# # 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 = 44.165423 km # Date (UTC) = 2011-01-03T09:52:42.496 # Date (julian) = 2455564.91160297 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.1039 9.5085538e+10 0.039622763 0.031711449 101.84065 41.145434 6500.9575 8.0022425e+10 0.050215320 0.032571928 101.93520 41.016047 6503.8110 6.9586617e+10 0.061054975 0.033432408 102.03097 40.884415 6506.6645 6.1255957e+10 0.072272365 0.034292887 102.13734 40.733252 6509.5181 5.3788214e+10 0.083894565 0.035153366 102.23839 40.588991 6512.3716 4.7492278e+10 0.096097676 0.036013845 102.32797 40.459602 6515.2252 4.2155839e+10 0.10901967 0.036874324 102.42271 40.323518 6518.0787 3.7540723e+10 0.12272170 0.037734803 102.52908 40.172355 6520.9323 3.3481794e+10 0.13729652 0.038595282 102.62671 40.032536 6523.7858 2.9868472e+10 0.14757593 0.039373876 102.71630 39.903132 6526.6394 2.6673273e+10 0.15508937 0.040338388 102.81161 39.762584 6529.4929 2.3662449e+10 0.16142326 0.043020950 102.91239 39.611421 6532.3465 2.0768983e+10 0.16713885 0.046973620 103.01316 39.464324 6535.2000 1.8279490e+10 0.17066122 0.048137536 103.11394 39.318762 6538.0535 1.6315522e+10 0.17354183 0.049182756 103.19951 39.183723 6540.9071 1.4708669e+10 0.17523744 0.051282637 103.28411 39.049358 6543.7606 1.3272189e+10 0.17504225 0.051581526 103.38376 38.904574 6546.6142 1.1919306e+10 0.17272843 0.052969900 103.48220 38.761339 6549.4677 1.0720963e+10 0.16865267 0.054442933 103.56681 38.631935 6552.3213 9.6867044e+09 0.16415353 0.055505902 103.65285 38.499594 6555.1748 8.7870368e+09 0.15965627 0.054706474 103.74802 38.348431 6558.0284 7.9966437e+09 0.15598374 0.053215134 103.83951 38.204864 6560.8819 7.2987717e+09 0.15162993 0.051479154 103.92411 38.075478 6563.7355 6.6985936e+09 0.14777102 0.049077614 104.01230 37.940600 6566.5890 6.1325750e+09 0.14467397 0.046849688 104.10748 37.795035 6569.4425 5.5992084e+09 0.14212283 0.044881227 104.19405 37.655666 6572.2961 5.1299900e+09 0.13981877 0.044060592 104.27367 37.521302 6575.1496 4.7052102e+09 0.13684477 0.042224575 104.36175 37.380848 6578.0032 4.3155069e+09 0.13340828 0.038644589 104.45693 37.235285 6580.8567 3.9664602e+09 0.12970236 0.035729013 104.54033 37.101963 6583.7103 3.6628584e+09 0.12663644 0.034662158 104.61996 36.972557 6586.5638 3.3975428e+09 0.12348708 0.033164008 104.70704 36.826868 6589.4174 3.1373307e+09 0.12041178 0.032217966 104.79662 36.675705 6592.2709 2.8686781e+09 0.11668979 0.027810391 104.88620 36.529931 6595.1245 2.6270706e+09 0.11281187 0.025636477 104.97402 36.387217 6597.9780 2.4218047e+09 0.10881769 0.025414108 105.05364 36.257830 6600.8315 2.2376287e+09 0.10686260 0.026699377 105.13493 36.124814 6603.6851 2.0682320e+09 0.10421374 0.026257702 105.22450 35.973652 6606.5386 1.9068681e+09 0.10214388 0.026536052 105.30840 35.830774 6609.3922 1.7683788e+09 0.097182969 0.023822428 105.38305 35.701384 6612.2457 1.6450134e+09 0.093059963 0.024137154 105.46324 35.565987 6615.0993 1.5259678e+09 0.091001276 0.023254586 105.55283 35.420403 6617.9528 1.4139045e+09 0.089552227 0.023755153 105.63367 35.284294 6620.8064 1.3123678e+09 0.088854015 0.025027047 105.70832 35.154906 6623.6599 1.2236498e+09 0.087237149 0.024736311 105.78834 35.016206 6626.5135 1.1370059e+09 0.085774811 0.025936717 105.87232 34.870643 6629.3670 1.0452071e+09 0.084507254 0.026042751 105.95630 34.720660 6632.2205 9.5839587e+08 0.082900244 0.026058790 106.04023 34.569625 6635.0741 8.8718820e+08 0.081534918 0.026410898 106.11490 34.440183 6637.9276 8.2488528e+08 0.080199272 0.025707085 106.18955 34.310760 6640.7812 7.6720493e+08 0.080481634 0.025175073 106.26790 34.165330 6643.6347 7.1300240e+08 0.079978804 0.025288454 106.34551 34.023121 6646.4883 6.6386920e+08 0.078808553 0.026172892 106.42017 33.893717 6649.3418 6.2186320e+08 0.077564464 0.027162512 106.49667 33.761105 6652.1954 5.8346621e+08 0.077122805 0.027304273 106.58065 33.615540 6655.0489 5.4368930e+08 0.075943449 0.027630424 106.66232 33.469976 6657.9025 5.0290354e+08 0.073805506 0.029947926 106.74070 33.324414 6660.7560 4.6877614e+08 0.071861226 0.032313162 106.81363 33.188979 6663.6095 4.3851614e+08 0.070088478 0.032314294 106.88330 33.059589 6666.4631 4.1203089e+08 0.069743368 0.026998833 106.95834 32.920225 6669.3166 3.8711151e+08 0.068418976 0.028030499 107.03672 32.774663 6672.1702 3.5942138e+08 0.068276146 0.026978237 107.11510 32.629100 6675.0237 3.3443290e+08 0.066664337 0.029843795 107.19348 32.483536 6677.8773 3.0749049e+08 0.064660676 0.031111089 107.27188 32.337950 6680.7308 2.8603249e+08 0.065339403 0.029599230 107.34801 32.196551 6683.5844 2.6615403e+08 0.066359390 0.032044966 107.41768 32.067163 6686.4379 2.5025021e+08 0.065733756 0.034015864 107.48813 31.933747 6689.2914 2.3628183e+08 0.062715844 0.033753673 107.56091 31.788182 6692.1450 2.2017755e+08 0.061886106 0.032596955 107.63628 31.642619 6694.9985 2.0737548e+08 0.061495515 0.029861520 107.71466 31.497056 6697.8521 1.9369290e+08 0.061032947 0.030199098 107.78925 31.351493 6700.7056 1.8329699e+08 0.059117304 0.031191105 107.86204 31.205929 6703.5592 1.7218098e+08 0.058909826 0.035074472 107.93482 31.060365 6706.4127 1.5942324e+08 0.059207610 0.039164714 108.00727 30.916491 6709.2663 1.5004123e+08 0.058702247 0.040963185 108.07694 30.787102 6712.1198 1.3917224e+08 0.056514871 0.042052410 108.14691 30.656176 6714.9734 1.3127824e+08 0.054292511 0.047376585 108.21970 30.510590 6717.8269 1.2549714e+08 0.051892755 0.049823121 108.29249 30.365011 6720.6804 1.1902757e+08 0.051110132 0.050340924 108.36528 30.219448 6723.5340 1.1308824e+08 0.049897613 0.049666761 108.43806 30.073884 6726.3875 1.0587594e+08 0.045618593 0.040954863 108.51084 29.928320 6729.2411 98849375. 0.045029373 0.040884739 108.57950 29.786882 6732.0946 93618105. 0.042984129 0.043757630 108.64668 29.646917 6734.9482 90594231. 0.042962519 0.049296551 108.71919 29.501629 6737.8017 85309691. 0.045284841 0.056689465 108.79197 29.356065 6740.6553 80345596. 0.045053514 0.065169770 108.86475 29.210502 6743.5088 74617362. 0.040617312 0.074479863 108.93542 29.064939 6746.3624 71292364. 0.037304071 0.074774484 109.00260 28.919375 6749.2159 68794957. 0.034626579 0.072218819 109.06978 28.777127 6752.0694 65048459. 0.030513979 0.074054114 109.13696 28.637162 6754.9230 58703164. 0.029752561 0.074729184 109.20866 28.492684 6757.7765 53015181. 0.029119251 0.074383473 109.28133 28.347119 6760.6301 47943994. 0.037495782 0.077262810 109.34852 28.201534 6763.4836 47072978. 0.037637558 0.077910663 109.41796 28.052585 6766.3372 48935515. 0.026995374 0.080476439 109.49474 27.892622