# # 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 = 37.864335 km # Date (UTC) = 2013-01-24T09:51:30.625 # Date (julian) = 2456316.91077112 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.7172 1.0309590e+11 0.027839191 0.030388647 -24.019593 56.429067 6495.6640 9.4323439e+10 0.033304739 0.030975686 -24.215122 56.276309 6497.6107 8.7091653e+10 0.038675935 0.031562725 -24.389346 56.135064 6499.5575 8.1139399e+10 0.044135286 0.032149765 -24.547227 56.002649 6501.5042 7.6747070e+10 0.049928427 0.032736804 -24.708176 55.870233 6503.4510 7.2670510e+10 0.056173314 0.033323843 -24.871149 55.737816 6505.3977 6.7447304e+10 0.062783737 0.033910882 -25.047142 55.588476 6507.3445 6.1934509e+10 0.069888455 0.034497921 -25.230317 55.429726 6509.2912 5.6461917e+10 0.077573343 0.035084961 -25.383200 55.297226 6511.2380 5.1720617e+10 0.086113094 0.035672000 -25.535987 55.164810 6513.1848 4.7740625e+10 0.095632205 0.036259039 -25.688744 55.032421 6515.1315 4.4014114e+10 0.10601943 0.036846078 -25.841119 54.899647 6517.0783 4.0494039e+10 0.11725874 0.037433117 -25.988815 54.762138 6519.0250 3.7296706e+10 0.12937181 0.038020157 -26.136510 54.625198 6520.9718 3.4557154e+10 0.14237248 0.038607196 -26.284204 54.492783 6522.9185 3.1883564e+10 0.15334491 0.039157782 -26.435373 54.356440 6524.8653 2.9096268e+10 0.16212090 0.039734362 -26.606502 54.197533 6526.8121 2.6355633e+10 0.16894669 0.040519431 -26.763023 54.052193 6528.7588 2.3897483e+10 0.17408192 0.042044449 -26.905624 53.919778 6530.7056 2.1956929e+10 0.17800495 0.044816479 -27.048210 53.784583 6532.6523 2.0348402e+10 0.18080475 0.047229140 -27.190784 53.647101 6534.5991 1.8850782e+10 0.18065299 0.048112143 -27.330397 53.512582 6536.5458 1.7452423e+10 0.17920610 0.048278875 -27.467906 53.380167 6538.4926 1.6127718e+10 0.17855889 0.049396548 -27.605415 53.244587 6540.4393 1.4895741e+10 0.17764202 0.051061662 -27.742925 53.107078 6542.3861 1.3791721e+10 0.17560885 0.051148825 -27.877084 52.972917 6544.3329 1.2759937e+10 0.17378927 0.051914372 -28.009499 52.840500 6546.2796 1.1849009e+10 0.17183365 0.052694607 -28.141914 52.704549 6548.2264 1.0999223e+10 0.17062638 0.053735249 -28.274330 52.567040 6550.1731 1.0181896e+10 0.16947166 0.055028710 -28.406746 52.433253 6552.1199 9.4591235e+09 0.16793998 0.055556591 -28.539162 52.300838 6554.0666 8.8636157e+09 0.16561436 0.054833779 -28.653716 52.179587 6556.0134 8.3968172e+09 0.16337311 0.054011156 -28.762847 52.061725 6557.9602 8.0004323e+09 0.16147514 0.053264279 -28.880631 51.936944 6559.9069 7.5947585e+09 0.15876852 0.052284816 -29.007928 51.804556 6561.8537 7.1485096e+09 0.15554289 0.050952012 -29.132629 51.669543 6563.8004 6.7049759e+09 0.15212817 0.049002460 -29.254860 51.532034 6565.7472 6.3062964e+09 0.14922753 0.047469963 -29.377090 51.394525 6567.6939 5.9229596e+09 0.14671878 0.046030446 -29.499320 51.257016 6569.6407 5.5760749e+09 0.14386472 0.044894124 -29.621550 51.122487 6571.5874 5.2479233e+09 0.14103077 0.044342831 -29.743781 50.990071 6573.5342 4.9059426e+09 0.13817762 0.043228794 -29.866011 50.854487 6575.4810 4.5849141e+09 0.13583663 0.041892151 -29.988241 50.716978 6577.4277 4.3111758e+09 0.13361679 0.039548530 -30.096099 50.592405 6579.3745 4.0991810e+09 0.13100135 0.036864632 -30.196500 50.474545 6581.3212 3.9212861e+09 0.12865223 0.035499336 -30.303051 50.349463 6583.2680 3.7368052e+09 0.12674851 0.034886023 -30.420188 50.211954 6585.2147 3.5204631e+09 0.12484979 0.033799090 -30.537316 50.074456 6587.1615 3.2958931e+09 0.12301787 0.033194152 -30.654430 49.936974 6589.1083 3.1042112e+09 0.12100155 0.032831206 -30.762267 49.810048 6591.0550 2.9446637e+09 0.11843675 0.029139834 -30.858302 49.696551 6593.0018 2.8121412e+09 0.11617561 0.027100576 -30.956728 49.579470 6594.9485 2.6827536e+09 0.11354463 0.025651828 -31.068771 49.441963 6596.8953 2.5333607e+09 0.11072833 0.025723203 -31.180815 49.304455 6598.8420 2.3769958e+09 0.10861542 0.025005147 -31.292860 49.166946 6600.7888 2.2267463e+09 0.10819952 0.026611490 -31.400375 49.033804 6602.7356 2.1065665e+09 0.10687964 0.026888944 -31.492045 48.915942 6604.6823 2.0124688e+09 0.10528937 0.026476407 -31.583716 48.798081 6606.6291 1.9215016e+09 0.10379536 0.026373557 -31.689619 48.661919 6608.5758 1.8220927e+09 0.10069253 0.023717147 -31.796570 48.524410 6610.5226 1.7024534e+09 0.097565742 0.024502288 -31.903521 48.386900 6612.4693 1.5958673e+09 0.095495167 0.023970085 -32.010353 48.249544 6614.4161 1.5134630e+09 0.093951282 0.023653824 -32.102076 48.131616 6616.3628 1.4480368e+09 0.092162369 0.023339247 -32.193747 48.013755 6618.3096 1.3844204e+09 0.091511438 0.024004581 -32.292686 47.881873 6620.2564 1.3084037e+09 0.091100132 0.024849808 -32.394543 47.744364 6622.2031 1.2384339e+09 0.090195103 0.024703931 -32.485485 47.624867 6624.1499 1.1785111e+09 0.088702096 0.024942534 -32.572790 47.511372 6626.0966 1.1300157e+09 0.087794558 0.026467794 -32.666770 47.386860 6628.0434 1.0787304e+09 0.086427058 0.025720709 -32.768608 47.249379 6629.9901 1.0170690e+09 0.085427631 0.025930085 -32.870457 47.111883 6631.9369 9.5765998e+08 0.083993212 0.026025935 -32.972315 46.974375 6633.8837 9.0249336e+08 0.082846496 0.026306529 -33.064112 46.847315 6635.8304 8.5659709e+08 0.081635646 0.026524320 -33.147050 46.729454 6637.7772 8.1686815e+08 0.080719756 0.025780781 -33.233322 46.606856 6639.7239 7.7120628e+08 0.080462949 0.025369329 -33.330090 46.469346 6641.6707 7.2831045e+08 0.080797362 0.025150578 -33.423019 46.337289 6643.6174 6.9151932e+08 0.080054342 0.025285843 -33.505958 46.219428 6645.5642 6.6069232e+08 0.079136817 0.025715986 -33.588897 46.101566 6647.5109 6.3092094e+08 0.078111703 0.026706795 -33.685478 45.964321 6649.4577 5.9493671e+08 0.077183457 0.027002769 -33.781820 45.827269 6651.4045 5.6321917e+08 0.076739884 0.026794124 -33.860395 45.709408 6653.3512 5.3731958e+08 0.076217979 0.027704979 -33.938969 45.591546 6655.2980 5.1784622e+08 0.074766510 0.027733338 -34.027136 45.459296 6657.2447 4.9437068e+08 0.073001208 0.029184986 -34.118809 45.321787 6659.1915 4.6597596e+08 0.071588019 0.031794655 -34.200411 45.199384 6661.1382 4.4275542e+08 0.070435569 0.032605358 -34.278985 45.081522 6663.0850 4.1938666e+08 0.069518916 0.032459658 -34.363812 44.954282 6665.0318 3.9982045e+08 0.069093245 0.028495104 -34.455467 44.816799 6666.9785 3.7900509e+08 0.068783822 0.027099270 -34.540397 44.689404 6668.9253 3.6092913e+08 0.067620982 0.028289567 -34.618971 44.571543 6670.8720 3.4433651e+08 0.067673836 0.026924639 -34.699333 44.449294 6672.8188 3.2769079e+08 0.067254197 0.027354177 -34.785912 44.311785 6674.7655 3.0701776e+08 0.065868768 0.029600569 -34.869277 44.179381 6676.7123 2.9038897e+08 0.063604869 0.032172790 -34.943487 44.061519 6678.6590 2.7765184e+08 0.062664600 0.030495816 -35.017697 43.943658 6680.6058 2.6587694e+08 0.063058914 0.029572234 -35.103891 43.806759 6682.5526 2.5192994e+08 0.063306785 0.030846719 -35.190365 43.669416 6684.4993 2.3730587e+08 0.062906762 0.032679430 -35.264612 43.551497 6686.4461 2.2641153e+08 0.061500039 0.034020615 -35.338822 43.433637 6688.3928 2.1599549e+08 0.058685003 0.033875868 -35.418233 43.301735 6690.3396 2.0552238e+08 0.056824929 0.033076947 -35.499720 43.164225 6692.2863 1.9077376e+08 0.055382037 0.032432820 -35.575740 43.041473 6694.2331 1.8039141e+08 0.054072124 0.030934330 -35.649948 42.923612 6696.1799 1.7342556e+08 0.053513041 0.029750510 -35.727506 42.796707 6698.1266 1.6810274e+08 0.052384098 0.030391602 -35.808993 42.659198 6700.0734 1.5886963e+08 0.050509983 0.030722135 -35.884695 42.531449 6702.0201 1.5097368e+08 0.048613641 0.032892797 -35.954539 42.413588 6703.9669 1.4170640e+08 0.048619171 0.036094670 -36.024382 42.295726 6705.9136 1.3568605e+08 0.048519105 0.038292862 -36.094226 42.177865 6707.8604 1.3149261e+08 0.048226997 0.040063576 -36.164070 42.060004 6709.8071 1.2285768e+08 0.047023771 0.040619159 -36.244555 41.924186 6711.7539 1.1695303e+08 0.045071070 0.041549967 -36.326028 41.786704 6713.7007 1.0732349e+08 0.042792408 0.046220756 -36.392286 41.667885 6715.6474 1.0261511e+08 0.041129249 0.048040746 -36.457763 41.550024 6717.5942 1.0073637e+08 0.039353010 0.049837516 -36.530451 41.419189 6719.5409 97762645. 0.037658719 0.050855918 -36.606845 41.281682 6721.4877 95937990. 0.037709699 0.050450841 -36.678674 41.157865 6723.4344 92634248. 0.035570622 0.049611239 -36.748518 41.040004 6725.3812 83880781. 0.029389186 0.041337905 -36.821021 40.914164 6727.3280 77165162. 0.024317731 0.040523459 -36.897413 40.776655 6729.2747 68666427. 0.014018681 0.040862327 -36.968976 40.647841 6731.2215 64832308. -0.040315764 0.042190782 -37.034455 40.529980 6733.1682 64536807. 0.0031724666 0.044837631 -37.100818 40.409138 6735.1150 61752113. 0.097619534 0.049415490 -37.172119 40.271628