# # 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 = 46.016945 km # Date (UTC) = 2012-01-06T08:44:03.948 # Date (julian) = 2455932.86393458 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.2623 3.3075526e+11 0.025183300 0.029346839 -14.965379 45.783642 6492.7009 2.7458606e+11 0.034171423 0.030082197 -15.070654 45.659227 6495.1396 2.2877809e+11 0.042926923 0.030817554 -15.175913 45.534830 6497.5782 1.9062964e+11 0.051362681 0.031552911 -15.281173 45.410434 6500.0168 1.5939201e+11 0.059342250 0.032288269 -15.386432 45.286035 6502.4554 1.3303408e+11 0.066794790 0.033023626 -15.491691 45.161637 6504.8940 1.1158387e+11 0.073712020 0.033758983 -15.596951 45.037240 6507.3326 9.3797456e+10 0.080208535 0.034494340 -15.702210 44.912843 6509.7712 7.9648099e+10 0.086632662 0.035229698 -15.803948 44.788445 6512.2098 6.8502993e+10 0.093452139 0.035965055 -15.904422 44.664047 6514.6485 5.9365871e+10 0.10107754 0.036700412 -16.004897 44.539650 6517.0871 5.1847588e+10 0.10999310 0.037435770 -16.105372 44.415253 6519.5257 4.5440558e+10 0.12045731 0.038171127 -16.205847 44.290856 6521.9643 3.9995398e+10 0.13275119 0.038906484 -16.306323 44.166457 6524.4029 3.5478497e+10 0.14050805 0.039570095 -16.401602 44.048491 6526.8415 3.1939289e+10 0.14925905 0.040550323 -16.490923 43.937904 6529.2801 2.9022315e+10 0.15769194 0.042682014 -16.580975 43.825733 6531.7187 2.6359929e+10 0.16665500 0.046274824 -16.676666 43.701336 6534.1574 2.3821571e+10 0.17236539 0.047988577 -16.772356 43.576939 6536.5960 2.1389194e+10 0.17459002 0.048323734 -16.868046 43.452541 6539.0346 1.9342611e+10 0.17462276 0.049685495 -16.963736 43.328143 6541.4732 1.7554110e+10 0.17259676 0.051173074 -17.059426 43.208216 6543.9118 1.5955014e+10 0.17003968 0.051621203 -17.155117 43.088603 6546.3504 1.4480661e+10 0.16790344 0.052752870 -17.250808 42.964951 6548.7890 1.3145821e+10 0.16604381 0.053903280 -17.346498 42.840554 6551.2277 1.2039189e+10 0.16446322 0.055315660 -17.434166 42.726585 6553.6663 1.1145007e+10 0.16279650 0.055000145 -17.519223 42.616010 6556.1049 1.0390157e+10 0.16061065 0.053997707 -17.606637 42.499865 6558.5435 9.6745701e+09 0.15864099 0.052776183 -17.697542 42.375469 6560.9821 8.9652628e+09 0.15580128 0.051388816 -17.788448 42.251072 6563.4207 8.2665837e+09 0.15350387 0.049441694 -17.879355 42.126673 6565.8593 7.6250267e+09 0.15110657 0.047342616 -17.970264 42.002271 6568.2979 7.0257740e+09 0.14952636 0.045497781 -18.061182 41.877856 6570.7366 6.4947708e+09 0.14782511 0.044612403 -18.152099 41.753443 6573.1752 6.0025979e+09 0.14581004 0.043516912 -18.243005 41.629045 6575.6138 5.5578400e+09 0.14318300 0.041758891 -18.333293 41.505241 6578.0524 5.1846325e+09 0.14015419 0.038566876 -18.409845 41.394668 6580.4910 4.8595043e+09 0.13669203 0.036066991 -18.486396 41.284095 6582.9296 4.5827096e+09 0.13348854 0.035040818 -18.569566 41.163961 6585.3682 4.3162072e+09 0.12987673 0.033676378 -18.655687 41.039565 6587.8068 4.0502039e+09 0.12671312 0.033337136 -18.744687 40.915167 6590.2455 3.7899027e+09 0.12353251 0.030605473 -18.835592 40.790768 6592.6841 3.5479093e+09 0.12061729 0.027409082 -18.924050 40.666371 6595.1227 3.3140908e+09 0.11814560 0.025636294 -19.010172 40.541974 6597.5613 3.0996377e+09 0.11570652 0.025545602 -19.094277 40.417577 6599.9999 2.9010358e+09 0.11486636 0.024989696 -19.175614 40.293178 6602.4385 2.7073612e+09 0.11429851 0.027142413 -19.258540 40.168774 6604.8771 2.5205908e+09 0.11344606 0.026592092 -19.344674 40.044359 6607.3158 2.3491965e+09 0.11209397 0.025083504 -19.427466 39.923288 6609.7544 2.2104713e+09 0.10881578 0.023930013 -19.499764 39.812713 6612.1930 2.0925728e+09 0.10615701 0.024176566 -19.572062 39.702138 6614.6316 1.9875540e+09 0.10482691 0.023505351 -19.652407 39.579259 6617.0702 1.8725726e+09 0.10318120 0.023462525 -19.733744 39.454863 6619.5088 1.7584829e+09 0.10229891 0.024648683 -19.815080 39.330465 6621.9474 1.6567803e+09 0.10083585 0.024775417 -19.896417 39.206067 6624.3860 1.5587171e+09 0.098586332 0.025068957 -19.977754 39.081670 6626.8247 1.4664944e+09 0.096289958 0.025540214 -20.059091 38.957273 6629.2633 1.3770945e+09 0.094552058 0.026061505 -20.140427 38.832876 6631.7019 1.2948411e+09 0.092215406 0.026002063 -20.221764 38.708480 6634.1405 1.2220414e+09 0.090055743 0.026337091 -20.303101 38.584082 6636.5791 1.1457813e+09 0.087954404 0.026324861 -20.384437 38.459684 6639.0177 1.0747789e+09 0.086153050 0.025621741 -20.463670 38.335286 6641.4563 1.0089051e+09 0.086324979 0.025149850 -20.540223 38.210889 6643.8949 9.5356950e+08 0.085059362 0.025327745 -20.613803 38.091322 6646.3336 9.0866584e+08 0.083862878 0.026092809 -20.681857 37.980733 6648.7722 8.6775104e+08 0.082705114 0.027481180 -20.749931 37.870122 6651.2108 8.2535364e+08 0.082408833 0.026645703 -20.826452 37.750542 6653.6494 7.8235746e+08 0.081987715 0.027857222 -20.903004 37.630930 6656.0880 7.4032505e+08 0.080246992 0.028100666 -20.979556 37.506971 6658.5266 6.9671787e+08 0.078703749 0.030995061 -21.056108 37.382574 6660.9652 6.6002704e+08 0.077208558 0.032503354 -21.132661 37.258176 6663.4039 6.2271927e+08 0.075878672 0.032371295 -21.209213 37.133777 6665.8425 5.8660661e+08 0.075618437 0.027166721 -21.282280 37.009379 6668.2811 5.5552678e+08 0.074729856 0.027719509 -21.354047 36.884983 6670.7197 5.2348957e+08 0.074357873 0.026995211 -21.428870 36.760587 6673.1583 4.9414855e+08 0.073899061 0.027695973 -21.505423 36.636190 6675.5969 4.6581965e+08 0.071766520 0.030941673 -21.579352 36.511793 6678.0355 4.3929782e+08 0.070273532 0.030912849 -21.651119 36.387395 6680.4741 4.1689791e+08 0.070519135 0.029543804 -21.722887 36.265189 6682.9128 3.9502917e+08 0.071153494 0.031121924 -21.794654 36.145576 6685.3514 3.7484112e+08 0.070723879 0.033075971 -21.866426 36.024195 6687.7900 3.5286929e+08 0.068276454 0.033902319 -21.938204 35.899780 6690.2286 3.3445192e+08 0.065909588 0.033089666 -22.009980 35.775369 6692.6672 3.1643255e+08 0.064660335 0.031990539 -22.081747 35.650970 6695.1058 2.9978370e+08 0.063823613 0.029840036 -22.153515 35.526573 6697.5444 2.8752771e+08 0.062966775 0.030160164 -22.225283 35.402176 6699.9830 2.7256136e+08 0.061300392 0.030683360 -22.297052 35.278250 6702.4217 2.5973734e+08 0.059844133 0.033213428 -22.368819 35.158637 6704.8603 2.4661320e+08 0.060237520 0.036599993 -22.440540 35.038978 6707.2989 2.3337284e+08 0.059898273 0.040144011 -22.507530 34.914587 6709.7375 2.1929484e+08 0.058956105 0.040663457 -22.574513 34.790189 6712.1761 2.0632071e+08 0.056634261 0.042156942 -22.645889 34.665791 6714.6147 1.9269843e+08 0.054348049 0.047349624 -22.717657 34.541394 6717.0533 1.8019584e+08 0.052082036 0.049870969 -22.793388 34.402279 6719.4920 1.6961889e+08 0.049945540 0.050902448 -22.869925 34.260148 6721.9306 1.5920286e+08 0.050061257 0.050584283 -22.936933 34.140476 6724.3692 1.5084646e+08 0.046925874 0.046843785 -23.003916 34.020864 6726.8078 1.4442773e+08 0.043539400 0.040958653 -23.070898 33.896902 6729.2464 1.3809279e+08 0.042817821 0.040881193 -23.137881 33.772505 6731.6850 1.2990877e+08 0.040647096 0.043113336 -23.204865 33.648108 6734.1236 1.2380334e+08 0.039393775 0.049346161 -23.271849 33.523711 6736.5622 1.1887333e+08 0.041199990 0.052480601 -23.345810 33.390343 6739.0009 1.1524541e+08 0.042063446 0.062827600 -23.422363 33.253640 6741.4395 1.0861643e+08 0.040273372 0.067012084 -23.486002 33.127997 6743.8781 1.0351843e+08 0.035175705 0.076970962 -23.548209 33.003580 6746.3167 99110304. 0.032451725 0.075305335 -23.614288 32.883057 6748.7553 97415090. 0.029661204 0.070990605 -23.681272 32.763444 6751.1939 94589973. 0.026301430 0.073793662 -23.744808 32.640385 6753.6325 87862363. 0.023464250 0.075024288 -23.807006 32.515989 6756.0711 80338446. 0.020573027 0.074349983 -23.878253 32.380387 6758.5098 77478294. 0.020210476 0.074783280 -23.954807 32.238214 6760.9484 76798266. 0.020685170 0.077869777 -24.019855 32.114124 6763.3870 74768711. 0.026216077 0.077616342 -24.082054 31.994511 6765.8256 71596180. 0.028158596 0.079681910 -24.150575 31.858850 6768.2642 65544440. 0.023889779 0.081806727 -24.221660 31.716679 6770.7028 59637040. 0.017388930 0.088584363 -24.284902 31.594420 6773.1414 55806699. 0.010523199 0.094499072 -24.347101 31.474807 6775.5801 55479386. 0.0013568128 0.10041378 -24.416343 31.337314 6778.0187 55795969. -0.031346280 0.10632849 -24.487429 31.195143 6780.4573 57358779. -0.010416893 0.11224320 -24.549949 31.074714 6782.8959 54580978. 0.035782674 0.11815791 -24.612149 30.955100