# # 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 = 41.399800 km # Date (UTC) = 2011-01-17T07:55:29.275 # Date (julian) = 2455578.83019994 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.8300 1.0107661e+11 0.064850931 0.033438135 128.35398 48.926770 6506.2953 8.5517194e+10 0.075713581 0.034181538 128.48471 48.779460 6508.7606 7.2747357e+10 0.086811361 0.034924941 128.61185 48.635732 6511.2259 6.2524218e+10 0.098235736 0.035668344 128.74200 48.489005 6513.6912 5.3953394e+10 0.10996529 0.036411747 128.87467 48.339750 6516.1565 4.6813549e+10 0.12204272 0.037155150 128.99923 48.194551 6518.6218 4.1004545e+10 0.13456050 0.037898553 129.12085 48.050825 6521.0871 3.6477555e+10 0.14764128 0.038641956 129.23287 47.919240 6523.5524 3.2906756e+10 0.15680429 0.039316012 129.34412 47.788645 6526.0176 2.9873439e+10 0.16243956 0.039686588 129.46425 47.646791 6528.4829 2.6947968e+10 0.16855729 0.041825601 129.58614 47.502796 6530.9482 2.4154883e+10 0.17236566 0.045156210 129.71328 47.353543 6533.4135 2.1626714e+10 0.17642443 0.047695325 129.83777 47.205612 6535.8788 1.9378187e+10 0.17693440 0.047843067 129.95386 47.061884 6538.3441 1.7339673e+10 0.17863106 0.049324248 130.07233 46.915778 6540.8094 1.5513043e+10 0.17826156 0.051236490 130.19395 46.766523 6543.2747 1.3829007e+10 0.17647310 0.051453991 130.31213 46.617267 6545.7400 1.2355399e+10 0.17317484 0.052462197 130.42821 46.468012 6548.2053 1.1160484e+10 0.16976472 0.053728954 130.53251 46.337845 6550.6706 1.0172914e+10 0.16591437 0.055153269 130.63409 46.212087 6553.1359 9.3600704e+09 0.16272825 0.055266760 130.74647 46.068827 6555.6012 8.5740238e+09 0.15958970 0.054348231 130.86255 45.919572 6558.0665 7.8098046e+09 0.15672835 0.053182662 130.97347 45.775491 6560.5318 7.1021477e+09 0.15321784 0.051794853 131.08474 45.631064 6562.9971 6.4625160e+09 0.14995950 0.049931163 131.20082 45.481808 6565.4624 5.9230173e+09 0.14680367 0.047793386 131.31075 45.338485 6567.9277 5.4787842e+09 0.14428733 0.045832836 131.40749 45.207889 6570.3929 5.0999917e+09 0.14194422 0.044754738 131.50630 45.074005 6572.8582 4.7488980e+09 0.13934706 0.043738665 131.61133 44.930277 6575.3235 4.3991711e+09 0.13636145 0.042050103 131.71880 44.784110 6577.7888 4.0603255e+09 0.13310542 0.038981316 131.82936 44.634856 6580.2541 3.7308236e+09 0.12979492 0.036285908 131.93643 44.485602 6582.7194 3.4385616e+09 0.12677943 0.035098021 132.04146 44.336347 6585.1847 3.1950673e+09 0.12369428 0.033823102 132.13568 44.206440 6587.6500 2.9950010e+09 0.12058239 0.033302385 132.22758 44.080680 6590.1153 2.8141395e+09 0.11712607 0.030847595 132.32941 43.937157 6592.5806 2.6251848e+09 0.11324499 0.027509593 132.43444 43.787902 6595.0459 2.4195415e+09 0.10952362 0.025628330 132.53947 43.638647 6597.5112 2.2387489e+09 0.10560247 0.025561418 132.64203 43.492634 6599.9765 2.0915148e+09 0.10318027 0.024988460 132.72910 43.366857 6602.4418 1.9658312e+09 0.10119979 0.027139644 132.81745 43.239415 6604.9071 1.8531762e+09 0.099346735 0.026609861 132.92248 43.090160 6607.3724 1.7232980e+09 0.097576968 0.024971727 133.02606 42.940912 6609.8377 1.5924701e+09 0.094568797 0.023954754 133.12554 42.791682 6612.3029 1.4814980e+09 0.092445644 0.024094401 133.21722 42.653068 6614.7682 1.3877723e+09 0.091590349 0.023411204 133.29947 42.527291 6617.2335 1.3069489e+09 0.090398777 0.023516677 133.38836 42.392464 6619.6988 1.2273898e+09 0.089953676 0.024694530 133.48786 42.243209 6622.1641 1.1361278e+09 0.088968880 0.024714308 133.58737 42.093954 6624.6294 1.0548844e+09 0.087419588 0.025199234 133.68687 41.944698 6627.0947 9.7655986e+08 0.085575861 0.025353396 133.77312 41.813478 6629.5600 9.1328048e+08 0.084508243 0.026007854 133.85534 41.687721 6632.0253 8.5776227e+08 0.082710031 0.026035379 133.94579 41.545513 6634.4906 7.9919383e+08 0.081262623 0.026362629 134.03977 41.396258 6636.9559 7.4374054e+08 0.079746729 0.026178541 134.13374 41.247003 6639.4212 6.9071117e+08 0.079037288 0.025477534 134.22635 41.099677 6641.8865 6.4793869e+08 0.079472451 0.025151311 134.30375 40.973917 6644.3518 6.0785655e+08 0.078379146 0.025381625 134.38138 40.847813 6646.8171 5.7204039e+08 0.077139396 0.026343088 134.47536 40.698560 6649.2824 5.3610746e+08 0.075880055 0.027244466 134.56592 40.553144 6651.7477 5.0585849e+08 0.075343456 0.027057136 134.64331 40.422549 6654.2130 4.8017859e+08 0.074396533 0.027945507 134.72299 40.290139 6656.6782 4.5523537e+08 0.072286873 0.028618709 134.81697 40.146411 6659.1435 4.2513721e+08 0.070669157 0.031804656 134.90912 40.000863 6661.6088 3.9523942e+08 0.069479715 0.032845041 134.99756 39.851608 6664.0741 3.7046963e+08 0.068373117 0.031934859 135.07774 39.714577 6666.5394 3.4951560e+08 0.068736137 0.027013708 135.15030 39.588818 6669.0047 3.3089949e+08 0.067739589 0.028350859 135.23005 39.452421 6671.4700 3.1023164e+08 0.068160993 0.026872046 135.31850 39.303166 6673.9353 2.8967914e+08 0.067679765 0.028858034 135.40694 39.153911 6676.4006 2.7242906e+08 0.065445083 0.031971908 135.49538 39.004656 6678.8659 2.5903177e+08 0.064619801 0.030357468 135.57057 38.875017 6681.3312 2.4347222e+08 0.065878860 0.029911440 135.64312 38.749260 6683.7965 2.3026214e+08 0.066426064 0.032355834 135.72363 38.605471 6686.2618 2.1569772e+08 0.065752327 0.033913390 135.80654 38.456216 6688.7271 2.0213219e+08 0.062753614 0.033953023 135.88947 38.312257 6691.1924 1.8910883e+08 0.061527637 0.032955877 135.97084 38.170490 6693.6577 1.7546837e+08 0.060532070 0.031378471 136.04339 38.039895 6696.1230 1.6303648e+08 0.060270868 0.029726870 136.11679 37.908224 6698.5882 1.5184336e+08 0.059132966 0.031025255 136.19971 37.764498 6701.0535 1.4534094e+08 0.057053398 0.031488007 136.28263 37.619263 6703.5188 1.4000611e+08 0.056794196 0.034973528 136.36555 37.470008 6705.9841 1.3647984e+08 0.056758382 0.038418191 136.44142 37.331654 6708.4494 1.2902721e+08 0.056216510 0.040532986 136.50914 37.205897 6710.9147 1.2182448e+08 0.054435843 0.040675540 136.58288 37.070823 6713.3800 1.1182668e+08 0.052082557 0.045061051 136.66580 36.921567 6715.8453 1.0563249e+08 0.049992801 0.048243145 136.74547 36.775558 6718.3106 99733843. 0.047630774 0.050296153 136.82286 36.631830 6720.7759 95392453. 0.047291417 0.050329865 136.90025 36.483801 6723.2412 92488179. 0.046263533 0.049503460 136.97764 36.334548 6725.7065 87202612. 0.041963656 0.041134712 137.05503 36.190652 6728.1718 83479925. 0.041117866 0.039871567 137.13087 36.049032 6730.6371 76050818. 0.039447879 0.041252408 137.19858 35.918437 6733.1024 72441758. 0.038028259 0.044480091 137.26720 35.786619 6735.5677 66585793. 0.038536583 0.049896048 137.34459 35.642892 6738.0330 64292132. 0.039910184 0.057502531 137.42041 35.497595 6740.4983 61314157. 0.038820944 0.064901538 137.49228 35.348340 6742.9635 58163578. 0.033326882 0.070958611 137.56677 35.201711 6745.4288 55628258. 0.018581130 0.078747167 137.64416 35.057983 6747.8941 52589522. 0.023530450 0.067053345 137.71787 34.914256 6750.3594 51479591. 0.042679510 0.072617869 137.78974 34.770530