# # 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 = 45.937197 km # Date (UTC) = 2013-01-07T09:25:02.119 # Date (julian) = 2456299.89238564 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6489.1989 1.7966291e+11 0.026491537 0.029026154 -22.850185 48.269816 6491.6207 1.4773142e+11 0.035203634 0.029756460 -22.968976 48.151025 6494.0426 1.2224330e+11 0.043603834 0.030486766 -23.083871 48.028307 6496.4644 1.0312355e+11 0.051499748 0.031217072 -23.197927 47.904745 6498.8863 8.8381109e+10 0.058858292 0.031947378 -23.311971 47.781197 6501.3082 7.6638132e+10 0.065655409 0.032677684 -23.426011 47.657655 6503.7300 6.7237154e+10 0.071826146 0.033407990 -23.540050 47.537031 6506.1519 5.9439432e+10 0.077442377 0.034138296 -23.654090 47.418239 6508.5738 5.2674746e+10 0.082682162 0.034868602 -23.765708 47.297025 6510.9956 4.6825945e+10 0.087953667 0.035598908 -23.874996 47.173482 6513.4175 4.1890788e+10 0.093860234 0.036329213 -23.979363 47.057213 6515.8393 3.7951528e+10 0.10115533 0.037059519 -24.076507 46.951622 6518.2612 3.4678014e+10 0.11043087 0.037789825 -24.174106 46.845357 6520.6831 3.1754303e+10 0.12202084 0.038520131 -24.283393 46.721815 6523.1049 2.8963920e+10 0.13294204 0.039205117 -24.392681 46.598273 6525.5268 2.6325706e+10 0.14205357 0.039722094 -24.497536 46.474731 6527.9486 2.3998273e+10 0.15247709 0.041405199 -24.602073 46.351189 6530.3705 2.1899559e+10 0.16290413 0.044347399 -24.710546 46.231583 6532.7924 2.0010500e+10 0.17163648 0.047346132 -24.819834 46.112792 6535.2142 1.8285340e+10 0.17589879 0.048131365 -24.925692 45.990547 6537.6361 1.6715515e+10 0.17677331 0.048985114 -25.030244 45.866984 6540.0580 1.5283973e+10 0.17595468 0.050881480 -25.131842 45.743435 6542.4798 1.3984821e+10 0.17302909 0.051184402 -25.231627 45.619892 6544.9017 1.2813605e+10 0.17122923 0.052375805 -25.333860 45.498798 6547.3235 1.1763639e+10 0.16905821 0.053410400 -25.438395 45.380007 6549.7454 1.0810043e+10 0.16733030 0.054725901 -25.540980 45.259264 6552.1673 9.9396797e+09 0.16575627 0.055544667 -25.640764 45.135720 6554.5891 9.1636338e+09 0.16372076 0.054844743 -25.740549 45.012176 6557.0110 8.4451205e+09 0.16179099 0.053859222 -25.840334 44.888634 6559.4328 7.7923586e+09 0.15918246 0.052338325 -25.940119 44.766050 6561.8547 7.2079070e+09 0.15656807 0.050951500 -26.039903 44.647259 6564.2766 6.6651541e+09 0.15367955 0.048646257 -26.139226 44.528006 6566.6984 6.1556093e+09 0.15160660 0.046787785 -26.234259 44.404462 6569.1203 5.6960279e+09 0.14945718 0.044860254 -26.329292 44.280918 6571.5422 5.3099497e+09 0.14765370 0.044355203 -26.418048 44.170989 6573.9640 4.9948814e+09 0.14462660 0.042883883 -26.506756 44.061161 6576.3859 4.7274831e+09 0.14149756 0.040927242 -26.599418 43.942757 6578.8077 4.4514716e+09 0.13756171 0.037374102 -26.694451 43.819213 6581.2296 4.1670880e+09 0.13382256 0.035527083 -26.789484 43.698144 6583.6515 3.8975991e+09 0.13011124 0.034691926 -26.884517 43.579353 6586.0733 3.6402100e+09 0.12639504 0.033170348 -26.977572 43.458584 6588.4952 3.4124479e+09 0.12366376 0.033214562 -27.067853 43.335042 6590.9170 3.1994447e+09 0.12062147 0.029356218 -27.159615 43.211500 6593.3389 3.0030627e+09 0.11841040 0.026787140 -27.254648 43.087958 6595.7608 2.8232519e+09 0.11557392 0.025702465 -27.348697 42.964416 6598.1826 2.6526850e+09 0.11347529 0.025319971 -27.438979 42.840872 6600.6045 2.4940031e+09 0.11292440 0.026232599 -27.529261 42.717815 6603.0264 2.3457718e+09 0.11194888 0.026647672 -27.619541 42.599024 6605.4482 2.2050178e+09 0.11110889 0.027041060 -27.709822 42.480224 6607.8701 2.0761984e+09 0.10899045 0.023988921 -27.800103 42.356700 6610.2919 1.9541587e+09 0.10555427 0.024281919 -27.890385 42.233158 6612.7138 1.8303382e+09 0.10354881 0.023787428 -27.976421 42.109614 6615.1357 1.7172070e+09 0.10213794 0.023255706 -28.061951 41.986070 6617.5575 1.6140101e+09 0.10070930 0.023624094 -28.139990 41.876680 6619.9794 1.5327022e+09 0.099698244 0.024762224 -28.216025 41.771076 6622.4012 1.4609287e+09 0.097821890 0.024651194 -28.298067 41.657908 6624.8231 1.3896918e+09 0.095680319 0.025302915 -28.388349 41.534366 6627.2450 1.3106198e+09 0.093165879 0.025411438 -28.477123 41.410823 6629.6668 1.2286848e+09 0.091529734 0.025988540 -28.562652 41.287279 6632.0887 1.1547593e+09 0.089211248 0.026042980 -28.647171 41.163736 6634.5106 1.0888465e+09 0.087156164 0.026364085 -28.727949 41.040194 6636.9324 1.0324505e+09 0.084949383 0.026187658 -28.809240 40.917165 6639.3543 9.7795165e+08 0.083578314 0.025501448 -28.894771 40.798374 6641.7761 9.2433301e+08 0.083765865 0.025150936 -28.980301 40.679553 6644.1980 8.7060548e+08 0.082728299 0.025365006 -29.065831 40.556021 6646.6199 8.1722146e+08 0.081861447 0.026241008 -29.151360 40.432478 6649.0417 7.7020356e+08 0.080825334 0.027576174 -29.232618 40.308936 6651.4636 7.2714472e+08 0.080700838 0.026839436 -29.313396 40.185394 6653.8854 6.8690448e+08 0.080245732 0.027977739 -29.394184 40.065612 6656.3073 6.4934529e+08 0.078484104 0.028293140 -29.474974 39.946803 6658.7292 6.1029014e+08 0.076943536 0.031354276 -29.555755 39.824727 6661.1510 5.7644385e+08 0.075555525 0.032611873 -29.636533 39.701185 6663.5729 5.4397946e+08 0.074225904 0.032324450 -29.717312 39.577642 6665.9948 5.1456571e+08 0.074090786 0.026917190 -29.798090 39.454098 6668.4166 4.8586689e+08 0.073155760 0.027839450 -29.876582 39.332840 6670.8385 4.5804058e+08 0.072911115 0.026940179 -29.952608 39.214049 6673.2603 4.3241149e+08 0.072439670 0.027848574 -30.030424 39.093469 6675.6822 4.0690516e+08 0.070303852 0.031105022 -30.111202 38.969927 6678.1041 3.8163869e+08 0.068968505 0.030867012 -30.190687 38.846385 6680.5259 3.5641967e+08 0.069412254 0.029554985 -30.266713 38.722841 6682.9478 3.3845276e+08 0.070101976 0.031148687 -30.342739 38.600093 6685.3696 3.2364292e+08 0.069704802 0.033095276 -30.418766 38.481302 6687.7915 3.1057387e+08 0.067278953 0.033901468 -30.494793 38.362210 6690.2134 2.9558000e+08 0.065002989 0.033091411 -30.570819 38.238668 6692.6352 2.7978845e+08 0.063874126 0.032027672 -30.646845 38.115127 6695.0571 2.6746569e+08 0.063185396 0.029848987 -30.722871 37.991583 6697.4790 2.5467032e+08 0.062570719 0.030151878 -30.798898 37.868039 6699.9008 2.4209899e+08 0.061119737 0.030759236 -30.870875 37.748539 6702.3227 2.2981736e+08 0.059732317 0.033134390 -30.942160 37.629730 6704.7445 2.2063228e+08 0.060231357 0.036543162 -31.017001 37.507373 6707.1664 2.1337839e+08 0.059987850 0.040162989 -31.093028 37.383831 6709.5883 2.0462623e+08 0.059203129 0.040758379 -31.172560 37.252402 6712.0101 1.9338489e+08 0.057043110 0.041848756 -31.254018 37.116637 6714.4320 1.8011011e+08 0.054890489 0.047335885 -31.327291 36.990697 6716.8538 1.6924456e+08 0.052829650 0.049658999 -31.398565 36.867155 6719.2757 1.6072556e+08 0.050551231 0.051107895 -31.469840 36.743612 6721.6976 1.5288806e+08 0.050871223 0.050514080 -31.541114 36.620068 6724.1194 1.4635924e+08 0.048510506 0.048929325 -31.612389 36.499351 6726.5413 1.3920844e+08 0.044683612 0.040956249 -31.683663 36.380560 6728.9632 1.3388169e+08 0.044076997 0.040993206 -31.754938 36.259440 6731.3850 1.3046845e+08 0.041970084 0.042516280 -31.826214 36.135898 6733.8069 1.2278828e+08 0.040578429 0.048305086 -31.901416 36.007642 6736.2287 1.1358895e+08 0.042168471 0.051219771 -31.982875 35.871877 6738.6506 1.0704277e+08 0.043197642 0.060902952 -32.056205 35.742764 6741.0725 1.0122517e+08 0.041968400 0.065965360 -32.122728 35.619220 6743.4943 98107705. 0.037394178 0.074382141 -32.191340 35.497766 6745.9162 92889637. 0.035114844 0.078952044 -32.262616 35.378975 6748.3380 84596052. 0.030824913 0.068795381 -32.335484 35.252675 6750.7599 79520517. 0.027905259 0.073301707 -32.411511 35.111481 6753.1818 79411519. 0.025042384 0.073565534 -32.482846 34.981348 6755.6036 77561642. 0.022677998 0.074340691 -32.549369 34.862556 6758.0255 73929582. 0.021444023 0.073759234 -32.615892 34.741915 6760.4474 70346653. 0.021816738 0.076914358 -32.682415 34.618371 6762.8692 64148185. 0.026194284 0.076648727 -32.751643 34.491349 6765.2911 62428667. 0.028109907 0.079584330 -32.827671 34.355585 6767.7129 61105300. 0.024203316 0.081177457 -32.899490 34.227336 6770.1348 56935246. 0.0042753940 0.087206655 -32.966023 34.108527 6772.5567 55419631. 0.012636900 0.093080734 -33.035775 33.982129 6774.9785 51618909. 0.036199265 0.098954813 -33.111805 33.840935