# # 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 = 44.933784 km # Date (UTC) = 2010-12-10T10:22:09.026 # Date (julian) = 2455540.93204891 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.4117 6.1579018e+10 0.10513432 0.035724372 96.054842 34.809288 6514.0857 5.2378291e+10 0.11773437 0.036530703 96.133537 34.667638 6516.7596 4.4778142e+10 0.13056722 0.037337034 96.209529 34.536423 6519.4336 3.8801905e+10 0.14375280 0.038143365 96.284150 34.410497 6522.1076 3.4114233e+10 0.15702247 0.038945426 96.360887 34.276402 6524.7816 3.0005483e+10 0.16385561 0.039704618 96.439582 34.134754 6527.4556 2.6423703e+10 0.16865376 0.041047206 96.512913 34.002761 6530.1295 2.3461134e+10 0.17272894 0.044010035 96.582863 33.876852 6532.8035 2.1124962e+10 0.17549416 0.047355438 96.655000 33.750943 6535.4775 1.9178785e+10 0.17600853 0.048017165 96.729610 33.625034 6538.1515 1.7342275e+10 0.17667968 0.049230436 96.803844 33.494014 6540.8254 1.5628965e+10 0.17620258 0.051244063 96.877292 33.352363 6543.4994 1.4070792e+10 0.17497115 0.051512969 96.949280 33.217294 6546.1734 1.2774744e+10 0.17326012 0.052607206 97.019239 33.091369 6548.8474 1.1674073e+10 0.17157840 0.053920702 97.091596 32.961128 6551.5214 1.0625859e+10 0.16944692 0.055418755 97.170291 32.819477 6554.1953 9.6409348e+09 0.16572499 0.054836479 97.244047 32.685342 6556.8693 8.7557604e+09 0.16087827 0.053885320 97.309333 32.564098 6559.5433 8.0513706e+09 0.15479289 0.052325859 97.375663 32.441808 6562.2173 7.4895992e+09 0.14895391 0.050673164 97.445614 32.315899 6564.8912 6.9560408e+09 0.14433767 0.048367684 97.515842 32.188738 6567.5652 6.4020626e+09 0.14130740 0.046139275 97.589290 32.047088 6570.2392 5.8574709e+09 0.13903169 0.044818423 97.661324 31.908164 6572.9132 5.3634986e+09 0.13651262 0.043707200 97.726618 31.782239 6575.5872 4.9408163e+09 0.13353368 0.041785601 97.792152 31.655852 6578.2611 4.5481105e+09 0.13038720 0.038237246 97.865599 31.514202 6580.9351 4.1650611e+09 0.12715465 0.035656570 97.938042 31.375065 6583.6091 3.8136381e+09 0.12467714 0.034713369 98.003328 31.253819 6586.2831 3.5220441e+09 0.12196112 0.033167637 98.068614 31.132573 6588.9571 3.2935274e+09 0.11936636 0.033060320 98.133900 31.006764 6591.6310 3.0777229e+09 0.11603809 0.028489866 98.199186 30.880855 6594.3050 2.8492501e+09 0.11277493 0.026005089 98.271281 30.741812 6596.9790 2.6185906e+09 0.10926324 0.025722823 98.344729 30.600162 6599.6530 2.4094027e+09 0.10712998 0.024969003 98.406282 30.477438 6602.3269 2.2318049e+09 0.10588776 0.027237633 98.466915 30.356175 6605.0009 2.0754983e+09 0.10404775 0.026665817 98.537597 30.218926 6607.6749 1.9189957e+09 0.10135703 0.024374321 98.611045 30.077276 6610.3489 1.7744743e+09 0.096927310 0.024336324 98.673231 29.949448 6613.0229 1.6452089e+09 0.094203475 0.023581977 98.733852 29.823539 6615.6968 1.5259032e+09 0.091605361 0.023272971 98.803884 29.689931 6618.3708 1.4120902e+09 0.090022355 0.024050804 98.877331 29.553527 6621.0448 1.3077496e+09 0.088754005 0.025074600 98.940165 29.425808 6623.7188 1.2220698e+09 0.086860425 0.024758119 99.000787 29.299898 6626.3927 1.1395583e+09 0.085636106 0.026090506 99.066595 29.166806 6629.0667 1.0600953e+09 0.084392325 0.026097041 99.134810 29.030382 6631.7407 9.8381537e+08 0.082910350 0.026006006 99.197122 28.902131 6634.4147 9.1726515e+08 0.081650934 0.026357092 99.257744 28.776222 6637.0887 8.6152079e+08 0.080313624 0.026117988 99.323165 28.643671 6639.7626 8.0567274e+08 0.080116617 0.025355490 99.391369 28.507268 6642.4366 7.5326676e+08 0.080535628 0.025169563 99.450672 28.378491 6645.1106 7.0300400e+08 0.079663829 0.025503495 99.506630 28.252582 6647.7846 6.5488875e+08 0.078569507 0.026850862 99.569720 28.120562 6650.4586 6.0731959e+08 0.077896822 0.026360213 99.637924 27.984158 6653.1325 5.6533604e+08 0.077548112 0.027593327 99.701006 27.854840 6655.8065 5.3077073e+08 0.075785929 0.027943468 99.761635 27.728914 6658.4805 5.0019125e+08 0.073945486 0.030913234 99.823504 27.597413 6661.1545 4.6824975e+08 0.072297287 0.032613623 99.886460 27.461009 6663.8284 4.3752587e+08 0.070730293 0.032253630 99.945035 27.331175 6666.5024 4.0964454e+08 0.070670865 0.027006499 100.00099 27.205265 6669.1764 3.8805763e+08 0.069370496 0.028174526 100.06285 27.074301 6671.8504 3.6781186e+08 0.069329929 0.026877467 100.13105 26.937897 6674.5244 3.4486315e+08 0.068096076 0.029397122 100.19624 26.801494 6677.1983 3.2411300e+08 0.065601765 0.032076262 100.25919 26.665092 6679.8723 3.0517560e+08 0.065701454 0.029546930 100.31746 26.535714 6682.5463 2.8934099e+08 0.066805272 0.030841932 100.37342 26.409805 6685.2203 2.7103229e+08 0.066996571 0.032937498 100.43305 26.278385 6687.8942 2.5458764e+08 0.064792152 0.033844168 100.49601 26.141981 6690.5682 2.3562322e+08 0.062832488 0.033050744 100.55897 26.005564 6693.2422 2.1891542e+08 0.061962039 0.031520997 100.62193 25.869140 6695.9162 2.0603891e+08 0.061606024 0.029691181 100.67991 25.743540 6698.5902 1.9236081e+08 0.060547187 0.031027883 100.73587 25.622294 6701.2641 1.8302897e+08 0.058462633 0.031797016 100.79580 25.492428 6703.9381 1.7265015e+08 0.058449996 0.036022708 100.85876 25.356024 6706.6121 1.6386470e+08 0.058375270 0.039511712 100.91823 25.216145 6709.2861 1.5628528e+08 0.057588855 0.040950585 100.97594 25.074496 6711.9601 1.4720919e+08 0.055191977 0.041784511 101.03762 24.936814 6714.6340 1.3804391e+08 0.052728358 0.047351075 101.10058 24.800410 6717.3080 1.2905084e+08 0.050267042 0.049855217 101.15908 24.664006 6719.9820 1.2140567e+08 0.048499912 0.050436878 101.21679 24.527602 6722.6560 1.1367627e+08 0.048027091 0.049794258 101.27945 24.391199 6725.3299 1.0667740e+08 0.043318643 0.041369919 101.34195 24.255373 6728.0039 99254626. 0.042013015 0.039633662 101.39326 24.134111 6730.6779 95107188. 0.040176539 0.041308390 101.44456 24.012849 6733.3519 92193986. 0.038547470 0.045834770 101.50628 23.878049 6736.0259 85584283. 0.039655230 0.050452768 101.56924 23.741645 6738.6998 80812640. 0.040856915 0.061174018 101.62701 23.605241 6741.3738 76130086. 0.039292853 0.066824835 101.68472 23.468837 6744.0478 73121217. 0.033928057 0.077830379 101.74243 23.332434 6746.7218 69985641. 0.029910168 0.070595869 101.80014 23.196030 6749.3958 66217131. 0.027814726 0.072169576 101.85785 23.059626 6752.0697 62852229. 0.023415006 0.074053787 101.91556 22.923223 6754.7437 60409560. 0.021556409 0.075017497 101.97327 22.786820 6757.4177 59210310. 0.018716990 0.075472492 102.03098 22.650417 6760.0917 56225122. 0.018996872 0.076236070 102.08869 22.514012 6762.7656 55050883. 0.022676824 0.076815802 102.15017 22.371436 6765.4396 52261335. 0.022329884 0.079611447 102.21613 22.221539 6768.1136 48914909. -0.00056895003 0.081264780 102.27557 22.082296 6770.7876 47477218. 0.010259583 0.088789921 102.33327 21.945893 6773.4616 46249839. 0.042534500 0.095275494 102.38636 21.809471