# # 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 = 62.910523 km # Date (UTC) = 2012-01-11T09:53:00.231 # Date (julian) = 2455937.91180823 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.2256 1.3002295e+11 0.077403668 0.034160509 102.81396 42.531739 6508.9809 1.0310099e+11 0.089441344 0.034991388 102.93135 42.364921 6511.7363 8.1967343e+10 0.10153643 0.035822268 103.03890 42.212092 6514.4917 6.6527364e+10 0.11383626 0.036653147 103.14162 42.066130 6517.2471 5.5754713e+10 0.12655676 0.037484026 103.24434 41.924587 6520.0025 4.7582830e+10 0.13969765 0.038314906 103.34707 41.784008 6522.7579 4.1030496e+10 0.15116303 0.039115709 103.44453 41.638199 6525.5133 3.5810056e+10 0.15697390 0.039723638 103.54250 41.492237 6528.2686 3.1588342e+10 0.16181129 0.041655599 103.64521 41.346276 6531.0240 2.7856491e+10 0.16480049 0.045263655 103.75024 41.194644 6533.7794 2.4549348e+10 0.16793948 0.047850815 103.86145 41.027826 6536.5348 2.1597259e+10 0.16850190 0.048269003 103.96358 40.874634 6539.2902 1.9086463e+10 0.16956556 0.049994894 104.06089 40.728672 6542.0456 1.7112928e+10 0.16949863 0.051019541 104.15385 40.582709 6544.8010 1.5470575e+10 0.16941324 0.052294102 104.24575 40.436746 6547.5563 1.4065487e+10 0.16864410 0.053498933 104.34281 40.295939 6550.3117 1.2854876e+10 0.16749143 0.055063415 104.43956 40.154819 6553.0671 1.1801171e+10 0.16503233 0.055301327 104.53146 40.008858 6555.8225 1.0771905e+10 0.16102487 0.054162263 104.62827 39.857595 6558.5779 9.7761273e+09 0.15704519 0.052746870 104.73948 39.690778 6561.3333 8.8316415e+09 0.15274623 0.051208449 104.83842 39.537217 6564.0887 7.9977391e+09 0.14919101 0.048731415 104.93032 39.391254 6566.8441 7.3350194e+09 0.14688968 0.046705408 105.02222 39.245291 6569.5994 6.7640392e+09 0.14484969 0.044891438 105.11413 39.099328 6572.3548 6.2633712e+09 0.14294313 0.044026958 105.20098 38.958408 6575.1102 5.8055852e+09 0.14053038 0.042264134 105.28796 38.817365 6577.8656 5.3881683e+09 0.13765572 0.038860733 105.37986 38.671402 6580.6210 5.0019117e+09 0.13464288 0.035946877 105.47048 38.525439 6583.3764 4.6566594e+09 0.13224402 0.034831166 105.55698 38.379477 6586.1318 4.3244254e+09 0.12965476 0.033169593 105.64347 38.233514 6588.8871 4.0227026e+09 0.12746224 0.033083668 105.72997 38.087551 6591.6425 3.7598562e+09 0.12435909 0.028476895 105.81646 37.944492 6594.3979 3.5159525e+09 0.12118717 0.025954089 105.90296 37.803934 6597.1533 3.2797361e+09 0.11772000 0.025674352 105.99795 37.645326 6599.9087 3.0369964e+09 0.11597834 0.024984383 106.09595 37.479947 6602.6641 2.8054147e+09 0.11469627 0.026949943 106.18245 37.333984 6605.4195 2.6093171e+09 0.11306663 0.027016934 106.26895 37.188022 6608.1748 2.4477347e+09 0.10980121 0.023727749 106.35545 37.042059 6610.9302 2.3013306e+09 0.10501158 0.024891791 106.43995 36.898092 6613.6856 2.1591331e+09 0.10268763 0.023825144 106.52104 36.757535 6616.4410 2.0223352e+09 0.10008379 0.023351514 106.60213 36.614169 6619.1964 1.9004248e+09 0.098712668 0.024573299 106.68322 36.468206 6621.9518 1.7807330e+09 0.097469402 0.024773977 106.76794 36.322230 6624.7072 1.6722821e+09 0.095832787 0.025240848 106.85445 36.176247 6627.4625 1.5708990e+09 0.094107189 0.025495484 106.93651 36.034715 6630.2179 1.4767279e+09 0.092938157 0.025928839 107.01760 35.894157 6632.9733 1.3954228e+09 0.091359567 0.026149054 107.09345 35.748355 6635.7287 1.3192377e+09 0.089649288 0.026509068 107.16978 35.603044 6638.4841 1.2480274e+09 0.088424270 0.025650552 107.25087 35.462489 6641.2395 1.1742520e+09 0.088981050 0.025149114 107.33510 35.314820 6643.9949 1.0953937e+09 0.088179619 0.025342831 107.42778 35.148001 6646.7502 1.0226074e+09 0.087110540 0.026308500 107.50937 34.994787 6649.5056 9.5854477e+08 0.085983747 0.026936695 107.58505 34.848825 6652.2610 9.0625791e+08 0.085447929 0.027322338 107.66508 34.707201 6655.0164 8.5896315e+08 0.084174688 0.027616996 107.74617 34.566646 6657.7718 8.1237943e+08 0.081904356 0.029796367 107.82211 34.420939 6660.5272 7.6908539e+08 0.079937017 0.032105178 107.89779 34.275533 6663.2826 7.3167541e+08 0.078092584 0.032404907 107.97347 34.134975 6666.0380 6.9674773e+08 0.077411705 0.026915990 108.04916 33.993048 6668.7933 6.6151568e+08 0.075899907 0.028172822 108.12484 33.847086 6671.5487 6.2258909e+08 0.075625911 0.026873168 108.20489 33.695204 6674.3041 5.8154016e+08 0.074365908 0.029211328 108.29139 33.534565 6677.0595 5.4486407e+08 0.071551853 0.032273638 108.36516 33.385428 6679.8149 5.1487725e+08 0.071473438 0.029594389 108.43546 33.239444 6682.5703 4.9124222e+08 0.072539467 0.030860250 108.51079 33.098537 6685.3257 4.6762546e+08 0.072628130 0.033048809 108.58601 32.957519 6688.0810 4.4634469e+08 0.070196768 0.033803897 108.65629 32.811556 6690.8364 4.2520680e+08 0.068298881 0.033020008 108.72784 32.666867 6693.5918 4.0527164e+08 0.067321965 0.031401060 108.80352 32.526309 6696.3472 3.8754342e+08 0.067091945 0.029820040 108.88100 32.378002 6699.1026 3.6942920e+08 0.065811199 0.031495775 108.96132 32.217364 6701.8580 3.5092358e+08 0.063888354 0.032668334 109.03393 32.067988 6704.6134 3.3333990e+08 0.064477319 0.036478744 109.10421 31.922025 6707.3687 3.1506290e+08 0.064385591 0.040134004 109.17449 31.781023 6710.1241 2.9991882e+08 0.063357167 0.040520792 109.24545 31.639105 6712.8795 2.8687358e+08 0.060963736 0.043462927 109.32577 31.478464 6715.6349 2.7332016e+08 0.058652075 0.048027948 109.40158 31.324419 6718.3903 2.5950787e+08 0.056116459 0.050420259 109.47185 31.178458 6721.1457 2.4629228e+08 0.056019700 0.050347791 109.54213 31.035736 6723.9011 2.3627035e+08 0.054226257 0.049871481 109.61241 30.895180 6726.6564 2.2637134e+08 0.050077022 0.040957288 109.68558 30.739567 6729.4118 2.1420474e+08 0.049474329 0.040770930 109.75922 30.580853 6732.1672 2.0282764e+08 0.047554001 0.043770994 109.82950 30.434890 6734.9226 1.9377430e+08 0.047530681 0.049298089 109.89825 30.290448 6737.6780 1.8746464e+08 0.049684697 0.056295325 109.96313 30.149891 6740.4334 1.8208908e+08 0.049551246 0.064790714 110.03200 30.000667 6743.1888 1.7239369e+08 0.045692084 0.072320837 110.10614 29.840028 6745.9442 1.6450266e+08 0.043127666 0.078963799 110.17715 29.695700 6748.6995 1.5928617e+08 0.039275197 0.070697184 110.24744 29.555123 6751.4549 1.5424271e+08 0.035583326 0.073904015 110.32144 29.395216 6754.2103 1.5017311e+08 0.033305523 0.075875269 110.39238 29.241506 6756.9657 1.4520123e+08 0.030191187 0.076651784 110.45725 29.100950 6759.7211 1.3649329e+08 0.031693888 0.075993963 110.52672 28.947387 6762.4765 1.3060410e+08 0.036336485 0.077282264 110.60086 28.780568 6765.2319 1.2410219e+08 0.039817747 0.079573519 110.66688 28.636774 6767.9872 1.1918475e+08 0.037669862 0.080870314 110.73183 28.495677 6770.7426 1.1449969e+08 0.032044133 0.088680894 110.79979 28.335038 6773.4980 1.0963243e+08 0.027096039 0.095363917 110.87027 28.174398 6776.2534 1.0264133e+08 0.022212948 0.10204694 110.94442 28.013759 6779.0088 95095217. 0.017325714 0.10872996 111.01124 27.868981 6781.7642 91558001. 0.012210334 0.11541299 111.07611 27.728424 6784.5196 87856704. 0.0070575878 0.12209601 111.14389 27.568988 6787.2749 88172360. 0.0017020974 0.12877903 111.21384 27.408349 6790.0303 85666559. -0.0035737602 0.13546205 111.28798 27.247711 6792.7857 81262298. -0.0088341226 0.14214508 111.35180 27.101190 6795.5411 76207377. -0.014136463 0.14882810 111.41127 26.960634 6798.2965 70886272. -0.019499125 0.15551112 111.47798 26.802943 6801.0519 70257904. -0.024965552 0.16219415 111.54595 26.642303 6803.8073 70639528. -0.030407251 0.16887717 111.61391 26.481663 6806.5626 71053014. -0.035808445 0.17556019 111.68187 26.321023 6809.3180 70053465. -0.041213370 0.18224321 111.74985 26.160384 6812.0734 68102377. -0.046654567 0.18892624 111.82397 25.999744 6814.8288 67177011. -0.052070198 0.19560926 111.89342 25.841447 6817.5842 64730732. -0.057565842 0.20229228 111.95521 25.686986 6820.3396 60946376. -0.063193133 0.20897531 112.01523 25.543100 6823.0950 58262675. -0.068807106 0.21565833 112.07469 25.402544 6825.8503 57668477. -0.074250820 0.22234135 112.14190 25.243697 6828.6057 56085808. -0.079813297 0.22902437 112.20986 25.083058 6831.3611 55116032. -0.085335110 0.23570740 112.27783 24.922419 6834.1165 52039025. -0.091248910 0.24239042 112.35342 24.743739 6836.8719 48083931. -0.097552575 0.24907344 112.42770 24.565760 6839.6273 47056730. -0.10349911 0.25575647 112.48948 24.411300 6842.3827 44766907. -0.11012842 0.26243949 112.55539 24.252712 6845.1381 45072163. -0.11657573 0.26912251 112.62305 24.092073 6847.8934 47741705. -0.12319733 0.27580553 112.68484 23.931434 6850.6488 46932998. -0.13407293 0.28248856 112.74928 23.770794 6853.4042 46796654. -0.17346004 0.28917158 112.81724 23.610153 6856.1596 43995845. -0.15034653 0.29585460 112.88018 23.454554 6858.9150 39154569. -0.083744157 0.30253763 112.94395 23.293738