# # 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 = 44.668642 km # Date (UTC) = 2013-01-13T09:16:36.626 # Date (julian) = 2456305.88653502 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6487.9025 3.1500476e+11 0.015326671 0.028635255 -19.535964 50.164037 6489.7795 2.8051961e+11 0.021449028 0.029201255 -19.631726 50.068274 6491.6565 2.4961411e+11 0.027353500 0.029767256 -19.727489 49.972511 6493.5335 2.2342167e+11 0.032954104 0.030333256 -19.827522 49.870576 6495.4105 1.9794735e+11 0.038278869 0.030899257 -19.932742 49.761148 6497.2875 1.7230409e+11 0.043291787 0.031465258 -20.037962 49.651720 6499.1645 1.4819801e+11 0.047956076 0.032031258 -20.143182 49.542292 6501.0415 1.2720851e+11 0.052317459 0.032597259 -20.248402 49.432864 6502.9184 1.1061686e+11 0.056663513 0.033163259 -20.344418 49.333007 6504.7954 9.7752181e+10 0.061372737 0.033729260 -20.436483 49.237258 6506.6724 8.7279135e+10 0.066812646 0.034295261 -20.528549 49.141510 6508.5494 7.7542744e+10 0.073085485 0.034861261 -20.633561 49.036439 6510.4264 6.8739539e+10 0.080419266 0.035427262 -20.738781 48.931219 6512.3034 6.1151590e+10 0.089123882 0.035993262 -20.833759 48.831761 6514.1804 5.5319070e+10 0.099663267 0.036559263 -20.922142 48.736014 6516.0574 5.0621136e+10 0.11197007 0.037125264 -21.010524 48.640267 6517.9343 4.6248508e+10 0.12559729 0.037691264 -21.106424 48.532304 6519.8113 4.1999698e+10 0.14028000 0.038257265 -21.203226 48.422874 6521.6883 3.8146178e+10 0.15492456 0.038823265 -21.295677 48.320516 6523.5653 3.5107029e+10 0.16385497 0.039319223 -21.384060 48.224769 6525.4423 3.2534257e+10 0.16991034 0.039731736 -21.472442 48.129021 6527.3193 3.0180501e+10 0.17365861 0.040948275 -21.567572 48.022310 6529.1963 2.7777520e+10 0.17511270 0.042548429 -21.664374 47.912880 6531.0733 2.5497260e+10 0.17617807 0.045335310 -21.756029 47.809270 6532.9502 2.3641081e+10 0.17818276 0.047478024 -21.840729 47.713523 6534.8272 2.2131188e+10 0.17824262 0.048175967 -21.925430 47.617776 6536.7042 2.0746132e+10 0.17706798 0.048420587 -22.018721 47.512317 6538.5812 1.9312935e+10 0.17637076 0.049439700 -22.115523 47.402889 6540.4582 1.7925695e+10 0.17567853 0.051070567 -22.207054 47.298029 6542.3352 1.6767967e+10 0.17389339 0.051129493 -22.288072 47.202280 6544.2122 1.5805424e+10 0.17215942 0.051816466 -22.369089 47.106531 6546.0892 1.4912640e+10 0.17027651 0.052537891 -22.457266 47.002322 6547.9661 1.3957056e+10 0.16944732 0.053654773 -22.549860 46.892894 6549.8431 1.3013016e+10 0.16823627 0.054825502 -22.639647 46.786783 6551.7201 1.2205192e+10 0.16655257 0.055488525 -22.720664 46.691034 6553.5971 1.1548217e+10 0.16456969 0.055034908 -22.801682 46.595285 6555.4741 1.0926541e+10 0.16264804 0.054455009 -22.886582 46.490109 6557.3511 1.0242073e+10 0.16056912 0.053646046 -22.974966 46.376471 6559.2281 9.5467513e+09 0.15765691 0.052361438 -23.062237 46.265536 6561.1051 8.8937994e+09 0.15451464 0.051320909 -23.143255 46.169788 6562.9820 8.3856174e+09 0.15185626 0.049945449 -23.224273 46.074041 6564.8590 7.9558406e+09 0.14925104 0.048382282 -23.303687 45.978293 6566.7360 7.5666884e+09 0.14688620 0.046766518 -23.381022 45.882544 6568.6130 7.2150361e+09 0.14504585 0.045208160 -23.458356 45.786795 6570.4900 6.8398047e+09 0.14379549 0.044714535 -23.540617 45.681196 6572.3670 6.4450007e+09 0.14231533 0.044019993 -23.624793 45.571768 6574.2440 6.0347909e+09 0.14030655 0.042737826 -23.706615 45.467048 6576.1210 5.6792625e+09 0.13840226 0.041232166 -23.783950 45.371301 6577.9979 5.3834564e+09 0.13645763 0.038652838 -23.861285 45.275553 6579.8749 5.1105528e+09 0.13427887 0.036589507 -23.942920 45.171204 6581.7519 4.8106935e+09 0.13221787 0.035368916 -24.027096 45.061775 6583.6289 4.5068608e+09 0.13041487 0.034703340 -24.108613 44.955803 6585.5059 4.2269229e+09 0.12869571 0.033566319 -24.182266 44.860055 6587.3829 3.9943199e+09 0.12707119 0.033243202 -24.255919 44.764308 6589.2599 3.8052641e+09 0.12500466 0.032530413 -24.329577 44.668552 6591.1369 3.6432239e+09 0.12242174 0.029047479 -24.403240 44.572789 6593.0138 3.4945400e+09 0.12020086 0.027089346 -24.476902 44.477026 6594.8908 3.3213618e+09 0.11770427 0.025683497 -24.559209 44.370028 6596.7678 3.1349435e+09 0.11497504 0.025723783 -24.643385 44.260600 6598.6448 2.9508194e+09 0.11293174 0.025099310 -24.721222 44.155633 6600.5218 2.7929084e+09 0.11226227 0.026062595 -24.791191 44.056202 6602.3988 2.6611264e+09 0.11100334 0.027176326 -24.861161 43.956771 6604.2758 2.5388381e+09 0.10919865 0.026235021 -24.931130 43.860031 6606.1528 2.4327145e+09 0.10830505 0.027229458 -25.001100 43.764282 6608.0297 2.3296666e+09 0.10608982 0.023731585 -25.071230 43.668315 6609.9067 2.2149002e+09 0.10356302 0.023975275 -25.151190 43.558896 6611.7837 2.0903538e+09 0.10155102 0.024458672 -25.231158 43.449468 6613.6607 1.9673027e+09 0.10096424 0.023816006 -25.304734 43.348786 6615.5377 1.8615960e+09 0.099919293 0.023268075 -25.374703 43.253039 6617.4147 1.7760898e+09 0.099131424 0.023576737 -25.444673 43.157292 6619.2917 1.6986052e+09 0.098529764 0.024596290 -25.514642 43.061543 6621.1687 1.6337282e+09 0.097701395 0.025033543 -25.584611 42.965795 6623.0456 1.5654222e+09 0.096374306 0.024508738 -25.655787 42.867195 6624.9226 1.4854787e+09 0.095157011 0.025356192 -25.731546 42.757767 6626.7996 1.4042514e+09 0.093412054 0.025572109 -25.807304 42.648339 6628.6766 1.3251373e+09 0.092432559 0.025977806 -25.875178 42.550298 6630.5536 1.2593484e+09 0.091034422 0.025929666 -25.941466 42.454549 6632.4306 1.2059947e+09 0.089580330 0.026083976 -26.007753 42.358370 6634.3076 1.1572033e+09 0.088098312 0.026349279 -26.074040 42.258939 6636.1846 1.1120320e+09 0.086565324 0.026478080 -26.140327 42.159509 6638.0615 1.0696174e+09 0.085497868 0.025668961 -26.210417 42.056064 6639.9385 1.0204611e+09 0.085186358 0.025292621 -26.286176 41.946635 6641.8155 9.7013131e+08 0.085132494 0.025151070 -26.361599 41.837556 6643.6925 9.2472936e+08 0.084097220 0.025297179 -26.424203 41.741809 6645.5695 8.8677913e+08 0.083028901 0.025718473 -26.486808 41.646061 6647.4465 8.5338642e+08 0.081937971 0.026672857 -26.553490 41.546072 6649.3235 8.1842476e+08 0.080980829 0.027187796 -26.629248 41.436642 6651.2005 7.8093469e+08 0.080784042 0.026637790 -26.705005 41.327213 6653.0774 7.4180412e+08 0.080678768 0.027565204 -26.768477 41.230564 6654.9544 7.0651341e+08 0.079793421 0.027629627 -26.831081 41.134817 6656.8314 6.7664083e+08 0.078207774 0.028753153 -26.893686 41.039069 6658.7084 6.5220528e+08 0.076973089 0.031317460 -26.956290 40.943320 6660.5854 6.3541899e+08 0.075852335 0.032158096 -27.018894 40.847572 6662.4624 6.1322941e+08 0.074736755 0.032784846 -27.086000 40.744940 6664.3394 5.8388949e+08 0.073832041 0.030964336 -27.157550 40.635511 6666.2164 5.5266619e+08 0.073942133 0.026950756 -27.227495 40.527353 6668.0933 5.2479694e+08 0.073342480 0.027553382 -27.286425 40.427907 6669.9703 5.0690226e+08 0.072843010 0.027359100 -27.345356 40.328462 6671.8473 4.9200177e+08 0.072559926 0.026877424 -27.409487 40.224901 6673.7243 4.7418035e+08 0.071912394 0.028542478 -27.481036 40.115472 6675.6013 4.5262922e+08 0.070125460 0.030950064 -27.552129 40.006537 6677.4783 4.2809672e+08 0.068790436 0.031678285 -27.611051 39.910790 6679.3553 4.0728987e+08 0.068461577 0.029974189 -27.669973 39.815043 6681.2323 3.8867632e+08 0.069302687 0.029835545 -27.728895 39.719295 6683.1092 3.7867611e+08 0.069687981 0.031348686 -27.787817 39.623548 6684.9862 3.6722920e+08 0.069433919 0.032704139 -27.846739 39.527801 6686.8632 3.4938455e+08 0.067953381 0.034263321 -27.910757 39.423772 6688.7402 3.3370783e+08 0.065503326 0.033956056 -27.978098 39.314342 6690.6172 3.1275181e+08 0.064596941 0.033045132 -28.043509 39.208049 6692.4942 3.0059255e+08 0.063863833 0.032191460 -28.102431 39.112302 6694.3712 2.9185838e+08 0.063194496 0.030740808 -28.161352 39.016554 6696.2482 2.8080480e+08 0.063108060 0.029778891 -28.224599 38.913777 6698.1251 2.7001665e+08 0.062439082 0.030389598 -28.291940 38.804348 6700.0021 2.5824988e+08 0.061152058 0.030669303 -28.357613 38.696804 6701.8791 2.4682222e+08 0.059670336 0.032699370 -28.412852 38.601057 6703.7561 2.3582197e+08 0.060029387 0.035567265 -28.468091 38.505310 6705.6331 2.2719179e+08 0.060148957 0.037794127 -28.528441 38.403784 6707.5101 2.1690676e+08 0.059894307 0.040113757 -28.595781 38.294354 6709.3871 2.0733314e+08 0.059213371 0.040886346 -28.662561 38.185559 6711.2641 1.9813018e+08 0.057647414 0.040992662 -28.717800 38.089812 6713.1410 1.8749244e+08 0.055994559 0.044196767 -28.773040 37.994064 6715.0180 1.7949993e+08 0.054333642 0.047397035 -28.830891 37.893788 6716.8950 1.7442304e+08 0.052560584 0.049719648 -28.894022 37.784359 6718.7720 1.7037814e+08 0.050543313 0.051014763 -28.957154 37.674930 6720.6490 1.6666937e+08 0.050666955 0.050344568 -29.012749 37.578566 6722.5260 1.6122158e+08 0.050204432 0.049954948 -29.067989 37.482819 6724.4030 1.5333302e+08 0.047540509 0.046561573 -29.125119 37.383795 6726.2800 1.4695661e+08 0.044802707 0.040953892 -29.188250 37.274367 6728.1569 1.4022857e+08 0.044362192 0.039850547 -29.251382 37.164940 6730.0339 1.3444010e+08 0.043216398 0.040425433 -29.310879 37.055510 6731.9109 1.2799642e+08 0.041851870 0.043562931 -29.369802 36.946081 6733.7879 1.2327117e+08 0.041102106 0.048202107 -29.426929 36.843322 6735.6649 1.1946623e+08 0.042450831 0.049999271 -29.482169 36.747574 6737.5419 1.1422377e+08 0.043857321 0.055861757 -29.537408 36.651826 6739.4189 1.0899421e+08 0.044269758 0.063339173 -29.595492 36.545515 6741.2959 1.0459521e+08 0.043097357 0.066602504 -29.654415 36.436086 6743.1728 99498329. 0.039876962 0.072213473 -29.710421 36.332075 6745.0498 97053102. 0.037274826 0.078587837 -29.761977 36.236328 6746.9268 89912343. 0.033146531 0.068211917 -29.813534 36.140581 6748.8038 87405760. 0.033181521 0.071245778 -29.872968 36.035521 6750.6808 86630232. 0.030538719 0.073166622 -29.936100 35.926092 6752.5578 85197723. 0.027978288 0.073489014 -29.997950 35.816663 6754.4348 84094984. 0.026843584 0.075514301 -30.056873 35.707235 6756.3118 75476619. 0.024682790 0.074969116 -30.115797 35.597807 6758.1887 71359123. 0.024635423 0.074104457 -30.170811 35.488379 6760.0657 66524906. 0.025223503 0.076186627 -30.225526 35.378950 6761.9427 65401013. 0.028563818 0.078046112 -30.278495 35.277083 6763.8197 64689978. 0.031268296 0.078934212 -30.330051 35.181334 6765.6967 61094877. 0.032045153 0.079658378 -30.381607 35.085585 6767.5737 57675532. 0.024921503 0.081333386 -30.439332 34.978384 6769.4507 55846200. 0.025082271 0.085547343 -30.498255 34.868956 6771.3277 56477888. 0.031117801 0.090099863 -30.555237 34.761470