# # 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 = 38.517623 km # Date (UTC) = 2016-12-17T10:39:27.009 # Date (julian) = 2457739.94406260 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6508.7689 6.7150273e+10 0.095087264 0.034927436 97.105745 26.632687 6510.8851 6.0043466e+10 0.10551746 0.035565586 97.153732 26.533026 6513.0014 5.3405135e+10 0.11603265 0.036203737 97.197539 26.442040 6515.1176 4.8393965e+10 0.12687350 0.036841887 97.240718 26.352358 6517.2339 4.4316925e+10 0.13795807 0.037480038 97.283898 26.262676 6519.3501 4.0397435e+10 0.14915281 0.038118189 97.331197 26.161268 6521.4664 3.6553104e+10 0.16041899 0.038756339 97.379174 26.057930 6523.5826 3.2779917e+10 0.16717601 0.039323517 97.426602 25.955140 6525.6989 2.9456323e+10 0.17186964 0.039702452 97.470897 25.855480 6527.8151 2.6504307e+10 0.17654325 0.041308273 97.515192 25.755820 6529.9314 2.3913474e+10 0.18017168 0.043719414 97.561106 25.656165 6532.0476 2.1597581e+10 0.18245077 0.046723996 97.609084 25.556517 6534.1639 1.9511177e+10 0.18274240 0.047990407 97.657062 25.456869 6536.2802 1.7643113e+10 0.18176540 0.048041163 97.702345 25.357222 6538.3964 1.6004769e+10 0.18159402 0.049349711 97.746634 25.257574 6540.5127 1.4510999e+10 0.18010547 0.051096297 97.790999 25.157926 6542.6289 1.3165918e+10 0.17706464 0.051241009 97.838977 25.058279 6544.7452 1.1946228e+10 0.17383046 0.052248843 97.886954 24.958631 6546.8614 1.0848680e+10 0.17006532 0.053173338 97.933785 24.858979 6548.9777 9.8797626e+09 0.16615707 0.053959613 97.978080 24.759319 6551.0939 8.9984145e+09 0.16335277 0.055268722 98.022375 24.659659 6553.2102 8.2207858e+09 0.16119200 0.055229411 98.068887 24.560006 6555.3264 7.5356395e+09 0.15855831 0.054579080 98.116864 24.460358 6557.4427 6.9207553e+09 0.15580743 0.053588628 98.164842 24.360710 6559.5589 6.3731368e+09 0.15262135 0.052324092 98.209527 24.261062 6561.6752 5.8627833e+09 0.14931816 0.051039959 98.253816 24.161415 6563.7915 5.3914204e+09 0.14593369 0.049012841 98.298105 24.061767 6565.9077 4.9691837e+09 0.14308432 0.047287687 98.342393 23.962119 6568.0240 4.5766921e+09 0.14101422 0.045749639 98.386682 23.862471 6570.1402 4.2181816e+09 0.13892727 0.044859429 98.430973 23.762818 6572.2565 3.8888014e+09 0.13654138 0.044083285 98.475264 23.663158 6574.3727 3.5859872e+09 0.13364963 0.042675990 98.519556 23.563497 6576.4890 3.3248121e+09 0.13078498 0.040808577 98.563846 23.463847 6578.6052 3.0870266e+09 0.12747332 0.037693893 98.608135 23.364199 6580.7215 2.8571526e+09 0.12439632 0.035854003 98.652423 23.264551 6582.8377 2.6489587e+09 0.12175085 0.035065824 98.696709 23.164903 6584.9540 2.4529731e+09 0.11899319 0.033995839 98.740995 23.065256 6587.0702 2.2830100e+09 0.11608842 0.033173932 98.785282 22.966882 6589.1865 2.1319498e+09 0.11313113 0.032675992 98.829571 22.870925 6591.3027 1.9852989e+09 0.10968164 0.028860296 98.873860 22.774967 6593.4190 1.8477346e+09 0.10667756 0.026712678 98.915806 22.676656 6595.5353 1.7160205e+09 0.10359713 0.025679078 98.956409 22.576995 6597.6515 1.6009788e+09 0.10129429 0.025517136 98.997012 22.477334 6599.7678 1.5021285e+09 0.10034657 0.024975907 99.041029 22.377686 6601.8840 1.4059328e+09 0.10009576 0.027462010 99.085318 22.278039 6604.0003 1.3121158e+09 0.098784048 0.026071435 99.129606 22.178392 6606.1165 1.2266138e+09 0.098629505 0.027294579 99.173892 22.078744 6608.2328 1.1482549e+09 0.096466874 0.023726217 99.218178 21.979097 6610.3490 1.0785539e+09 0.093689508 0.024336467 99.260593 21.881321 6612.4653 1.0114236e+09 0.092024841 0.023973111 99.301190 21.785364 6614.5815 9.4630636e+08 0.091119461 0.023539837 99.341788 21.689407 6616.6978 8.8974735e+08 0.089807792 0.023391817 99.382390 21.590495 6618.8140 8.3996275e+08 0.089185189 0.024385494 99.422992 21.490834 6620.9303 7.8930255e+08 0.088492651 0.025066984 99.463921 21.391501 6623.0465 7.4014196e+08 0.087139273 0.024509072 99.508210 21.295544 6625.1628 6.9328834e+08 0.085824512 0.025591877 99.552499 21.199587 6627.2791 6.5434947e+08 0.083825459 0.025424605 99.595389 21.102231 6629.3953 6.2223124e+08 0.082638051 0.026037632 99.635986 21.002585 6631.5116 5.9405658e+08 0.080819267 0.025982730 99.676584 20.902938 6633.6278 5.6110801e+08 0.079368484 0.026261863 99.720579 20.794950 6635.7441 5.2625068e+08 0.077853420 0.026511372 99.766252 20.682845 6637.8603 4.9187949e+08 0.076721698 0.025740051 99.810600 20.574954 6639.9766 4.6339582e+08 0.076467744 0.025279024 99.851197 20.478997 6642.0928 4.4163922e+08 0.076546696 0.025155495 99.891795 20.383039 6644.2091 4.1552576e+08 0.075728837 0.025366204 99.932394 20.285040 6646.3253 3.9461356e+08 0.075025401 0.026088553 99.972993 20.185379 6648.4416 3.6828161e+08 0.074370385 0.027259887 100.01359 20.085718 6650.5578 3.4850818e+08 0.074147729 0.026382943 100.05419 19.989177 6652.6741 3.3374893e+08 0.074000240 0.027435993 100.09479 19.893220 6654.7904 3.1531063e+08 0.073280226 0.027699528 100.13539 19.797263 6656.9066 3.0499449e+08 0.071628935 0.028819140 100.17598 19.701306 6659.0229 2.9046346e+08 0.070353425 0.031829830 100.21658 19.605349 6661.1391 2.7328294e+08 0.069391814 0.032605803 100.25933 19.502559 6663.2554 2.5754003e+08 0.068488856 0.032412444 100.30500 19.390453 6665.3716 2.4168631e+08 0.068357171 0.027938219 100.35060 19.278586 6667.4879 2.2883838e+08 0.068069169 0.027282662 100.39120 19.182616 6669.6041 2.1988106e+08 0.067389840 0.027735222 100.43180 19.086647 6671.7204 2.1448590e+08 0.067382955 0.026875614 100.47240 18.990681 6673.8366 2.0854032e+08 0.066776412 0.028710465 100.51300 18.894724 6675.9529 2.0377843e+08 0.064661486 0.031623486 100.55360 18.798767 6678.0691 1.9064390e+08 0.063814869 0.030890369 100.59722 18.693186 6680.1854 1.7390734e+08 0.064274372 0.029481451 100.64289 18.581080 6682.3016 1.5166169e+08 0.065274035 0.030655013 100.68692 18.472003 6684.4179 1.3721180e+08 0.065559113 0.032675298 100.72383 18.376046 6686.5342 1.2726736e+08 0.064629477 0.034071864 100.76073 18.280089 6688.6504 1.2107758e+08 0.062092675 0.033935327 100.79940 18.184131 6690.7667 1.1498881e+08 0.061077310 0.033028004 100.84000 18.088175 6692.8829 1.0428200e+08 0.060603337 0.031740052 100.88060 17.992218 6694.9992 97111359. 0.060353266 0.029860639 100.92191 17.887030 6697.1154 88977536. 0.060174486 0.030105872 100.96344 17.779060 6699.2317 82558721. 0.059216886 0.031376662 101.00463 17.675420 6701.3479 79604270. 0.057715472 0.031919957 101.04522 17.579464 6703.4642 79024181. 0.057851879 0.034836768 101.08582 17.483508 6705.5804 75900435. 0.058183125 0.037700505 101.12702 17.379744 6707.6967 72331954. 0.058122701 0.040087026 101.16854 17.271790 6709.8129 64133259. 0.057617866 0.040615472 101.20894 17.166744 6711.9292 58792276. 0.055990664 0.041749404 101.24585 17.070787 6714.0455 57408312. 0.054140306 0.047306825 101.28276 16.974830 6716.1617 58661256. 0.052577633 0.048639535 101.32434 16.872480 6718.2780 62101992. 0.050470343 0.050245312 101.37001 16.764527 6720.3942 60346380. 0.050124087 0.050374090 101.41459 16.658064 6722.5105 56521313. 0.050111489 0.049974137 101.45151 16.562095 6724.6267 54424880. 0.047098094 0.044693164 101.48842 16.466125 6726.7430 50861901. 0.045282135 0.040958068 101.52724 16.365180 6728.8592 52350299. 0.044951653 0.040845903 101.56876 16.257227 6730.9755 49549207. 0.044883223 0.041716403 101.61028 16.149273 6733.0917 48966827. 0.042232040 0.044422346 101.65180 16.041320 6735.2080 49105821. 0.039691013 0.049514224 101.69332 15.933366