# # 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 = 56.351516 km # Date (UTC) = 2011-12-17T09:37:40.979 # Date (julian) = 2455912.90116874 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.8261 6.9410069e+10 0.042289521 0.032230766 108.38344 33.763795 6502.1684 6.4757355e+10 0.051450291 0.032937090 108.44472 33.653501 6504.5108 6.0290852e+10 0.060949742 0.033643415 108.50599 33.543208 6506.8531 5.6172016e+10 0.070842007 0.034349739 108.56976 33.432906 6509.1954 5.2236248e+10 0.081144052 0.035056063 108.63513 33.322598 6511.5378 4.8574415e+10 0.091909247 0.035762387 108.69984 33.212293 6513.8801 4.5053988e+10 0.10313243 0.036468712 108.76111 33.102000 6516.2224 4.1789542e+10 0.11488731 0.037175036 108.82238 32.991707 6518.5647 3.8834953e+10 0.12722116 0.037881360 108.88366 32.884325 6520.9071 3.6151057e+10 0.14012262 0.038587685 108.94493 32.778118 6523.2494 3.3497390e+10 0.14992132 0.039240930 109.00823 32.667183 6525.5917 3.0613493e+10 0.15625918 0.039714680 109.07717 32.543101 6527.9341 2.7746773e+10 0.16220571 0.041394626 109.14542 32.420240 6530.2764 2.5122698e+10 0.16716112 0.044215671 109.20670 32.309946 6532.6187 2.2879484e+10 0.17132368 0.047201090 109.26797 32.199653 6534.9611 2.1002284e+10 0.17399702 0.048213409 109.32663 32.089351 6537.3034 1.9240000e+10 0.17506649 0.048828272 109.38383 31.979043 6539.6457 1.7594974e+10 0.17570123 0.050425287 109.44181 31.868738 6541.9881 1.6145700e+10 0.17427045 0.051006104 109.50309 31.758446 6544.3304 1.4855313e+10 0.17225067 0.051912384 109.56436 31.648153 6546.6727 1.3698113e+10 0.17001064 0.053018086 109.62259 31.540903 6549.0151 1.2620029e+10 0.16744526 0.053981645 109.67978 31.434695 6551.3574 1.1601370e+10 0.16566512 0.055361208 109.73697 31.327270 6553.6997 1.0676001e+10 0.16352504 0.054983315 109.79417 31.216962 6556.0421 9.8571729e+09 0.16104980 0.054006940 109.85137 31.106654 6558.3844 9.1193432e+09 0.15896102 0.052911741 109.90855 30.996359 6560.7267 8.4625989e+09 0.15604475 0.051619058 109.96574 30.886066 6563.0691 7.8746401e+09 0.15349701 0.049848463 110.02293 30.775773 6565.4114 7.3891195e+09 0.15093043 0.047851238 110.08012 30.665480 6567.7537 6.9427107e+09 0.14891122 0.045979880 110.13731 30.555187 6570.0961 6.4676027e+09 0.14729638 0.044877712 110.20131 30.436134 6572.4384 5.9841425e+09 0.14539891 0.043979092 110.26565 30.316649 6574.7807 5.5129129e+09 0.14324805 0.042480018 110.32443 30.204306 6577.1231 5.1264897e+09 0.14076721 0.040027055 110.38162 30.094012 6579.4654 4.8094331e+09 0.13773000 0.036814644 110.43881 29.985058 6581.8077 4.5249350e+09 0.13507663 0.035352015 110.49601 29.878836 6584.1501 4.2651502e+09 0.13235429 0.034433762 110.55321 29.772614 6586.4924 4.0170546e+09 0.12977957 0.033164931 110.60680 29.662804 6588.8347 3.7932192e+09 0.12717366 0.033101168 110.65990 29.552511 6591.1771 3.5870480e+09 0.12371416 0.029002107 110.71478 29.442218 6593.5194 3.4022344e+09 0.12052475 0.026619334 110.77197 29.331925 6595.8617 3.2286589e+09 0.11701979 0.025712936 110.82916 29.221632 6598.2041 3.0623160e+09 0.11477650 0.025309736 110.88232 29.115363 6600.5464 2.9087697e+09 0.11433958 0.026113176 110.93542 29.009155 6602.8887 2.7490554e+09 0.11372311 0.026758223 110.99457 28.893336 6605.2311 2.5910980e+09 0.11319724 0.026858890 111.05891 28.769237 6607.5734 2.4313095e+09 0.11177658 0.024574745 111.11920 28.651605 6609.9157 2.2828734e+09 0.10897334 0.023977947 111.17230 28.545397 6612.2581 2.1624799e+09 0.10679964 0.024127934 111.22541 28.439189 6614.6004 2.0497840e+09 0.10591021 0.023526841 111.27851 28.329249 6616.9427 1.9479885e+09 0.10458339 0.023430261 111.33161 28.218956 6619.2851 1.8527567e+09 0.10397871 0.024594696 111.38472 28.110564 6621.6274 1.7605763e+09 0.10302886 0.024881493 111.43782 28.004356 6623.9697 1.6777275e+09 0.10103735 0.024851096 111.49092 27.898148 6626.3121 1.5972167e+09 0.099630201 0.026193306 111.54404 27.791926 6628.6544 1.5252219e+09 0.097892315 0.025968787 111.59715 27.685704 6630.9967 1.4507841e+09 0.095971619 0.025930758 111.65142 27.569307 6633.3391 1.3747050e+09 0.094414318 0.026211450 111.70657 27.445226 6635.6814 1.3007959e+09 0.092627307 0.026501973 111.76091 27.328182 6638.0237 1.2291160e+09 0.091277008 0.025670608 111.81401 27.221975 6640.3661 1.1721558e+09 0.090940773 0.025225864 111.86712 27.115767 6642.7084 1.1200651e+09 0.090407078 0.025180685 111.92022 27.009558 6645.0507 1.0720498e+09 0.088992674 0.025475448 111.97333 26.903350 6647.3931 1.0274252e+09 0.087491708 0.026644728 112.02745 26.788246 6649.7354 9.7551311e+08 0.086544589 0.026619985 112.08260 26.664164 6652.0777 9.2266773e+08 0.086206559 0.027271906 112.13577 26.545828 6654.4201 8.7421758e+08 0.085590197 0.027857277 112.18480 26.439606 6656.7624 8.3228581e+08 0.083803347 0.028692564 112.23382 26.333384 6659.1047 7.9740565e+08 0.082258077 0.031812753 112.28641 26.227174 6661.4471 7.6652829e+08 0.080921755 0.032762646 112.33952 26.120966 6663.7894 7.3378896e+08 0.079557998 0.032264453 112.39349 26.009102 6666.1317 6.9917796e+08 0.079588490 0.026934263 112.44864 25.889615 6668.4741 6.6496560e+08 0.078663142 0.027890280 112.50225 25.773448 6670.8164 6.3171324e+08 0.078490302 0.026950412 112.55127 25.667241 6673.1587 6.0348897e+08 0.078069905 0.027696598 112.60029 25.561034 6675.5011 5.8269389e+08 0.076014377 0.030758061 112.64931 25.451550 6677.8434 5.6368799e+08 0.074380326 0.031159254 112.69833 25.341257 6680.1857 5.4238143e+08 0.074503007 0.029481521 112.74952 25.227710 6682.5281 5.1852604e+08 0.075184083 0.030827996 112.80467 25.108224 6684.8704 4.9091662e+08 0.075144312 0.032698260 112.85872 24.991099 6687.2127 4.7100223e+08 0.073192154 0.034224264 112.90775 24.884876 6689.5551 4.5312673e+08 0.070462502 0.033516388 112.95678 24.778653 6691.8974 4.3597455e+08 0.069232797 0.032789539 113.01027 24.662745 6694.2397 4.1780919e+08 0.068154089 0.030925049 113.06542 24.543259 6696.5821 3.9714384e+08 0.067789491 0.029917616 113.11490 24.431133 6698.9244 3.8318714e+08 0.066423651 0.031486640 113.15984 24.324925 6701.2667 3.6899583e+08 0.064526123 0.031800796 113.20586 24.217306 6703.6090 3.5271727e+08 0.064554657 0.035199272 113.26100 24.097820 6705.9514 3.3663634e+08 0.064711608 0.038359972 113.31615 23.978334 6708.2937 3.2232810e+08 0.064374480 0.040363424 113.36560 23.871200 6710.6360 3.1012561e+08 0.062891459 0.040620993 113.41462 23.764991 6712.9784 2.9909915e+08 0.060781208 0.043646486 113.46438 23.652372 6715.3207 2.8562315e+08 0.058689985 0.047706606 113.51494 23.532869 6717.6630 2.7254941e+08 0.056528029 0.049833256 113.56503 23.417441 6720.0054 2.6111077e+08 0.055170970 0.050419143 113.61405 23.311233 6722.3477 2.5055085e+08 0.055005070 0.050175340 113.66306 23.205026 6724.6900 2.3920688e+08 0.051341879 0.044164334 113.71340 23.091364 6727.0324 2.3041642e+08 0.048854788 0.040917248 113.76395 22.976473 6729.3747 2.2131629e+08 0.048255895 0.040795672 113.81450 22.858446 6731.7170 2.1252472e+08 0.046288071 0.043177076 113.86505 22.738960 6734.0594 2.0520979e+08 0.045087979 0.049350027 113.91276 22.626200 6736.4017 1.9616829e+08 0.046913211 0.051873697 113.95770 22.519992 6738.7440 1.9109387e+08 0.047849558 0.061417393 114.00296 22.413006 6741.0864 1.8704107e+08 0.046588651 0.066005041 114.05351 22.293520 6743.4287 1.8130477e+08 0.042195805 0.073939502 114.10406 22.174034 6745.7710 1.7467759e+08 0.039804167 0.078891026 114.15868 22.054532 6748.1134 1.6475308e+08 0.035573087 0.067613371 114.21384 21.935028 6750.4557 1.5583225e+08 0.032753150 0.072782271 114.26574 21.818786 6752.7980 1.4739004e+08 0.029924218 0.073210994 114.31628 21.703896 6755.1404 1.4046252e+08 0.028014335 0.074543801 114.36440 21.586565 6757.4827 1.3495194e+08 0.025935559 0.075275170 114.41035 21.467079 6759.8250 1.2892927e+08 0.026864168 0.076019050 114.45595 21.352305 6762.1674 1.2731887e+08 0.030792757 0.077780859 114.50088 21.246097 6764.5097 1.2256233e+08 0.033939770 0.079507704 114.54582 21.139889 6766.8520 1.1733115e+08 0.034455723 0.081641074 114.59585 21.025807 6769.1944 1.1301904e+08 0.029462105 0.084925697 114.64640 20.910917 6771.5367 1.0763385e+08 0.025239790 0.090606884 114.69695 20.792668 6773.8790 1.0750546e+08 0.021059989 0.096288071 114.74750 20.673183 6776.2214 1.0455217e+08 0.016872122 0.10196926 114.79550 20.553697 6778.5637 99975665. 0.012677361 0.10765045 114.84146 20.434211 6780.9060 95431171. 0.0084881737 0.11333163 114.88916 20.316466 6783.2484 88787407. 0.0042779167 0.11901282 114.93971 20.201575 6785.5907 87076387. 0.00013227007 0.12469401 114.99026 20.085749 6787.9330 84440497. -0.0040232088 0.13037519 115.04082 19.966245 6790.2754 81439864. -0.0081837497 0.13605638 115.09143 19.846419 6792.6177 77824625. -0.012358802 0.14173757 115.14395 19.715113 6794.9600 75725017. -0.016521856 0.14741876 115.19624 19.585265 6797.3024 72427113. -0.020722260 0.15309994 115.24679 19.465779 6799.6447 69498766. -0.024942815 0.15878113 115.29734 19.346293 6801.9870 68160453. -0.029154696 0.16446232 115.34354 19.231160 6804.3294 63652055. -0.033509436 0.17014350 115.38949 19.116269 6806.6717 64205839. -0.037775210 0.17582469 115.43545 18.997834 6809.0140 60742756. -0.042337691 0.18150588 115.48140 18.878348 6811.3564 55732734. -0.047306520 0.18718707 115.53010 18.761598 6813.6987 53951465. -0.052642393 0.19286825 115.58065 18.646708 6816.0410 49352417. -0.060193687 0.19854944 115.63203 18.524934 6818.3834 47637298. -0.082368223 0.20423063 115.68455 18.393628 6820.7257 46879914. -0.071903412 0.20991181 115.73369 18.268414 6823.0680 46900537. -0.043927910 0.21559300 115.77964 18.148928