# # 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 = 42.412464 km # Date (UTC) = 2016-12-20T09:43:35.803 # Date (julian) = 2457742.90527549 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6526.3207 2.8264445e+10 0.17771096 0.040004331 111.49924 26.436196 6528.3286 2.5801392e+10 0.18062797 0.041703185 111.54476 26.341637 6530.3365 2.3396767e+10 0.18267759 0.044299832 111.59029 26.247088 6532.3444 2.1234704e+10 0.18404451 0.046971928 111.63581 26.152542 6534.3523 1.9276235e+10 0.18355650 0.048043119 111.68134 26.057997 6536.3602 1.7539100e+10 0.18192083 0.048112813 111.72686 25.963452 6538.3681 1.5980215e+10 0.18136947 0.049335944 111.77238 25.868906 6540.3760 1.4597645e+10 0.18015965 0.051031752 111.81790 25.774360 6542.3839 1.3363328e+10 0.17762922 0.051148003 111.86008 25.679814 6544.3918 1.2250675e+10 0.17531759 0.051962218 111.90210 25.585268 6546.3997 1.1244466e+10 0.17278484 0.052793451 111.94447 25.490721 6548.4076 1.0333500e+10 0.17062862 0.053789383 111.99000 25.396163 6550.4155 9.5445759e+09 0.16843180 0.055089409 112.03552 25.301605 6552.4234 8.8205992e+09 0.16596032 0.055480185 112.08020 25.207049 6554.4314 8.1609608e+09 0.16270045 0.054841432 112.12222 25.112504 6556.4393 7.5578611e+09 0.15923193 0.053948547 112.16424 25.017958 6558.4472 6.9884624e+09 0.15562209 0.052858274 112.20762 24.923412 6560.4551 6.4715873e+09 0.15144735 0.051864018 112.25314 24.828867 6562.4630 6.0003197e+09 0.14729166 0.050439382 112.29866 24.734322 6564.4709 5.5540764e+09 0.14334381 0.048558204 112.34232 24.639776 6566.4788 5.1503915e+09 0.14031955 0.046912050 112.38434 24.545231 6568.4867 4.7698448e+09 0.13818654 0.045324303 112.42636 24.450685 6570.4946 4.4276157e+09 0.13648539 0.044712644 112.46839 24.356130 6572.5025 4.1164485e+09 0.13455412 0.043942406 112.51041 24.261572 6574.5104 3.8305967e+09 0.13215617 0.042609877 112.55244 24.167014 6576.5183 3.5675965e+09 0.12974678 0.040774854 112.59446 24.075337 6578.5262 3.3237548e+09 0.12706897 0.037818728 112.63648 23.984293 6580.5341 3.0963408e+09 0.12464118 0.036027192 112.67850 23.893249 6582.5420 2.8943854e+09 0.12247564 0.035146308 112.72052 23.798829 6584.5499 2.7143132e+09 0.12015177 0.034215972 112.76254 23.704284 6586.5578 2.5438029e+09 0.11785702 0.033164086 112.80456 23.609739 6588.5657 2.3842881e+09 0.11581930 0.033191020 112.84658 23.515193 6590.5736 2.2257959e+09 0.11327737 0.029995114 112.88860 23.420647 6592.5815 2.0817347e+09 0.11074118 0.027508728 112.93062 23.326098 6594.5894 1.9540461e+09 0.10801293 0.025848979 112.97265 23.231540 6596.5973 1.8365487e+09 0.10497239 0.025724558 113.01468 23.136982 6598.6052 1.7273386e+09 0.10264310 0.025118227 113.05670 23.043820 6600.6131 1.6227580e+09 0.10183056 0.026250277 113.09872 22.952776 6602.6210 1.5263219e+09 0.10046516 0.026986703 113.14074 22.861731 6604.6289 1.4377234e+09 0.098818387 0.026444693 113.18276 22.768791 6606.6368 1.3506144e+09 0.097497117 0.026359661 113.22478 22.674245 6608.6447 1.2717083e+09 0.094628782 0.023715326 113.26680 22.579699 6610.6526 1.2036196e+09 0.091850492 0.024626523 113.30642 22.485154 6612.6605 1.1362512e+09 0.090719461 0.023827250 113.34494 22.390609 6614.6684 1.0733874e+09 0.089926997 0.023479989 113.38346 22.296063 6616.6763 1.0034286e+09 0.088880223 0.023388445 113.42489 22.204415 6618.6842 9.4270084e+08 0.088541539 0.024287453 113.46691 22.113359 6620.6921 8.9588604e+08 0.088042460 0.024990229 113.50894 22.022303 6622.7000 8.4779286e+08 0.086965956 0.024571673 113.54755 21.927845 6624.7079 8.0309825e+08 0.085694958 0.025241251 113.58607 21.833299 6626.7158 7.5570969e+08 0.084198174 0.025678890 113.62500 21.739170 6628.7237 7.1864809e+08 0.083181070 0.025996931 113.66702 21.648126 6630.7316 6.8564869e+08 0.081784484 0.025930105 113.70904 21.557082 6632.7395 6.5691348e+08 0.080548852 0.026121019 113.75014 21.465116 6634.7474 6.2366992e+08 0.079291365 0.026381363 113.78865 21.370571 6636.7553 5.9069241e+08 0.077954614 0.026256430 113.82717 21.276025 6638.7632 5.6434260e+08 0.076981941 0.025638391 113.86765 21.178268 6640.7711 5.3354020e+08 0.077543995 0.025176304 113.91099 21.075842 6642.7790 5.0921658e+08 0.077280501 0.025183576 113.95432 20.973415 6644.7869 4.7936502e+08 0.076387193 0.025428656 113.99652 20.877827 6646.7948 4.5316993e+08 0.075315699 0.026331578 114.03855 20.783269 6648.8027 4.2973351e+08 0.074196914 0.027501636 114.08053 20.688759 6650.8106 4.0968004e+08 0.073835652 0.026440814 114.11905 20.597715 6652.8185 3.9103362e+08 0.073583203 0.027475734 114.15756 20.506672 6654.8264 3.7279273e+08 0.072748214 0.027684155 114.19608 20.415075 6656.8343 3.5537705e+08 0.071235673 0.028755713 114.23460 20.320529 6658.8422 3.3827939e+08 0.070071060 0.031554811 114.27312 20.225983 6660.8501 3.2327584e+08 0.069101007 0.032398737 114.31164 20.132496 6662.8580 3.1012979e+08 0.068188758 0.032562858 114.35016 20.041451 6664.8659 2.9855179e+08 0.067666942 0.029037625 114.38868 19.950407 6666.8738 2.8327789e+08 0.067526821 0.027078875 114.42935 19.854275 6668.8818 2.6588797e+08 0.066555923 0.028251060 114.47269 19.751834 6670.8897 2.4249695e+08 0.066856661 0.026916471 114.51602 19.649392 6672.8976 2.1938203e+08 0.066762006 0.027399838 114.55498 19.557303 6674.9055 2.0590803e+08 0.065520162 0.029718602 114.59350 19.466260 6676.9134 1.9396130e+08 0.063531049 0.032302377 114.63184 19.375032 6678.9213 1.8567329e+08 0.062966159 0.030320437 114.66686 19.280487 6680.9292 1.7615790e+08 0.064011849 0.029642061 114.70188 19.185942 6682.9371 1.6284246e+08 0.064706683 0.031140495 114.73853 19.089846 6684.9450 1.5509817e+08 0.064629672 0.032702045 114.78186 18.987419 6686.9529 1.4740043e+08 0.063145949 0.034315477 114.82519 18.884992 6688.9608 1.4310531e+08 0.060511291 0.034006968 114.86536 18.790060 6690.9687 1.3973964e+08 0.059709304 0.033004853 114.90387 18.699016 6692.9766 1.3320886e+08 0.059018718 0.031631295 114.94239 18.607972 6694.9845 1.2968894e+08 0.058515561 0.029881236 114.98478 18.507780 6696.9924 1.2392637e+08 0.058120402 0.030088097 115.02812 18.405339 6699.0003 1.1878931e+08 0.057075248 0.031590177 115.06926 18.305913 6701.0082 1.1248548e+08 0.055596177 0.031421446 115.10428 18.214869 6703.0161 1.0586392e+08 0.055594259 0.033715472 115.13930 18.123825 6705.0240 1.0221461e+08 0.055982590 0.036711241 115.17772 18.028128 6707.0319 98114767. 0.055858452 0.040182259 115.22105 17.925702 6709.0398 93975595. 0.055555555 0.041107238 115.26438 17.823276 6711.0477 92481212. 0.054201952 0.040746487 115.30048 17.730756 6713.0556 91470966. 0.052611017 0.043887677 115.33550 17.639712 6715.0635 89345719. 0.051009377 0.047443525 115.37064 17.548501 6717.0714 88621110. 0.049325562 0.049869853 115.41397 17.446076 6719.0793 82080329. 0.047424268 0.051294503 115.45731 17.343650 6721.0872 78549656. 0.048136449 0.050330171 115.49668 17.246639 6723.0951 70791307. 0.047340356 0.049421981 115.53170 17.155583 6725.1030 67130713. 0.043487667 0.041511682 115.56672 17.064527 6727.1109 66662980. 0.042211792 0.040812635 115.60446 16.966412 6729.1188 69124198. 0.042021007 0.040966242 115.64385 16.863986 6731.1267 66837638. 0.040451031 0.042002190 115.68325 16.761560 6733.1346 64241415. 0.039430286 0.044655122 115.72264 16.659133 6735.1425 58550213. 0.039676530 0.049444715 115.76204 16.556707 6737.1504 54636714. 0.041011691 0.054614699 115.80095 16.460472 6739.1583 54840442. 0.041222606 0.063020295 115.83947 16.369428 6741.1662 49370177. 0.039113772 0.066232740 115.87799 16.278384 6743.1741 47148727. 0.033347338 0.072222014 115.91711 16.179507 6745.1820 42520337. 0.017083767 0.078643405 115.95651 16.077081 6747.1899 43331941. 0.022487978 0.067295780 115.99590 15.974655 6749.1978 48009607. 0.042896690 0.072223770 116.03529 15.872228