# # 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 = 59.338896 km # Date (UTC) = 2014-12-26T10:12:28.876 # Date (julian) = 2457017.92533421 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.4068 8.7668098e+10 0.030516135 0.030596597 102.92167 30.448982 6496.9198 7.8180661e+10 0.038678526 0.031354382 102.98559 30.330647 6499.4328 7.0132946e+10 0.046724225 0.032112168 103.04695 30.212303 6501.9458 6.3085399e+10 0.054788270 0.032869953 103.10935 30.091288 6504.4588 5.6513786e+10 0.062986205 0.033627739 103.17838 29.953235 6506.9718 5.0580950e+10 0.071474835 0.034385525 103.24658 29.817299 6509.4847 4.5348906e+10 0.080436949 0.035143310 103.30794 29.698970 6511.9977 4.0986304e+10 0.090100740 0.035901096 103.36929 29.580642 6514.5107 3.7300672e+10 0.10064869 0.036658881 103.43065 29.462313 6517.0237 3.3918054e+10 0.11206291 0.037416667 103.49200 29.343985 6519.5367 3.0800207e+10 0.12442406 0.038174453 103.55098 29.225657 6522.0497 2.8034000e+10 0.13770804 0.038930266 103.60795 29.107328 6524.5627 2.5471882e+10 0.14531921 0.039626859 103.66608 28.988995 6527.0757 2.3120665e+10 0.15250069 0.040771416 103.72744 28.870651 6529.5887 2.0998909e+10 0.15857721 0.043173488 103.78880 28.752306 6532.1017 1.9045395e+10 0.16482087 0.046769120 103.84586 28.633977 6534.6147 1.7349547e+10 0.16902169 0.048116500 103.90283 28.515648 6537.1276 1.5843414e+10 0.17205875 0.048745405 103.96287 28.397319 6539.6406 1.4540670e+10 0.17381674 0.050419099 104.02422 28.278990 6542.1536 1.3407836e+10 0.17286723 0.051060562 104.08375 28.160662 6544.6666 1.2377583e+10 0.17113491 0.052185119 104.14073 28.042334 6547.1796 1.1409001e+10 0.16878817 0.053355665 104.19867 27.922003 6549.6926 1.0410496e+10 0.16658040 0.054672090 104.26277 27.788862 6552.2056 9.4572877e+09 0.16468377 0.055535020 104.32611 27.657308 6554.7186 8.6170258e+09 0.16248249 0.054847459 104.38308 27.538979 6557.2316 7.9430047e+09 0.16023130 0.053720960 104.44005 27.420650 6559.7446 7.4033696e+09 0.15763751 0.052303142 104.49703 27.302322 6562.2575 6.9003283e+09 0.15485746 0.050634837 104.55400 27.183993 6564.7705 6.4324115e+09 0.15234120 0.048422389 104.61098 27.068047 6567.2835 6.0053706e+09 0.15037597 0.046377456 104.66795 26.954102 6569.7965 5.6165913e+09 0.14885370 0.044904266 104.72492 26.839004 6572.3095 5.2615258e+09 0.14718858 0.044052907 104.78190 26.720660 6574.8225 4.9267947e+09 0.14507728 0.042459960 104.83888 26.602315 6577.3355 4.6236308e+09 0.14261805 0.039693398 104.89586 26.483986 6579.8485 4.3405079e+09 0.13992639 0.036604050 104.95283 26.365657 6582.3615 4.0999961e+09 0.13733385 0.035195428 105.00674 26.247328 6584.8745 3.8844133e+09 0.13480702 0.034039158 105.05933 26.129000 6587.3875 3.6658086e+09 0.13223204 0.033244214 105.11672 26.006559 6589.9004 3.4454112e+09 0.12953666 0.031259580 105.18082 25.878367 6592.4134 3.2202588e+09 0.12614341 0.027671956 105.24044 25.754009 6594.9264 3.0195268e+09 0.12282362 0.025663961 105.29303 25.635681 6597.4394 2.8533102e+09 0.11950940 0.025584065 105.34609 25.517352 6599.9524 2.7071870e+09 0.11824229 0.024987012 105.40307 25.399007 6602.4654 2.5706891e+09 0.11776223 0.027119484 105.46005 25.280662 6604.9784 2.4415219e+09 0.11715425 0.026652209 105.51341 25.165948 6607.4914 2.3235559e+09 0.11577113 0.024736712 105.56600 25.052002 6610.0044 2.2158679e+09 0.11273402 0.024007151 105.61859 24.935674 6612.5174 2.1223786e+09 0.11057842 0.023934202 105.67118 24.817345 6615.0303 2.0245202e+09 0.10955499 0.023252465 105.72549 24.695142 6617.5433 1.9127299e+09 0.10847675 0.023619391 105.78466 24.562020 6620.0563 1.7956974e+09 0.10808510 0.024785349 105.84229 24.433375 6622.5693 1.6899607e+09 0.10679054 0.024606459 105.89489 24.319414 6625.0823 1.6005359e+09 0.10524870 0.025495824 105.94748 24.205453 6627.5953 1.5243942e+09 0.10315663 0.025546765 106.00007 24.087334 6630.1083 1.4498972e+09 0.10168495 0.025928569 106.05266 23.969005 6632.6213 1.3825036e+09 0.099718979 0.026106842 106.10526 23.853614 6635.1343 1.3219601e+09 0.097889887 0.026419923 106.15785 23.739668 6637.6473 1.2593476e+09 0.096144357 0.025844403 106.21299 23.618270 6640.1603 1.1970511e+09 0.095689460 0.025251045 106.27216 23.485148 6642.6732 1.1322165e+09 0.095313648 0.025179247 106.32737 23.358936 6645.1862 1.0767977e+09 0.093824971 0.025538927 106.37558 23.244990 6647.6992 1.0261887e+09 0.092111589 0.026805924 106.42413 23.131042 6650.2122 9.8263956e+08 0.090796801 0.026303819 106.47673 23.017081 6652.7252 9.4030628e+08 0.089983287 0.027450054 106.52933 22.903120 6655.2382 8.9955526e+08 0.088528594 0.027708639 106.58323 22.773886 6657.7512 8.5968647e+08 0.086708614 0.029772462 106.63747 22.640765 6660.2642 8.2219588e+08 0.085194583 0.031866120 106.69044 22.522387 6662.7772 7.8654789e+08 0.083764485 0.032608236 106.74303 22.408440 6665.2902 7.4899017e+08 0.083159576 0.028071699 106.79642 22.287555 6667.8031 7.0797478e+08 0.082635214 0.027398467 106.85065 22.159363 6670.3161 6.6502332e+08 0.082135384 0.027182171 106.90212 22.035698 6672.8291 6.2778916e+08 0.081878014 0.027360176 106.95033 21.917369 6675.3421 5.9671470e+08 0.080014962 0.030453638 106.99931 21.799814 6677.8551 5.7498719e+08 0.078198375 0.031142592 107.05191 21.685853 6680.3681 5.5296275e+08 0.078389841 0.029520904 107.10451 21.571892 6682.8811 5.3044474e+08 0.079080258 0.031097729 107.15858 21.445185 6685.3941 5.0876472e+08 0.078676650 0.033121083 107.21281 21.316994 6687.9071 4.8851723e+08 0.076112426 0.033837018 107.26182 21.201160 6690.4201 4.7026491e+08 0.073792029 0.033067724 107.31003 21.087214 6692.9331 4.5199290e+08 0.072611490 0.031681833 107.36176 20.964925 6695.4460 4.3254652e+08 0.071827234 0.029777541 107.41600 20.836733 6697.9590 4.1219442e+08 0.070895939 0.030212632 107.47024 20.708542 6700.4720 3.9263431e+08 0.068806498 0.031017830 107.52447 20.580351 6702.9850 3.7565275e+08 0.067866329 0.033663267 107.57552 20.457379 6705.4980 3.6114964e+08 0.067788518 0.037553955 107.62372 20.339050 6708.0110 3.5097832e+08 0.067276769 0.040055549 107.67342 20.218276 6710.5240 3.3673091e+08 0.065719773 0.040599058 107.72766 20.090065 6713.0370 3.2275111e+08 0.063504036 0.043820353 107.77962 19.964985 6715.5500 3.0843641e+08 0.061373407 0.047941077 107.82345 19.851039 6718.0630 2.9834124e+08 0.059079592 0.049910462 107.86727 19.737093 6720.5759 2.8830999e+08 0.058334191 0.050353033 107.92086 19.609788 6723.0889 2.7930824e+08 0.057485009 0.049418545 107.97510 19.481597 6725.6019 2.6983979e+08 0.053076908 0.041200025 108.02933 19.353405 6728.1149 2.5610237e+08 0.052211381 0.039790975 108.08356 19.225214 6730.6279 2.4099977e+08 0.050710472 0.041239841 108.13345 19.101368 6733.1409 2.2886692e+08 0.049372607 0.044689282 108.18276 18.978107 6735.6539 2.2210513e+08 0.050146858 0.049987583 108.23113 18.862793 6738.1669 2.1583333e+08 0.051673596 0.058239835 108.27934 18.748847 6740.6799 2.1085884e+08 0.050920663 0.065211802 108.32818 18.626751 6743.1929 2.0434824e+08 0.046829753 0.072348466 108.37749 18.498540 6745.7059 1.9712424e+08 0.043923124 0.078863620 108.42947 18.370340 6748.2188 1.9055298e+08 0.039673303 0.068168227 108.48371 18.242149 6750.7318 1.7957550e+08 0.036844836 0.073253762 108.53540 18.113957 6753.2448 1.6620206e+08 0.033928969 0.073769576 108.58471 17.985766 6755.7578 1.5766936e+08 0.031339145 0.074273093 108.63641 17.857574 6758.2708 1.5028811e+08 0.030397487 0.074277970 108.69065 17.729382 6760.7838 1.4789050e+08 0.030700260 0.077555928 108.74262 17.603452 6763.2968 1.4246993e+08 0.036108774 0.077341624 108.79192 17.480191 6765.8098 1.3625354e+08 0.038412879 0.079679020 108.84123 17.354807 6768.3228 1.3007086e+08 0.034826007 0.082017406 108.89053 17.226616 6770.8358 1.2529166e+08 0.029656203 0.088906773 108.93983 17.098425 6773.3487 1.2020729e+08 0.024950362 0.095001879 108.98914 16.970233 6775.8617 1.1636594e+08 0.020207573 0.10109699 109.03844 16.843886 6778.3747 1.1410676e+08 0.015438626 0.10719209 109.08775 16.720624 6780.8877 1.1011673e+08 0.010671209 0.11328720 109.13706 16.595657 6783.4007 1.0726851e+08 0.0058898921 0.11938231 109.18636 16.467466 6785.9137 1.0186278e+08 0.0010893377 0.12547741 109.23567 16.340835 6788.4267 97401875. -0.0037240421 0.13157252 109.28498 16.217556 6790.9397 92287798. -0.0085589556 0.13766763 109.33429 16.092853 6793.4527 87226313. -0.013421065 0.14376273 109.38359 15.964662 6795.9657 83057046. -0.018289848 0.14985784 109.43474 15.831680 6798.4786 81331727. -0.023105839 0.15595295 109.49108 15.685173 6800.9916 77328830. -0.028006511 0.16204805 109.54400 15.549984 6803.5046 74375768. -0.032905880 0.16814316 109.59331 15.426722 6806.0176 72150467. -0.037808157 0.17423827 109.64262 15.303461 6808.5306 69747570. -0.042781748 0.18033337 109.69192 15.180200 6811.0436 66622250. -0.047917465 0.18642848 109.74426 15.046932 6813.5566 63561979. -0.053278363 0.19252359 109.80061 14.900425 6816.0696 61091346. -0.058972449 0.19861869 109.84910 14.769163 6818.5826 60327769. -0.065163685 0.20471380 109.89348 14.645902 6821.0956 57910676. -0.074040841 0.21080891 109.94537 14.508052 6823.6086 52864262. -0.10623149 0.21690401 110.00172 14.361544 6826.1215 49442162. -0.089076988 0.22299912 110.05206 14.234864 6828.6345 45996726. -0.039657956 0.22909423 110.10136 14.111602