# # 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 = 39.729723 km # Date (UTC) = 2010-12-13T10:41:57.777 # Date (julian) = 2455543.94580760 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.2206 6.5542879e+11 0.018409904 0.029334267 -46.150130 46.014026 6492.3604 5.2918341e+11 0.026341534 0.029979499 -46.240930 45.913489 6494.5001 4.0088847e+11 0.034276846 0.030624730 -46.333287 45.808535 6496.6398 3.0975441e+11 0.041760356 0.031269962 -46.425246 45.704295 6498.7796 2.4228692e+11 0.048735778 0.031915194 -46.511086 45.610992 6500.9193 1.8895677e+11 0.055247062 0.032560426 -46.596925 45.517690 6503.0590 1.5384856e+11 0.061416343 0.033205658 -46.681335 45.422968 6505.1988 1.2584172e+11 0.067487071 0.033850889 -46.763430 45.325947 6507.3385 1.0527997e+11 0.073826233 0.034496121 -46.845524 45.228926 6509.4783 8.9630805e+10 0.080791322 0.035141353 -46.934823 45.126337 6511.6180 7.6612129e+10 0.088569543 0.035786585 -47.027182 45.021384 6513.7577 6.6483367e+10 0.097600183 0.036431817 -47.116259 44.918968 6515.8975 5.8346895e+10 0.10808553 0.037077048 -47.198354 44.821945 6518.0372 5.1744545e+10 0.12014279 0.037722280 -47.280450 44.724923 6520.1769 4.6248387e+10 0.13375104 0.038367512 -47.362552 44.630281 6522.3167 4.1679962e+10 0.14790747 0.039000176 -47.444657 44.536979 6524.4564 3.7548594e+10 0.15796956 0.039589103 -47.526762 44.443676 6526.5961 3.3859374e+10 0.16694395 0.040293078 -47.614685 44.339183 6528.7359 3.0316301e+10 0.17381069 0.042026261 -47.702847 44.234230 6530.8756 2.7095209e+10 0.17802623 0.045054550 -47.785340 44.133866 6533.0154 2.4554037e+10 0.18089881 0.047526113 -47.863703 44.036845 6535.1551 2.2455396e+10 0.18035419 0.048157018 -47.942067 43.939823 6537.2948 2.0710703e+10 0.17919330 0.048824225 -48.020430 43.846155 6539.4346 1.9167839e+10 0.17786701 0.050169659 -48.098794 43.752865 6541.5743 1.7674445e+10 0.17575684 0.051140288 -48.178383 43.656102 6543.7140 1.6173245e+10 0.17357872 0.051569296 -48.262346 43.546950 6545.8538 1.4728831e+10 0.17144598 0.052463216 -48.346308 43.437798 6547.9935 1.3400866e+10 0.17021569 0.053665178 -48.425593 43.341911 6550.1332 1.2257063e+10 0.16878773 0.055018723 -48.503967 43.248609 6552.2730 1.1279662e+10 0.16702024 0.055518057 -48.581752 43.154721 6554.4127 1.0410935e+10 0.16477512 0.054841041 -48.656384 43.057700 6556.5525 9.6583337e+09 0.16251085 0.053931904 -48.731017 42.960678 6558.6922 8.9912321e+09 0.15986200 0.052649472 -48.805649 42.865439 6560.8319 8.4125630e+09 0.15667873 0.051524219 -48.880281 42.772149 6562.9717 7.8704834e+09 0.15372897 0.049955329 -48.954913 42.678859 6565.1114 7.3262294e+09 0.15068888 0.048191900 -49.036989 42.572915 6567.2511 6.7772161e+09 0.14773310 0.046404845 -49.120950 42.463764 6569.3909 6.2316841e+09 0.14486478 0.044877864 -49.199481 42.361209 6571.5306 5.7676761e+09 0.14208175 0.044358355 -49.270382 42.267919 6573.6703 5.3800789e+09 0.13839571 0.043119545 -49.341283 42.174629 6575.8101 5.0508798e+09 0.13460852 0.041561941 -49.412191 42.078582 6577.9498 4.7609549e+09 0.13100797 0.038728438 -49.483100 41.981547 6580.0896 4.4737083e+09 0.12781955 0.036437992 -49.554748 41.884064 6582.2293 4.1810484e+09 0.12532911 0.035231399 -49.638711 41.779111 6584.3690 3.8803011e+09 0.12321340 0.034314488 -49.722673 41.674158 6586.5088 3.5963985e+09 0.12125589 0.033164719 -49.795308 41.574555 6588.6485 3.3509390e+09 0.11947245 0.033163362 -49.862477 41.477534 6590.7882 3.1497578e+09 0.11694997 0.029595825 -49.929657 41.380523 6592.9280 2.9798685e+09 0.11457646 0.027172182 -50.000526 41.287203 6595.0677 2.8286500e+09 0.11184491 0.025630593 -50.071426 41.193913 6597.2074 2.6720930e+09 0.10899117 0.025657266 -50.145118 41.096950 6599.3472 2.4970161e+09 0.10717221 0.024950611 -50.224884 40.991997 6601.4869 2.3203762e+09 0.10674030 0.027275000 -50.304649 40.887043 6603.6267 2.1593692e+09 0.10514745 0.026292297 -50.372672 40.789477 6605.7664 2.0273285e+09 0.10427261 0.027307983 -50.439849 40.692442 6607.9061 1.9136204e+09 0.10177570 0.023917738 -50.507025 40.596355 6610.0459 1.8094524e+09 0.098320565 0.024046798 -50.574192 40.503065 6612.1856 1.7165699e+09 0.095484677 0.024182080 -50.641360 40.409775 6614.3253 1.6207605e+09 0.093900546 0.023716350 -50.713345 40.307387 6616.4651 1.5217803e+09 0.091903176 0.023355292 -50.788912 40.198237 6618.6048 1.4220439e+09 0.090736662 0.024227497 -50.862869 40.092125 6620.7445 1.3327918e+09 0.089397299 0.025007126 -50.930038 39.998835 6622.8843 1.2613487e+09 0.087436729 0.024522627 -50.997207 39.905545 6625.0240 1.1889085e+09 0.085723445 0.025426262 -51.066526 39.804136 6627.1638 1.1153473e+09 0.083689432 0.025380065 -51.137894 39.694984 6629.3035 1.0406048e+09 0.082895946 0.026054233 -51.208719 39.587889 6631.4432 9.7671085e+08 0.081533758 0.025975788 -51.275897 39.494587 6633.5830 9.2540328e+08 0.080421727 0.026254032 -51.343075 39.401285 6635.7227 8.7627364e+08 0.079184081 0.026508167 -51.412139 39.302736 6637.8624 8.2053557e+08 0.078379093 0.025739018 -51.483507 39.197783 6640.0022 7.6558065e+08 0.078489834 0.025270387 -51.554332 39.093372 6642.1419 7.1569118e+08 0.078788070 0.025157503 -51.617771 38.996350 6644.2816 6.7443204e+08 0.077953547 0.025374046 -51.681209 38.899329 6646.4214 6.4706185e+08 0.076997527 0.026138266 -51.744646 38.803757 6648.5611 6.1997939e+08 0.075952517 0.027339896 -51.808083 38.710467 6650.7009 5.8941880e+08 0.075507809 0.026415681 -51.871519 38.617177 6652.8406 5.5882455e+08 0.075173831 0.027481800 -51.940577 38.515622 6654.9803 5.2607210e+08 0.074115115 0.027618599 -52.011946 38.410669 6657.1201 4.9431806e+08 0.072294319 0.029040376 -52.079508 38.308303 6659.2598 4.6742371e+08 0.070832928 0.031780405 -52.139221 38.211269 6661.3995 4.4200734e+08 0.069520054 0.032738440 -52.198935 38.114235 6663.5393 4.1863055e+08 0.068253330 0.032333768 -52.266191 38.012075 6665.6790 3.9642181e+08 0.068037380 0.027434558 -52.337558 37.907122 6667.8187 3.7232810e+08 0.067407755 0.027404195 -52.407813 37.801055 6669.9585 3.4914912e+08 0.066798066 0.027371280 -52.474983 37.691903 6672.0982 3.2640694e+08 0.066645645 0.026936525 -52.542153 37.582751 6674.2379 3.0630799e+08 0.065910316 0.029155517 -52.602730 37.487608 6676.3777 2.9015515e+08 0.063929284 0.031957140 -52.662436 37.394318 6678.5174 2.7536984e+08 0.063330313 0.030590540 -52.723659 37.298656 6680.6572 2.6526801e+08 0.064196048 0.029583324 -52.790829 37.193703 6682.7969 2.4750500e+08 0.065105892 0.031033400 -52.857999 37.088750 6684.9366 2.2953627e+08 0.065263189 0.032701622 -52.919038 36.993376 6687.0764 2.1668743e+08 0.063772872 0.034300310 -52.978744 36.900086 6689.2161 2.0248043e+08 0.061320721 0.033821497 -53.038913 36.804548 6691.3558 1.9339856e+08 0.060554622 0.032917308 -53.101895 36.695381 6693.4956 1.8001143e+08 0.059844147 0.031434076 -53.164877 36.586214 6695.6353 1.6850341e+08 0.059671411 0.029742775 -53.231041 36.480250 6697.7750 1.6004935e+08 0.059084363 0.030189349 -53.298211 36.375297 6699.9148 1.5301322e+08 0.057680639 0.030746349 -53.361151 36.274751 6702.0545 1.4861210e+08 0.056077744 0.032920265 -53.417125 36.181461 6704.1943 1.4046836e+08 0.056549701 0.036272943 -53.473100 36.088171 6706.3340 1.3588526e+08 0.056538513 0.039027692 -53.536889 35.986740 6708.4737 1.2748953e+08 0.056202140 0.040559452 -53.604059 35.881787 6710.6135 1.2434086e+08 0.054818856 0.040616573 -53.669902 35.775506 6712.7532 1.2146096e+08 0.052885594 0.043228402 -53.732873 35.666354 6714.8929 1.1568340e+08 0.050987099 0.047370540 -53.795844 35.557201 6717.0327 1.1232328e+08 0.049057145 0.049872247 -53.858817 35.451971 6719.1724 1.0548944e+08 0.047019255 0.051206036 -53.921789 35.347018 6721.3121 1.0071954e+08 0.047580841 0.050397950 -53.978842 35.248496 6723.4519 94465724. 0.046347806 0.049620967 -54.031091 35.155194 6725.5916 88785731. 0.042490659 0.041206464 -54.083340 35.061892 6727.7314 84574667. 0.041667678 0.039986012 -54.144946 34.958424 6729.8711 81087124. 0.040744286 0.040464823 -54.207919 34.853471 6732.0108 78655693. 0.039195077 0.043742202 -54.270890 34.746458 6734.1506 77142441. 0.038460311 0.049344541 -54.333862 34.637307 6736.2903 75064525. 0.040216455 0.051452502 -54.396377 34.528612 6738.4300 70187201. 0.041127119 0.059688638 -54.455151 34.423659 6740.5698 65320321. 0.039550351 0.065023720 -54.513924 34.318706 6742.7095 58454555. 0.030025295 0.070339603 -54.572697 34.213753 6744.8492 54572348. 0.031694213 0.078450281 -54.631471 34.108800 6746.9890 53037215. 0.039537462 0.067489267 -54.691691 34.003847