127805 0.026338760 112.11968 21.222584 6636.5750 1.2604780e+09 0.097380816 0.026326469 112.16594 21.113235 6638.9866 1.2043916e+09 0.095928529 0.025628660 112.21220 21.000959 6641.3982 1.1558694e+09 0.096285774 0.025149652 112.25847 20.887404 6643.8098 1.1053321e+09 0.095066990 0.025314882 112.30657 20.770830 6646.2214 1.0573794e+09 0.093545516 0.026034728 112.35863 20.647793 6648.6330 1.0016738e+09 0.092050838 0.027387984 112.40949 20.526701 6651.0445 9.4962229e+08 0.091374486 0.026518305 112.45576 20.413147 6653.4561 9.0725965e+08 0.090864326 0.027758552 112.50202 20.299594 6655.8677 8.6611647e+08 0.089258158 0.027968768 112.54828 20.189520 6658.2793 8.3297988e+08 0.087716668 0.030556489 112.59455 20.080171 6660.6909 8.0260109e+08 0.086204097 0.032254023 112.64081 19.968931 6663.1025 7.7289060e+08 0.084888160 0.032454799 112.68707 19.855376 6665.5141 7.4774489e+08 0.084329339 0.027704716 112.73375 19.741139 6667.9257 7.1695568e+08 0.083681885 0.027443492 112.78580 19.618120 6670.3373 6.8431644e+08 0.083111895 0.027172358 112.83784 19.495101 6672.7489 6.5425268e+08 0.082767544 0.027313684 112.88435 19.381139 6675.1605 6.2514266e+08 0.081073880 0.030105796 112.93062 19.267570 6677.5721 5.9931995e+08 0.079078131 0.031544906 112.97749 19.148509 6679.9837 5.7302490e+08 0.079123329 0.029454882 113.02481 19.025490 6682.3953 5.4747310e+08 0.079836290 0.030726568 113.07164 18.908864 6684.8069 5.2428501e+08 0.079759003 0.032695038 113.11790 18.799516 6687.2185 5.0407537e+08 0.077760523 0.034221044 113.16379 18.689790 6689.6301 4.8797288e+08 0.074944169 0.033448842 113.20584 18.576235 6692.0417 4.6971859e+08 0.073637047 0.032716920 113.24790 18.462680 6694.4533 4.4869077e+08 0.072637906 0.030625726 113.29707 18.342385 6696.8649 4.2944562e+08 0.072064569 0.030035126 113.34912 18.219366 6699.2765 4.0889834e+08 0.070469602 0.031335324 113.39519 18.104522 6701.6881 3.9542290e+08 0.068305297 0.032419044 113.43725 17.995159 6704.0997 3.8278144e+08 0.068302388 0.036226496 113.48152 17.882774 6706.5113 3.6834009e+08 0.068124817 0.039336222 113.53357 17.759755 6708.9229 3.5063199e+08 0.067580402 0.041048543 113.58454 17.638210 6711.3345 3.3493648e+08 0.065701815 0.041072755 113.62659 17.528860 6713.7461 3.2593882e+08 0.063307441 0.046384944 113.66865 17.419511 6716.1577 3.1989996e+08 0.061239983 0.048633566 113.71455 17.300181 6718.5692 3.1364778e+08 0.058655522 0.050698974 113.76186 17.177162 6720.9808 2.9740240e+08 0.058637914 0.050306118 113.80917 17.054144 6723.3924 2.7886126e+08 0.057320226 0.049587815 113.85649 16.931125 6725.8040 2.6190887e+08 0.053089540 0.041073776 113.90328 16.814977 6728.2156 2.4790440e+08 0.052245767 0.039933723 113.94955 16.705614 6730.6272 2.3724917e+08 0.050576551 0.041238911 113.99595 16.594534 6733.0388 2.3231851e+08 0.049071707 0.044135105 114.04326 16.471514 6735.4504 2.2758356e+08 0.049454597 0.049771589 114.09058 16.348494 6737.8620 2.2024277e+08 0.050987741 0.056881549 114.13789 16.225475 6740.2736 2.0811875e+08 0.050662834 0.064517787 114.18521 16.102456 6742.6852 1.9492779e+08 0.047423855 0.070280400 114.22780 15.991723 6745.0968 1.9009277e+08 0.043465125 0.078607584 114.26986 15.882375 6747.5084 1.8765219e+08 0.038841720 0.067186137 114.31465 15.765903 6749.9200 1.8489438e+08 0.036386929 0.072026036 114.36197 15.642884 6752.3316 1.7878634e+08 0.033258014 0.073750756 114.40928 15.519865 6754.7432 1.7104627e+08 0.031548782 0.075018322 114.45660 15.396846 6757.1548 1.6228921e+08 0.028731058 0.076270308 114.50252 15.273827 6759.5664 1.5658084e+08 0.029750258 0.075956633 114.54511 15.150807 6761.9780 1.5083836e+08 0.033375057 0.078049025 114.58854 15.027788 6764.3896 1.4596283e+08 0.036736806 0.079501949 114.63586 14.904768 6766.8012 1.4069234e+08 0.037398870 0.081526023 114.68317 14.781748 6769.2128 1.3246474e+08 0.032334465 0.084970328 114.73050 14.658710 6771.6244 1.2545987e+08 0.027986580 0.090819510 114.77782 14.535673 6774.0360 1.2085302e+08 0.023630769 0.096668691 114.82513 14.417166 6776.4476 1.1849329e+08 0.019271650 0.10251787 114.87245 14.298879 6778.8592 1.1668849e+08 0.014917311 0.10836705 114.91579 14.176614 6781.2708 1.1326822e+08 0.010577974 0.11421624 114.95837 14.053595 6783.6824 1.0686048e+08 0.0062551159 0.12006542 115.00439 13.930576 6786.0939 1.0166604e+08 0.0019371837 0.12591460 115.05171 13.807557 6788.5055 99811552. -0.0023797615 0.13176378 115.09902 13.687440 6790.9171 97566570. -0.0066830555 0.13761296 115.14634 13.569152 6793.3287 93673402. -0.010976185 0.14346214 115.19129 13.448499 6795.7403 89832512. -0.015265046 0.14931133 115.23387 13.325480 6798.1519 85890169. -0.019546777 0.15516051 115.27829 13.202461 6800.5635 85332470. -0.023813508 0.16100969 115.32560 13.079442 6802.9751 81576705. -0.028080152 0.16685887 115.37162 12.957714 6805.3867 78953311. -0.032345646 0.17270805 115.41421 12.839426 6807.7983 74974199. -0.036605860 0.17855723 115.45862 12.717580 6810.2099 71070797. -0.040850422 0.18440642 115.51270 12.576984 6812.6215 69130578. -0.045066791 0.19025560 115.56321 12.443307 6815.0331 63898636. -0.049288704 0.19610478 115.60579 12.325020 6817.4447 60195198. -0.053497725 0.20195396 115.64838 12.205798 6819.8563 59835752. -0.057709219 0.20780314 115.69097 12.082761 6822.2679 56093998. -0.061967389 0.21365232 115.73452 11.958709 6824.6795 55276843. -0.066239787 0.21950151 115.78859 11.823520 6827.0911 54918906. -0.070563253 0.22535069 115.83998 11.692290 6829.5027 52693562. -0.074992753 0.23119987 115.88256 11.574002 6831.9143 52962422. -0.079417928 0.23704905 115.92588 11.453020 6834.3259 48728734. -0.084299425 0.24289823 115.97455 11.312423 6836.7375 43911187. -0.090658702 0.24874741 116.02156 11.177884 6839.1491 41609861. -0.10335116 0.25459660 116.06415 11.059596 6843.9723 42421519. -0.10043543 0.26629496 116.16262 10.803449 6846.3839 44648963. -0.092922440 0.27214414 116.21502 10.666591