# # 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 = 54.980209 km # Date (UTC) = 2015-01-20T10:12:30.318 # Date (julian) = 2457042.92535090 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.0877 6.7369974e+10 0.053100382 0.032912746 100.76271 42.398005 6504.2617 6.1265596e+10 0.062337635 0.033568310 100.85579 42.253224 6506.4357 5.5592779e+10 0.071780427 0.034223873 100.94353 42.116730 6508.6097 5.1137101e+10 0.081671564 0.034879436 101.03128 41.980236 6510.7837 4.7185788e+10 0.091951447 0.035534999 101.11903 41.843741 6512.9577 4.3691460e+10 0.10266935 0.036190563 101.20417 41.707247 6515.1317 4.0613825e+10 0.11385763 0.036846126 101.28704 41.570754 6517.3057 3.7355379e+10 0.12528210 0.037501689 101.37657 41.423301 6519.4797 3.4053551e+10 0.13693721 0.038157252 101.47325 41.264054 6521.6537 3.0808689e+10 0.14881577 0.038812816 101.55995 41.121265 6523.8277 2.7880978e+10 0.15568724 0.039384248 101.64282 40.984770 6526.0017 2.5433756e+10 0.16072167 0.039669831 101.72569 40.848276 6528.1757 2.3238017e+10 0.16669570 0.041581836 101.80856 40.711783 6530.3497 2.1277787e+10 0.17111877 0.044318213 101.88840 40.575304 6532.5237 1.9519904e+10 0.17481676 0.047121652 101.96638 40.438834 6534.6977 1.7980097e+10 0.17671802 0.048139718 102.04714 40.302350 6536.8717 1.6605187e+10 0.17731987 0.048570391 102.13001 40.165855 6539.0456 1.5377494e+10 0.17710362 0.049698886 102.21036 40.029360 6541.2196 1.4278100e+10 0.17598492 0.051255299 102.28836 39.892867 6543.3936 1.3166034e+10 0.17401640 0.051485207 102.37242 39.745767 6545.5676 1.2052523e+10 0.17175186 0.052460653 102.46342 39.586520 6547.7416 1.1003342e+10 0.16986833 0.053569397 102.54521 39.443379 6549.9156 1.0103344e+10 0.16815149 0.054899388 102.62321 39.306884 6552.0896 9.3677159e+09 0.16614923 0.055564205 102.70121 39.170390 6554.2636 8.7135840e+09 0.16365561 0.054837913 102.77920 39.033896 6556.4376 8.1011722e+09 0.16143455 0.053948786 102.85425 38.897403 6558.6116 7.5218805e+09 0.15907423 0.052718122 102.92737 38.760910 6560.7856 6.9959038e+09 0.15631186 0.051565966 103.00319 38.624415 6562.9596 6.5237583e+09 0.15391515 0.049966786 103.08119 38.487920 6565.1336 6.1003649e+09 0.15155421 0.048166668 103.15674 38.353875 6567.3076 5.7216738e+09 0.14937950 0.046357087 103.22986 38.222258 6569.4816 5.3726815e+09 0.14740707 0.044883770 103.30298 38.088440 6571.6556 5.0437099e+09 0.14566171 0.044324214 103.37610 37.951945 6573.8296 4.7389064e+09 0.14317743 0.042991737 103.44922 37.815451 6576.0036 4.4646167e+09 0.14067937 0.041367238 103.52234 37.678957 6578.1776 4.2075249e+09 0.13801790 0.038369151 103.59547 37.542464 6580.3516 3.9715870e+09 0.13514027 0.036195819 103.66859 37.405971 6582.5256 3.7608130e+09 0.13244526 0.035150763 103.74171 37.269477 6584.6996 3.5670729e+09 0.12965240 0.034134412 103.81483 37.132982 6586.8736 3.3896727e+09 0.12674680 0.033160003 103.88676 36.996487 6589.0476 3.2141552e+09 0.12394740 0.032951550 103.95501 36.859994 6591.2216 3.0352733e+09 0.12101091 0.028951867 104.02420 36.723500 6593.3956 2.8723229e+09 0.11869186 0.026734441 104.09732 36.587007 6595.5696 2.7227795e+09 0.11621787 0.025682639 104.16975 36.451209 6597.7436 2.5835164e+09 0.11429882 0.025488079 104.23799 36.319590 6599.9176 2.4496620e+09 0.11357869 0.024984918 104.30624 36.187525 6602.0916 2.3199752e+09 0.11324056 0.027438480 104.37449 36.051030 6604.2656 2.2030471e+09 0.11201728 0.026228969 104.44273 35.914535 6606.4396 2.0931664e+09 0.11154468 0.026714056 104.51098 35.778041 6608.6136 1.9893470e+09 0.10896275 0.023716149 104.57923 35.641548 6610.7876 1.8893233e+09 0.10605857 0.024755487 104.64747 35.505055 6612.9616 1.7943030e+09 0.10493714 0.023602303 104.71572 35.368561 6615.1356 1.6965313e+09 0.10380367 0.023255703 104.78397 35.236636 6617.3096 1.6049817e+09 0.10267110 0.023541885 104.85221 35.105017 6619.4836 1.5283514e+09 0.10199285 0.024642590 104.90912 34.984197 6621.6576 1.4704900e+09 0.10082177 0.024871495 104.96457 34.864768 6623.8316 1.4213730e+09 0.098768118 0.024799905 105.02695 34.736099 6626.0056 1.3627970e+09 0.097462151 0.026583824 105.09520 34.599603 6628.1796 1.3020250e+09 0.095567714 0.025775996 105.16105 34.463109 6630.3536 1.2358160e+09 0.093940677 0.025929173 105.22443 34.326616 6632.5275 1.1755391e+09 0.092171674 0.026095603 105.28780 34.192261 6634.7015 1.1206034e+09 0.090472506 0.026378017 105.35117 34.060642 6636.8755 1.0681706e+09 0.088729848 0.026209743 105.41454 33.927135 6639.0495 1.0237845e+09 0.087529462 0.025610367 105.47791 33.790641 6641.2235 9.7536367e+08 0.088264469 0.025149060 105.54129 33.655785 6643.3975 9.2842500e+08 0.087869495 0.025252642 105.60466 33.524165 6645.5715 8.8230083e+08 0.087120695 0.025719428 105.66803 33.391158 6647.7455 8.3797039e+08 0.086325485 0.026830307 105.73141 33.254665 6649.9195 7.9637112e+08 0.085750194 0.026366159 105.79478 33.118172 6652.0935 7.5844245e+08 0.085381144 0.027276255 105.85815 32.981677 6654.2675 7.2955383e+08 0.084689363 0.027922257 105.92064 32.846068 6656.4415 6.9963656e+08 0.082946161 0.028410941 105.97913 32.714449 6658.6155 6.7195155e+08 0.081478247 0.031152720 106.03827 32.582194 6660.7895 6.4190542e+08 0.080174724 0.032343633 106.10164 32.445701 6662.9635 6.1156832e+08 0.079042740 0.032503682 106.16463 32.309593 6665.1375 5.8525268e+08 0.078447450 0.028321807 106.22312 32.177973 6667.3115 5.5409165e+08 0.078040709 0.027217882 106.28175 32.046218 6669.4855 5.3022276e+08 0.077077321 0.027857050 106.34513 31.909725 6671.6595 5.0907042e+08 0.076969148 0.026874747 106.40850 31.773231 6673.8335 4.8731475e+08 0.076233703 0.028705787 106.46711 31.641497 6676.0075 4.6674570e+08 0.073952509 0.031718560 106.52561 31.509878 6678.1815 4.4193393e+08 0.072980890 0.030815218 106.57734 31.389533 6680.3555 4.2312361e+08 0.073305695 0.029518183 106.62853 31.270103 6682.5295 4.1178892e+08 0.073823633 0.030829098 106.68396 31.143598 6684.7035 3.9969861e+08 0.073685269 0.032689791 106.74245 31.011980 6686.8775 3.8970369e+08 0.072125458 0.034271623 106.80095 30.877782 6689.0515 3.7649144e+08 0.069328049 0.033969675 106.85945 30.741286 6691.2255 3.6251069e+08 0.068562153 0.032948063 106.91795 30.607121 6693.3995 3.4788766e+08 0.067832862 0.031467041 106.97644 30.475502 6695.5735 3.3172325e+08 0.067628601 0.029754132 107.03286 30.341804 6697.7475 3.1823019e+08 0.067057581 0.030185860 107.08649 30.205311 6699.9215 3.0396292e+08 0.065683010 0.030740172 107.14194 30.070646 6702.0955 2.9273755e+08 0.064124694 0.032952968 107.20043 29.939026 6704.2695 2.8054464e+08 0.064593088 0.036309879 107.25735 29.807407 6706.4435 2.7018361e+08 0.064540496 0.039218231 107.31097 29.675788 6708.6175 2.6187193e+08 0.064086678 0.040715980 107.36592 29.542841 6710.7915 2.5256922e+08 0.062567961 0.040651415 107.42442 29.406346 6712.9655 2.4503729e+08 0.060566578 0.043622503 107.48184 29.270929 6715.1395 2.3364890e+08 0.058609116 0.047521226 107.53547 29.139310 6717.3135 2.2358788e+08 0.056565354 0.049854880 107.58909 29.007692 6719.4875 2.1618244e+08 0.054711204 0.050906719 107.64271 28.876073 6721.6615 2.0882858e+08 0.054942991 0.050503198 107.69691 28.743878 6723.8355 1.9955377e+08 0.053132345 0.049834890 107.75541 28.607384 6726.0095 1.8835898e+08 0.049198078 0.040951453 107.81358 28.471215 6728.1834 1.8189356e+08 0.048421365 0.039888105 107.86720 28.339596 6730.3574 1.7882012e+08 0.046820892 0.040869004 107.92096 28.207640 6732.5314 1.7580533e+08 0.045235095 0.043838046 107.98351 28.054110 6734.7054 1.6831182e+08 0.044888424 0.049311155 108.04377 27.906206 6736.8794 1.6028179e+08 0.046570623 0.053679774 108.09739 27.774587 6739.0534 1.5227123e+08 0.047303275 0.062891947 108.15001 27.642968 6741.2274 1.4680986e+08 0.045918285 0.066407345 108.19876 27.511349 6743.4014 1.4075820e+08 0.041832245 0.073755485 108.24826 27.378979 6745.5754 1.3206848e+08 0.039487058 0.078808792 108.30188 27.242486 6747.7494 1.2519229e+08 0.035150703 0.067103162 108.35550 27.106493 6749.9234 1.1789635e+08 0.032685949 0.072025098 108.40912 26.974873 6752.0974 1.1716124e+08 0.029622257 0.074021741 108.46275 26.843254 6754.2714 1.1611601e+08 0.028284841 0.075776994 108.51637 26.711635 6756.4454 1.1257824e+08 0.025530055 0.075313034 108.56997 26.580016 6758.6194 1.0815326e+08 0.025570578 0.075015158 108.61874 26.448396 6760.7934 1.0149861e+08 0.025798400 0.077574273 108.66749 26.316776 6762.9674 99524633. 0.030770157 0.076490333 108.72934 26.164346 6765.1414 96705101. 0.033032760 0.079557007 108.78927 26.014961 6767.3154 93919397. 0.032026593 0.081622593 108.83802 25.883342 6769.4894 90704216. 0.027042371 0.085641279 108.88677 25.751722 6771.6634 88510937. 0.022932865 0.090914180 108.93552 25.620103 6773.8374 89003320. 0.018900696 0.096187080 108.98427 25.488484 6776.0114 86395019. 0.014785489 0.10145998 109.03302 25.356865 6778.1854 80305759. 0.010529171 0.10673288 109.08226 25.224453 6780.3594 74776669. 0.0062397203 0.11200578 109.14482 25.070892 6782.5334 68407167. 0.0018460636 0.11727868 109.20355 24.923428 6784.7074 66950821. -0.0022716593 0.12255158 109.25229 24.791809 6786.8814 66815334. -0.0063022944 0.12782448 109.30104 24.660191 6789.0554 64631383. -0.010528026 0.13309738 109.34979 24.528572 6791.2294 62777479. -0.014806191 0.13837028 109.39996 24.393110 6793.4034 58063870. -0.019533088 0.14364318 109.45683 24.239550 6795.5774 55059460. -0.024348754 0.14891608 109.51032 24.095136 6797.7514 55440107. -0.029020806 0.15418898 109.55906 23.963517 6799.9254 54816822. -0.034375361 0.15946188 109.60603 23.831898 6802.0994 54011223. -0.040844198 0.16473478 109.64991 23.700280 6804.2734 51435406. -0.051232932 0.17000768 109.69786 23.563565 6806.4474 49430294. -0.091921793 0.17528058 109.75472 23.415721 6808.6214 48821096. -0.065215192 0.18055348 109.80708 23.276889 6810.7954 45521193. -0.0017663222 0.18582638 109.85582 23.145270