# # 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 = 49.322452 km # Date (UTC) = 2015-12-23T09:53:24.425 # Date (julian) = 2457379.91208825 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.0559 6.1179774e+10 0.032790235 0.031696960 108.34444 28.387152 6500.1383 5.6840668e+10 0.040988442 0.032324918 108.39528 28.289097 6502.2208 5.2717696e+10 0.049484465 0.032952875 108.44613 28.191029 6504.3032 4.8949789e+10 0.058368493 0.033580833 108.49698 28.092960 6506.3857 4.5648350e+10 0.067732972 0.034208790 108.54727 27.994893 6508.4681 4.2551188e+10 0.077553208 0.034836747 108.59449 27.896837 6510.5506 3.9740866e+10 0.087886596 0.035464705 108.64170 27.798781 6512.6330 3.6999493e+10 0.098643760 0.036092662 108.68891 27.700725 6514.7155 3.4493776e+10 0.10988806 0.036720619 108.73612 27.602669 6516.7979 3.2114791e+10 0.12156212 0.037348577 108.78334 27.504612 6518.8804 2.9859640e+10 0.13363181 0.037976534 108.83055 27.404207 6520.9628 2.7762394e+10 0.14607839 0.038604491 108.87776 27.302520 6523.0453 2.5764995e+10 0.15592399 0.039190332 108.92497 27.200833 6525.1277 2.3905849e+10 0.16345071 0.039767639 108.97543 27.102379 6527.2102 2.2224445e+10 0.16934731 0.040869055 109.02628 27.004310 6529.2926 2.0625802e+10 0.17378857 0.042701901 109.07662 26.906242 6531.3751 1.9071360e+10 0.17761967 0.045774597 109.12383 26.808186 6533.4575 1.7639669e+10 0.18051439 0.047714019 109.17105 26.710130 6535.5400 1.6339483e+10 0.18064574 0.047990060 109.21685 26.612074 6537.6224 1.5175873e+10 0.18058987 0.048978669 109.26043 26.514018 6539.7049 1.4095738e+10 0.17949490 0.050496856 109.30402 26.415962 6541.7873 1.3051179e+10 0.17683288 0.051071208 109.34990 26.317906 6543.8698 1.2115973e+10 0.17427650 0.051610169 109.39711 26.219851 6545.9522 1.1262321e+10 0.17178608 0.052464098 109.44432 26.121795 6548.0347 1.0488401e+10 0.17036981 0.053678000 109.49154 26.023728 6550.1171 9.7681822e+09 0.16871844 0.055014686 109.53876 25.925659 6552.1996 9.0794935e+09 0.16673915 0.055536534 109.58598 25.827592 6554.2820 8.4535532e+09 0.16426351 0.054838298 109.63319 25.729536 6556.3645 7.8752371e+09 0.16193737 0.053959541 109.68040 25.631479 6558.4469 7.3442462e+09 0.15962428 0.052858471 109.72626 25.533423 6560.5294 6.8553340e+09 0.15686755 0.051797011 109.76984 25.435367 6562.6118 6.4114665e+09 0.15416549 0.050297731 109.81342 25.337311 6564.6943 6.0017109e+09 0.15142982 0.048456952 109.85925 25.241506 6566.7767 5.6297610e+09 0.14895880 0.046743494 109.90646 25.147082 6568.8592 5.2916824e+09 0.14651345 0.044981876 109.95367 25.052658 6570.9416 4.9756543e+09 0.14453185 0.044527456 109.99774 24.955078 6573.0241 4.6879510e+09 0.14230167 0.043638162 110.04133 24.857009 6575.1065 4.4204331e+09 0.13960955 0.042267829 110.08492 24.758941 6577.1890 4.1774580e+09 0.13645818 0.039923537 110.12850 24.660885 6579.2714 3.9541484e+09 0.13278723 0.036921283 110.17207 24.562829 6581.3539 3.7537918e+09 0.12966082 0.035489450 110.21565 24.464773 6583.4363 3.5780943e+09 0.12711040 0.034800817 110.25924 24.366717 6585.5188 3.4106199e+09 0.12482250 0.033556023 110.30282 24.268661 6587.6012 3.2301866e+09 0.12322872 0.033291578 110.34970 24.163179 6589.6837 3.0348129e+09 0.12147232 0.031689623 110.39873 24.052864 6591.7661 2.8342145e+09 0.11932064 0.028337424 110.44690 23.945063 6593.8486 2.6591836e+09 0.11730114 0.026313301 110.49047 23.850640 6595.9310 2.5113942e+09 0.11479457 0.025720121 110.53405 23.756216 6598.0135 2.3809297e+09 0.11309667 0.025400730 110.57763 23.660317 6600.0959 2.2601441e+09 0.11244538 0.025187088 110.62122 23.562248 6602.1784 2.1437072e+09 0.11189342 0.027364411 110.66481 23.464179 6604.2608 2.0441573e+09 0.11053308 0.026226149 110.70839 23.366118 6606.3433 1.9489940e+09 0.10994240 0.026887100 110.75197 23.268062 6608.4257 1.8614984e+09 0.10739021 0.023721115 110.79556 23.170006 6610.5082 1.7751660e+09 0.10442310 0.024488534 110.83913 23.075211 6612.5906 1.6902710e+09 0.10275463 0.023879455 110.88271 22.980787 6614.6731 1.6075710e+09 0.10158721 0.023476766 110.92629 22.885838 6616.7555 1.5304622e+09 0.10005936 0.023400880 110.96987 22.787782 6618.8380 1.4587703e+09 0.099227038 0.024403571 111.01345 22.689726 6620.9204 1.3924531e+09 0.098270298 0.025063806 111.05562 22.593085 6623.0029 1.3305880e+09 0.096650656 0.024492894 111.09557 22.498649 6625.0853 1.2693899e+09 0.095015197 0.025499432 111.13553 22.404213 6627.1678 1.2133796e+09 0.092761756 0.025381622 111.17779 22.307468 6629.2502 1.1648188e+09 0.091571119 0.026063862 111.22137 22.209412 6631.3327 1.1190373e+09 0.089959033 0.025964560 111.26495 22.111356 6633.4151 1.0641111e+09 0.088942432 0.026224731 111.30973 22.006074 6635.4976 1.0031369e+09 0.087902792 0.026474408 111.35468 21.899845 6637.5800 9.4150850e+08 0.087101811 0.025877329 111.39903 21.797184 6639.6625 8.9184542e+08 0.086939887 0.025391288 111.44261 21.699128 6641.7449 8.5728435e+08 0.087379849 0.025150830 111.48619 21.601072 6643.8274 8.2415064e+08 0.086598682 0.025317544 111.52729 21.505488 6645.9098 7.8904917e+08 0.085763869 0.025877908 111.56725 21.411051 6647.9923 7.5286275e+08 0.084951389 0.026960223 111.60720 21.316614 6650.0747 7.2286806e+08 0.084255181 0.026272346 111.64715 21.218813 6652.1572 6.9919352e+08 0.083663661 0.027293769 111.68710 21.120757 6654.2396 6.7216506e+08 0.082873541 0.027934138 111.72793 21.021260 6656.3221 6.4406549e+08 0.081084082 0.028306112 111.77287 20.915031 6658.4045 6.1458287e+08 0.079634116 0.030778534 111.81782 20.808802 6660.4870 5.8745194e+08 0.078246313 0.032068646 111.86177 20.711177 6662.5694 5.5940226e+08 0.076922013 0.032724783 111.90534 20.616752 6664.6519 5.2768604e+08 0.076052173 0.029820857 111.94892 20.522328 6666.7343 4.9939993e+08 0.075796951 0.027051690 111.98896 20.424361 6668.8168 4.7933023e+08 0.074533685 0.028193574 112.02891 20.326305 6670.8992 4.6685253e+08 0.074335940 0.026912029 112.06997 20.226433 6672.9817 4.5597559e+08 0.073786921 0.027448604 112.11492 20.120188 6675.0641 4.3699972e+08 0.072216189 0.029921208 112.15987 20.013943 6677.1466 4.1413047e+08 0.070281080 0.032149825 112.20094 19.916855 6679.2290 3.9376598e+08 0.069991120 0.030078503 112.24089 19.822431 6681.3115 3.7712777e+08 0.071106700 0.029896329 112.28077 19.728007 6683.3939 3.6710879e+08 0.071623156 0.031765906 112.31708 19.633583 6685.4764 3.5997430e+08 0.071322073 0.033208024 112.35340 19.539159 6687.5588 3.4987337e+08 0.069360055 0.034031229 112.39202 19.441576 6689.6413 3.4013948e+08 0.067163062 0.033438759 112.43697 19.335346 6691.7237 3.3135814e+08 0.066203164 0.032830507 112.48191 19.229117 6693.8062 3.1929210e+08 0.065329351 0.031327515 112.52276 19.129590 6695.8886 3.1105125e+08 0.065163193 0.029696241 112.56271 19.031535 6697.9711 3.0033143e+08 0.064432590 0.030214159 112.60299 18.932935 6700.0535 2.9203825e+08 0.062874102 0.030707433 112.64794 18.826690 6702.1360 2.8283870e+08 0.061327299 0.032985321 112.69289 18.720446 6704.2184 2.7278534e+08 0.061652682 0.036284821 112.73249 18.621522 6706.3009 2.6034951e+08 0.061577329 0.038970087 112.76881 18.527097 6708.3833 2.5003911e+08 0.061150631 0.040461026 112.80512 18.432673 6710.4658 2.4294625e+08 0.059752981 0.040587668 112.84891 18.328028 6712.5482 2.3297415e+08 0.057735656 0.042847866 112.89385 18.221799 6714.6307 2.2220916e+08 0.055738835 0.047350824 112.93519 18.120507 6716.7131 2.0971884e+08 0.053864534 0.049451758 112.97150 18.026083 6718.7956 1.9623268e+08 0.051624568 0.051051494 113.00782 17.931658 6720.8780 1.9036935e+08 0.051813980 0.050318029 113.04987 17.829387 6722.9605 1.8636896e+08 0.050949769 0.049417781 113.09481 17.723158 6725.0429 1.7788143e+08 0.046862246 0.041549194 113.13887 17.616930 6727.1254 1.7068919e+08 0.045425566 0.040793322 113.17973 17.510701 6729.2078 1.5621986e+08 0.045113385 0.040906892 113.22059 17.404472 6731.2903 1.4866482e+08 0.043455643 0.042327771 113.25796 17.307318 6733.3727 1.4154169e+08 0.042441230 0.045948064 113.29428 17.212882 6735.4552 1.3492781e+08 0.043259343 0.049776659 113.33075 17.118314 6737.5376 1.3017594e+08 0.044787538 0.055848258 113.37569 17.016175 6739.6201 1.2070621e+08 0.045089157 0.063585435 113.42063 16.914032 6741.7025 1.1476949e+08 0.043413215 0.067762402 113.46325 16.809565 6743.7850 1.0705708e+08 0.039135746 0.076343024 113.50410 16.703336 6745.8674 1.0428859e+08 0.037825746 0.078931555 113.54496 16.597107 6747.9499 1.0313355e+08 0.033806358 0.067034147 113.58582 16.490878 6750.0324 95882132. 0.031303394 0.072059371 113.62667 16.384649 6752.1148 91893527. 0.028704875 0.074001631 113.66447 16.286374 6754.1973 87760263. 0.027706605 0.075896267 113.70079 16.191950 6756.2797 85806956. 0.025352961 0.074886621 113.73710 16.097526 6758.3622 85678761. 0.025361758 0.074471140 113.77760 15.995998 6760.4446 80254164. 0.025974883 0.076909106 113.81846 15.893854 6762.5271 78386981. 0.030501011 0.077200667 113.85931 15.789779 6764.6095 74612499. 0.033244934 0.079512485 113.90017 15.683550 6766.6920 69319240. 0.033841341 0.081278957 113.94103 15.577321 6768.7744 66887106. 0.029664815 0.083642509 113.98190 15.471076 6770.8569 62405584. 0.025718785 0.088957946 114.02276 15.364831 6772.9393 60874771. 0.021819584 0.094008804 114.06362 15.258595 6775.0218 54841869. 0.017697951 0.099059661 114.10447 15.152367 6777.1042 50039791. 0.012396134 0.10411052 114.14533 15.046671 6779.1867 47682631. 3.1632620e-05 0.10916138 114.18619 14.944528 6781.2691 47879660. 0.0029408848 0.11421223 114.22704 14.842384 6783.3516 50752125. 0.013116600 0.11926309 114.26790 14.737450