# # 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 = 50.484425 km # Date (UTC) = 2016-01-09T10:06:55.373 # Date (julian) = 2457396.92147423 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.2046 5.3944204e+10 0.064539670 0.033551105 104.37133 34.397604 6506.4297 5.0202516e+10 0.075031213 0.034222063 104.43074 34.289958 6508.6547 4.6306180e+10 0.085711983 0.034893022 104.49622 34.167722 6510.8798 4.2524741e+10 0.096635986 0.035563980 104.56170 34.045487 6513.1048 3.8848821e+10 0.10779677 0.036234938 104.62719 33.927065 6515.3299 3.5490741e+10 0.11925960 0.036905897 104.69267 33.809196 6517.5549 3.2342126e+10 0.13098260 0.037576855 104.75815 33.688784 6519.7800 2.9500579e+10 0.14300248 0.038247813 104.82364 33.566550 6522.0050 2.6879316e+10 0.15526423 0.038918572 104.88784 33.445590 6524.2301 2.4402267e+10 0.16147880 0.039508702 104.94896 33.327721 6526.4551 2.2130424e+10 0.16675601 0.040145254 105.01010 33.209828 6528.6802 2.0004582e+10 0.17131939 0.041982085 105.07557 33.087613 6530.9052 1.8110409e+10 0.17469835 0.045096028 105.14105 32.965379 6533.1303 1.6570195e+10 0.17847474 0.047574961 105.19861 32.855554 6535.3554 1.5336430e+10 0.17947647 0.048070147 105.25293 32.750783 6537.5804 1.4319047e+10 0.18008093 0.048958860 105.30816 32.643681 6539.8055 1.3329629e+10 0.17994117 0.050618609 105.36928 32.521447 6542.0305 1.2311489e+10 0.17742209 0.051013819 105.43040 32.399214 6544.2556 1.1301119e+10 0.17457076 0.051851660 105.49152 32.280644 6546.4806 1.0381188e+10 0.17164587 0.052859989 105.55265 32.162757 6548.7057 9.5632561e+09 0.16893386 0.053878380 105.61377 32.044880 6550.9307 8.8309642e+09 0.16658038 0.055218402 105.67488 31.927012 6553.1558 8.1735093e+09 0.16473693 0.055256768 105.73600 31.808000 6555.3808 7.5572928e+09 0.16227655 0.054533390 105.79712 31.685765 6557.6059 6.9938508e+09 0.15979857 0.053486349 105.85824 31.563530 6559.8309 6.4660811e+09 0.15705358 0.052293394 105.91935 31.445536 6562.0560 5.9908367e+09 0.15400508 0.050826648 105.98047 31.327668 6564.2810 5.5970572e+09 0.15078072 0.048644240 106.03432 31.218712 6566.5061 5.2716700e+09 0.14825639 0.046896602 106.08477 31.113941 6568.7311 4.9894180e+09 0.14586398 0.045099588 106.13632 31.007365 6570.9562 4.7087312e+09 0.14379965 0.044521430 106.19743 30.885130 6573.1812 4.4243644e+09 0.14152875 0.043512054 106.25855 30.762896 6575.4063 4.1522482e+09 0.13880970 0.041967086 106.31612 30.644209 6577.6313 3.8959907e+09 0.13583675 0.039228711 106.37287 30.526340 6579.8564 3.6581794e+09 0.13269761 0.036599708 106.42963 30.408471 6582.0814 3.4352407e+09 0.12969272 0.035271636 106.48638 30.290603 6584.3065 3.2276783e+09 0.12669008 0.034348559 106.54313 30.172731 6586.5315 3.0225292e+09 0.12383969 0.033164425 106.59989 30.054844 6588.7566 2.8282790e+09 0.12110768 0.033127267 106.65665 29.936957 6590.9816 2.6609344e+09 0.11752278 0.029236071 106.70747 29.827761 6593.2067 2.5252926e+09 0.11436404 0.026910065 106.75791 29.719110 6595.4317 2.4171265e+09 0.11098479 0.025668344 106.81065 29.607104 6597.6568 2.3018488e+09 0.10840926 0.025515470 106.86740 29.489235 6599.8818 2.1803483e+09 0.10751663 0.024982768 106.92415 29.371366 6602.1069 2.0568073e+09 0.10717026 0.027425416 106.98091 29.253498 6604.3319 1.9402922e+09 0.10599824 0.026268373 107.03766 29.135630 6606.5570 1.8345612e+09 0.10545498 0.026503062 107.09441 29.017762 6608.7820 1.7300627e+09 0.10276339 0.023711694 107.15116 28.899893 6611.0071 1.6339940e+09 0.099844203 0.024953930 107.20577 28.782024 6613.2321 1.5329985e+09 0.099067927 0.023658766 107.25816 28.664155 6615.4572 1.4493117e+09 0.097814733 0.023265598 107.31015 28.548918 6617.6823 1.3829291e+09 0.096891965 0.023665447 107.36060 28.444133 6619.9073 1.3241280e+09 0.096226533 0.024744831 107.41105 28.339349 6622.1324 1.2735028e+09 0.094885113 0.024722764 107.46271 28.226394 6624.3574 1.2111699e+09 0.093088904 0.025053627 107.51510 28.108526 6626.5825 1.1459048e+09 0.091488301 0.025848800 107.56895 27.990657 6628.8075 1.0890618e+09 0.090062751 0.026030951 107.62570 27.872788 6631.0326 1.0353949e+09 0.088257615 0.025934073 107.68226 27.754919 6633.2576 9.8530814e+08 0.086797703 0.026197229 107.73465 27.637050 6635.4827 9.3921297e+08 0.085108302 0.026472170 107.78703 27.519182 6637.7077 8.9279853e+08 0.083704351 0.025814795 107.83942 27.401312 6639.9328 8.4727450e+08 0.083258531 0.025294683 107.89180 27.283443 6642.1578 7.9923477e+08 0.083250618 0.025158154 107.94419 27.165574 6644.3829 7.5626012e+08 0.082240230 0.025384986 107.99658 27.047706 6646.6079 7.0906741e+08 0.081404877 0.026234826 108.04896 26.929838 6648.8330 6.6925744e+08 0.080544059 0.027521877 108.10135 26.811969 6651.0580 6.3285414e+08 0.080471052 0.026528631 108.15374 26.694100 6653.2831 5.9646868e+08 0.080374321 0.027670188 108.20612 26.576231 6655.5081 5.6672156e+08 0.079148944 0.027820174 108.25851 26.458362 6657.7332 5.3884239e+08 0.077744177 0.029751572 108.31089 26.340494 6659.9582 5.0895190e+08 0.076588749 0.031634711 108.36328 26.222625 6662.1833 4.8005973e+08 0.075355146 0.032941441 108.41277 26.109828 6664.4083 4.5686524e+08 0.074467999 0.030712027 108.45546 26.008924 6666.6334 4.3501511e+08 0.074530734 0.027032017 108.49815 25.908020 6668.8584 4.1872936e+08 0.073449555 0.028230426 108.54784 25.794863 6671.0835 4.0159935e+08 0.073595479 0.026866538 108.60022 25.676995 6673.3085 3.8418378e+08 0.073201526 0.027920654 108.65261 25.559127 6675.5336 3.6870941e+08 0.071327202 0.030820371 108.70500 25.441258 6677.7586 3.5695212e+08 0.069844875 0.031279735 108.75677 25.323389 6679.9837 3.4157801e+08 0.070002183 0.029454895 108.80479 25.205520 6682.2087 3.2616607e+08 0.070760407 0.030584028 108.85281 25.087652 6684.4338 3.1133355e+08 0.070870222 0.032676105 108.90083 24.973494 6686.6588 2.9607820e+08 0.069640968 0.034144409 108.94885 24.859990 6688.8839 2.8860617e+08 0.066614215 0.033989223 108.99931 24.744044 6691.1089 2.7774202e+08 0.065499522 0.032975559 109.05170 24.626176 6693.3340 2.6507437e+08 0.064575124 0.031489507 109.10475 24.503780 6695.5590 2.4956386e+08 0.064231360 0.029756783 109.15964 24.369069 6697.7841 2.3465312e+08 0.063633225 0.030190495 109.21270 24.239970 6700.0092 2.2253707e+08 0.062181374 0.030674506 109.26072 24.126467 6702.2342 2.1207635e+08 0.060711946 0.033063742 109.30874 24.012964 6704.4593 2.0337841e+08 0.061083018 0.036403071 109.35676 23.895209 6706.6843 1.9181156e+08 0.060926319 0.039637384 109.40479 23.777340 6708.9094 1.8103125e+08 0.060390143 0.041033836 109.45281 23.659459 6711.1344 1.7097950e+08 0.058629757 0.040845152 109.50084 23.541571 6713.3595 1.6246144e+08 0.056475292 0.044986712 109.54886 23.425407 6715.5845 1.5984085e+08 0.054411664 0.047976409 109.59689 23.311903 6717.8096 1.5672749e+08 0.052173620 0.049824193 109.64491 23.197954 6720.0346 1.5356070e+08 0.050794477 0.050415756 109.69293 23.080086 6722.2597 1.5099577e+08 0.050539734 0.050284191 109.74095 22.962218 6724.4847 1.4234629e+08 0.047285457 0.045878971 109.78897 22.847892 6726.7098 1.3806043e+08 0.044300762 0.040957769 109.83699 22.734389 6728.9348 1.2982238e+08 0.043756014 0.040953044 109.88858 22.609841 6731.1599 1.2791058e+08 0.041773996 0.042068196 109.94347 22.475131 6733.3849 1.2548463e+08 0.040438751 0.046014158 109.99255 22.351374 6735.6100 1.1811205e+08 0.041166262 0.049940964 110.03620 22.237870 6737.8350 1.1672191e+08 0.042526248 0.056795556 110.08084 22.124366 6740.0601 1.0922902e+08 0.042228510 0.064152990 110.12887 22.010863 6742.2851 1.0506386e+08 0.039551980 0.069305516 110.17689 21.897360 6744.5102 98875643. 0.035135943 0.078188022 110.22082 21.779775 6746.7352 95118092. 0.031305574 0.070439412 110.26448 21.661907 6748.9603 93030720. 0.030385515 0.072068970 110.31537 21.536400 6751.1853 89921067. 0.027093899 0.073790030 110.37025 21.406679 6753.4104 86758099. 0.024543136 0.074305366 110.41795 21.287340 6755.6354 81573470. 0.022203200 0.074326748 110.46160 21.173836 6757.8605 79922520. 0.021057395 0.074128710 110.50743 21.052921 6760.0855 73593316. 0.021544959 0.076224388 110.55733 20.918211 6762.3106 67165387. 0.025325666 0.077549839 110.60657 20.790821 6764.5356 63817743. 0.028047556 0.079508947 110.65459 20.677317 6766.7607 65072442. 0.028647312 0.081434446 110.70238 20.563813 6768.9857 68855819. 0.024108026 0.084402961 110.74604 20.450293 6771.2108 66747186. 0.019660180 0.089816409 110.78970 20.336773 6773.4358 60820727. 0.014580520 0.095213137 110.83813 20.210873 6775.6609 54542716. 0.0087452032 0.10060987 110.88802 20.081152 6777.8859 51710977. 0.0022262672 0.10600659 110.93317 19.960438 6780.1110 50458150. -0.0070299126 0.11140332 110.97683 19.842570 6782.3361 49420829. -0.041652213 0.11680005 111.02341 19.719140 6784.5611 47996732. -0.020703263 0.12219678 111.07330 19.589419 6786.7862 46659554. 0.031856333 0.12759350 111.12319 19.459698