# # 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 = 50.357986 km # Date (UTC) = 2015-01-09T09:18:53.259 # Date (julian) = 2457031.88811642 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.0295 5.5484942e+10 0.046626969 0.032593646 -19.292870 50.281787 6503.2242 5.1558821e+10 0.054918623 0.033255443 -19.396210 50.186102 6505.4188 4.7990237e+10 0.063519925 0.033917240 -19.499562 50.090400 6507.6135 4.4578552e+10 0.072433151 0.034579037 -19.611466 49.982821 6509.8082 4.1517954e+10 0.081783519 0.035240834 -19.723420 49.875174 6512.0028 3.8582433e+10 0.091546711 0.035902631 -19.832485 49.767516 6514.1975 3.6039312e+10 0.10187672 0.036564429 -19.940148 49.659852 6516.3922 3.3895739e+10 0.11283606 0.037226226 -20.049319 49.552194 6518.5868 3.1654821e+10 0.12418559 0.037888023 -20.161272 49.444546 6520.7815 2.9532252e+10 0.13599818 0.038549820 -20.273102 49.336898 6522.9762 2.7536416e+10 0.14558876 0.039172876 -20.380750 49.229251 6525.1709 2.5668666e+10 0.15243564 0.039762716 -20.488397 49.121604 6527.3655 2.3851864e+10 0.15786570 0.040981846 -20.596045 49.013956 6529.5602 2.2153051e+10 0.16254979 0.043128126 -20.703693 48.906308 6531.7549 2.0453350e+10 0.16682095 0.046327395 -20.809687 48.797007 6533.9495 1.8917440e+10 0.16953219 0.047923111 -20.913028 48.685054 6536.1442 1.7514616e+10 0.17060532 0.047919527 -21.016370 48.573367 6538.3389 1.6134779e+10 0.17276701 0.049321696 -21.119711 48.465719 6540.5335 1.4894683e+10 0.17313573 0.051106164 -21.223053 48.358072 6542.7282 1.3769470e+10 0.17179435 0.051278710 -21.317905 48.259267 6544.9229 1.2870407e+10 0.17048322 0.052393012 -21.409763 48.163582 6547.1176 1.2126299e+10 0.16838829 0.053332070 -21.503075 48.066382 6549.3122 1.1406238e+10 0.16625454 0.054284466 -21.606432 47.958718 6551.5069 1.0685276e+10 0.16474438 0.055413681 -21.709789 47.851055 6553.7016 9.9545513e+09 0.16288559 0.054982397 -21.809670 47.743404 6555.8962 9.2545924e+09 0.16086386 0.054100309 -21.908705 47.635756 6558.0909 8.5872647e+09 0.15931401 0.053161838 -22.007741 47.526032 6560.2856 7.9567021e+09 0.15707918 0.052016821 -22.106778 47.414078 6562.4803 7.3930235e+09 0.15472901 0.050422927 -22.205126 47.302811 6564.6749 6.8851626e+09 0.15250217 0.048465723 -22.299856 47.195163 6566.8696 6.4124907e+09 0.15071107 0.046690959 -22.394586 47.087516 6569.0643 5.9624034e+09 0.14896117 0.044856607 -22.492921 46.979868 6571.2589 5.5406172e+09 0.14781496 0.044432556 -22.591956 46.872221 6573.4536 5.1760833e+09 0.14602142 0.043293476 -22.683355 46.768762 6575.6483 4.8860221e+09 0.14381994 0.041724286 -22.767558 46.669250 6577.8429 4.6392551e+09 0.14132227 0.038896311 -22.851762 46.569738 6580.0376 4.4032361e+09 0.13860733 0.036485992 -22.945461 46.462887 6582.2323 4.1657719e+09 0.13588267 0.035230584 -23.040191 46.355239 6584.4270 3.9195229e+09 0.13319005 0.034282932 -23.134921 46.247591 6586.6216 3.6957194e+09 0.13040483 0.033163261 -23.229650 46.139944 6588.8163 3.4913189e+09 0.12773563 0.033107326 -23.323275 46.031183 6591.0110 3.2922901e+09 0.12468715 0.029189535 -23.413713 45.919212 6593.2056 3.1091911e+09 0.12240277 0.026911041 -23.504151 45.807241 6595.4003 2.9222767e+09 0.12003206 0.025665084 -23.594575 45.699314 6597.5950 2.7488292e+09 0.11805889 0.025534975 -23.684999 45.591667 6599.7896 2.6058055e+09 0.11718188 0.024977223 -23.769264 45.491351 6601.9843 2.4889014e+09 0.11679267 0.027509248 -23.849640 45.395666 6604.1790 2.3946483e+09 0.11529179 0.026177554 -23.930041 45.299940 6606.3737 2.2977958e+09 0.11465884 0.026832509 -24.020442 45.188025 6608.5683 2.1927536e+09 0.11191726 0.023717345 -24.110865 45.076072 6610.7630 2.0792095e+09 0.10883787 0.024732008 -24.198371 44.967037 6612.9577 1.9687687e+09 0.10751990 0.023605217 -24.284489 44.859389 6615.1523 1.8670542e+09 0.10612616 0.023256219 -24.370608 44.750211 6617.3470 1.7683491e+09 0.10475456 0.023554300 -24.456726 44.638257 6619.5417 1.6748372e+09 0.10389001 0.024656613 -24.542844 44.526445 6621.7364 1.5790337e+09 0.10265154 0.024845380 -24.628962 44.418797 6623.9310 1.4894202e+09 0.10054851 0.024836755 -24.715080 44.311149 6626.1257 1.4116993e+09 0.099069814 0.026430760 -24.794404 44.211993 6628.3204 1.3518240e+09 0.096966781 0.025833166 -24.870963 44.116296 6630.5150 1.3011374e+09 0.094882860 0.025929571 -24.948037 44.019001 6632.7097 1.2501816e+09 0.092827043 0.026117444 -25.029849 43.907048 6634.9044 1.1951998e+09 0.090817866 0.026392812 -25.111660 43.795096 6637.0990 1.1361994e+09 0.088849281 0.026112903 -25.196813 43.686483 6639.2937 1.0823039e+09 0.087747830 0.025523094 -25.282931 43.578836 6641.4884 1.0320615e+09 0.088205162 0.025149959 -25.367097 43.469235 6643.6831 9.8537850e+08 0.087519555 0.025295752 -25.448910 43.357280 6645.8777 9.3762339e+08 0.086659759 0.025862867 -25.530723 43.245890 6648.0724 8.8727320e+08 0.085834217 0.027012747 -25.612534 43.138242 6650.2671 8.4295697e+08 0.085215857 0.026316376 -25.694346 43.030595 6652.4617 7.9987356e+08 0.084808445 0.027377564 -25.772676 42.922947 6654.6564 7.6500407e+08 0.083844090 0.027756590 -25.850182 42.815300 6656.8511 7.3083590e+08 0.081928098 0.028770404 -25.929782 42.705559 6659.0457 6.9451356e+08 0.080340032 0.031825055 -26.011595 42.593606 6661.2404 6.5894074e+08 0.079021017 0.032657400 -26.092701 42.482359 6663.4351 6.2735609e+08 0.077684541 0.032362639 -26.170208 42.374711 6665.6298 5.9916192e+08 0.077290159 0.027515246 -26.247715 42.267063 6667.8244 5.6849385e+08 0.076569813 0.027406285 -26.325231 42.159402 6670.0191 5.4067536e+08 0.075823023 0.027319784 -26.402749 42.051738 6672.2138 5.1220707e+08 0.075399194 0.027003505 -26.475787 41.948309 6674.4084 4.9209827e+08 0.074107045 0.029299338 -26.544680 41.848797 6676.6031 4.7542099e+08 0.071551693 0.032102426 -26.613574 41.749286 6678.7978 4.5567319e+08 0.070463863 0.030403023 -26.690276 41.642397 6680.9925 4.3710636e+08 0.071098907 0.029655729 -26.767781 41.534750 6683.1871 4.1624269e+08 0.071369577 0.031462812 -26.842771 41.424586 6685.3818 3.9534320e+08 0.070774210 0.033108106 -26.915971 41.312631 6687.5765 3.7677777e+08 0.068456700 0.034021400 -26.990299 41.201805 6689.7711 3.5871986e+08 0.066045668 0.033321879 -27.067806 41.094157 6691.9658 3.4333688e+08 0.064885281 0.032773397 -27.145313 40.986509 6694.1605 3.2496343e+08 0.063915851 0.031036112 -27.218774 40.878861 6696.3551 3.1068183e+08 0.063602458 0.029823341 -27.291974 40.771214 6698.5498 2.9683031e+08 0.062386004 0.030972503 -27.365174 40.660909 6700.7445 2.8223644e+08 0.060411730 0.031219925 -27.438375 40.548957 6702.9392 2.6914934e+08 0.059660407 0.033626651 -27.511575 40.438273 6705.1338 2.5195644e+08 0.059554649 0.036906524 -27.584775 40.330626 6707.3285 2.4075985e+08 0.058871134 0.040139769 -27.657976 40.222978 6709.5232 2.3099661e+08 0.057697383 0.040799783 -27.736561 40.100374 6711.7178 2.2245161e+08 0.055314655 0.041508936 -27.815300 39.977345 6713.9125 2.1140809e+08 0.052707330 0.046986972 -27.888841 39.864714 6716.1072 1.9871657e+08 0.050465197 0.048559225 -27.962052 39.752743 6718.3018 1.8833892e+08 0.047732818 0.050282522 -28.032594 39.643445 6720.4965 1.7708671e+08 0.046585552 0.050362236 -28.101489 39.535798 6722.6912 1.7053399e+08 0.045474192 0.049750713 -28.170383 39.428150 6724.8859 1.6113016e+08 0.040820106 0.042529154 -28.239277 39.320503 6727.0805 1.5428859e+08 0.038300906 0.040853095 -28.308171 39.212855 6729.2752 1.5129561e+08 0.037319900 0.040861998 -28.377066 39.101017 6731.4699 1.4696809e+08 0.034931500 0.042685157 -28.445960 38.989064 6733.6645 1.4456959e+08 0.033323949 0.047532303 -28.514855 38.879914 6735.8592 1.4051224e+08 0.034115777 0.050205550 -28.583749 38.772266 6738.0539 1.3622028e+08 0.034961966 0.057617743 -28.652644 38.664618 6740.2486 1.3483583e+08 0.034366351 0.064474973 -28.721539 38.556971 6742.4432 1.2842089e+08 0.031013903 0.069690750 -28.790465 38.449196 6744.6379 1.2441921e+08 0.026525455 0.078286807 -28.864282 38.321245 6746.8326 1.1862967e+08 0.021779520 0.069307780 -28.938099 38.193295 6749.0272 1.1078965e+08 0.020285700 0.072270476 -29.007120 38.085124 6751.2219 1.0532055e+08 0.016285558 0.073805494 -29.076014 37.977477 6753.4166 95783902. 0.012442823 0.074325406 -29.142102 37.869829 6755.6112 94672996. 0.010105261 0.074337353 -29.206691 37.762181 6757.8059 93438467. 0.0087272917 0.074294313 -29.271279 37.654533 6760.0006 93043746. 0.0094948474 0.076062391 -29.335868 37.546885 6762.1953 92080098. 0.013343369 0.077735878 -29.400521 37.439094 6764.3899 86476166. 0.015351419 0.079501966 -29.474338 37.311146 6766.5846 84567964. 0.015882926 0.081036120 -29.548155 37.183197 6768.7793 82078317. 0.011122917 0.083660019 -29.612984 37.075027 6770.9739 80912508. 0.0067940267 0.089241932 -29.677583 36.967363 6773.1686 76289614. 0.0016913643 0.094564972 -29.748201 36.849667 6775.3633 69466357. -0.0043347842 0.099888013 -29.822017 36.726639 6777.5580 65431327. -0.0098722767 0.10521105 -29.887430 36.613161 6779.7526 63084085. -0.015089223 0.11053409 -29.947713 36.505513 6781.9473 63572213. -0.019413389 0.11585713 -30.012035 36.391805 6784.1420 61437254. -0.025165930 0.12118018 -30.085853 36.263853 6786.3366 58947395. -0.031681251 0.12650322 -30.156064 36.141312 6788.5313 57845428. -0.038300759 0.13182626 -30.216347 36.033665 6790.7260 54042096. -0.048030180 0.13714930 -30.276630 35.926018 6792.9206 49163913. -0.061874775 0.14247234 -30.345044 35.803849 6795.1153 43434729. -0.085819785 0.14779538 -30.413939 35.680821 6797.3100 42690376. -0.15667030 0.15311842 -30.474979 35.571821 6799.5047 44755427. -0.10654557 0.15844146 -30.535262 35.464173 6806.0887 46026809. 0.0075293691 0.17441058 -30.733614 35.109975