# # 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 = 35.587312 km # Date (UTC) = 2011-01-06T08:34:09.836 # Date (julian) = 2455567.85705829 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.7874 2.7258007e+11 0.028946642 0.030409808 -14.663211 43.213826 6496.1132 2.2157736e+11 0.037331613 0.031111161 -14.754477 43.095180 6498.4391 1.7818611e+11 0.045456415 0.031812514 -14.845742 42.976536 6500.7649 1.4435483e+11 0.053308328 0.032513868 -14.935119 42.859590 6503.0908 1.1940169e+11 0.060982676 0.033215221 -15.016253 42.750059 6505.4166 1.0131000e+11 0.068704001 0.033916574 -15.097387 42.640527 6507.7425 8.7511345e+10 0.076749124 0.034617927 -15.185829 42.524422 6510.0683 7.5834546e+10 0.085268995 0.035319280 -15.277095 42.405775 6512.3942 6.5702637e+10 0.094394872 0.036020634 -15.365942 42.284713 6514.7200 5.7282214e+10 0.10437737 0.036721987 -15.452645 42.161506 6517.0458 5.0186924e+10 0.11531133 0.037423340 -15.539347 42.039843 6519.3717 4.4184784e+10 0.12729203 0.038124693 -15.626049 41.921197 6521.6975 3.8976645e+10 0.14031769 0.038826046 -15.712751 41.802551 6524.0234 3.4555639e+10 0.14849676 0.039435270 -15.799453 41.683907 6526.3492 3.0866768e+10 0.15599416 0.040034223 -15.886156 41.565263 6528.6751 2.7608302e+10 0.16333930 0.041978031 -15.972858 41.442256 6531.0009 2.4724471e+10 0.16927155 0.045230039 -16.059560 41.319047 6533.3268 2.2309703e+10 0.17532109 0.047658460 -16.138899 41.209402 6535.6526 2.0330070e+10 0.17714147 0.047941189 -16.215966 41.103941 6537.9785 1.8678635e+10 0.17835309 0.049146534 -16.294549 40.994540 6540.3043 1.7138904e+10 0.17750353 0.050997873 -16.376688 40.875895 6542.6302 1.5603553e+10 0.17462778 0.051241486 -16.459319 40.756758 6544.9560 1.4105114e+10 0.17259627 0.052419890 -16.546034 40.633532 6547.2819 1.2761154e+10 0.17011259 0.053394554 -16.632748 40.510305 6549.6077 1.1573890e+10 0.16795777 0.054585590 -16.715270 40.391277 6551.9336 1.0529796e+10 0.16613495 0.055563446 -16.797408 40.272633 6554.2594 9.6276652e+09 0.16354620 0.054837824 -16.879548 40.150680 6556.5853 8.8139259e+09 0.16123320 0.053927082 -16.961687 40.027471 6558.9111 8.0571981e+09 0.15840726 0.052462930 -17.041391 39.906697 6561.2370 7.3405990e+09 0.15542371 0.051255915 -17.118966 39.788051 6563.5628 6.6984101e+09 0.15250144 0.049277336 -17.194980 39.673917 6565.8886 6.1766986e+09 0.14951495 0.047309325 -17.267992 39.568457 6568.2145 5.7395155e+09 0.14713660 0.045574489 -17.341003 39.462997 6570.5403 5.3439794e+09 0.14455028 0.044693680 -17.418016 39.341976 6572.8662 4.9409696e+09 0.14165400 0.043734110 -17.495592 39.218767 6575.1920 4.5390251e+09 0.13828467 0.042182032 -17.573167 39.098685 6577.5179 4.1673075e+09 0.13442479 0.039406898 -17.650743 38.980039 6579.8437 3.8306059e+09 0.13030782 0.036606659 -17.728319 38.861394 6582.1696 3.5251772e+09 0.12625695 0.035247647 -17.805894 38.742750 6584.4954 3.2469293e+09 0.12212578 0.034245632 -17.883474 38.622719 6586.8213 2.9862337e+09 0.11831863 0.033160680 -17.961061 38.499492 6589.1471 2.7537351e+09 0.11499082 0.032754096 -18.037686 38.378245 6591.4730 2.5587596e+09 0.11176433 0.028668216 -18.106641 38.272786 6593.7988 2.3998826e+09 0.10917844 0.026359561 -18.175596 38.167326 6596.1247 2.2650468e+09 0.10616629 0.025726707 -18.247172 38.053347 6598.4505 2.1268806e+09 0.10407871 0.025192074 -18.320185 37.934700 6600.7764 1.9863622e+09 0.10359154 0.026585932 -18.393197 37.813980 6603.1022 1.8432620e+09 0.10252131 0.026602766 -18.466209 37.690772 6605.4281 1.7093307e+09 0.10169806 0.027024149 -18.540423 37.568765 6607.7539 1.5884374e+09 0.099682001 0.024218316 -18.617998 37.450121 6610.0798 1.4770557e+09 0.096422240 0.024079181 -18.695246 37.331476 6612.4056 1.3720865e+09 0.094099645 0.024017703 -18.768258 37.212832 6614.7314 1.2675660e+09 0.092910361 0.023436553 -18.841271 37.094187 6617.0573 1.1823183e+09 0.091302620 0.023458245 -18.903575 36.987138 6619.3831 1.1098141e+09 0.090378158 0.024618360 -18.964426 36.881662 6621.7090 1.0454889e+09 0.089033834 0.024854449 -19.030328 36.768821 6624.0348 9.8337281e+08 0.086765126 0.024880959 -19.103340 36.645612 6626.3607 9.1701144e+08 0.085127226 0.026131356 -19.176353 36.523426 6628.6865 8.5992788e+08 0.083250523 0.025981834 -19.249365 36.404782 6631.0124 8.0332526e+08 0.081188339 0.025932024 -19.322229 36.286138 6633.3382 7.5068200e+08 0.079483862 0.026211304 -19.390677 36.167492 6635.6641 6.9888495e+08 0.077579328 0.026499376 -19.459126 36.048846 6637.9899 6.4978917e+08 0.076254451 0.025676577 -19.527576 35.930201 6640.3158 6.0694651e+08 0.076242653 0.025232017 -19.596026 35.811556 6642.6416 5.6510314e+08 0.076430712 0.025177953 -19.664475 35.692910 6644.9675 5.2569535e+08 0.075947415 0.025448168 -19.732924 35.574265 6647.2933 4.8918939e+08 0.075231120 0.026592211 -19.801373 35.453528 6649.6192 4.5197186e+08 0.074781569 0.026780204 -19.869822 35.330322 6651.9450 4.1871062e+08 0.074767253 0.027208379 -19.938271 35.208332 6654.2709 3.8981474e+08 0.074390669 0.027920838 -20.006719 35.089687 6656.5967 3.6189591e+08 0.072831248 0.028547142 -20.074594 34.972035 6658.9226 3.4325028e+08 0.071340925 0.031697243 -20.135445 34.866562 6661.2484 3.2335967e+08 0.070099308 0.032661465 -20.196295 34.761088 6663.5742 3.0720559e+08 0.068743721 0.032324075 -20.261785 34.647573 6665.9001 2.8784091e+08 0.068558270 0.027072293 -20.330235 34.528926 6668.2259 2.6952342e+08 0.067615573 0.027670718 -20.396772 34.410281 6670.5518 2.5496611e+08 0.066966212 0.027072997 -20.460658 34.291636 6672.8776 2.3941139e+08 0.066316507 0.027388294 -20.524543 34.172992 6675.2035 2.2624784e+08 0.064193878 0.030188106 -20.588429 34.054346 6677.5293 2.1127511e+08 0.061839909 0.031605716 -20.652479 33.935700 6679.8552 2.0025183e+08 0.061274108 0.029561089 -20.720928 33.817056 6682.1810 1.8700131e+08 0.061455587 0.030562855 -20.789377 33.698412 6684.5069 1.7501201e+08 0.060868645 0.032679814 -20.853972 33.579766 6686.8327 1.6235243e+08 0.058679721 0.034245576 -20.917858 33.461119 6689.1586 1.5096295e+08 0.054979264 0.033873285 -20.981744 33.342474 6691.4844 1.4204222e+08 0.053287076 0.032886972 -21.045630 33.223830 6693.8103 1.3638591e+08 0.051717959 0.031326117 -21.107407 33.105186 6696.1361 1.3421075e+08 0.051203176 0.029732338 -21.166729 32.986542 6698.4620 1.2809852e+08 0.049754136 0.030851912 -21.227289 32.867892 6700.7878 1.2028705e+08 0.047367602 0.031252058 -21.291185 32.749229 6703.1137 1.1157990e+08 0.046297563 0.033959639 -21.355804 32.629221 6705.4395 1.0098238e+08 0.045463534 0.037449955 -21.428805 32.493648 6707.7654 92636938. 0.044061026 0.040077191 -21.499596 32.360809 6710.0912 82873350. 0.041037806 0.040514346 -21.558928 32.242145 6712.4170 76925464. 0.036267741 0.042604275 -21.618260 32.123481 6714.7429 72440749. 0.028346328 0.047359259 -21.682012 32.004836 6717.0687 68146269. -0.011232278 0.049870016 -21.745897 31.886192 6719.3946 63912229. 0.018790218 0.050994950 -21.806227 31.767547 6721.7204 60128628. 0.094346540 0.050520970 -21.865549 31.648902