# # 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 = 43.345112 km # Date (UTC) = 2010-11-30T10:33:39.511 # Date (julian) = 2455530.94004063 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.4312 1.0739056e+11 0.067645967 0.033619434 92.588699 35.869773 6506.6641 9.1330165e+10 0.077520348 0.034292756 92.655119 35.750784 6508.8970 7.7723710e+10 0.087561671 0.034966079 92.720833 35.632501 6511.1299 6.6627691e+10 0.097859738 0.035639401 92.786547 35.511780 6513.3628 5.7556051e+10 0.10846195 0.036312724 92.852261 35.389114 6515.5957 5.0446869e+10 0.11949533 0.036986046 92.917978 35.266444 6517.8286 4.4577162e+10 0.13091758 0.037659368 92.983702 35.143761 6520.0615 3.9861018e+10 0.14279380 0.038332691 93.049426 35.021087 6522.2944 3.5781653e+10 0.15419126 0.038994331 93.115137 34.902755 6524.5272 3.2335135e+10 0.16075552 0.039614267 93.180847 34.784471 6526.7601 2.9446055e+10 0.16625111 0.040465002 93.246560 34.663083 6528.9930 2.6921196e+10 0.17032748 0.042230254 93.312275 34.540418 6531.2259 2.4654277e+10 0.17420903 0.045557507 93.376122 34.417753 6533.4588 2.2450627e+10 0.17759059 0.047714568 93.437454 34.295087 6535.6917 2.0429166e+10 0.17815283 0.047924240 93.499414 34.173049 6537.9246 1.8740325e+10 0.17934901 0.049121130 93.565128 34.054765 6540.1575 1.7253481e+10 0.17923377 0.050928501 93.630842 33.936481 6542.3904 1.5744000e+10 0.17652732 0.051150446 93.700327 33.799342 6544.6233 1.4250290e+10 0.17392035 0.052149953 93.770423 33.659151 6546.8562 1.2864461e+10 0.17099387 0.053169005 93.836736 33.537874 6549.0890 1.1715389e+10 0.16790339 0.054057027 93.902450 33.419590 6551.3219 1.0773868e+10 0.16580570 0.055348757 93.965619 33.298762 6553.5548 9.9376115e+09 0.16351040 0.055056161 94.026951 33.176097 6555.7877 9.1523418e+09 0.16085554 0.054191491 94.088284 33.054738 6558.0206 8.4320640e+09 0.15855265 0.053221741 94.149616 32.936454 6560.2535 7.7643667e+09 0.15561452 0.052045744 94.210880 32.818102 6562.4864 7.1513115e+09 0.15254739 0.050417082 94.267831 32.695438 6564.7193 6.6146721e+09 0.14964619 0.048445617 94.324781 32.572773 6566.9522 6.1616290e+09 0.14711589 0.046644241 94.384952 32.453306 6569.1851 5.7595611e+09 0.14457331 0.044864469 94.446296 32.335004 6571.4180 5.3839807e+09 0.14253121 0.044389123 94.507635 32.214736 6573.6508 5.0160488e+09 0.13985295 0.043135191 94.568968 32.092071 6575.8837 4.6501948e+09 0.13710757 0.041488039 94.629564 31.970141 6578.1166 4.3276034e+09 0.13416480 0.038465440 94.686515 31.851857 6580.3495 4.0389789e+09 0.13096702 0.036197744 94.743465 31.733572 6582.5824 3.7890167e+09 0.12797707 0.035135304 94.804294 31.611411 6584.8153 3.5627673e+09 0.12495431 0.034071384 94.865627 31.488746 6587.0482 3.3510182e+09 0.12187349 0.033169048 94.924318 31.368721 6589.2811 3.1550077e+09 0.11870082 0.032488327 94.981269 31.250437 6591.5140 2.9716885e+09 0.11495356 0.028621946 95.038220 31.132152 6593.7469 2.7941404e+09 0.11148586 0.026407860 95.095174 31.013868 6595.9798 2.6310507e+09 0.10782491 0.025725175 95.152127 30.895421 6598.2127 2.4744493e+09 0.10555896 0.025305638 95.209078 30.772756 6600.4455 2.3214050e+09 0.10503069 0.025905827 95.266028 30.650091 6602.6784 2.1796339e+09 0.10437635 0.026937686 95.322981 30.530733 6604.9113 2.0449136e+09 0.10363070 0.026612390 95.379935 30.412449 6607.1442 1.9221556e+09 0.10246280 0.025422225 95.436887 30.294164 6609.3771 1.8039760e+09 0.099515667 0.023817950 95.493838 30.175880 6611.6100 1.6951943e+09 0.096966024 0.024569458 95.550790 30.056762 6613.8429 1.5902728e+09 0.096085870 0.023882848 95.607749 29.934079 6616.0758 1.4991656e+09 0.094612228 0.023294192 95.664707 29.811395 6618.3087 1.4185377e+09 0.094025834 0.024003879 95.717687 29.692703 6620.5416 1.3375457e+09 0.093298097 0.024941715 95.770259 29.574420 6622.7745 1.2654122e+09 0.091875917 0.024551859 95.825565 29.456136 6625.0073 1.1923793e+09 0.090412129 0.025406367 95.882515 29.337851 6627.2402 1.1276154e+09 0.088294538 0.025409609 95.937969 29.219567 6629.4731 1.0668012e+09 0.087073263 0.026023562 95.990541 29.101283 6631.7060 1.0057505e+09 0.085243027 0.026002483 96.043372 28.982999 6633.9389 9.4970624e+08 0.083633588 0.026316177 96.100322 28.864714 6636.1718 8.9675340e+08 0.082014013 0.026483036 96.157272 28.746430 6638.4047 8.4931938e+08 0.080797651 0.025654011 96.210823 28.624744 6640.6376 7.9804347e+08 0.080909185 0.025192643 96.263395 28.502079 6642.8705 7.5046386e+08 0.080548272 0.025187318 96.315967 28.381578 6645.1034 7.0811251e+08 0.079543346 0.025500106 96.368539 28.263294 6647.3363 6.6741979e+08 0.078551700 0.026614819 96.421110 28.145010 6649.5691 6.3440488e+08 0.077869447 0.026849149 96.473679 28.026726 6651.8020 6.0149256e+08 0.077717881 0.027098810 96.526247 27.908441 6654.0349 5.7088106e+08 0.077325314 0.028021346 96.578826 27.790141 6656.2678 5.3935810e+08 0.075783561 0.028258480 96.631406 27.671839 6658.5007 5.0527945e+08 0.074546140 0.030949096 96.683978 27.553549 6660.7336 4.7819000e+08 0.073341999 0.032292805 96.736547 27.435266 6662.9665 4.5656975e+08 0.072248358 0.032502013 96.791848 27.310835 6665.1994 4.3418685e+08 0.071770692 0.028220436 96.851932 27.175650 6667.4323 4.1050921e+08 0.071379962 0.027262239 96.907658 27.046657 6669.6652 3.8548448e+08 0.070652138 0.027672532 96.955848 26.928373 6671.8981 3.6320989e+08 0.070585135 0.026878146 97.004405 26.810089 6674.1309 3.4695347e+08 0.069700290 0.029065253 97.056977 26.691805 6676.3638 3.2872694e+08 0.067373749 0.031948215 97.109549 26.573521 6678.5967 3.1275521e+08 0.066399023 0.030537496 97.158610 26.455237 6680.8296 2.9744592e+08 0.067069810 0.029620566 97.206800 26.336954 6683.0625 2.8302101e+08 0.067571702 0.031280191 97.257260 26.218670 6685.2954 2.7038049e+08 0.067108475 0.033016855 97.309829 26.100386 6687.5283 2.5606910e+08 0.064861486 0.034048266 97.361365 25.982102 6689.7612 2.4456663e+08 0.062309490 0.033330837 97.409555 25.863817 6691.9941 2.3320004e+08 0.060985048 0.032766727 97.457745 25.745532 6694.2270 2.1871430e+08 0.059898346 0.030942922 97.512499 25.615911 6696.4599 2.0462535e+08 0.059499875 0.029866847 97.567574 25.485733 6698.6927 1.8893559e+08 0.058218335 0.031168693 97.620256 25.366925 6700.9256 1.8294780e+08 0.056201880 0.031354290 97.672828 25.248641 6703.1585 1.7787281e+08 0.055723988 0.034071927 97.722450 25.130357 6705.3914 1.7025305e+08 0.055639918 0.037364474 97.770640 25.012074 6707.6243 1.6299476e+08 0.055095151 0.040097394 97.818830 24.893790 6709.8572 1.5329489e+08 0.053853192 0.040587320 97.867020 24.775505 6712.0901 1.4878066e+08 0.051533070 0.041997233 97.915954 24.655394 6714.3230 1.4042194e+08 0.049183828 0.047327690 97.971025 24.520210 6716.5559 1.3359145e+08 0.047104517 0.049220115 98.025336 24.387380 6718.7888 1.2613844e+08 0.044514983 0.051040859 98.073533 24.273460 6721.0217 1.1883666e+08 0.044560502 0.050310425 98.121730 24.159540 6723.2545 1.1597307e+08 0.043319659 0.049510911 98.166294 24.042005 6725.4874 1.1032814e+08 0.039031397 0.041271539 98.210105 23.923722 6727.7203 1.0575319e+08 0.037912111 0.040000698 98.260063 23.796213 6729.9532 99265695. 0.036636340 0.040410080 98.315135 23.661028 6732.1861 91261385. 0.034760569 0.043774472 98.366432 23.537517 6734.4190 86714263. 0.034159353 0.049328389 98.414622 23.423614 6736.6519 80819150. 0.035811847 0.052819536 98.462812 23.308545 6738.8848 77596758. 0.036744909 0.062192249 98.511002 23.190261 6741.1177 74293016. 0.035525531 0.066094314 98.559192 23.071977 6743.3506 72497926. 0.031530777 0.073412367 98.609232 22.941998 6745.5835 71146803. 0.029096170 0.078812168 98.659303 22.811820 6747.8164 66542554. 0.024316452 0.067080123 98.707516 22.693370 6750.0492 62093651. 0.020767812 0.072088214 98.755703 22.575087 6752.2821 59196079. 0.016537495 0.073807996 98.805215 22.444916 6754.5150 58840134. 0.012910820 0.075385248 98.855287 22.309731 6756.7479 55135577. 0.0034625334 0.076091404 98.900936 22.189573 6758.9808 53293891. -0.033526155 0.075779366 98.944744 22.075669 6761.2137 51541063. -0.0021129434 0.077985880 98.993324 21.954873 6763.4466 52403390. 0.070963958 0.077797858 99.048400 21.824696