# # 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 = 52.448199 km # Date (UTC) = 2015-11-28T09:55:44.943 # Date (julian) = 2457354.91371462 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.1980 9.1543723e+10 0.042936815 0.032041371 107.30628 26.777325 6501.7534 8.0014916e+10 0.052623707 0.032811930 107.36348 26.641889 6504.3087 7.0953127e+10 0.062589342 0.033582490 107.42364 26.501510 6506.8641 6.2352547e+10 0.072769008 0.034353049 107.48380 26.361130 6509.4194 5.5069630e+10 0.083327760 0.035123608 107.54396 26.220751 6511.9748 4.9068650e+10 0.094424194 0.035894167 107.60413 26.080359 6514.5301 4.3724326e+10 0.10604122 0.036664726 107.66431 25.939959 6517.0855 3.8931454e+10 0.11819994 0.037435286 107.72160 25.796698 6519.6408 3.4621164e+10 0.13090365 0.038205845 107.77675 25.651305 6522.1962 3.0904870e+10 0.14368771 0.038968619 107.83093 25.517834 6524.7515 2.7925033e+10 0.15113385 0.039693940 107.88440 25.393054 6527.3069 2.5429440e+10 0.15726952 0.040939259 107.94012 25.263058 6529.8622 2.3239810e+10 0.16289638 0.043609220 108.00028 25.122679 6532.4176 2.1163483e+10 0.16752683 0.047033025 108.05874 24.982299 6534.9729 1.9121007e+10 0.17074576 0.048216721 108.11389 24.841920 6537.5283 1.7246993e+10 0.17249567 0.048934281 108.16904 24.701540 6540.0836 1.5504655e+10 0.17431615 0.050893606 108.22419 24.561160 6542.6390 1.4014746e+10 0.17330212 0.051244827 108.27875 24.426244 6545.1943 1.2833110e+10 0.17201565 0.052457308 108.33224 24.301449 6547.7497 1.1876936e+10 0.16954620 0.053572451 108.38590 24.174986 6550.3050 1.1052001e+10 0.16701078 0.055061734 108.44105 24.034607 6552.8604 1.0222147e+10 0.16450326 0.055370211 108.49619 23.894227 6555.4157 9.4071088e+09 0.16178027 0.054504057 108.55134 23.753847 6557.9711 8.6454717e+09 0.15913929 0.053257435 108.60649 23.613467 6560.5264 7.9171552e+09 0.15592201 0.051799669 108.66164 23.473088 6563.0818 7.2641913e+09 0.15294255 0.049833771 108.71604 23.334631 6565.6371 6.7241411e+09 0.15006632 0.047594932 108.76506 23.209851 6568.1925 6.2686900e+09 0.14797644 0.045594730 108.81408 23.085071 6570.7478 5.8545222e+09 0.14596119 0.044607733 108.86849 22.946576 6573.3032 5.4517658e+09 0.14370608 0.043414188 108.92364 22.806197 6575.8585 5.0568100e+09 0.14099676 0.041513333 108.97879 22.665817 6578.4139 4.6957307e+09 0.13807282 0.037996050 109.03394 22.525437 6580.9692 4.3504163e+09 0.13499138 0.035625044 109.08909 22.385058 6583.5246 4.0290800e+09 0.13253184 0.034756147 109.14423 22.244678 6586.0799 3.7529435e+09 0.12959838 0.033170263 109.18991 22.122243 6588.6353 3.5285587e+09 0.12697075 0.033167776 109.23448 22.001903 6591.1906 3.3366177e+09 0.12325003 0.028986803 109.28595 21.868503 6593.7460 3.1428617e+09 0.11969406 0.026408682 109.34109 21.728124 6596.3013 2.9464855e+09 0.11555037 0.025725904 109.39295 21.587745 6598.8567 2.7582952e+09 0.11213125 0.024998154 109.44308 21.447364 6601.4120 2.5794048e+09 0.11093678 0.027239735 109.49654 21.306985 6603.9674 2.4071185e+09 0.10874756 0.026090584 109.55169 21.166607 6606.5227 2.2551030e+09 0.10799447 0.026564621 109.59977 21.039625 6609.0781 2.1272010e+09 0.10494386 0.023729127 109.64433 20.919301 6611.6334 2.0154551e+09 0.10222344 0.024554509 109.69338 20.790473 6614.1888 1.9076002e+09 0.10132498 0.023810424 109.74853 20.650093 6616.7441 1.7940283e+09 0.10004488 0.023399092 109.80153 20.511858 6619.2995 1.6823997e+09 0.099598692 0.024598176 109.85167 20.376472 6621.8548 1.5793738e+09 0.098733934 0.024806106 109.90182 20.238913 6624.4102 1.4814825e+09 0.097013686 0.025081883 109.95195 20.098534 6626.9655 1.3951920e+09 0.095105144 0.025360712 109.99964 19.966991 6629.5209 1.3176617e+09 0.093939828 0.026014926 110.04420 19.846667 6632.0762 1.2551072e+09 0.091975992 0.026041488 110.08986 19.722401 6634.6316 1.1965492e+09 0.090295739 0.026372914 110.13999 19.582021 6637.1869 1.1329871e+09 0.088583982 0.026069852 110.19013 19.442654 6639.7423 1.0703459e+09 0.087962998 0.025362761 110.24026 19.307289 6642.2976 1.0040553e+09 0.088051000 0.025163876 110.29040 19.170883 6644.8530 9.4542813e+08 0.086823646 0.025435797 110.34053 19.030503 6647.4083 8.9386810e+08 0.085306447 0.026652777 110.39067 18.891191 6649.9637 8.4286114e+08 0.084182045 0.026305277 110.44081 18.755825 6652.5190 7.9462541e+08 0.083367883 0.027393332 110.48973 18.622766 6655.0744 7.5417332e+08 0.081819262 0.027640958 110.53430 18.497970 6657.6298 7.1603518e+08 0.079491131 0.029631602 110.57887 18.373174 6660.1851 6.8328338e+08 0.077679513 0.031794245 110.62886 18.238077 6662.7405 6.5134391e+08 0.076124553 0.032628834 110.67900 18.102711 6665.2958 6.1561736e+08 0.075635079 0.028062448 110.72913 17.967345 6667.8512 5.8607859e+08 0.075211462 0.027416101 110.77926 17.831978 6670.4065 5.5436587e+08 0.074828242 0.027140306 110.82446 17.696612 6672.9619 5.2368374e+08 0.074700921 0.027437107 110.86959 17.561242 6675.5172 4.9791295e+08 0.072791394 0.030788994 110.91968 17.420913 6678.0726 4.7018093e+08 0.071439751 0.030888085 110.96981 17.280540 6680.6279 4.4441767e+08 0.072053271 0.029577008 111.01995 17.145150 6683.1833 4.2189520e+08 0.072893730 0.031457146 111.07007 17.009784 6685.7386 3.9883854e+08 0.072574485 0.033484989 111.11520 16.874417 6688.2940 3.8049095e+08 0.069807600 0.033853046 111.16036 16.739050 6690.8493 3.6667900e+08 0.067990173 0.033018532 111.21049 16.603684 6693.4047 3.4753991e+08 0.066972946 0.031465266 111.26056 16.468318 6695.9600 3.3124926e+08 0.066555599 0.029683131 111.30569 16.332933 6698.5154 3.1182920e+08 0.065453824 0.030925209 111.35082 16.197548 6701.0707 2.8993486e+08 0.063430579 0.031513200 111.39594 16.062182 6703.6261 2.7537842e+08 0.063218495 0.035241842 111.44118 15.926816 6706.1814 2.6243133e+08 0.063161108 0.038762139 111.49132 15.791450 6708.7368 2.5076386e+08 0.062507122 0.040845888 111.54131 15.656084 6711.2921 2.3904266e+08 0.060438338 0.041024579 111.58643 15.520718 6713.8475 2.2486137e+08 0.057878450 0.046751722 111.63155 15.385351 6716.4028 2.1659277e+08 0.055701365 0.048994670 111.67667 15.249985 6718.9582 2.0837809e+08 0.052950635 0.051304685 111.72199 15.114619 6721.5135 1.9949557e+08 0.053406366 0.050458624 111.77213 14.979254 6724.0689 1.8713474e+08 0.051336457 0.049351573 111.82204 14.843888 6726.6242 1.7587404e+08 0.047458671 0.040956997 111.86716 14.708523 6729.1796 1.6799395e+08 0.046862763 0.040925740 111.91228 14.573157 6731.7349 1.6063800e+08 0.044778860 0.043212650 111.95741 14.437790 6734.2903 1.5492669e+08 0.043833780 0.049336135 112.00253 14.302705 6736.8456 1.4401151e+08 0.045887949 0.053551925 112.04765 14.172352 6739.4010 1.3775819e+08 0.046524761 0.063317264 112.09316 14.040505 6741.9563 1.3125969e+08 0.044321087 0.068486178 112.14473 13.885798 6744.5117 1.2691832e+08 0.039322882 0.078189178 112.19427 13.737199 6747.0670 1.2190512e+08 0.034335653 0.067338088 112.23939 13.601813 6749.6224 1.1682168e+08 0.032849177 0.072107526 112.28452 13.466434 6752.1777 1.1200149e+08 0.029043806 0.073928816 112.32964 13.331068 6754.7331 1.0704423e+08 0.027317678 0.075034594 112.37477 13.197342 6757.2884 1.0427378e+08 0.024550301 0.075864760 112.41989 13.066989 6759.8438 96678334. 0.025482170 0.076023572 112.46715 12.928535 6762.3991 93010768. 0.029652292 0.077407020 112.51872 12.773828 6764.9545 90103870. 0.032749818 0.079529012 112.56356 12.633428 6767.5098 87747506. 0.031561803 0.081404890 112.60367 12.503075 6770.0652 85355465. 0.026028443 0.087037789 112.64675 12.369751 6772.6205 81944874. 0.021304705 0.093235638 112.69187 12.234386 6775.1759 79201410. 0.016622239 0.099433487 112.74085 12.090877 6777.7312 75724773. 0.011939600 0.10563134 112.79242 11.941900 6780.2866 73354255. 0.0072944654 0.11182918 112.83849 11.804532 6782.8419 64562515. 0.0023511193 0.11802703 112.88361 11.669166 6785.3973 56112430. -0.0027326531 0.12422488 112.92935 11.522116 6787.9526 51942301. -0.0076869966 0.13042273 112.97511 11.374680 6790.5080 51316874. -0.012450642 0.13662058 113.02023 11.239314 6793.0633 56537513. -0.016802279 0.14281843 113.06611 11.102334 6795.6187 58131606. -0.021615121 0.14901628 113.11768 10.953357 6798.1740 57844189. -0.026874184 0.15521413 113.16498 10.809461 6800.7294 53123793. -0.033278315 0.16141198 113.20509 10.674096 6803.2847 50051831. -0.041782565 0.16760982 113.24953 10.533574 6805.8401 47511834. -0.068886868 0.17380767 113.30110 10.384596 6808.3954 44681198. -0.055822901 0.18000552 113.34904 10.235619 6810.9508 43718370. -0.017575304 0.18620337 113.39488 10.086641