# # 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 = 54.763399 km # Date (UTC) = 2012-01-14T10:37:50.722 # Date (julian) = 2455940.94294818 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.2941 1.6501618e+11 0.037633304 0.031467243 90.496989 44.899580 6499.7521 1.3162412e+11 0.046744329 0.032208452 90.608320 44.750765 6502.2101 1.0629422e+11 0.055769076 0.032949662 90.718555 44.601951 6504.6681 8.8873338e+10 0.064955021 0.033690871 90.815186 44.471498 6507.1262 7.6121782e+10 0.074503636 0.034432081 90.911637 44.341289 6509.5842 6.6016153e+10 0.084518156 0.035173291 91.020677 44.194088 6512.0422 5.7153490e+10 0.094950353 0.035914500 91.130912 44.045273 6514.5002 4.9102927e+10 0.10577207 0.036655710 91.241144 43.896458 6516.9582 4.2509904e+10 0.11723134 0.037396919 91.347452 43.752939 6519.4163 3.7507467e+10 0.12964276 0.038138129 91.443903 43.622729 6521.8743 3.3466140e+10 0.14293107 0.038879338 91.542099 43.488592 6524.3323 2.9919744e+10 0.15045748 0.039545009 91.646822 43.339777 6526.7903 2.6717425e+10 0.15727297 0.040496638 91.746351 43.198343 6529.2483 2.3927866e+10 0.16280846 0.042631359 91.837981 43.068133 6531.7064 2.1592732e+10 0.16859467 0.046256786 91.933841 42.933692 6534.1644 1.9534284e+10 0.17246754 0.047990539 92.038560 42.790390 6536.6224 1.7676354e+10 0.17478238 0.048347374 92.136619 42.653749 6539.0804 1.6080573e+10 0.17618675 0.049740970 92.228249 42.523539 6541.5384 1.4708486e+10 0.17562309 0.051151918 92.325578 42.385232 6543.9965 1.3439385e+10 0.17332125 0.051643418 92.430300 42.236417 6546.4545 1.2275016e+10 0.17090388 0.052838488 92.523899 42.099153 6548.9125 1.1300633e+10 0.16830963 0.053940149 92.610706 41.968943 6551.3705 1.0489490e+10 0.16628661 0.055365809 92.704301 41.828550 6553.8285 9.7430167e+09 0.16381363 0.054918572 92.803511 41.679735 6556.2866 9.0574083e+09 0.16122759 0.053970996 92.893630 41.544557 6558.7446 8.4302690e+09 0.15849627 0.052604831 92.980437 41.414347 6561.2026 7.8313036e+09 0.15528123 0.051272844 93.075422 41.271869 6563.6606 7.2413981e+09 0.15232277 0.049164182 93.174632 41.123054 6566.1186 6.6901898e+09 0.14963360 0.047115769 93.259284 40.989963 6568.5767 6.2208064e+09 0.14760088 0.045241573 93.341267 40.859755 6571.0347 5.7953593e+09 0.14563076 0.044493803 93.436541 40.715191 6573.4927 5.3865687e+09 0.14336745 0.043262100 93.535751 40.566377 6575.9507 5.0071950e+09 0.14063376 0.041420835 93.618472 40.435369 6578.4087 4.6851544e+09 0.13759622 0.038004162 93.700455 40.305159 6580.8668 4.4440008e+09 0.13415445 0.035719739 93.782438 40.179209 6583.3248 4.2119203e+09 0.13126877 0.034857275 93.864421 40.053821 6585.7828 3.9615643e+09 0.12807462 0.033344939 93.951431 39.909457 6588.2408 3.7090053e+09 0.12539655 0.033299507 94.039604 39.760689 6590.6988 3.4816425e+09 0.12171191 0.029762106 94.121642 39.630334 6593.1569 3.2844868e+09 0.11800066 0.026956383 94.203637 39.500106 6595.6149 3.0882929e+09 0.11396860 0.025687337 94.296426 39.352733 6598.0729 2.8791185e+09 0.11104192 0.025372357 94.388336 39.205929 6600.5309 2.6751880e+09 0.11025090 0.026081362 94.465500 39.075719 6602.9889 2.5082629e+09 0.10953973 0.026672706 94.542663 38.945508 6605.4470 2.3852259e+09 0.10889392 0.027040013 94.619822 38.815298 6607.9050 2.2654075e+09 0.10699389 0.023919984 94.696982 38.685088 6610.3630 2.1376317e+09 0.10383656 0.024349825 94.784740 38.537000 6612.8210 2.0042950e+09 0.10228733 0.023707311 94.871311 38.391619 6615.2790 1.8841849e+09 0.10112087 0.023260117 94.948471 38.266233 6617.7371 1.7848829e+09 0.10012787 0.023683622 95.026033 38.139136 6620.1951 1.6849362e+09 0.099517853 0.024830065 95.108709 37.990321 6622.6531 1.5837046e+09 0.098156624 0.024584156 95.189958 37.846319 6625.1111 1.4810763e+09 0.096709207 0.025530217 95.267122 37.716109 6627.5692 1.4000100e+09 0.094659163 0.025536665 95.343392 37.585898 6630.0272 1.3396422e+09 0.093165181 0.025928369 95.415732 37.455688 6632.4852 1.2736928e+09 0.091196666 0.026090524 95.489838 37.324018 6634.9432 1.2046468e+09 0.089547172 0.026395645 95.578022 37.180716 6637.4012 1.1281082e+09 0.087913192 0.025964900 95.661498 37.041305 6639.8593 1.0593218e+09 0.087413224 0.025320958 95.733838 36.911094 6642.3173 1.0040565e+09 0.087285340 0.025164680 95.806178 36.780884 6644.7753 9.5711087e+08 0.085922585 0.025427399 95.878517 36.650674 6647.2333 9.1329638e+08 0.084311225 0.026560621 95.951580 36.517672 6649.6913 8.6248501e+08 0.083107925 0.026680716 96.028743 36.368857 6652.1494 8.1823966e+08 0.082511357 0.027291615 96.104287 36.227907 6654.6074 7.7648715e+08 0.081674365 0.027777478 96.176626 36.102519 6657.0654 7.4110521e+08 0.079855796 0.028976969 96.250230 35.970990 6659.5234 7.0760379e+08 0.078504313 0.031725413 96.327393 35.822178 6661.9814 6.6873779e+08 0.077221214 0.033034817 96.402394 35.681695 6664.4395 6.3662571e+08 0.076280339 0.030598130 96.474730 35.551484 6666.8975 6.0547898e+08 0.076297225 0.027083480 96.545268 35.423071 6669.3555 5.7817045e+08 0.075327305 0.027990580 96.612798 35.297664 6671.8135 5.5044791e+08 0.075436782 0.026876942 96.683226 35.165212 6674.2715 5.2408366e+08 0.074571805 0.029183853 96.760389 35.016398 6676.7296 5.0095180e+08 0.072184782 0.032183921 96.832857 34.876636 6679.1876 4.7622524e+08 0.071600839 0.030112763 96.900373 34.746426 6681.6456 4.5593463e+08 0.072756275 0.030152653 96.971874 34.610809 6684.1036 4.3356293e+08 0.073116161 0.032659350 97.049036 34.467507 6686.5616 4.1298063e+08 0.072032724 0.034087856 97.120424 34.332043 6689.0197 3.9255955e+08 0.068890383 0.033998325 97.187940 34.201832 6691.4777 3.7288917e+08 0.067909380 0.032888561 97.257627 34.064747 6693.9357 3.5508802e+08 0.066806743 0.031283085 97.329277 33.921445 6696.3937 3.4227453e+08 0.066526225 0.029839370 97.397988 33.787448 6698.8517 3.2904187e+08 0.065186644 0.031386934 97.465504 33.657238 6701.3098 3.1658888e+08 0.063118886 0.031863959 97.535657 33.515173 6703.7678 3.0274996e+08 0.063015236 0.035596477 97.607311 33.366359 6706.2258 2.8807156e+08 0.063010159 0.038839401 97.671591 33.236822 6708.6838 2.7408733e+08 0.062541475 0.040788240 97.734283 33.111436 6711.1418 2.6370340e+08 0.060780933 0.040853615 97.807818 32.968494 6713.5999 2.5238222e+08 0.058528107 0.045856213 97.884982 32.819678 6716.0579 2.4079239e+08 0.056588808 0.048486622 97.948615 32.692767 6718.5159 2.3280938e+08 0.054118755 0.050615901 98.011307 32.567378 6720.9739 2.2107912e+08 0.054091403 0.050306920 98.076970 32.421811 6723.4319 2.1113049e+08 0.052726073 0.049609849 98.142949 32.274099 6725.8900 1.9956730e+08 0.048485453 0.041020099 98.205642 32.148712 6728.3480 1.8908590e+08 0.047694344 0.040121315 98.268334 32.023326 6730.8060 1.8316163e+08 0.045922708 0.041484041 98.339750 31.880498 6733.2640 1.7838331e+08 0.044460731 0.045357803 98.411404 31.736318 6735.7221 1.7113020e+08 0.045325303 0.050059942 98.483054 31.587502 6738.1801 1.6450124e+08 0.046734391 0.058312464 98.549954 31.446765 6740.6381 1.5982077e+08 0.045959738 0.065140432 98.607826 31.321378 6743.0961 1.5099587e+08 0.042049569 0.071695808 98.669435 31.189636 6745.5541 1.4547265e+08 0.038866065 0.078799839 98.741085 31.040821 6748.0122 1.3609914e+08 0.034557294 0.067080836 98.810218 30.894525 6750.4702 1.2863030e+08 0.031651423 0.072806971 98.876360 30.751224 6752.9282 1.2512375e+08 0.028666594 0.073060383 98.937185 30.619433 6755.3862 1.1787288e+08 0.026294107 0.074436015 98.995054 30.494045 6757.8442 1.1357968e+08 0.024617031 0.074178030 99.057630 30.355328 6760.3023 1.0917987e+08 0.025196191 0.076637657 99.123771 30.206512 6762.7603 1.0613872e+08 0.029902967 0.076824459 99.189913 30.061857 6765.2183 1.0168871e+08 0.032623783 0.079571044 99.256054 29.918554 6767.6763 97400023. 0.030918920 0.081218467 99.322191 29.775251 6770.1343 91586231. 0.025555920 0.087205526 99.387287 29.634205 6772.5924 86222558. 0.020960892 0.093167306 99.445160 29.508818 6775.0504 82519655. 0.016399497 0.099129086 99.503465 29.382203 6777.5084 78080080. 0.011794920 0.10509087 99.569606 29.233389 6779.9664 76921560. 0.0073081451 0.11105265 99.634435 29.085887 6782.4244 73963660. 0.0027320585 0.11701443 99.695064 28.942583 6784.8825 72263900. -0.0018100511 0.12297621 99.758027 28.799280 6787.3405 70854098. -0.0063688620 0.12893799 99.824164 28.655977 6789.7985 68548119. -0.011036618 0.13489977 99.886944 28.512674 6792.2565 66523758. -0.015775666 0.14086155 99.947573 28.369371 6794.7145 62487700. -0.020842818 0.14682333 100.01258 28.226069 6797.1726 58932336. -0.026174957 0.15278511 100.07873 28.082766 6799.6306 56207742. -0.031927397 0.15874689 100.13946 27.934057 6802.0886 54457194. -0.038470257 0.16470867 100.20009 27.786160 6804.5466 53628612. -0.047538460 0.17067045 100.26072 27.642856 6807.0046 53428512. -0.079038911 0.17663223 100.32135 27.499553 6809.4627 52784370. -0.060339507 0.18259401 100.38197 27.356251 6811.9207 50115447. -0.014218492 0.18855579 100.44260 27.212948