# # 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 = 42.307539 km # Date (UTC) = 2011-01-18T08:43:52.621 # Date (julian) = 2455579.86380348 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6508.4082 7.4228293e+10 0.088466098 0.034818666 116.14465 49.441019 6511.0298 6.3303460e+10 0.10057693 0.035609204 116.28573 49.286290 6513.6514 5.4583960e+10 0.11297302 0.036399742 116.42682 49.133451 6516.2730 4.7523175e+10 0.12569425 0.037190280 116.56790 48.974865 6518.8946 4.1715384e+10 0.13876819 0.037980818 116.70736 48.817770 6521.5162 3.6707897e+10 0.15215766 0.038771356 116.84256 48.664929 6524.1378 3.2503027e+10 0.15981053 0.039475908 116.97777 48.508709 6526.7594 2.8905008e+10 0.16580660 0.040464216 117.11297 48.349992 6529.3810 2.5793428e+10 0.17006457 0.042842673 117.24817 48.196411 6532.0026 2.3140579e+10 0.17426841 0.046686361 117.38236 48.042553 6534.6242 2.0792793e+10 0.17587751 0.048119171 117.51169 47.883835 6537.2458 1.8655122e+10 0.17657679 0.048801114 117.64102 47.725116 6539.8674 1.6770945e+10 0.17722784 0.050693608 117.77034 47.566398 6542.4890 1.5083962e+10 0.17577177 0.051187896 117.89967 47.412210 6545.1106 1.3588148e+10 0.17472128 0.052456558 118.02899 47.258962 6547.7322 1.2253917e+10 0.17252524 0.053565817 118.15832 47.100244 6550.3538 1.1090125e+10 0.16970329 0.055073956 118.28548 46.941525 6552.9754 1.0058664e+10 0.16539762 0.055341250 118.40893 46.782806 6555.5970 9.1414105e+09 0.15991589 0.054351707 118.53238 46.628011 6558.2186 8.3086249e+09 0.15484501 0.053052991 118.65583 46.475172 6560.8403 7.5430012e+09 0.14979256 0.051516715 118.77927 46.316653 6563.4619 6.8319513e+09 0.14619454 0.049394107 118.90116 46.159492 6566.0835 6.1867164e+09 0.14286766 0.047135671 119.01873 46.006650 6568.7051 5.6412452e+09 0.14046483 0.045123540 119.12801 45.861684 6571.3267 5.1844257e+09 0.13828670 0.044414055 119.23088 45.722809 6573.9483 4.7889584e+09 0.13533343 0.042896514 119.34286 45.571637 6576.5699 4.4092293e+09 0.13255167 0.040715450 119.46043 45.412920 6579.1915 4.0358918e+09 0.12911788 0.036965230 119.57800 45.254202 6581.8131 3.6931501e+09 0.12634020 0.035350394 119.69557 45.096762 6584.4347 3.3932148e+09 0.12352184 0.034278717 119.81314 44.943921 6587.0563 3.1219443e+09 0.12084743 0.033170843 119.92767 44.788045 6589.6779 2.8671290e+09 0.11803556 0.031701079 120.03936 44.629326 6592.2995 2.6237387e+09 0.11463729 0.027782613 120.15105 44.470609 6594.9211 2.4094499e+09 0.11123214 0.025666876 120.26115 44.314743 6597.5427 2.2290210e+09 0.10752992 0.025551466 120.35888 44.181010 6600.1643 2.0770819e+09 0.10553676 0.025327692 120.45898 44.043031 6602.7859 1.9364383e+09 0.10361958 0.026845955 120.57067 43.884313 6605.4075 1.7918974e+09 0.10169383 0.027006930 120.67960 43.725594 6608.0291 1.6532463e+09 0.098457204 0.023731601 120.78541 43.566876 6610.6507 1.5157468e+09 0.093793306 0.024624748 120.89123 43.412670 6613.2723 1.3937538e+09 0.091434620 0.023673515 120.99616 43.260760 6615.8940 1.2895423e+09 0.089264664 0.023279036 121.08874 43.121885 6618.5156 1.2022195e+09 0.088480883 0.024160102 121.18294 42.980581 6621.1372 1.1242446e+09 0.087909960 0.025043984 121.28876 42.821863 6623.7588 1.0476054e+09 0.086385659 0.024772936 121.39457 42.663144 6626.3804 9.7071915e+08 0.085233239 0.026106277 121.50038 42.504425 6629.0020 8.9404447e+08 0.084018084 0.026108748 121.60196 42.349940 6631.6236 8.2687032e+08 0.082551073 0.025994109 121.70175 42.197367 6634.2452 7.7180917e+08 0.081238923 0.026344728 121.79434 42.058491 6636.8668 7.2547030e+08 0.079871396 0.026213143 121.88747 41.918131 6639.4884 6.8114359e+08 0.079352443 0.025453512 121.98741 41.759412 6642.1100 6.3728271e+08 0.079970381 0.025156197 122.08734 41.602890 6644.7316 5.8944271e+08 0.079141251 0.025422677 122.18728 41.450051 6647.3532 5.4751464e+08 0.078053644 0.026623746 122.28326 41.293258 6649.9748 5.0636113e+08 0.077348801 0.026289955 122.37731 41.134539 6652.5964 4.7223258e+08 0.076892772 0.027414620 122.46494 40.995096 6655.2180 4.4664385e+08 0.075535675 0.027700304 122.55256 40.855841 6657.8396 4.2106461e+08 0.073541370 0.029875053 122.64662 40.703000 6660.4612 3.9866052e+08 0.071736657 0.032045236 122.74067 40.548242 6663.0828 3.7365656e+08 0.070160595 0.032460256 122.83473 40.389525 6665.7044 3.4626420e+08 0.069556465 0.027392877 122.92878 40.230807 6668.3260 3.2282945e+08 0.068507527 0.027759303 123.02284 40.072089 6670.9477 3.0002459e+08 0.068054005 0.026889600 123.10603 39.936453 6673.5693 2.8193835e+08 0.067346153 0.028310582 123.18833 39.802720 6676.1909 2.6695780e+08 0.064834978 0.031836733 123.28214 39.644510 6678.8125 2.4738573e+08 0.063822371 0.030393202 123.37456 39.485791 6681.4341 2.3184486e+08 0.064969503 0.029990371 123.46274 39.327073 6684.0557 2.1638961e+08 0.065335526 0.032656917 123.55431 39.171749 6686.6773 2.0154515e+08 0.064010095 0.034155137 123.64837 39.018911 6689.2989 1.9053930e+08 0.060728424 0.033746980 123.72761 38.878306 6691.9205 1.7840188e+08 0.059357377 0.032784088 123.80476 38.739430 6694.5421 1.6869691e+08 0.058192714 0.030501252 123.89219 38.587539 6697.1637 1.6006542e+08 0.057342807 0.030111982 123.98037 38.433343 6699.7853 1.4779373e+08 0.055265146 0.030865821 124.06854 38.274624 6702.4069 1.3887674e+08 0.053182065 0.033201649 124.15672 38.115906 6705.0285 1.3282625e+08 0.053098572 0.036719298 124.24490 37.957187 6707.6501 1.2377195e+08 0.052127169 0.040093698 124.32820 37.803340 6710.2717 1.1803477e+08 0.050265834 0.040549681 124.40984 37.652280 6712.8933 1.1307258e+08 0.047330916 0.043488571 124.48700 37.513406 6715.5149 1.0750790e+08 0.044402535 0.047905247 124.56510 37.371970 6718.1365 1.0130173e+08 0.041283554 0.050025061 124.64739 37.219129 6720.7581 93083743. 0.039761859 0.050331922 124.72969 37.063453 6723.3797 86693564. 0.037669027 0.049580736 124.81199 36.904735 6726.0014 83436352. 0.032686957 0.040951380 124.89429 36.750609 6728.6230 80676637. 0.031374108 0.040511034 124.97659 36.597300 6731.2446 73903068. 0.028204378 0.042236748 125.05888 36.438582 6733.8662 68786130. 0.025563418 0.048626979 125.14118 36.282091 6736.4878 63790604. 0.025893832 0.052199054 125.22348 36.129251 6739.1094 59618580. 0.024819423 0.062960407 125.30578 35.972427 6741.7310 55454210. 0.019543419 0.067843492 125.38808 35.813708 6744.3526 52753412. 0.0093552296 0.078066128 125.46463 35.660730 6746.9742 52546319. -0.0051308452 0.067661225 125.53984 35.511737 6749.5958 55016231. -0.061141425 0.072114804 125.61185 35.372861 6752.2174 56186366. -0.014665121 0.073882904 125.68532 35.229359 6754.8390 52151817. 0.086389824 0.074864246 125.76174 35.076520