# # 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 = 37.487066 km # Date (UTC) = 2010-12-08T05:00:54.061 # Date (julian) = 2455538.70895903 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.8068 1.7274621e+11 0.064473296 0.033431125 39.287852 47.370173 6505.6205 1.4830984e+11 0.072200624 0.033978056 39.211937 47.287932 6507.4343 1.2794339e+11 0.080082068 0.034524988 39.135712 47.205339 6509.2480 1.1052338e+11 0.088137907 0.035071919 39.053865 47.116375 6511.0617 9.5831516e+10 0.096422724 0.035618851 38.972019 47.027412 6512.8755 8.3137246e+10 0.10491629 0.036165782 38.889311 46.938448 6514.6892 7.2473838e+10 0.11364614 0.036712713 38.803905 46.849484 6516.5030 6.3444548e+10 0.12261688 0.037259645 38.718499 46.760520 6518.3167 5.6056258e+10 0.13192015 0.037806576 38.639929 46.674462 6520.1305 5.0317773e+10 0.14166729 0.038353508 38.570341 46.592222 6521.9442 4.5835248e+10 0.15185804 0.038900439 38.500754 46.509982 6523.7580 4.1981191e+10 0.15725071 0.039366981 38.427849 46.425923 6525.5717 3.8186355e+10 0.16232063 0.039716962 38.346002 46.336959 6527.3855 3.4565655e+10 0.16734772 0.040996346 38.264156 46.247995 6529.1992 3.1347514e+10 0.17054778 0.042553168 38.186494 46.163579 6531.0130 2.8712778e+10 0.17331128 0.045247596 38.113733 46.084492 6532.8267 2.6551106e+10 0.17710206 0.047374852 38.040972 46.005404 6534.6405 2.4610739e+10 0.17838445 0.048123729 37.966556 45.922292 6536.4542 2.2637231e+10 0.17783973 0.048196927 37.888268 45.829770 6538.2680 2.0694635e+10 0.17796702 0.049287181 37.809980 45.737247 6540.0817 1.8920753e+10 0.17757746 0.050892721 37.735948 45.651303 6541.8955 1.7436724e+10 0.17518784 0.051036128 37.666360 45.572226 6543.7092 1.6243419e+10 0.17319749 0.051568038 37.596771 45.493148 6545.5230 1.5162837e+10 0.17167345 0.052460253 37.525497 45.410829 6547.3367 1.4068544e+10 0.17041000 0.053415422 37.450768 45.321866 6549.1505 1.2975510e+10 0.16847269 0.054119646 37.376039 45.232902 6550.9642 1.1987291e+10 0.16699705 0.055226798 37.303971 45.147420 6552.7780 1.1154796e+10 0.16606101 0.055390946 37.234383 45.065179 6554.5917 1.0490061e+10 0.16422833 0.054844798 37.164794 44.982939 6556.4055 9.8818804e+09 0.16205849 0.053953510 37.093374 44.898304 6558.2192 9.2601103e+09 0.16015568 0.053052482 37.018645 44.809340 6560.0330 8.6324102e+09 0.15802430 0.052244561 36.943916 44.720377 6561.8467 8.0385622e+09 0.15528850 0.050955425 36.873717 44.635079 6563.6605 7.5479105e+09 0.15239539 0.049164329 36.807284 44.552826 6565.4742 7.1552173e+09 0.14996631 0.047779888 36.740850 44.470574 6567.2880 6.7918280e+09 0.14759288 0.046373683 36.672592 44.385737 6569.1017 6.3957175e+09 0.14488081 0.044859046 36.601421 44.296774 6570.9155 5.9818876e+09 0.14269631 0.044538281 36.530250 44.207810 6572.7292 5.5694414e+09 0.14033430 0.043812538 36.461808 44.122712 6574.5430 5.2246591e+09 0.13715757 0.042594208 36.395383 44.040472 6576.3567 4.9382963e+09 0.13394828 0.040960777 36.328958 43.958232 6578.1705 4.6635762e+09 0.13106150 0.038380390 36.260570 43.873212 6579.9842 4.3980721e+09 0.12867175 0.036529417 36.189399 43.784248 6581.7980 4.1081445e+09 0.12660564 0.035354966 36.118228 43.695285 6583.6117 3.8452008e+09 0.12476969 0.034712031 36.051829 43.612286 6585.4255 3.6229552e+09 0.12299172 0.033630604 35.988567 43.533209 6587.2392 3.4399153e+09 0.12122339 0.033211376 35.925305 43.454131 6589.0530 3.2815370e+09 0.11913296 0.032940851 35.858542 43.369106 6590.8667 3.0950252e+09 0.11681893 0.029449796 35.787361 43.276571 6592.6805 2.9026073e+09 0.11483823 0.027412564 35.716179 43.184036 6594.4942 2.7218609e+09 0.11253508 0.025901210 35.652004 43.100009 6596.3080 2.5663521e+09 0.10982663 0.025725874 35.591906 43.020931 6598.1217 2.4496721e+09 0.10776211 0.025349043 35.531808 42.941854 6599.9355 2.3238980e+09 0.10666497 0.024985995 35.466497 42.856447 6601.7492 2.1916407e+09 0.10577534 0.027398538 35.395325 42.763924 6603.5630 2.0581325e+09 0.10416166 0.026329986 35.324154 42.671401 6605.3767 1.9354936e+09 0.10330372 0.026981096 35.260298 42.587760 6607.1905 1.8399478e+09 0.10144897 0.025330855 35.200199 42.508683 6609.0042 1.7531810e+09 0.098163983 0.023707190 35.140101 42.429606 6610.8180 1.6684558e+09 0.095101899 0.024784546 35.076252 42.343817 6612.6317 1.5769854e+09 0.093448729 0.023848743 35.008638 42.251296 6614.4455 1.4858679e+09 0.091916548 0.023633570 34.941025 42.158774 6616.2592 1.4033050e+09 0.090119482 0.023322986 34.880764 42.075508 6618.0730 1.3332287e+09 0.089401057 0.023825909 34.823822 41.996421 6619.8867 1.2778461e+09 0.088769225 0.024739869 34.766880 41.917333 6621.7005 1.2207254e+09 0.087925627 0.024857268 34.704304 41.833031 6623.5142 1.1609602e+09 0.086645774 0.024682342 34.636690 41.744067 6625.3280 1.0980829e+09 0.085867147 0.025788989 34.569077 41.655103 6627.1417 1.0361686e+09 0.084245481 0.025371560 34.504019 41.563584 6628.9555 9.7462018e+08 0.083571658 0.026091031 34.439965 41.471062 6630.7692 9.1516471e+08 0.082407679 0.025930197 34.375911 41.378539 6632.5830 8.6432071e+08 0.081397299 0.026102250 34.318318 41.298221 6634.3967 8.1972351e+08 0.080249957 0.026355782 34.261383 41.219143 6636.2105 7.8599641e+08 0.078990448 0.026468013 34.204447 41.140066 6638.0242 7.4945110e+08 0.078246150 0.025670586 34.142199 41.050956 6639.8380 7.0954645e+08 0.078122541 0.025328561 34.078145 40.958434 6641.6517 6.7168359e+08 0.078376225 0.025150513 34.014091 40.865912 6643.4655 6.3408971e+08 0.077778338 0.025262901 33.956701 40.785975 6645.2792 6.0299529e+08 0.076990915 0.025582494 33.899767 40.706898 6647.0930 5.7802763e+08 0.075940598 0.026486735 33.842832 40.627821 6648.9067 5.5417718e+08 0.074817923 0.027571254 33.780375 40.538317 6650.7205 5.2948475e+08 0.074494060 0.026420176 33.716312 40.445780 6652.5342 5.0440733e+08 0.074070609 0.027397510 33.652248 40.353244 6654.3480 4.7620135e+08 0.073245277 0.027887982 33.591627 40.264155 6656.1617 4.4707137e+08 0.071661957 0.028165368 33.531131 40.175191 6657.9755 4.2279645e+08 0.070534172 0.030032638 33.471676 40.087758 6659.7892 4.0314337e+08 0.069361841 0.031669964 33.417904 40.008681 6661.6030 3.8701184e+08 0.068257417 0.032842060 33.364132 39.929603 6663.4167 3.7300235e+08 0.067396366 0.032367727 33.310349 39.850505 6665.2305 3.5436128e+08 0.067336856 0.028169481 33.249909 39.758094 6667.0442 3.3977948e+08 0.067106339 0.027119704 33.189413 39.665572 6668.8580 3.2424242e+08 0.066165288 0.028230025 33.128917 39.573702 6670.6717 3.0501018e+08 0.066403553 0.027017431 33.068422 39.484738 6672.4855 2.8922341e+08 0.066241326 0.027160992 33.007928 39.395775 6674.2992 2.7452476e+08 0.065403614 0.029207210 32.949941 39.310499 6676.1130 2.6352154e+08 0.063473292 0.031786538 32.896167 39.231422 6677.9267 2.5561760e+08 0.062667137 0.031040777 32.842394 39.152345 6679.7405 2.4245575e+08 0.062672843 0.029655874 32.787199 39.070423 6681.5542 2.2931875e+08 0.063392733 0.030082553 32.726704 38.977901 6683.3680 2.2100767e+08 0.063744762 0.031727856 32.666210 38.885380 6685.1817 2.1106933e+08 0.063515279 0.032896786 32.607140 38.794281 6686.9955 1.9874267e+08 0.061986207 0.034340268 32.550194 38.705304 6688.8092 1.8501528e+08 0.059579653 0.033971987 32.493249 38.616326 6690.6230 1.7281519e+08 0.058648330 0.033044470 32.436309 38.525251 6692.4367 1.6588364e+08 0.057807754 0.032258185 32.379372 38.432728 6694.2505 1.6129598e+08 0.056993874 0.030909971 32.322436 38.340205 6696.0642 1.5520383e+08 0.056860823 0.029702470 32.270444 38.258192 6697.8780 1.4735814e+08 0.056191651 0.030202375 32.219835 38.179114 6699.6917 1.4118681e+08 0.054928400 0.030952168 32.169225 38.100037 6701.5055 1.3397772e+08 0.053483712 0.032151122 32.114692 38.014829 6703.3192 1.2818271e+08 0.053678389 0.034474037 32.057755 37.925865 6705.1330 1.2408906e+08 0.053966597 0.036905008 32.000817 37.836902 6706.9467 1.1996149e+08 0.053782066 0.040094104 31.943880 37.747938 6708.7605 1.1669000e+08 0.053519039 0.040871708 31.886943 37.658974 6710.5742 1.0910921e+08 0.052366153 0.040608892 31.830006 37.570001 6712.3880 1.0358398e+08 0.050754840 0.042550296 31.773070 37.477489 6714.2017 96082103. 0.049041401 0.047318574 31.716133 37.384967 6716.0155 93714955. 0.047801746 0.048424150 31.659872 37.293121 6717.8292 91583530. 0.046220341 0.049822977 31.606494 37.204158 6719.6430 89219778. 0.045025704 0.050758968 31.553116 37.115194 6721.4567 84437652. 0.045338453 0.050441512 31.499735 37.026226 6723.2705 78675245. 0.044089196 0.049519791 31.446349 36.937249 6725.0842 72153979. 0.039985090 0.041523411 31.392963 36.848272 6726.8980 67983814. 0.038104071 0.040959466 31.337553 36.757274 6728.7117 64361148. 0.036964630 0.040636842 31.280616 36.664752 6730.5255 60760562. 0.032922740 0.041099388 31.223679 36.572229 6732.3392 59787581. 0.016717218 0.043802659 31.169445 36.482410 6734.1530 57962837. 0.028332515 0.049344396 31.116067 36.393446 6735.9667 58803436. 0.056735472 0.050319678 31.062689 36.304482