# # 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 = 49.049159 km # Date (UTC) = 2016-01-21T09:17:03.137 # Date (julian) = 2457408.88684186 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.7419 7.0704081e+10 0.059673469 0.033110032 -15.830433 55.018022 6505.1696 6.2631472e+10 0.070801612 0.033842103 -16.025725 54.860220 6507.5974 5.5015311e+10 0.081993761 0.034574175 -16.210229 54.709808 6510.0251 4.8745386e+10 0.093477499 0.035306247 -16.373540 54.573715 6512.4528 4.4510517e+10 0.10559761 0.036038318 -16.536851 54.434728 6514.8805 4.1316389e+10 0.11825428 0.036770390 -16.700162 54.293193 6517.3082 3.8600136e+10 0.13133396 0.037502462 -16.859691 54.151658 6519.7360 3.5650346e+10 0.14456779 0.038234533 -17.017559 54.010122 6522.1637 3.2392908e+10 0.15741837 0.038960110 -17.197969 53.853821 6524.5914 2.9057985e+10 0.16433952 0.039637053 -17.373138 53.699945 6527.0191 2.6094019e+10 0.17016456 0.040730339 -17.525562 53.558407 6529.4468 2.3690183e+10 0.17418661 0.042947530 -17.677986 53.416870 6531.8745 2.1732561e+10 0.17821860 0.046501578 -17.830409 53.275335 6534.3023 1.9948488e+10 0.17987999 0.048029109 -17.982832 53.137115 6536.7300 1.8322607e+10 0.18028174 0.048443625 -18.135256 53.001023 6539.1577 1.6748543e+10 0.18005255 0.049834506 -18.283477 52.860726 6541.5854 1.5212399e+10 0.17851016 0.051136687 -18.430458 52.719189 6544.0131 1.3880765e+10 0.17544685 0.051654993 -18.577437 52.577653 6546.4408 1.2695402e+10 0.17209484 0.052827266 -18.726196 52.433804 6548.8686 1.1598780e+10 0.16846249 0.053927027 -18.891326 52.268672 6551.2963 1.0457517e+10 0.16549077 0.055339748 -19.044104 52.115895 6553.7240 9.4310722e+09 0.16274795 0.054971126 -19.185640 51.974359 6556.1517 8.5755232e+09 0.15983643 0.053990822 -19.327177 51.832822 6558.5794 7.8860736e+09 0.15703226 0.052745563 -19.468713 51.691285 6561.0071 7.3197645e+09 0.15336725 0.051369161 -19.605624 51.549750 6563.4349 6.7866071e+09 0.15028442 0.049425335 -19.741716 51.408215 6565.8626 6.3490810e+09 0.14708975 0.047338930 -19.877809 51.266679 6568.2903 5.8590497e+09 0.14495621 0.045504813 -20.013902 51.125143 6570.7180 5.4079824e+09 0.14284343 0.044620085 -20.149994 50.983606 6573.1457 5.0129030e+09 0.14048749 0.043540539 -20.284243 50.842069 6575.5734 4.6909446e+09 0.13758386 0.041799363 -20.414892 50.700533 6578.0012 4.4556184e+09 0.13433050 0.038647780 -20.548272 50.558997 6580.4289 4.1781640e+09 0.13098818 0.036124407 -20.684365 50.417460 6582.8566 3.9256686e+09 0.12806979 0.035060691 -20.813220 50.275924 6585.2843 3.6873024e+09 0.12503058 0.033743472 -20.938425 50.134389 6587.7120 3.4380182e+09 0.12229398 0.033316128 -21.068137 49.992851 6590.1397 3.2259944e+09 0.11909653 0.030802117 -21.198783 49.851314 6592.5675 3.0328529e+09 0.11542054 0.027522346 -21.324042 49.709779 6594.9952 2.8652825e+09 0.11170784 0.025626216 -21.449247 49.568243 6597.4229 2.6968129e+09 0.10777292 0.025589277 -21.574451 49.426708 6599.8506 2.5189308e+09 0.10565794 0.024980890 -21.697932 49.285172 6602.2783 2.3578638e+09 0.10447383 0.027279116 -21.817693 49.143635 6604.7060 2.2051946e+09 0.10320883 0.026490505 -21.937455 48.999486 6607.1338 2.0754691e+09 0.10218823 0.025442857 -22.057217 48.852506 6609.5615 1.9360455e+09 0.099235385 0.023872719 -22.176978 48.709025 6611.9892 1.8120309e+09 0.096853690 0.024327638 -22.296740 48.567490 6614.4169 1.7036579e+09 0.096040047 0.023653252 -22.404437 48.440211 6616.8446 1.6063866e+09 0.094742186 0.023414864 -22.509227 48.316369 6619.2724 1.5167285e+09 0.094196744 0.024591628 -22.620746 48.180029 6621.7001 1.4276763e+09 0.093312866 0.024857406 -22.735063 48.038494 6624.1278 1.3387111e+09 0.091496975 0.024930713 -22.849380 47.892225 6626.5555 1.2583593e+09 0.090000750 0.025883141 -22.963698 47.745421 6628.9832 1.1830319e+09 0.088576827 0.026102292 -23.078016 47.603886 6631.4109 1.1148791e+09 0.086780632 0.025972509 -23.192334 47.462350 6633.8387 1.0531825e+09 0.085173018 0.026298673 -23.306651 47.320813 6636.2664 9.9449233e+08 0.083505505 0.026446310 -23.419017 47.179277 6638.6941 9.4249742e+08 0.082216160 0.025641403 -23.527892 47.037741 6641.1218 8.9000607e+08 0.082620346 0.025148714 -23.636766 46.893367 6643.5495 8.4655461e+08 0.081722646 0.025275590 -23.745641 46.746386 6645.9772 8.0170477e+08 0.080390269 0.025909485 -23.854515 46.603131 6648.4050 7.5647305e+08 0.079062997 0.027235364 -23.963388 46.461593 6650.8327 7.1253926e+08 0.078231225 0.026445860 -24.072263 46.320058 6653.2604 6.7594822e+08 0.077580176 0.027658608 -24.181080 46.178466 6655.6881 6.4764942e+08 0.075821437 0.027894544 -24.284511 46.031486 6658.1158 6.2478072e+08 0.074207430 0.030266497 -24.387941 45.885450 6660.5435 5.9561515e+08 0.072876236 0.032120051 -24.491370 45.743915 6662.9713 5.6008548e+08 0.071890193 0.032499338 -24.590450 45.608333 6665.3990 5.3648261e+08 0.071556322 0.027893394 -24.680950 45.484490 6667.8267 5.1539850e+08 0.071171151 0.027407116 -24.774515 45.356453 6670.2544 4.9779429e+08 0.070759354 0.027210768 -24.877945 45.214918 6672.6821 4.7917427e+08 0.070634190 0.027274973 -24.979198 45.071205 6675.1098 4.4871067e+08 0.069332975 0.030008749 -25.077185 44.924225 6677.5376 4.2417447e+08 0.067600157 0.031594018 -25.175171 44.780309 6679.9653 4.0472747e+08 0.067898379 0.029470109 -25.273157 44.638772 6682.3930 3.8392840e+08 0.068916511 0.030724806 -25.371143 44.497236 6684.8207 3.6910437e+08 0.069088350 0.032695740 -25.469130 44.355701 6687.2484 3.4674417e+08 0.067431543 0.034204348 -25.567117 44.209324 6689.6761 3.2636122e+08 0.065047997 0.033407384 -25.665104 44.062627 6692.1039 3.0657855e+08 0.064124365 0.032644718 -25.763091 43.921092 6694.5316 2.8766084e+08 0.063490617 0.030515988 -25.859907 43.779556 6696.9593 2.7282171e+08 0.063187230 0.030074354 -25.952449 43.638019 6699.3870 2.5989646e+08 0.061814018 0.031233328 -26.047051 43.494424 6701.8147 2.4651152e+08 0.059986707 0.032604889 -26.145037 43.347444 6704.2424 2.3505216e+08 0.060325787 0.036296609 -26.240070 43.203423 6706.6702 2.2443227e+08 0.060199302 0.039612776 -26.332597 43.061912 6709.0979 2.1488163e+08 0.059588787 0.041070285 -26.421304 42.920382 6711.5256 2.0685291e+08 0.057610547 0.041290222 -26.508403 42.778844 6713.9533 1.9490481e+08 0.055358845 0.047134568 -26.600221 42.632590 6716.3810 1.8437885e+08 0.053542246 0.048962589 -26.692764 42.485775 6718.8088 1.7301230e+08 0.051087059 0.051071983 -26.785307 42.344238 6721.2365 1.6380552e+08 0.051385300 0.050375148 -26.876800 42.202701 6723.6642 1.5614542e+08 0.049732156 0.049739372 -26.963899 42.061166 6726.0919 1.4752431e+08 0.045526985 0.040952196 -27.050998 41.917693 6728.5196 1.3913854e+08 0.044748497 0.040364571 -27.138097 41.770713 6730.9473 1.3393581e+08 0.042824127 0.041677817 -27.225196 41.626556 6733.3751 1.2628250e+08 0.041313946 0.045960584 -27.312296 41.485018 6735.8028 1.2213711e+08 0.042169803 0.050145633 -27.399395 41.343482 6738.2305 1.1912346e+08 0.043348211 0.058590034 -27.486494 41.201947 6740.6582 1.1138560e+08 0.042386336 0.065174792 -27.573593 41.055811 6743.0859 1.0842914e+08 0.038315547 0.071627069 -27.660649 40.908875 6745.5136 1.0018891e+08 0.034864729 0.078782816 -27.742304 40.767339 6747.9414 96880337. 0.030302569 0.067037088 -27.823960 40.625804 6750.3691 99007809. 0.027373608 0.072634339 -27.905615 40.484267 6752.7968 92604639. 0.024115519 0.073212441 -27.987270 40.342730 6755.2245 87981756. 0.021672578 0.074506913 -28.068927 40.201195 6757.6522 79374924. 0.019118012 0.074760728 -28.150583 40.056953 6760.0799 76256658. 0.019512427 0.076213716 -28.232238 39.909972 6762.5077 75240993. 0.023619217 0.077231950 -28.322878 39.751012 6764.9354 71317243. 0.026063283 0.079528097 -28.416981 39.587898 6767.3631 65416213. 0.024389819 0.081569196 -28.498636 39.446363 6769.7908 61575330. 0.018232115 0.086372323 -28.580292 39.304827 6772.2185 60370110. 0.013012256 0.092260604 -28.661947 39.163292 6774.6462 57612502. 0.0070164786 0.098148885 -28.741362 39.019516 6777.0740 60128231. 0.0011536144 0.10403717 -28.817575 38.872536 6779.5017 57007502. -0.0088532609 0.10992545 -28.893787 38.728683 6781.9294 56196167. -0.044812727 0.11581373 -28.969999 38.587145 6784.3571 54547333. -0.021882256 0.12170201 -29.055580 38.428207 6786.7848 50112675. 0.035328651 0.12759029 -29.142425 38.266924