# # 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 = 45.053415 km # Date (UTC) = 2012-01-04T07:07:13.570 # Date (julian) = 2455930.79668483 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6525.9885 3.4931799e+10 0.16457772 0.039669404 7.5269806 43.734357 6528.0039 3.2129379e+10 0.16854205 0.041445616 7.4531670 43.642969 6530.0194 2.9747438e+10 0.17138962 0.043855910 7.3793535 43.551582 6532.0349 2.7527478e+10 0.17292988 0.046713371 7.3009348 43.450215 6534.0504 2.5339439e+10 0.17276680 0.047958661 7.2218479 43.347402 6536.0659 2.3170799e+10 0.17151107 0.047849473 7.1427609 43.244588 6538.0814 2.1093268e+10 0.17211750 0.049196319 7.0636737 43.141776 6540.0969 1.9250635e+10 0.17191903 0.050899876 6.9845866 43.038963 6542.1124 1.7670543e+10 0.17004616 0.051044905 6.9126671 42.945467 6544.1279 1.6455965e+10 0.16859118 0.051748081 6.8423686 42.854078 6546.1434 1.5483019e+10 0.16723346 0.052582491 6.7720700 42.762689 6548.1589 1.4518159e+10 0.16669190 0.053715085 6.6932419 42.660213 6550.1743 1.3555107e+10 0.16598478 0.055029014 6.6141549 42.557401 6552.1898 1.2574779e+10 0.16490246 0.055538985 6.5368095 42.454581 6554.2053 1.1627349e+10 0.16312010 0.054836689 6.4616653 42.351753 6556.2208 1.0790872e+10 0.16137303 0.053980662 6.3865212 42.248925 6558.2363 1.0056209e+10 0.15967659 0.053037942 6.3190121 42.156544 6560.2518 9.4842226e+09 0.15717700 0.052047281 6.2522286 42.065155 6562.2673 9.0026159e+09 0.15423817 0.050625569 6.1848756 41.973257 6564.2828 8.5082598e+09 0.15118859 0.048643442 6.1097427 41.874398 6566.2983 8.0021951e+09 0.14896532 0.047014154 6.0346098 41.775539 6568.3138 7.4928097e+09 0.14753846 0.045483242 5.9594770 41.674547 6570.3293 7.0252302e+09 0.14642306 0.044781122 5.8843443 41.571735 6572.3447 6.5915874e+09 0.14502242 0.044032732 5.8092116 41.468922 6574.3602 6.1858540e+09 0.14310640 0.042681987 5.7340787 41.366108 6576.3757 5.7942549e+09 0.14132366 0.040938930 5.6589458 41.263294 6578.3912 5.4523156e+09 0.13922033 0.038031845 5.5895272 41.165983 6580.4067 5.1796813e+09 0.13712795 0.036144901 5.5262587 41.074596 6582.4222 4.9468879e+09 0.13515235 0.035178904 5.4629902 40.983209 6584.4377 4.7318842e+09 0.13300146 0.034277088 5.3921685 40.884547 6586.4532 4.4938899e+09 0.13093965 0.033165438 5.3170356 40.781732 6588.4687 4.2514090e+09 0.12918205 0.033223419 5.2423278 40.678917 6590.4842 3.9997457e+09 0.12687669 0.030161462 5.1711388 40.576089 6592.4996 3.7554595e+09 0.12450695 0.027588217 5.0999499 40.473261 6594.5151 3.5429414e+09 0.12190109 0.025889738 5.0353854 40.377060 6596.5306 3.3669086e+09 0.11882329 0.025724861 4.9756317 40.285671 6598.5461 3.2319412e+09 0.11630480 0.025146429 4.9158780 40.194282 6600.5616 3.0951781e+09 0.11521049 0.026144438 4.8477352 40.097408 6602.5771 2.9471583e+09 0.11362895 0.027024160 4.7765566 39.998549 6604.5926 2.7888504e+09 0.11172861 0.026423136 4.7053780 39.898878 6606.6081 2.6297563e+09 0.11021542 0.026411263 4.6341998 39.796065 6608.6236 2.4788629e+09 0.10720961 0.023715884 4.5630215 39.693253 6610.6391 2.3406498e+09 0.10435763 0.024613587 4.4995726 39.598170 6612.6546 2.2292254e+09 0.10308311 0.023831696 4.4398188 39.506783 6614.6700 2.1382889e+09 0.10210474 0.023478859 4.3800650 39.415395 6616.6855 2.0505235e+09 0.10077041 0.023389893 4.3140993 39.314506 6618.7010 1.9582712e+09 0.10019950 0.024300152 4.2468753 39.211692 6620.7165 1.8621128e+09 0.099560055 0.024998093 4.1796482 39.108874 6622.7320 1.7648531e+09 0.098320612 0.024563157 4.1124141 39.006045 6624.7475 1.6724843e+09 0.096908392 0.025262440 4.0451801 38.903217 6626.7630 1.5814172e+09 0.095163884 0.025618789 3.9779537 38.803462 6628.7785 1.4923803e+09 0.094058976 0.026019164 3.9107296 38.704603 6630.7940 1.4140699e+09 0.092495607 0.025930258 3.8453385 38.607578 6632.8095 1.3515996e+09 0.091075619 0.026129406 3.7855849 38.516189 6634.8249 1.2990635e+09 0.089488066 0.026387018 3.7258313 38.424800 6636.8404 1.2466279e+09 0.087806799 0.026223376 3.6646700 38.328838 6638.8559 1.1945778e+09 0.086523988 0.025634352 3.6013999 38.226025 6640.8714 1.1346681e+09 0.086879755 0.025164032 3.5381299 38.123212 6642.8869 1.0804322e+09 0.086301360 0.025187990 3.4748602 38.020398 6644.9024 1.0283396e+09 0.085082288 0.025441136 3.4115905 37.917584 6646.9179 9.7445474e+08 0.083697981 0.026395278 3.3469660 37.816125 6648.9334 9.2453230e+08 0.082260551 0.027589093 3.2797421 37.717266 6650.9489 8.7790567e+08 0.081669669 0.026472461 3.2125182 37.618408 6652.9644 8.3883259e+08 0.081154786 0.027515856 3.1542277 37.525619 6654.9799 8.0980613e+08 0.079945310 0.027618799 3.0979815 37.434219 6656.9953 7.8182485e+08 0.078175577 0.028897025 3.0417353 37.342820 6659.0108 7.5067524e+08 0.076849540 0.031832338 2.9786824 37.240360 6661.0263 7.1663526e+08 0.075812002 0.032548358 2.9154128 37.137547 6663.0418 6.8200649e+08 0.074891633 0.032471624 2.8538841 37.034734 6665.0573 6.4794377e+08 0.074482517 0.028453232 2.7945685 36.931919 6667.0728 6.1789165e+08 0.074187765 0.027130197 2.7352528 36.829105 6669.0883 5.9083945e+08 0.073107067 0.028265025 2.6723333 36.729895 6671.1038 5.6228475e+08 0.073321601 0.026866827 2.6090637 36.631037 6673.1193 5.3956482e+08 0.072970571 0.027637592 2.5473069 36.530665 6675.1348 5.1427428e+08 0.071481618 0.030056470 2.4879917 36.427853 6677.1502 4.8971271e+08 0.069590529 0.032144622 2.4286765 36.325040 6679.1657 4.6608951e+08 0.069138753 0.030130811 2.3659853 36.222227 6681.1812 4.4160020e+08 0.070152329 0.029796396 2.3027156 36.119413 6683.1967 4.2122395e+08 0.070652577 0.031476879 2.2407305 36.017883 6685.2122 4.0056272e+08 0.070417285 0.032928986 2.1814148 35.919024 6687.2277 3.8258820e+08 0.068624151 0.034215908 2.1220992 35.820165 6689.2432 3.6527461e+08 0.066083675 0.033797111 2.0627839 35.718159 6691.2587 3.4890655e+08 0.065166888 0.032940230 2.0034687 35.615346 6693.2742 3.3500243e+08 0.064274076 0.031510030 1.9441534 35.512533 6695.2897 3.2053874e+08 0.063778256 0.029806266 1.8848381 35.409719 6697.3052 3.0606396e+08 0.063178186 0.030129883 1.8255228 35.306905 6699.3206 2.9160609e+08 0.061930314 0.031294568 1.7691209 35.207001 6701.3361 2.7728782e+08 0.060349331 0.031902654 1.7137517 35.108127 6703.3516 2.6461688e+08 0.060396940 0.034555118 1.6575546 35.008427 6705.3671 2.5269618e+08 0.060565801 0.037321267 1.5982393 34.905614 6707.3826 2.4254706e+08 0.060249176 0.040132018 1.5389241 34.802802 6709.3981 2.3525646e+08 0.059477919 0.040879333 1.4796086 34.702681 6711.4136 2.2514904e+08 0.057705963 0.041162784 1.4202929 34.603822 6713.4291 2.1353480e+08 0.055786877 0.045238514 1.3615789 34.504361 6715.4446 2.0437662e+08 0.054004455 0.047833282 1.3062180 34.401547 6717.4601 1.9513991e+08 0.052013416 0.049845812 1.2508571 34.298733 6719.4756 1.8855377e+08 0.050223571 0.050918030 1.1954962 34.195920 6721.4910 1.8225466e+08 0.050424483 0.050451852 1.1401353 34.093108 6723.5065 1.7145852e+08 0.048888100 0.049651446 1.0847743 33.990668 6725.5220 1.6259054e+08 0.044847244 0.041249937 1.0294134 33.891810 6727.5375 1.5450870e+08 0.043638289 0.040244264 0.97405247 33.792951 6729.5530 1.5023348e+08 0.042720693 0.040676836 0.91869155 33.691856 6731.5685 1.4638793e+08 0.040949716 0.042881435 0.86333064 33.589044 6733.5840 1.4335333e+08 0.039808920 0.047094935 0.80796972 33.486376 6735.5995 1.3521398e+08 0.040668318 0.049929820 0.75260848 33.387517 6737.6150 1.2785713e+08 0.041865456 0.056094557 0.69724724 33.288657 6739.6305 1.2002486e+08 0.041852889 0.063598111 0.64188616 33.187790 6741.6459 1.1473441e+08 0.040029073 0.067600972 0.58652522 33.084976 6743.6614 1.1484911e+08 0.035886196 0.075509484 0.53116429 32.982162 6745.6769 1.1080319e+08 0.034175277 0.078851462 0.46805968 32.869392 6747.6924 1.0716733e+08 0.029912581 0.067122788 0.40478872 32.756408 6749.7079 1.0107920e+08 0.028021462 0.072084107 0.35060312 32.651206 6751.7234 96405587. 0.025176522 0.074017529 0.29918886 32.548378 6753.7389 91880153. 0.023638242 0.075368476 0.24683615 32.446494 6755.7544 89931029. 0.021455475 0.074274597 0.19147524 32.347636 6757.7699 87931216. 0.020335976 0.074403699 0.13611433 32.248777 6759.7854 87890145. 0.021041120 0.076009476 0.083556526 32.149917 6761.8009 84491227. 0.023756021 0.078034391 0.032149656 32.051057 6763.8163 76713206. 0.026486271 0.078923957 -0.020579841 31.948840 6765.8318 68796217. 0.027230819 0.079683048 -0.079331455 31.831336 6767.8473 62739685. 0.023375527 0.081026982 -0.13808307 31.713833 6769.8628 60893693. 0.017039856 0.086546968 -0.18972929 31.614366 6771.8783 59360156. 0.0088794064 0.091435419 -0.24113586 31.515507 6773.8938 59004744. -0.020757419 0.096323869 -0.29576332 31.408473 6775.9093 57633646. -0.0027418863 0.10121232 -0.35451493 31.290970 6777.9248 55448845. 0.041850619 0.10610077 -0.41160804 31.177678