# # 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 = 47.063722 km # Date (UTC) = 2010-12-07T09:36:07.139 # Date (julian) = 2455537.90008263 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6517.2350 5.3713049e+10 0.13815867 0.037480377 107.68998 34.492031 6519.6523 4.6366120e+10 0.14985368 0.038209314 107.76112 34.363978 6522.0696 4.0030336e+10 0.16147470 0.038935487 107.83201 34.236378 6524.4870 3.5083005e+10 0.16698880 0.039599955 107.89525 34.122554 6526.9043 3.1199809e+10 0.17156907 0.040616121 107.95849 34.008731 6529.3216 2.7914987e+10 0.17433021 0.042748072 108.02694 33.882388 6531.7389 2.4832397e+10 0.17702775 0.046304194 108.09807 33.749590 6534.1562 2.2128728e+10 0.17778696 0.047988266 108.16486 33.627243 6536.5736 1.9920556e+10 0.17737673 0.048303688 108.22811 33.513404 6538.9909 1.8113480e+10 0.17700940 0.049639193 108.29277 33.397014 6541.4082 1.6487122e+10 0.17596588 0.051194149 108.36391 33.268961 6543.8255 1.4958232e+10 0.17418847 0.051598558 108.43419 33.141919 6546.2429 1.3633992e+10 0.17232496 0.052664357 108.49321 33.028095 6548.6602 1.2498591e+10 0.17059890 0.053864797 108.55223 32.914271 6551.0775 1.1477463e+10 0.16831347 0.055262954 108.61972 32.790501 6553.4948 1.0499690e+10 0.16581710 0.055086327 108.69086 32.662447 6555.9121 9.5414879e+09 0.16207731 0.054086947 108.75921 32.534393 6558.3295 8.6566940e+09 0.15807198 0.052958561 108.82560 32.406339 6560.7468 7.8997553e+09 0.15293032 0.051600986 108.88845 32.285143 6563.1641 7.2994691e+09 0.14838218 0.049738533 108.94746 32.171318 6565.5814 6.7969082e+09 0.14450613 0.047658178 109.00782 32.055929 6567.9988 6.3201674e+09 0.14210683 0.045772719 109.07897 31.927855 6570.4161 5.8418835e+09 0.14006892 0.044745158 109.15005 31.799846 6572.8334 5.3973543e+09 0.13788315 0.043752893 109.20490 31.685983 6575.2507 5.0163772e+09 0.13530154 0.042123162 109.25970 31.572160 6577.6680 4.6538316e+09 0.13245286 0.039171049 109.32180 31.449377 6580.0854 4.2863625e+09 0.12965876 0.036441870 109.38820 31.321322 6582.5027 3.9301317e+09 0.12712508 0.035157002 109.45075 31.200684 6584.9200 3.6191217e+09 0.12479935 0.034014352 109.50977 31.086860 6587.3373 3.3532507e+09 0.12238931 0.033233107 109.56989 30.970915 6589.7546 3.1020506e+09 0.11993169 0.031548831 109.63629 30.842860 6592.1720 2.8755270e+09 0.11687026 0.027906495 109.70222 30.715553 6594.5893 2.6810370e+09 0.11378547 0.025849033 109.75703 30.605931 6597.0066 2.5215532e+09 0.11032174 0.025720641 109.81185 30.496308 6599.4239 2.3768088e+09 0.10794212 0.024955227 109.87441 30.374359 6601.8413 2.2277827e+09 0.10695072 0.027441872 109.94081 30.246305 6604.2586 2.0685434e+09 0.10484288 0.026224809 110.00455 30.118252 6606.6759 1.9127291e+09 0.10344226 0.026289400 110.06620 29.990198 6609.0932 1.7766353e+09 0.099537006 0.023733621 110.12476 29.868573 6611.5105 1.6675861e+09 0.095766322 0.024632883 110.17957 29.754748 6613.9279 1.5746914e+09 0.093935889 0.023914024 110.23492 29.639790 6616.3452 1.4872140e+09 0.092009600 0.023336475 110.29657 29.511736 6618.7625 1.3991924e+09 0.091361842 0.024346577 110.35823 29.383681 6621.1798 1.3166816e+09 0.090861460 0.025029843 110.41323 29.273543 6623.5971 1.2488030e+09 0.089388401 0.024713059 110.46803 29.163936 6626.0145 1.1798487e+09 0.088384595 0.026572470 110.52695 29.043264 6628.4318 1.1101295e+09 0.086893223 0.025878406 110.58861 28.915191 6630.8491 1.0396410e+09 0.085464892 0.025930394 110.65027 28.787127 6633.2664 9.6613994e+08 0.084344369 0.026198770 110.71193 28.659073 6635.6838 9.0331351e+08 0.082973228 0.026502327 110.76935 28.536462 6638.1011 8.5186803e+08 0.081984240 0.025667239 110.81994 28.422638 6640.5184 8.0357378e+08 0.082222253 0.025207225 110.87066 28.308704 6642.9357 7.6225358e+08 0.082091736 0.025189988 110.93230 28.185403 6645.3530 7.1886657e+08 0.081055698 0.025617071 110.99395 28.062091 6647.7704 6.7251179e+08 0.080017800 0.026843380 111.05133 27.934503 6650.1877 6.3169997e+08 0.079283285 0.026298203 111.10825 27.806450 6652.6050 5.9181889e+08 0.078846003 0.027416983 111.16349 27.693032 6655.0223 5.5707744e+08 0.077717073 0.027619442 111.21829 27.583424 6657.4396 5.2990242e+08 0.075681314 0.029411091 111.27398 27.466043 6659.8570 5.0191899e+08 0.074122715 0.031655833 111.33090 27.337989 6662.2743 4.7675879e+08 0.072494873 0.032890377 111.38781 27.211413 6664.6916 4.4769040e+08 0.071517710 0.029675500 111.44473 27.088083 6667.1089 4.2190017e+08 0.071181673 0.027143472 111.50035 26.966698 6669.5263 3.9978763e+08 0.070227778 0.027815199 111.55094 26.852874 6671.9436 3.8009834e+08 0.070282518 0.026878795 111.60153 26.739050 6674.3609 3.6427904e+08 0.069466321 0.029259235 111.65739 26.617327 6676.7782 3.4431318e+08 0.067340878 0.032215284 111.71430 26.494016 6679.1955 3.2357221e+08 0.067014033 0.030106182 111.77121 26.367271 6681.6129 3.0448248e+08 0.068389260 0.030127539 111.82812 26.239218 6684.0302 2.8936449e+08 0.068910315 0.032655624 111.88504 26.114083 6686.4475 2.7769604e+08 0.068054149 0.034021452 111.94195 25.990771 6688.8648 2.6527696e+08 0.065085668 0.033984823 111.99886 25.865054 6691.2822 2.5034626e+08 0.064097146 0.032934693 112.05578 25.737000 6693.6995 2.3823268e+08 0.063124985 0.031364126 112.11017 25.616295 6696.1168 2.2662933e+08 0.062892978 0.029724312 112.16076 25.506672 6698.5341 2.1758630e+08 0.061760314 0.030950954 112.21140 25.396681 6700.9514 2.0954210e+08 0.059702288 0.031373427 112.26357 25.273369 6703.3688 1.9944137e+08 0.059363328 0.034597990 112.31574 25.150058 6705.7861 1.8971314e+08 0.059338052 0.038066101 112.37227 25.022392 6708.2034 1.8049097e+08 0.058816276 0.040265077 112.42919 24.894339 6710.6207 1.7184516e+08 0.057103150 0.040617994 112.48226 24.770126 6713.0380 1.6434533e+08 0.054705615 0.043824231 112.53443 24.646814 6715.4554 1.5356740e+08 0.052331650 0.047844326 112.58992 24.523502 6717.8727 1.4051392e+08 0.049860865 0.049820288 112.64683 24.400191 6720.2900 1.2814448e+08 0.048520882 0.050386163 112.70093 24.274067 6722.7073 1.2254401e+08 0.047794291 0.049730756 112.75310 24.146013 6725.1247 1.2027464e+08 0.043244337 0.041498154 112.80527 24.020257 6727.5420 1.1741870e+08 0.041740817 0.040238318 112.85745 23.896946 6729.9593 1.1429510e+08 0.040498036 0.040406031 112.90962 23.773634 6732.3766 1.0990510e+08 0.038673127 0.043809544 112.96179 23.650322 6734.7939 1.0405725e+08 0.038260825 0.049305830 113.01396 23.527011 6737.2113 98915310. 0.039941723 0.054808548 113.06613 23.403699 6739.6286 94282850. 0.040138606 0.063595819 113.11830 23.280385 6742.0459 89362855. 0.037681452 0.068722609 113.17048 23.157057 6744.4632 86934619. 0.032804456 0.078151707 113.22265 23.033729 6746.8805 79207765. 0.027923300 0.068749909 113.27483 22.910417 6749.2979 73185100. 0.026407512 0.072196376 113.32700 22.787106 6751.7152 73213689. 0.022533564 0.074014058 113.37917 22.663795 6754.1325 68924026. 0.020279320 0.076000372 113.43134 22.540484 6756.5498 68853274. 0.017196872 0.075581717 113.48351 22.413217 6758.9672 66146838. 0.017028270 0.075750504 113.53568 22.285162 6761.3845 61169074. 0.017461626 0.077999990 113.59326 22.147767 6763.8018 61512237. 0.021286941 0.078879665 113.65288 22.006837 6766.2191 56824074. 0.020063742 0.080209405 113.70176 21.881421 6768.6364 54570947. 0.010106411 0.083146100 113.74919 21.758110 6771.0538 53408559. -0.027098536 0.089435545 113.80028 21.638460 6773.4711 50621258. -0.0056825979 0.095298612 113.85245 21.519892 6775.8884 48830534. 0.052581903 0.10116168 113.90597 21.386485