# # 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 = 63.369779 km # Date (UTC) = 2013-12-14T10:21:23.219 # Date (julian) = 2456640.93151874 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.0188 6.5562996e+10 0.046621244 0.032288881 100.03625 29.351923 6502.9175 5.8492548e+10 0.057344039 0.033162981 100.10197 29.210377 6505.8162 5.2419105e+10 0.068311044 0.034037082 100.17058 29.071729 6508.7150 4.7070513e+10 0.079605794 0.034911182 100.24136 28.935237 6511.6137 4.2270122e+10 0.091322233 0.035785283 100.31214 28.798735 6514.5124 3.8035051e+10 0.10358777 0.036659383 100.38292 28.662227 6517.4111 3.4227219e+10 0.11645535 0.037533484 100.45058 28.525729 6520.3098 3.0871059e+10 0.13000101 0.038407584 100.51629 28.389237 6523.2085 2.7886447e+10 0.14084834 0.039230800 100.58201 28.252745 6526.1073 2.5231008e+10 0.14620344 0.039780540 100.64773 28.116254 6529.0060 2.2918182e+10 0.15170550 0.042245312 100.71679 27.976421 6531.9047 2.0851035e+10 0.15696712 0.046545478 100.78756 27.834875 6534.8034 1.8953378e+10 0.15976892 0.048169304 100.85489 27.696769 6537.7021 1.7203403e+10 0.16149993 0.049016250 100.92062 27.560259 6540.6009 1.5661988e+10 0.16325533 0.051137959 100.98634 27.423762 6543.4996 1.4293292e+10 0.16398447 0.051513007 101.05206 27.287270 6546.3983 1.2952658e+10 0.16456360 0.052792250 101.12374 27.138375 6549.2970 1.1685533e+10 0.16451881 0.054268949 101.19768 26.984819 6552.1957 1.0550972e+10 0.16374300 0.055537504 101.26365 26.847792 6555.0944 9.6252173e+09 0.16135243 0.054774015 101.32938 26.711300 6557.9932 8.8961303e+09 0.15817109 0.053243596 101.39008 26.574810 6560.8919 8.2108316e+09 0.15446072 0.051470173 101.45081 26.438319 6563.7906 7.5544742e+09 0.15132870 0.049013838 101.51654 26.301809 6566.6893 6.9508631e+09 0.14913542 0.046792946 101.58209 26.165300 6569.5880 6.4226751e+09 0.14746725 0.044890696 101.64275 26.028809 6572.4867 5.9796381e+09 0.14586638 0.043951412 101.70370 25.892602 6575.3855 5.5961742e+09 0.14359346 0.041987973 101.76942 25.761166 6578.2842 5.2425041e+09 0.14091645 0.038200869 101.83474 25.629334 6581.1829 4.9080137e+09 0.13822409 0.035541227 101.89540 25.492844 6584.0816 4.5862903e+09 0.13612600 0.034471055 101.95657 25.356352 6586.9803 4.2831544e+09 0.13424928 0.033158624 102.02230 25.219842 6589.8790 4.0019440e+09 0.13210416 0.031302033 102.08741 25.083334 6592.7778 3.7484377e+09 0.12913308 0.027318082 102.14807 24.946843 6595.6765 3.5162036e+09 0.12576126 0.025693724 102.20873 24.810352 6598.5752 3.3015703e+09 0.12300201 0.025132546 102.26939 24.673860 6601.4739 3.1082057e+09 0.12232876 0.027268876 102.33006 24.538204 6604.3726 2.9234899e+09 0.12043170 0.026292532 102.39073 24.406750 6607.2713 2.7608131e+09 0.11849829 0.025171185 102.45140 24.274350 6610.1701 2.6093367e+09 0.11389491 0.024165472 102.51206 24.137859 6613.0688 2.4582751e+09 0.11079274 0.023598827 102.57431 23.997789 6615.9675 2.3066877e+09 0.10816207 0.023281299 102.64256 23.844234 6618.8662 2.1534078e+09 0.10700516 0.024424893 102.70510 23.700664 6621.7649 2.0125758e+09 0.10607186 0.024835906 102.76071 23.569227 6624.6637 1.8889936e+09 0.10458442 0.025217559 102.81871 23.435399 6627.5624 1.7847864e+09 0.10287347 0.025534045 102.87938 23.298907 6630.4611 1.6868146e+09 0.10153349 0.025929438 102.94004 23.164910 6633.3598 1.5974880e+09 0.099923999 0.026215071 103.00071 23.033457 6636.2585 1.5181015e+09 0.098178426 0.026449358 103.05876 22.899398 6639.1572 1.4406491e+09 0.097095309 0.025571874 103.11437 22.762908 6642.0560 1.3659559e+09 0.097821563 0.025153986 103.17679 22.620283 6644.9547 1.2843015e+09 0.096825507 0.025446786 103.24504 22.472414 6647.8534 1.2063156e+09 0.095500906 0.026887094 103.30342 22.333429 6650.7521 1.1386250e+09 0.094537079 0.026427416 103.35903 22.196938 6653.6508 1.0821676e+09 0.093739166 0.027857949 103.41464 22.064490 6656.5495 1.0342263e+09 0.091308001 0.028505748 103.47026 21.933036 6659.4483 9.8986134e+08 0.089094667 0.031741091 103.53003 21.797428 6662.3470 9.4389863e+08 0.087060518 0.032849597 103.59069 21.660936 6665.2457 8.9634988e+08 0.085897573 0.028144552 103.65296 21.514813 6668.1444 8.4533709e+08 0.084786074 0.027598569 103.71491 21.368395 6671.0431 7.9731796e+08 0.083959892 0.026865963 103.77052 21.236960 6673.9418 7.5698839e+08 0.082720783 0.028867818 103.82612 21.104968 6676.8406 7.2076089e+08 0.079440663 0.032255462 103.88173 20.968477 6679.7393 6.8881949e+08 0.078754545 0.029656863 103.93826 20.830484 6682.6380 6.5227412e+08 0.079523126 0.030911998 104.00082 20.682616 6685.5367 6.1622207e+08 0.079173753 0.033271741 104.06078 20.540881 6688.4354 5.8145386e+08 0.076128394 0.033885703 104.11640 20.409427 6691.3342 5.5075651e+08 0.074434080 0.032922425 104.17476 20.271476 6694.2329 5.2501086e+08 0.073315077 0.030934651 104.23732 20.123608 6697.1316 5.0215364e+08 0.072891382 0.030107917 104.29545 19.982993 6700.0303 4.7915878e+08 0.071087344 0.030690194 104.35106 19.846501 6702.9290 4.5577476e+08 0.069870686 0.033618556 104.40750 19.702510 6705.8277 4.3133860e+08 0.069985308 0.038140154 104.46437 19.554643 6708.7265 4.0848877e+08 0.069365037 0.040834661 104.52010 19.421579 6711.6252 3.9009489e+08 0.066996242 0.041403506 104.57571 19.290143 6714.5239 3.7238277e+08 0.064248514 0.047342794 104.63774 19.143522 6717.4226 3.5553295e+08 0.061619822 0.049848128 104.69833 18.998343 6720.3213 3.3916918e+08 0.060067075 0.050382535 104.74888 18.866907 6723.2200 3.2586241e+08 0.058973198 0.049491664 104.80168 18.732405 6726.1188 3.1116540e+08 0.054167405 0.040952439 104.86424 18.584537 6729.0175 2.9616738e+08 0.053243156 0.041033780 104.92165 18.443707 6731.9162 2.8232484e+08 0.050758902 0.043573416 104.97220 18.312271 6734.8149 2.7092922e+08 0.050246879 0.049304569 105.02560 18.173438 6737.7136 2.6031662e+08 0.052235234 0.056408841 105.08247 18.025569 6740.6123 2.4551254e+08 0.051719531 0.065096447 105.14328 17.877701 6743.5111 2.3104165e+08 0.046795027 0.074495046 105.20584 17.729833 6746.4098 2.1660586e+08 0.042909782 0.074223142 105.25720 17.597288 6749.3085 2.1015903e+08 0.039741480 0.072193467 105.30775 17.465834 6752.2072 2.0840545e+08 0.035191815 0.073894692 105.36435 17.324130 6755.1059 2.0642782e+08 0.033173065 0.074558902 105.42122 17.180827 6758.0046 2.0349455e+08 0.031394592 0.073715152 105.47810 17.032959 6760.9034 1.9468428e+08 0.032101258 0.077783947 105.53497 16.885091 6763.8021 1.8313985e+08 0.038432694 0.078880524 105.59184 16.737223 6766.7008 1.7203728e+08 0.039905786 0.081298969 105.64871 16.589356 6769.5995 1.6357656e+08 0.034091281 0.085908354 105.70558 16.441488 6772.4982 1.5507455e+08 0.028886724 0.092939017 105.76245 16.298865 6775.3970 1.4858219e+08 0.023644077 0.099969681 105.81932 16.155752 6778.2957 1.4095046e+08 0.018418078 0.10700035 105.87620 16.007883 6781.1944 1.3410540e+08 0.013172785 0.11403101 105.93307 15.860014 6784.0931 1.2907340e+08 0.0078919441 0.12106167 105.98995 15.712147 6786.9918 1.2339666e+08 0.0026172515 0.12809234 106.04682 15.567946 6789.8905 1.1806198e+08 -0.0026673740 0.13512300 106.10370 15.425745 6792.7893 1.1482364e+08 -0.0079933621 0.14215366 106.16058 15.278504 6795.6880 1.1266522e+08 -0.013335665 0.14918433 106.21745 15.130636 6798.5867 1.0857153e+08 -0.018652408 0.15621499 106.27432 14.982769 6801.4854 1.0359624e+08 -0.023964056 0.16324566 106.32907 14.837020 6804.3841 98269496. -0.029282212 0.17027632 106.38026 14.694839 6807.2828 94631524. -0.034610967 0.17730698 106.43494 14.549164 6810.1816 89966830. -0.039912260 0.18433765 106.49181 14.401296 6813.0803 85010944. -0.045190144 0.19136831 106.55564 14.240907 6815.9790 79682454. -0.050447129 0.19839898 106.61625 14.084861 6818.8777 76149759. -0.055689236 0.20542964 106.66744 13.942680 6821.7764 75090250. -0.060917064 0.21246030 106.72180 13.797320 6824.6751 74634287. -0.066137703 0.21949097 106.77867 13.649452 6827.5739 71885638. -0.071381172 0.22652163 106.83685 13.489869 6830.4726 67903690. -0.076656629 0.23355230 106.89492 13.331210 6833.3713 63232278. -0.081974217 0.24058296 106.95179 13.183342 6836.2700 57755995. -0.087361175 0.24761362 107.00949 13.028101 6839.1687 59084437. -0.092571761 0.25464429 107.06798 12.865606 6842.0674 58146904. -0.097905163 0.26167495 107.11942 12.722724 6844.9662 53513177. -0.10350988 0.26870561 107.17347 12.576335 6847.8649 50815895. -0.10925589 0.27573628 107.23847 12.413839 6850.7636 48162248. -0.11543082 0.28276694 107.29423 12.261110 6853.6623 48161655. -0.12281217 0.28979761 107.34542 12.113219 6856.5610 47933283. -0.14140727 0.29682827 107.40326 11.952055 6859.4598 45271583. -0.13548332 0.30385893 107.46417 11.789576 6862.3585 43220962. -0.11390866 0.31088960 107.52917 11.627081