# # 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 = 58.855685 km # Date (UTC) = 2014-01-26T09:57:14.654 # Date (julian) = 2456683.91475294 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.5263 6.0143690e+10 0.037788661 0.031537259 100.82291 50.202112 6500.0554 5.5024803e+10 0.046260084 0.032299926 100.97506 50.016885 6502.5846 4.9751868e+10 0.054849974 0.033062592 101.14161 49.807954 6505.1138 4.4916834e+10 0.063676319 0.033825259 101.31931 49.585626 6507.6430 4.0277451e+10 0.072776014 0.034587925 101.49748 49.368545 6510.1721 3.6348835e+10 0.082386318 0.035350592 101.64304 49.189897 6512.7013 3.3432384e+10 0.092852379 0.036113258 101.78457 49.007244 6515.2305 3.0782512e+10 0.10404060 0.036875925 101.92696 48.818416 6517.7597 2.8243186e+10 0.11595182 0.037638591 102.10164 48.596090 6520.2888 2.5907922e+10 0.12869381 0.038401258 102.24639 48.404808 6522.8180 2.3569526e+10 0.13984543 0.039131461 102.39441 48.207448 6525.3472 2.1560692e+10 0.14693072 0.039742589 102.55886 47.987603 6527.8764 1.9674904e+10 0.15309831 0.041352734 102.69119 47.802339 6530.4056 1.8105575e+10 0.15887582 0.044396469 102.82350 47.617095 6532.9347 1.6687878e+10 0.16432174 0.047465064 102.95697 47.430236 6535.4639 1.5272165e+10 0.16732611 0.048023054 103.11578 47.207910 6537.9931 1.3866117e+10 0.17038402 0.049153422 103.25381 47.014660 6540.5223 1.2582991e+10 0.17205103 0.051100833 103.38615 46.829396 6543.0514 1.1595116e+10 0.17160628 0.051395394 103.51848 46.644129 6545.5806 1.0729418e+10 0.17009032 0.052460769 103.64577 46.458864 6548.1098 1.0017101e+10 0.16825699 0.053700434 103.77148 46.273610 6550.6390 9.3154193e+09 0.16601499 0.055145352 103.89717 46.088383 6553.1681 8.6069828e+09 0.16412446 0.055250541 104.04146 45.875745 6555.6973 7.9218805e+09 0.16164366 0.054267445 104.18027 45.671185 6558.2265 7.2992126e+09 0.15949588 0.053046297 104.30598 45.485921 6560.7557 6.8062890e+09 0.15652790 0.051592968 104.42529 45.300658 6563.2849 6.3739919e+09 0.15393169 0.049598855 104.54439 45.115392 6565.8140 5.9704236e+09 0.15141547 0.047394053 104.66349 44.930125 6568.3432 5.5918642e+09 0.14981636 0.045456171 104.78256 44.738644 6570.8724 5.2526604e+09 0.14821832 0.044556137 104.90165 44.549655 6573.4016 4.9540809e+09 0.14633346 0.043335237 105.02075 44.364388 6575.9307 4.6761288e+09 0.14393054 0.041440884 105.13374 44.179124 6578.4599 4.4127560e+09 0.14128332 0.037923353 105.24623 43.993860 6580.9891 4.1595770e+09 0.13841729 0.035606689 105.35871 43.808596 6583.5183 3.9111257e+09 0.13616935 0.034759341 105.47119 43.623330 6586.0474 3.6893342e+09 0.13345064 0.033170683 105.58367 43.438065 6588.5766 3.4775427e+09 0.13120272 0.033187365 105.69616 43.252800 6591.1058 3.2886964e+09 0.12782154 0.029082527 105.80862 43.067569 6593.6350 3.1112464e+09 0.12456738 0.026511885 105.91867 42.882328 6596.1642 2.9258632e+09 0.12055195 0.025726528 106.02454 42.697062 6598.6933 2.7500515e+09 0.11760042 0.025076145 106.13605 42.511797 6601.2225 2.5913642e+09 0.11689795 0.027150478 106.24108 42.335601 6603.7517 2.4660759e+09 0.11538352 0.026218279 106.33183 42.176808 6606.2809 2.3576332e+09 0.11502310 0.026999265 106.43133 42.002682 6608.8100 2.2552748e+09 0.11217874 0.023710954 106.53719 41.817418 6611.3392 2.1441331e+09 0.10926055 0.024742137 106.64306 41.632151 6613.8684 2.0283201e+09 0.10838215 0.023892205 106.74524 41.446886 6616.3976 1.9169100e+09 0.10704550 0.023344697 106.84478 41.261624 6618.9267 1.8041927e+09 0.10654563 0.024470598 106.95063 41.076397 6621.4559 1.6902933e+09 0.10589003 0.024938329 107.05296 40.891149 6623.9851 1.5943633e+09 0.10402024 0.024856789 107.15189 40.706470 6626.5143 1.5165534e+09 0.10247298 0.025935668 107.23696 40.547677 6629.0435 1.4484798e+09 0.10084351 0.026101249 107.32570 40.382031 6631.5726 1.3908732e+09 0.098800598 0.025988933 107.42494 40.196767 6634.1018 1.3265558e+09 0.096985278 0.026334269 107.52419 40.011501 6636.6310 1.2542990e+09 0.095265912 0.026304716 107.62188 39.826236 6639.1602 1.1902363e+09 0.093978907 0.025570830 107.71451 39.640972 6641.6893 1.1307272e+09 0.094324209 0.025150641 107.80166 39.474896 6644.2185 1.0806035e+09 0.092925934 0.025367223 107.88673 39.316102 6646.7477 1.0399313e+09 0.091295965 0.026307176 107.97907 39.131852 6649.2769 9.9270709e+08 0.089633022 0.027252040 108.07170 38.946604 6651.8060 9.4220019e+08 0.088758951 0.027101882 108.16431 38.761377 6654.3352 8.8979438e+08 0.087579841 0.027893418 108.25694 38.576116 6656.8644 8.4781644e+08 0.085254206 0.028782094 108.34392 38.402160 6659.3936 8.0955597e+08 0.083534765 0.031752498 108.42331 38.243365 6661.9228 7.7922261e+08 0.082038349 0.033004927 108.51150 38.066996 6664.4519 7.4725543e+08 0.080968887 0.030552502 108.60312 37.881731 6666.9811 7.0744157e+08 0.080941668 0.027099776 108.68914 37.696467 6669.5103 6.7560099e+08 0.079978279 0.027831608 108.77091 37.528176 6672.0395 6.4535193e+08 0.079932685 0.026902470 108.85031 37.369381 6674.5686 6.2136242e+08 0.078719951 0.029434472 108.93552 37.187348 6677.0978 5.9690637e+08 0.076262521 0.032219168 109.02153 37.002085 6679.6270 5.6983710e+08 0.076099499 0.029749656 109.10755 36.816821 6682.1562 5.4067626e+08 0.077090797 0.030543859 109.19355 36.631587 6684.6853 5.1354738e+08 0.077207298 0.032688870 109.27533 36.455440 6687.2145 4.9268551e+08 0.075289873 0.034223260 109.34905 36.296646 6689.7437 4.7480250e+08 0.072539008 0.033346578 109.42991 36.122492 6692.2729 4.5916323e+08 0.071249163 0.032448458 109.51593 35.937228 6694.8020 4.3859437e+08 0.070403008 0.030136911 109.60195 35.751962 6697.3312 4.1572411e+08 0.069721662 0.030133183 109.67795 35.584620 6699.8604 3.9548073e+08 0.067982797 0.030796526 109.74600 35.431500 6702.3896 3.7865865e+08 0.066262622 0.033187812 109.82832 35.252846 6704.9188 3.6025687e+08 0.066515395 0.036628712 109.91246 35.067581 6707.4479 3.4163391e+08 0.066014425 0.040122660 109.99187 34.882317 6709.9771 3.2665010e+08 0.064789885 0.040511053 110.06251 34.717477 6712.5063 3.1221328e+08 0.062312757 0.042769966 110.13066 34.558464 6715.0355 3.0132872e+08 0.060030294 0.047414860 110.21004 34.373234 6717.5646 2.8695659e+08 0.057761496 0.049839343 110.28943 34.191274 6720.0938 2.7191045e+08 0.056457774 0.050408896 110.36884 34.012626 6722.6230 2.5993473e+08 0.056159124 0.049835020 110.44823 33.827459 6725.1522 2.4547534e+08 0.051797540 0.041480966 110.52225 33.654741 6727.6813 2.3795920e+08 0.050461231 0.040052635 110.59031 33.495948 6730.2105 2.2586263e+08 0.049190119 0.040667558 110.66643 33.323045 6732.7397 2.1520711e+08 0.047653250 0.043876386 110.74451 33.143078 6735.2689 2.0650694e+08 0.047937666 0.049578867 110.81729 32.957813 6737.7981 1.9573586e+08 0.049758769 0.056677792 110.88682 32.790758 6740.3272 1.8949330e+08 0.049454385 0.064609382 110.95487 32.631963 6742.8564 1.8223093e+08 0.045926758 0.070697554 111.02730 32.454811 6745.3856 1.7247796e+08 0.042412929 0.078728984 111.10008 32.273444 6747.9148 1.6436884e+08 0.038163034 0.067046243 111.17284 32.088217 6750.4439 1.5718277e+08 0.035426941 0.072762177 111.25159 31.902957 6752.9731 1.5060779e+08 0.032565518 0.073008399 111.32841 31.720275 6755.5023 1.4464070e+08 0.030204759 0.074385122 111.40119 31.541627 6758.0315 1.3709643e+08 0.028967792 0.073771871 111.46483 31.380429 6760.5606 1.3098936e+08 0.029568520 0.077130399 111.52765 31.218572 6763.0898 1.2705992e+08 0.034826598 0.076711325 111.59382 31.033307 6765.6190 1.2605389e+08 0.037333003 0.079644194 111.66399 30.852042 6768.1482 1.1966691e+08 0.034449726 0.081389203 111.73677 30.672780 6770.6774 1.1336057e+08 0.029337319 0.088522583 111.80955 30.487515 6773.2065 1.0814586e+08 0.024854633 0.094656948 111.88232 30.306119 6775.7357 1.0242792e+08 0.020402909 0.10079131 111.95396 30.128893 6778.2649 1.0264506e+08 0.015893115 0.10692568 112.01068 29.970099 6780.7941 98387806. 0.011432014 0.11306005 112.07232 29.805216 6783.3232 95621459. 0.0069595109 0.11919441 112.14511 29.626568 6785.8524 93183967. 0.0024892233 0.12532878 112.21263 29.442658 6788.3816 88162369. -0.0019534721 0.13146314 112.27879 29.259272 6790.9108 85553170. -0.0064117938 0.13759751 112.34495 29.080625 6793.4399 80841342. -0.010845681 0.14373187 112.41623 28.901977 6795.9691 78443641. -0.015296855 0.14986624 112.48729 28.721600 6798.4983 76472443. -0.019748975 0.15600061 112.55345 28.536335 6801.0275 74593756. -0.024199604 0.16213497 112.61961 28.356059 6803.5567 73243748. -0.028653236 0.16826934 112.68576 28.175862 6806.0858 66756728. -0.033053579 0.17440370 112.75193 27.990597 6808.6150 61040380. -0.037450755 0.18053807 112.81810 27.810141 6811.1442 57595496. -0.041866050 0.18667243 112.88426 27.631493 6813.6734 55310851. -0.046290430 0.19280680 112.95043 27.452845 6816.2025 55838985. -0.050744380 0.19894117 113.01193 27.269538 6818.7317 54454146. -0.055190406 0.20507553 113.07276 27.085550 6821.2609 53608127. -0.059651975 0.21120990 113.13893 26.906902 6823.7901 53673400. -0.064123199 0.21734426 113.20509 26.728278 6826.3192 54293607. -0.068604561 0.22347863 113.27012 26.549660 6828.8484 50484726. -0.073020974 0.22961299 113.32966 26.371010 6831.3776 48046755. -0.077599243 0.23574736 113.39357 26.188005 6833.9068 44013161. -0.082955045 0.24188173 113.45876 26.003715 6836.4360 40990097. -0.091000172 0.24801609 113.51831 25.825067 6841.4943 41611520. -0.095039536 0.26028482 113.66241 25.422775 6844.0235 41963012. -0.094243419 0.26641919 113.72195 25.244162