# # 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 = 46.130361 km # Date (UTC) = 2010-12-15T09:26:32.660 # Date (julian) = 2455545.89343356 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.6086 1.1734941e+11 0.085790738 0.034577564 109.84846 35.381976 6509.9413 9.8851618e+10 0.096569475 0.035280989 109.92169 35.258403 6512.2740 8.2817175e+10 0.10741090 0.035984413 109.99326 35.137628 6514.6068 7.0569160e+10 0.11851572 0.036687838 110.05835 35.027787 6516.9395 6.1501300e+10 0.12999886 0.037391263 110.12344 34.917947 6519.2722 5.4373253e+10 0.14182746 0.038094688 110.18853 34.811140 6521.6049 4.8433837e+10 0.15395319 0.038798113 110.25362 34.705369 6523.9376 4.3264574e+10 0.16067086 0.039411501 110.31755 34.598424 6526.2703 3.8833477e+10 0.16563598 0.039951513 110.37857 34.488569 6528.6031 3.4986301e+10 0.17027647 0.041920894 110.43960 34.378714 6530.9358 3.1605682e+10 0.17327470 0.045138774 110.50400 34.268871 6533.2685 2.8710021e+10 0.17667308 0.047633691 110.56909 34.159031 6535.6012 2.5951573e+10 0.17697024 0.047963491 110.63551 34.044089 6537.9339 2.3210973e+10 0.17784835 0.049125534 110.70416 33.920516 6540.2667 2.0660919e+10 0.17784193 0.050980075 110.77139 33.800265 6542.5994 1.8431162e+10 0.17602441 0.051229792 110.83241 33.694494 6544.9321 1.6687655e+10 0.17449822 0.052400475 110.89343 33.588722 6547.2648 1.5284243e+10 0.17159819 0.053388065 110.95742 33.479987 6549.5975 1.4044618e+10 0.16828066 0.054575204 111.02251 33.370147 6551.9302 1.2928765e+10 0.16509942 0.055562280 111.08540 33.260302 6554.2630 1.1956159e+10 0.16144460 0.054837898 111.14236 33.150447 6556.5957 1.1041097e+10 0.15854103 0.053925550 111.19932 33.040592 6558.9284 1.0112892e+10 0.15538699 0.052448199 111.26578 32.923309 6561.2611 9.1945802e+09 0.15224371 0.051244011 111.33443 32.804313 6563.5938 8.3234928e+09 0.14928653 0.049241443 111.39830 32.691064 6565.9265 7.6130456e+09 0.14649632 0.047266291 111.45932 32.581225 6568.2593 7.0346692e+09 0.14451711 0.045533336 111.52034 32.472075 6570.5920 6.5321841e+09 0.14248255 0.044672290 111.58137 32.366302 6572.9247 6.0712892e+09 0.14026020 0.043700604 111.64239 32.260529 6575.2574 5.6516802e+09 0.13759571 0.042116436 111.70052 32.151853 6577.5901 5.2873498e+09 0.13453224 0.039293412 111.75749 32.041997 6579.9229 4.9433899e+09 0.13135797 0.036563164 111.81625 31.929825 6582.2556 4.5888363e+09 0.12840249 0.035224247 111.88032 31.810830 6584.5883 4.2336793e+09 0.12565355 0.034195048 111.94419 31.692464 6586.9210 3.8980438e+09 0.12300189 0.033159390 112.00521 31.582623 6589.2537 3.6144624e+09 0.12018805 0.032542611 112.06623 31.472783 6591.5864 3.3743364e+09 0.11673667 0.028540178 112.12477 31.365426 6593.9192 3.1571514e+09 0.11329203 0.026247681 112.18173 31.259654 6596.2519 2.9610670e+09 0.10935801 0.025726129 112.23868 31.153262 6598.5846 2.7842330e+09 0.10613111 0.025128059 112.29564 31.043422 6600.9173 2.6258735e+09 0.10474926 0.026875701 112.35259 30.933581 6603.2500 2.4647119e+09 0.10298187 0.026515256 112.41132 30.817372 6605.5827 2.3002159e+09 0.10215263 0.027153923 112.47082 30.698359 6607.9155 2.1383426e+09 0.10038762 0.023899293 112.52903 30.584021 6610.2482 1.9958459e+09 0.097511479 0.024240113 112.58598 30.474181 6612.5809 1.8776282e+09 0.095806541 0.023886724 112.64293 30.364551 6614.9136 1.7765157e+09 0.094861245 0.023311044 112.69989 30.258779 6617.2463 1.6841125e+09 0.093654193 0.023520921 112.75684 30.153007 6619.5791 1.5858613e+09 0.093188337 0.024665631 112.81531 30.039388 6621.9118 1.4853007e+09 0.092274353 0.024787236 112.87481 29.920392 6624.2445 1.3873641e+09 0.090601751 0.024993184 112.93327 29.805136 6626.5772 1.2983072e+09 0.089176611 0.025855487 112.99022 29.695296 6628.9099 1.2293380e+09 0.087812879 0.026072534 113.04717 29.585455 6631.2426 1.1669035e+09 0.086059506 0.025955414 113.10027 29.479468 6633.5754 1.1058144e+09 0.084594030 0.026252705 113.15316 29.373682 6635.9081 1.0514446e+09 0.082914063 0.026535968 113.20930 29.261390 6638.2408 9.9172468e+08 0.081781759 0.025661151 113.26880 29.142394 6640.5735 9.3395705e+08 0.081888686 0.025200482 113.32626 29.026215 6642.9062 8.8386353e+08 0.081539410 0.025188781 113.37915 28.916375 6645.2390 8.3577220e+08 0.080334477 0.025563624 113.43204 28.806535 6647.5717 7.9336785e+08 0.079001087 0.026738766 113.49054 28.688918 6649.9044 7.4591306e+08 0.078028701 0.026387037 113.55004 28.569922 6652.2371 6.9774011e+08 0.077410137 0.027315758 113.60514 28.459714 6654.5698 6.5976450e+08 0.076479579 0.027793477 113.65803 28.353942 6656.9025 6.2810669e+08 0.074625822 0.028815570 113.71091 28.248167 6659.2353 6.0083050e+08 0.073274249 0.031785524 113.76381 28.142381 6661.5680 5.7199069e+08 0.072164238 0.032824231 113.81670 28.036595 6663.9007 5.4502806e+08 0.070998110 0.032233609 113.87454 27.920920 6666.2334 5.1656427e+08 0.071309952 0.026954078 113.93404 27.801923 6668.5661 4.8873321e+08 0.070540473 0.027971757 113.98752 27.688088 6670.8988 4.6205966e+08 0.070633757 0.026912212 114.03633 27.578248 6673.2316 4.3837120e+08 0.070394235 0.027805537 114.08628 27.467441 6675.5643 4.1675522e+08 0.068575590 0.030879162 114.14578 27.348446 6677.8970 3.9228005e+08 0.067348083 0.031083041 114.20527 27.229451 6680.2297 3.7061081e+08 0.067766936 0.029491022 114.25494 27.122628 6682.5624 3.5274123e+08 0.068638170 0.030854264 114.30376 27.016856 6684.8952 3.3771380e+08 0.068698398 0.032699517 114.35752 26.904969 6687.2279 3.2295243e+08 0.066910978 0.034215815 114.41701 26.785974 6689.5606 3.0768065e+08 0.064387531 0.033511406 114.47355 26.670644 6691.8933 2.9110655e+08 0.063365187 0.032790502 114.52237 26.564858 6694.2260 2.7586987e+08 0.062456864 0.030944244 114.57120 26.459072 6696.5587 2.6298423e+08 0.062172340 0.029907931 114.62502 26.342458 6698.8915 2.5098077e+08 0.060863821 0.031441446 114.67994 26.223463 6701.2242 2.3719757e+08 0.058910326 0.031738376 114.73486 26.104467 6703.5569 2.2375500e+08 0.058755674 0.035068759 114.78978 25.985472 6705.8896 2.1007963e+08 0.058782051 0.038250155 114.84196 25.872424 6708.2223 2.0150972e+08 0.058362376 0.040285686 114.89078 25.766651 6710.5550 1.9647087e+08 0.056860838 0.040605138 114.93961 25.660854 6712.8878 1.8595346e+08 0.054736316 0.043478240 114.99446 25.541993 6715.2205 1.7536682e+08 0.052612921 0.047604091 115.04938 25.422998 6717.5532 1.6335986e+08 0.050404954 0.049840050 115.10430 25.304002 6719.8859 1.5417772e+08 0.048859339 0.050528153 115.15923 25.185007 6722.2186 1.4607545e+08 0.048758788 0.050334914 115.20783 25.076755 6724.5514 1.4201209e+08 0.045325532 0.045322510 115.25258 24.975037 6726.8841 1.3888150e+08 0.042482522 0.040959341 115.29901 24.870487 6729.2168 1.3345802e+08 0.041906108 0.040900932 115.35393 24.751491 6731.5495 1.2973289e+08 0.039903562 0.042843644 115.40885 24.632496 6733.8822 1.1893146e+08 0.038521126 0.048714159 115.46377 24.513501 6736.2149 1.1395475e+08 0.040149823 0.051167606 115.51869 24.394505 6738.5477 1.1150286e+08 0.041234590 0.060336208 115.56998 24.275510 6740.8804 1.0407467e+08 0.040171530 0.065554335 115.62032 24.156514 6743.2131 99450291. 0.036127178 0.072484972 115.67345 24.037519 6745.5458 91737618. 0.033140516 0.078796341 115.72838 23.918523 6747.8785 87270521. 0.028769610 0.067058717 115.78136 23.801469 6750.2112 87525267. 0.026153610 0.072364846 115.83170 23.687051 6752.5440 83697921. 0.023205261 0.073505006 115.88204 23.571537 6754.8767 79333203. 0.021299767 0.074803654 115.93239 23.452541 6757.2094 75576755. 0.018433383 0.076104579 115.98273 23.333545 6759.5421 72491690. 0.019102673 0.075950777 116.03308 23.214549 6761.8748 68486719. 0.021723747 0.078040503 116.08342 23.095554 6764.2076 62477902. 0.023923435 0.079493229 116.13775 22.980522 6766.5403 57816300. 0.022721603 0.080935853 116.19268 22.866086 6768.8730 55526647. 0.013532133 0.083997248 116.24447 22.748529 6771.2057 55503075. -0.016914672 0.089804071 116.29481 22.629533 6773.5384 55028612. 0.0015746755 0.095461938 116.34516 22.510538 6775.8711 52374494. 0.046246228 0.10111980 116.39550 22.391543