# # 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 = 56.260764 km # Date (UTC) = 2015-01-27T10:47:34.139 # Date (julian) = 2457049.94970068 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6488.9229 6.4318662e+10 0.023073473 0.028942934 88.786096 49.906790 6491.1385 5.8952404e+10 0.029441487 0.029611060 88.930221 49.726689 6493.3542 5.5065260e+10 0.035389203 0.030279187 89.063536 49.564390 6495.5699 5.1589883e+10 0.041097430 0.030947313 89.211175 49.378504 6497.7855 4.7899769e+10 0.046566650 0.031615439 89.362187 49.181743 6500.0012 4.4083322e+10 0.051716915 0.032283565 89.508227 48.980067 6502.2168 4.0669254e+10 0.056564978 0.032951691 89.638509 48.811897 6504.4325 3.7731515e+10 0.061434140 0.033619817 89.768362 48.645515 6506.6482 3.5149550e+10 0.066696381 0.034287943 89.914437 48.450748 6508.8638 3.2771439e+10 0.072741974 0.034956069 90.043756 48.278323 6511.0795 3.0241251e+10 0.079757390 0.035624196 90.165480 48.116025 6513.2951 2.7834590e+10 0.088123676 0.036292322 90.303925 47.922509 6515.5108 2.5673803e+10 0.098296076 0.036960448 90.430855 47.744807 6517.7265 2.3603811e+10 0.11027921 0.037628574 90.546782 47.582505 6519.9421 2.1854893e+10 0.12438644 0.038296700 90.681254 47.388678 6522.1578 2.0324544e+10 0.14003896 0.038958565 90.811975 47.201230 6524.3734 1.8840581e+10 0.15145890 0.039559623 90.927905 47.038932 6526.5891 1.7413559e+10 0.16229615 0.040285677 91.058582 46.855985 6528.8047 1.6033366e+10 0.17074825 0.042080891 91.191907 46.667714 6531.0204 1.4694537e+10 0.17589381 0.045258381 91.302040 46.505414 6533.2361 1.3570626e+10 0.17916330 0.047619908 91.412173 46.340369 6535.4517 1.2710576e+10 0.17822486 0.048028340 91.522306 46.172275 6537.6674 1.2020371e+10 0.17760607 0.048999868 91.632435 46.008518 6539.8830 1.1322504e+10 0.17680174 0.050712529 91.742915 45.845461 6542.0987 1.0556996e+10 0.17425160 0.051039711 91.868123 45.650694 6544.3144 9.7627342e+09 0.17218115 0.051899364 91.984489 45.471568 6546.5300 8.9840333e+09 0.17032565 0.052900648 92.094600 45.303505 6548.7457 8.3565120e+09 0.16856726 0.053890331 92.199743 45.140401 6550.9613 7.8350738e+09 0.16695983 0.055226071 92.304078 44.978102 6553.1770 7.3654878e+09 0.16574197 0.055246093 92.408414 44.815803 6555.3927 6.9580704e+09 0.16380291 0.054523439 92.510374 44.653504 6557.6083 6.5622023e+09 0.16179511 0.053484813 92.608911 44.491203 6559.8240 6.1248255e+09 0.15946612 0.052294177 92.725705 44.301920 6562.0396 5.6794523e+09 0.15683081 0.050842189 92.844323 44.109939 6564.2553 5.2436425e+09 0.15401353 0.048655898 92.942841 43.947671 6566.4710 4.8820115e+09 0.15185205 0.046916468 93.041372 43.785386 6568.6866 4.6004107e+09 0.14973365 0.045140503 93.139914 43.623088 6570.9023 4.3590586e+09 0.14772072 0.044543758 93.238452 43.456174 6573.1179 4.1550366e+09 0.14526697 0.043562846 93.336990 43.288489 6575.3336 3.9591383e+09 0.14214485 0.042040013 93.435528 43.126190 6577.5492 3.7714344e+09 0.13887379 0.039357637 93.532063 42.963892 6579.7649 3.5855485e+09 0.13580015 0.036649994 93.624807 42.801593 6581.9806 3.4069278e+09 0.13346417 0.035299680 93.717549 42.635698 6584.1962 3.2304529e+09 0.13154406 0.034408620 93.810289 42.467602 6586.4119 3.0705274e+09 0.12981147 0.033165972 93.903017 42.304723 6588.6275 2.9173718e+09 0.12831740 0.033170360 93.995745 42.142449 6590.8432 2.7716505e+09 0.12609266 0.029493578 94.088485 41.980151 6593.0589 2.6336072e+09 0.12415567 0.027047497 94.181227 41.815275 6595.2745 2.5002512e+09 0.12177965 0.025652040 94.273972 41.647179 6597.4902 2.3810915e+09 0.11951691 0.025568045 94.362543 41.483253 6599.7058 2.2683085e+09 0.11840547 0.024972183 94.449486 41.320954 6601.9215 2.1622832e+09 0.11805066 0.027479663 94.542196 41.158656 6604.1372 2.0623870e+09 0.11658082 0.026152716 94.630041 41.002593 6606.3528 1.9881769e+09 0.11585789 0.026869963 94.704564 40.863482 6608.5685 1.9148235e+09 0.11296321 0.023717341 94.782270 40.716949 6610.7841 1.8408643e+09 0.10963896 0.024752202 94.869216 40.548855 6612.9998 1.7608704e+09 0.10819038 0.023573515 94.956152 40.383854 6615.2155 1.6689782e+09 0.10672219 0.023258161 95.043077 40.221585 6617.4311 1.5882854e+09 0.10530689 0.023582183 95.130020 40.059293 6619.6468 1.5162282e+09 0.10432372 0.024681969 95.216502 39.896994 6621.8624 1.4456303e+09 0.10286239 0.024803591 95.297651 39.734695 6624.0781 1.3763007e+09 0.10055553 0.024904111 95.380858 39.570339 6626.2937 1.3083030e+09 0.098968100 0.026216641 95.467805 39.402243 6628.5094 1.2455291e+09 0.097310645 0.025909919 95.543800 39.252401 6630.7251 1.1993928e+09 0.095717657 0.025930089 95.613354 39.113292 6632.9407 1.1566781e+09 0.094531548 0.026145146 95.690062 38.959876 6635.1564 1.1134203e+09 0.093240821 0.026423240 95.771211 38.797575 6637.3720 1.0689509e+09 0.092015664 0.025979196 95.852360 38.635277 6639.5877 1.0173839e+09 0.091687601 0.025418016 95.933506 38.472984 6641.8034 9.6877259e+08 0.092221647 0.025151028 96.014640 38.310716 6644.0190 9.2210420e+08 0.091378604 0.025345662 96.088478 38.156470 6646.2347 8.8395821e+08 0.090457989 0.026041625 96.153067 38.012392 6648.4503 8.5556583e+08 0.089315648 0.027265743 96.224746 37.860513 6650.6660 8.2115728e+08 0.088728922 0.026407703 96.305895 37.698214 6652.8817 7.9116700e+08 0.088246361 0.027493101 96.382969 37.535914 6655.0973 7.5515203e+08 0.086984925 0.027650428 96.458321 37.373614 6657.3130 7.1903949e+08 0.085082371 0.029264153 96.539341 37.211316 6659.5286 6.8650984e+08 0.083523400 0.031724325 96.616308 37.054873 6661.7443 6.5511967e+08 0.081996804 0.032914035 96.680897 36.915764 6663.9600 6.3119498e+08 0.080408435 0.032217186 96.748066 36.771096 6666.1756 6.1032750e+08 0.080256924 0.026942815 96.823418 36.608794 6668.3913 5.8796371e+08 0.079105011 0.027817022 96.898770 36.443512 6670.6069 5.6127706e+08 0.078637635 0.027047451 96.974122 36.275418 6672.8226 5.3487189e+08 0.078107342 0.027356387 97.044890 36.111923 6675.0382 5.1039418e+08 0.076424779 0.029871617 97.114118 35.951131 6677.2539 4.9203601e+08 0.074220439 0.031997262 97.178703 35.812022 6679.4696 4.7326853e+08 0.073935180 0.029879742 97.243542 35.671732 6681.6852 4.5921399e+08 0.074877961 0.030183053 97.313100 35.509434 6683.9009 4.3466041e+08 0.075324805 0.032508838 97.384545 35.347135 6686.1165 4.1438906e+08 0.074794359 0.033828891 97.459897 35.184834 6688.3322 3.9409497e+08 0.072244283 0.033861874 97.525801 35.036460 6690.5479 3.7849653e+08 0.070680996 0.033053078 97.585421 34.897350 6692.7635 3.6950035e+08 0.069723378 0.031878697 97.650882 34.744612 6694.9792 3.5586795e+08 0.069113404 0.029888653 97.720441 34.582314 6697.1948 3.3922460e+08 0.068578170 0.030115923 97.789995 34.420013 6699.4105 3.2012718e+08 0.067259667 0.031211659 97.859550 34.257713 6701.6262 3.0415145e+08 0.065507653 0.032328197 97.929108 34.095415 6703.8418 2.8977826e+08 0.065666840 0.035781729 97.994565 33.942683 6706.0575 2.8472223e+08 0.065569337 0.038546437 98.054171 33.803598 6708.2731 2.8000216e+08 0.065041165 0.040341012 98.117747 33.655250 6710.4888 2.7705546e+08 0.063475657 0.040592170 98.187306 33.492949 6712.7045 2.6980417e+08 0.061297212 0.043137893 98.252958 33.330649 6714.9201 2.5661717e+08 0.059242844 0.047372583 98.316719 33.168351 6717.1358 2.4645523e+08 0.057103300 0.049865870 98.376552 33.028049 6719.3514 2.4105569e+08 0.054973152 0.051035954 98.436171 32.888940 6721.5671 2.3410857e+08 0.055200178 0.050474766 98.499666 32.728130 6723.7827 2.2764902e+08 0.053361879 0.049805496 98.564646 32.567050 6725.9984 2.1344923e+08 0.049413561 0.040952362 98.634200 32.410550 6728.2141 1.9943380e+08 0.048809549 0.039931503 98.700942 32.251234 6730.4297 1.8957012e+08 0.047425213 0.040968109 98.764703 32.088934 6732.6454 1.8076858e+08 0.046126705 0.043859022 98.821539 31.944261 6734.8610 1.7702949e+08 0.046052764 0.049301793 98.876190 31.805151 6737.0767 1.7378319e+08 0.047824927 0.054379906 98.937639 31.648735 6739.2924 1.6846633e+08 0.048445491 0.063184348 99.001388 31.486467 6741.5080 1.6440090e+08 0.046869841 0.067207598 99.065148 31.324168 6743.7237 1.5787863e+08 0.042469084 0.075929370 99.128909 31.161869 6745.9393 1.4916367e+08 0.040998460 0.078961777 99.192670 30.999571 6748.1550 1.4423232e+08 0.036966041 0.067832354 99.248386 30.853360 6750.3707 1.3632957e+08 0.034356958 0.072637045 99.298067 30.719218 6752.5863 1.3516120e+08 0.031624568 0.073455998 99.355613 30.569349 6754.8020 1.3424438e+08 0.030067512 0.074923793 99.419373 30.407050 6757.0176 1.2780507e+08 0.027384982 0.076686538 99.483134 30.244750 6759.2333 1.2243315e+08 0.028559827 0.075876252 99.546269 30.082451 6761.4490 1.1485606e+08 0.030522930 0.078005317 99.604232 29.920151 6763.6646 1.0822656e+08 0.035094815 0.078461856 99.664410 29.760084 6765.8803 1.0351002e+08 0.037215743 0.079691890 99.728158 29.603612 6768.0959 99594160. 0.034378968 0.081201207 99.782659 29.458554 6770.3116 96909669. 0.029825228 0.087635443 99.832340 29.319445 6772.5272 96703081. 0.025873260 0.093009391 99.887359 29.165389 6774.7429 95276385. 0.021962054 0.098383338 99.945322 29.003089 6776.9586 91405581. 0.018120687 0.10375729 100.00329 28.846119 6779.1742 87118211. 0.014317101 0.10913123 100.06126 28.688491 6781.3899 83004752. 0.010525835 0.11450518 100.11922 28.526191 6783.6055 76645001. 0.0068095234 0.11987913 100.17718 28.366610 6785.8212 71432036. 0.0030919635 0.12525308 100.23515 28.210107 6788.0369 70313770. -0.00074469026 0.13062702 100.29311 28.049293 6790.2525 68707808. -0.0045602499 0.13600097 100.35107 27.886994 6792.4682 67844559. -0.0083908969 0.14137492 100.40902 27.724728 6794.6838 67229104. -0.012225795 0.14674887 100.46698 27.564151 6796.8995 61591670. -0.015804293 0.15212281 100.52495 27.407648 6799.1152 59435919. -0.019368847 0.15749676 100.58291 27.247854 6801.3308 58076314. -0.023179562 0.16287071 100.64087 27.085555 6803.5465 52462862. -0.024967911 0.16824465 100.69395 26.928139 6805.7621 50510204. -0.030981838 0.17361860 100.74680 26.770956 6807.9778 46217775. -0.039115628 0.17899255 100.80476 26.608656