# # 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 = 35.115322 km # Date (UTC) = 2016-12-12T09:34:19.300 # Date (julian) = 2457734.89883449 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.0352 7.0015431e+10 0.091272704 0.035007756 -23.115046 51.440856 6511.0244 6.4699803e+10 0.10115887 0.035607580 -23.212178 51.361070 6513.0135 5.7989377e+10 0.11092404 0.036207404 -23.311429 51.279164 6515.0027 5.2013822e+10 0.12085219 0.036807228 -23.412030 51.195907 6516.9918 4.6499834e+10 0.13092600 0.037407052 -23.512631 51.112651 6518.9810 4.1916913e+10 0.14127084 0.038006876 -23.610707 51.029395 6520.9701 3.8009243e+10 0.15186949 0.038606700 -23.707838 50.946138 6522.9593 3.4563438e+10 0.16004315 0.039168454 -23.804969 50.862882 6524.9485 3.1324040e+10 0.16604966 0.039763902 -23.899179 50.782549 6526.9376 2.8371450e+10 0.17018335 0.040651054 -23.992855 50.702752 6528.9268 2.5706621e+10 0.17295061 0.042177681 -24.086530 50.622955 6530.9159 2.3260069e+10 0.17572255 0.045110956 -24.180194 50.539828 6532.9051 2.0999505e+10 0.17904126 0.047440279 -24.273857 50.456573 6534.8942 1.8998548e+10 0.18021165 0.048194705 -24.366768 50.373986 6536.8834 1.7257853e+10 0.18004180 0.048580877 -24.451063 50.299056 6538.8725 1.5924332e+10 0.17947836 0.049581555 -24.535358 50.224126 6540.8617 1.4778551e+10 0.17839011 0.051261182 -24.619653 50.149196 6542.8508 1.3686125e+10 0.17628491 0.051325261 -24.712166 50.070005 6544.8400 1.2578505e+10 0.17400386 0.052325761 -24.805829 49.990219 6546.8291 1.1497523e+10 0.17111719 0.053146775 -24.899476 49.910416 6548.8183 1.0544452e+10 0.16828326 0.053912016 -24.989717 49.827184 6550.8074 9.6647323e+09 0.16632277 0.055187537 -25.079922 49.743916 6552.7966 8.8949242e+09 0.16465634 0.055386263 -25.170127 49.660650 6554.7858 8.1917830e+09 0.16243293 0.054848869 -25.260321 49.577395 6556.7749 7.5556270e+09 0.15988631 0.053899200 -25.350515 49.494140 6558.7641 6.9846322e+09 0.15704048 0.052588230 -25.439913 49.410884 6560.7532 6.4691180e+09 0.15412378 0.051595188 -25.526638 49.327628 6562.7424 6.0006036e+09 0.15146582 0.050173512 -25.613363 49.244371 6564.7315 5.5856560e+09 0.14860285 0.048440071 -25.700087 49.161115 6566.7207 5.1908788e+09 0.14590962 0.046775200 -25.786812 49.077860 6568.7098 4.8325624e+09 0.14337728 0.045119159 -25.873537 48.994605 6570.6990 4.5049041e+09 0.14126004 0.044627966 -25.960267 48.911344 6572.6881 4.2038123e+09 0.13882968 0.043836077 -26.047003 48.828077 6574.6773 3.9276799e+09 0.13584897 0.042529704 -26.133740 48.744809 6576.6664 3.6751335e+09 0.13261461 0.040604301 -26.220469 48.661549 6578.6556 3.4423455e+09 0.12893932 0.037614348 -26.307194 48.578294 6580.6448 3.2301778e+09 0.12551706 0.035924909 -26.393919 48.495039 6582.6339 3.0360075e+09 0.12234929 0.035121291 -26.478218 48.411783 6584.6231 2.8422478e+09 0.11899759 0.034176107 -26.561474 48.328526 6586.6122 2.6558214e+09 0.11557545 0.033163382 -26.644730 48.245270 6588.6014 2.4797253e+09 0.11257292 0.033179102 -26.727985 48.162014 6590.5905 2.3150340e+09 0.10947570 0.029963607 -26.811241 48.078759 6592.5797 2.1689785e+09 0.10689977 0.027510486 -26.894497 47.995504 6594.5688 2.0362509e+09 0.10457900 0.025860264 -26.977763 47.912237 6596.5580 1.9065214e+09 0.10207214 0.025724737 -27.061030 47.828970 6598.5471 1.7907606e+09 0.10028196 0.025145944 -27.144117 47.745703 6600.5363 1.6855208e+09 0.099927005 0.026092385 -27.223905 47.662446 6602.5254 1.5824234e+09 0.099137027 0.027068242 -27.303692 47.579190 6604.5146 1.4890776e+09 0.097965971 0.026376826 -27.384066 47.495934 6606.5037 1.3953691e+09 0.097199499 0.026598741 -27.467321 47.412679 6608.4929 1.3090910e+09 0.094665602 0.023719339 -27.550577 47.329424 6610.4821 1.2285933e+09 0.091869760 0.024463573 -27.632840 47.246168 6612.4712 1.1519842e+09 0.090204602 0.023968681 -27.712627 47.162912 6614.4604 1.0893533e+09 0.089053186 0.023623319 -27.792413 47.079655 6616.4495 1.0291793e+09 0.087507722 0.023352851 -27.870804 46.996395 6618.4387 9.6684006e+08 0.086821562 0.024102045 -27.947132 46.913129 6620.4278 9.0490655e+08 0.086071655 0.024905064 -28.023460 46.829862 6622.4170 8.4342528e+08 0.084779459 0.024647007 -28.101591 46.746601 6624.4061 7.9609322e+08 0.083028745 0.025079710 -28.181378 46.663345 6626.3953 7.5316590e+08 0.081507074 0.026087273 -28.261166 46.580088 6628.3844 7.1035242e+08 0.080022233 0.025859181 -28.338737 46.496833 6630.3736 6.7530499e+08 0.078457853 0.025929222 -28.415055 46.413578 6632.3627 6.3958982e+08 0.076879255 0.026075842 -28.491372 46.330323 6634.3519 6.0561948e+08 0.075576879 0.026352512 -28.574902 46.239198 6636.3411 5.6432727e+08 0.074526588 0.026417307 -28.660761 46.145534 6638.3302 5.2340481e+08 0.074120289 0.025657256 -28.744103 46.053881 6640.3194 4.8505321e+08 0.074840767 0.025231578 -28.816962 45.970615 6642.3085 4.5022402e+08 0.075354861 0.025164321 -28.889822 45.887348 6644.2977 4.2333950e+08 0.074865352 0.025375778 -28.963757 45.804085 6646.2868 3.9549472e+08 0.074419722 0.026068616 -29.040075 45.720829 6648.2760 3.7776546e+08 0.073850569 0.027149024 -29.116392 45.637572 6650.2651 3.5587232e+08 0.073700810 0.026315933 -29.191223 45.554316 6652.2543 3.3659542e+08 0.073596637 0.027320485 -29.264073 45.471060 6654.2434 3.1790595e+08 0.073213639 0.027932519 -29.336922 45.387803 6656.2326 2.9813060e+08 0.071899434 0.028227561 -29.409770 45.304548 6658.2217 2.8548548e+08 0.070800856 0.030454347 -29.482619 45.221293 6660.2109 2.7303838e+08 0.069688328 0.031817694 -29.555467 45.138038 6662.2001 2.6395966e+08 0.068407956 0.032932030 -29.626022 45.052473 6664.1892 2.5473454e+08 0.067260626 0.031513794 -29.695412 44.965737 6666.1784 2.4209421e+08 0.067328690 0.026943351 -29.764801 44.879000 6668.1675 2.2807230e+08 0.066557626 0.027619012 -29.844004 44.786853 6670.1567 2.0886063e+08 0.066148087 0.027256052 -29.925960 44.693188 6672.1458 1.9650746e+08 0.065684429 0.026964119 -30.005167 44.601798 6674.1350 1.8868555e+08 0.064488892 0.029068650 -30.074547 44.518543 6676.1241 1.8659678e+08 0.061882545 0.031793723 -30.143927 44.435288 6678.1133 1.7131845e+08 0.060681135 0.030860847 -30.213307 44.352033 6680.1024 1.5488892e+08 0.060527448 0.029463536 -30.282686 44.268777 6682.0916 1.4237668e+08 0.060672475 0.030494520 -30.352066 44.185520 6684.0807 1.3441842e+08 0.060229169 0.032658189 -30.425377 44.097547 6686.0699 1.2931915e+08 0.059021586 0.033801750 -30.503431 44.003883 6688.0590 1.1662097e+08 0.055844636 0.033798821 -30.581486 43.910219 6690.0482 1.0855587e+08 0.053140429 0.033110340 -30.648729 43.825817 6692.0374 1.0144669e+08 0.051136942 0.032721949 -30.714649 43.742550 6694.0265 99709083. 0.049503537 0.031223872 -30.780608 43.659282 6696.0157 95152517. 0.048514637 0.029682293 -30.849978 43.576026 6698.0048 95717076. 0.047300774 0.030224429 -30.919357 43.492770 6699.9940 91474845. 0.044951540 0.030673282 -30.989338 43.408203 6701.9831 86923763. 0.042348241 0.032851969 -31.063489 43.314539 6703.9723 79551518. 0.041189492 0.036108185 -31.137640 43.220876 6705.9614 74117554. 0.039742317 0.038377838 -31.207147 43.131123 6707.9506 71040666. 0.038151743 0.040050656 -31.273058 43.044398 6709.9397 64105856. 0.034298414 0.040534823 -31.338970 42.957672 6711.9289 61699552. 0.029753928 0.041749058 -31.410491 42.866222 6713.9180 57931770. 0.022721938 0.047007000 -31.484642 42.772557 6715.9072 58624615. 0.012951650 0.048306446 -31.557405 42.680125 6717.8964 59890561. -0.042612886 0.049818825 -31.619855 42.596859 6719.8855 56431220. 0.0028675681 0.050528543 -31.682305 42.513593 6721.8747 51439333. 0.11321136 0.050567439 -31.747520 42.427870