# # 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 = 50.909194 km # Date (UTC) = 2015-12-04T09:43:19.745 # Date (julian) = 2457360.90508964 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.8584 1.2226525e+11 0.029783108 0.031034313 110.54972 26.393977 6498.0246 1.0590539e+11 0.037372305 0.031687543 110.59506 26.288184 6500.1909 9.2898293e+10 0.045118498 0.032340773 110.64040 26.182404 6502.3572 8.1909480e+10 0.053114019 0.032994003 110.68573 26.076625 6504.5234 7.3266156e+10 0.061568211 0.033647233 110.73567 25.964700 6506.6897 6.4567190e+10 0.070261271 0.034300463 110.79092 25.845695 6508.8559 5.7099231e+10 0.079393555 0.034953693 110.84507 25.728169 6511.0222 5.0963739e+10 0.089155510 0.035606924 110.89040 25.622388 6513.1885 4.5872592e+10 0.099624851 0.036260154 110.93574 25.516608 6515.3547 4.2000296e+10 0.11101564 0.036913384 110.98108 25.410822 6517.5210 3.8644238e+10 0.12318252 0.037566614 111.02642 25.305028 6519.6872 3.5502155e+10 0.13594808 0.038219844 111.07176 25.199234 6521.8535 3.2529101e+10 0.14922451 0.038873074 111.12173 25.086108 6524.0198 2.9511349e+10 0.15692933 0.039433980 111.17273 24.971354 6526.1860 2.6731666e+10 0.16354295 0.039863107 111.22109 24.860776 6528.3523 2.4379806e+10 0.17038664 0.041721948 111.26643 24.754995 6530.5185 2.2353644e+10 0.17561170 0.044554643 111.31176 24.649215 6532.6848 2.0487656e+10 0.17979917 0.047256271 111.36174 24.532613 6534.8511 1.8612525e+10 0.18120071 0.048182632 111.41274 24.413609 6537.0173 1.6894212e+10 0.18060144 0.048693393 111.45935 24.300760 6539.1836 1.5399606e+10 0.17893482 0.049865849 111.50090 24.194980 6541.3498 1.4124959e+10 0.17672755 0.051213078 111.54246 24.089199 6543.5161 1.3029103e+10 0.17429726 0.051517347 111.58711 23.986500 6545.6824 1.2051354e+10 0.17189638 0.052461680 111.63245 23.884484 6547.8486 1.1154245e+10 0.17013380 0.053610080 111.67876 23.779549 6550.0149 1.0261567e+10 0.16846766 0.054989086 111.72977 23.660545 6552.1811 9.4157351e+09 0.16640855 0.055541173 111.78077 23.541541 6554.3474 8.6370923e+09 0.16399064 0.054839670 111.82404 23.436461 6556.5137 8.0038754e+09 0.16168678 0.053937607 111.86559 23.334459 6558.6799 7.4992825e+09 0.15906177 0.052659925 111.90780 23.231806 6560.8462 7.0708432e+09 0.15594994 0.051511364 111.95313 23.126026 6563.0124 6.6826740e+09 0.15318442 0.049913970 111.99846 23.020245 6565.1787 6.2733471e+09 0.15044448 0.048115474 112.04454 22.909754 6567.3450 5.8358447e+09 0.14799475 0.046325509 112.09129 22.795000 6569.5112 5.4074139e+09 0.14573280 0.044885697 112.13715 22.681789 6571.6775 5.0237373e+09 0.14358234 0.044318240 112.17871 22.575995 6573.8437 4.6897341e+09 0.14063297 0.042980394 112.22028 22.470200 6576.0100 4.4142303e+09 0.13763510 0.041359874 112.26184 22.366399 6578.1763 4.1707620e+09 0.13438689 0.038371266 112.30339 22.264396 6580.3425 3.9495456e+09 0.13080707 0.036204207 112.34495 22.162394 6582.5088 3.7230936e+09 0.12772293 0.035155339 112.39107 22.045455 6584.6750 3.4716213e+09 0.12511913 0.034147786 112.43782 21.926452 6586.8413 3.2367651e+09 0.12302458 0.033160421 112.48184 21.816384 6589.0076 3.0429450e+09 0.12124856 0.033030958 112.52340 21.714382 6591.1738 2.8867411e+09 0.11892270 0.029005762 112.56496 21.612379 6593.3401 2.7362632e+09 0.11689916 0.026786039 112.61108 21.499172 6595.5064 2.5695240e+09 0.11448152 0.025676081 112.65783 21.384418 6597.6726 2.4046234e+09 0.11250708 0.025510476 112.70185 21.274374 6599.8389 2.2646941e+09 0.11161859 0.024980184 112.74342 21.168580 6602.0051 2.1496863e+09 0.11116618 0.027512253 112.78498 21.062785 6604.1714 2.0473428e+09 0.10968243 0.026173044 112.82654 20.960325 6606.3377 1.9552113e+09 0.10904362 0.026897211 112.86809 20.858324 6608.5039 1.8579209e+09 0.10636905 0.023719048 112.91085 20.753361 6610.6702 1.7531256e+09 0.10333930 0.024643315 112.95761 20.638607 6612.8364 1.6456174e+09 0.10197583 0.023695800 113.00436 20.523852 6615.0027 1.5471706e+09 0.10079114 0.023251615 113.04654 20.420310 6617.1690 1.4724908e+09 0.099270105 0.023495266 113.08810 20.318308 6619.3352 1.4102588e+09 0.098327772 0.024606796 113.12988 20.213343 6621.5015 1.3402324e+09 0.097156135 0.024923230 113.17238 20.098589 6623.6677 1.2685888e+09 0.095200200 0.024739212 113.21488 19.983834 6625.8340 1.2027702e+09 0.093772183 0.026392813 113.25655 19.880283 6628.0003 1.1448379e+09 0.091724628 0.025703199 113.29811 19.778268 6630.1665 1.0939504e+09 0.090019050 0.025928712 113.33990 19.672298 6632.3328 1.0392053e+09 0.088274768 0.026072248 113.38240 19.553293 6634.4990 9.8372091e+08 0.086985144 0.026363245 113.42490 19.434288 6636.6653 9.3249369e+08 0.085804453 0.026291390 113.46657 19.330244 6638.8316 8.8510185e+08 0.085028453 0.025635414 113.50812 19.228242 6640.9978 8.4317914e+08 0.085867596 0.025148567 113.54990 19.123269 6643.1641 8.0090474e+08 0.085643013 0.025217392 113.59240 19.008514 6645.3303 7.6317405e+08 0.084814381 0.025606437 113.63490 18.893759 6647.4966 7.2789894e+08 0.083871792 0.026699242 113.67325 18.790228 6649.6629 6.9749428e+08 0.083065401 0.026719966 113.71103 18.688227 6651.8291 6.6927154e+08 0.082649038 0.027119567 113.75090 18.584243 6653.9954 6.3587626e+08 0.082110538 0.028033868 113.79765 18.473739 6656.1616 6.0314520e+08 0.080444972 0.028165290 113.84440 18.363235 6658.3279 5.7750666e+08 0.079010646 0.030642621 113.88326 18.260202 6660.4942 5.5332412e+08 0.077618345 0.032075168 113.92104 18.158186 6662.6604 5.3763291e+08 0.076216223 0.032673735 113.95993 18.053195 6664.8267 5.1650395e+08 0.075398817 0.029181287 114.00243 17.938440 6666.9929 4.8937359e+08 0.075086874 0.027102083 114.04493 17.823685 6669.1592 4.6793840e+08 0.073873601 0.028192189 114.08328 17.720162 6671.3255 4.4766777e+08 0.073880871 0.026869986 114.12105 17.618161 6673.4917 4.3123307e+08 0.073214091 0.028194629 114.15994 17.513178 6675.6580 4.1038203e+08 0.071158538 0.031058641 114.20244 17.398424 6677.8242 3.9225364e+08 0.069761937 0.031186466 114.24494 17.283669 6679.9905 3.7312566e+08 0.069913626 0.029449261 114.28328 17.180148 6682.1568 3.6189635e+08 0.070653773 0.030544319 114.32106 17.078146 6684.3230 3.4858981e+08 0.070904953 0.032670484 114.35994 16.974155 6686.4893 3.3281460e+08 0.070039077 0.034045759 114.40244 16.863650 6688.6555 3.1852683e+08 0.067459021 0.033936513 114.44494 16.753145 6690.8218 3.0484071e+08 0.066351688 0.033021684 114.48745 16.638881 6692.9881 2.9180954e+08 0.065647793 0.031617944 114.52996 16.524109 6695.1543 2.7655176e+08 0.065212433 0.029831125 114.57247 16.409347 6697.3206 2.6358969e+08 0.064717410 0.030131836 114.61497 16.294593 6699.4868 2.4838638e+08 0.063458625 0.031141209 114.65597 16.182744 6701.6531 2.3887074e+08 0.061753868 0.032367744 114.68997 16.084519 6703.8194 2.3350348e+08 0.061890497 0.035725561 114.72397 15.986294 6705.9856 2.2567092e+08 0.061932506 0.038420859 114.76247 15.879331 6708.1519 2.1823396e+08 0.061571284 0.040208982 114.80497 15.764577 6710.3182 2.1000071e+08 0.060265363 0.040558769 114.84747 15.650570 6712.4844 2.0017181e+08 0.058206056 0.042729350 114.88997 15.540065 6714.6507 1.9109667e+08 0.056179821 0.047352326 114.93248 15.429560 6716.8169 1.8254411e+08 0.054226302 0.049604627 114.97498 15.315558 6718.9832 1.7354501e+08 0.051838556 0.051343663 115.01748 15.200804 6721.1495 1.6903829e+08 0.052244618 0.050348930 115.05599 15.093815 6723.3157 1.5938824e+08 0.050959768 0.049545023 115.08999 14.995578 6725.4820 1.5321910e+08 0.046797066 0.041274954 115.12400 14.897340 6727.6482 1.4660672e+08 0.045682730 0.040096752 115.16500 14.785501 6729.8145 1.4092434e+08 0.044669891 0.040502546 115.20750 14.670747 6731.9808 1.3938608e+08 0.042967967 0.043701909 115.24801 14.557993 6734.1470 1.3563313e+08 0.042159124 0.049344754 115.28626 14.447488 6736.3133 1.3008952e+08 0.043973277 0.051539365 115.32501 14.336483 6738.4795 1.2432896e+08 0.045078955 0.059961161 115.36751 14.221729 6740.6458 1.1848760e+08 0.044394806 0.065153595 115.41001 14.106974 6742.8121 1.1212636e+08 0.041226956 0.070589482 115.44926 13.995471 6744.9783 1.1116041e+08 0.037723006 0.078550116 115.48751 13.884967 6747.1446 1.0549541e+08 0.033145247 0.067311388 115.52576 13.774463 6749.3108 1.0296600e+08 0.032533998 0.072192825 115.56401 13.663959 6751.4771 96385500. 0.029349929 0.073913391 115.60252 13.553203 6753.6434 89576403. 0.027360997 0.075059317 115.64502 13.438449 6755.8096 84858163. 0.025059580 0.074250379 115.68752 13.323694 6757.9759 79288602. 0.024195273 0.073778521 115.72702 13.211942 6760.1421 78976069. 0.024872571 0.076332326 115.76527 13.101437 6762.3084 75708668. 0.028970977 0.077553369 115.80352 12.990932 6764.4747 69190480. 0.031796940 0.079506025 115.84177 12.880428 6766.6409 63481286. 0.032427392 0.081163524 115.88002 12.769925 6768.8072 60390457. 0.028054101 0.083760456 115.91828 12.659404 6770.9734 59244107. 0.023987671 0.089240726 115.95654 12.548883 6773.1397 62629171. 0.020160806 0.094494860 115.99834 12.428139 6775.3060 58044958. 0.016063696 0.099748994 116.04205 12.301846 6777.4722 53697242. 0.011865937 0.10500313 116.08505 12.182354 6779.6385 52078995. 0.0076395147 0.11025726 116.12756 12.067600 6781.8047 49439959. 0.0030754547 0.11551140 116.16905 11.953851 6783.9710 51388134. -0.0016057017 0.12076553 116.20730 11.843347 6786.1373 51364116. -0.0080867612 0.12601966 116.24555 11.732842 6788.3035 51490026. -0.027161114 0.13127380 116.28380 11.622338 6790.4698 53579015. -0.017560303 0.13652793 116.32205 11.511834 6792.6360 51228895. 0.0045827538 0.14178206 116.36321 11.392946