# # 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 = 61.626133 km # Date (UTC) = 2014-11-18T09:44:30.782 # Date (julian) = 2456979.90591182 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6491.8556 8.6074002e+10 0.031361031 0.029827288 108.91479 30.842598 6494.3190 7.5921020e+10 0.039490599 0.030570130 108.98107 30.682409 6496.7825 6.7643429e+10 0.047235193 0.031312971 109.04736 30.522219 6499.2459 6.0511109e+10 0.054570020 0.032055813 109.11365 30.362029 6501.7093 5.4415953e+10 0.061477065 0.032798655 109.17993 30.201839 6504.1728 4.8998055e+10 0.068042619 0.033541497 109.24621 30.041648 6506.6362 4.4323704e+10 0.074431074 0.034284338 109.31250 29.878750 6509.0996 4.0217556e+10 0.080969009 0.035027180 109.37879 29.713037 6511.5631 3.6714687e+10 0.087983316 0.035770022 109.44132 29.551080 6514.0265 3.3594027e+10 0.095804522 0.036512864 109.50208 29.390890 6516.4899 3.0826713e+10 0.10479115 0.037255705 109.56764 29.230700 6518.9534 2.8294674e+10 0.11514287 0.037998547 109.63360 29.070509 6521.4168 2.5800773e+10 0.12689205 0.038741389 109.69436 28.910320 6523.8802 2.3581357e+10 0.13485495 0.039397276 109.75323 28.755115 6526.3437 2.1630577e+10 0.14208431 0.040028382 109.80640 28.614951 6528.8071 1.9978899e+10 0.15000393 0.042082757 109.86192 28.471185 6531.2705 1.8565608e+10 0.15791786 0.045622444 109.92821 28.310995 6533.7340 1.7149139e+10 0.16543066 0.047831501 109.99245 28.150805 6536.1974 1.5789178e+10 0.16907414 0.047967120 110.05322 27.990616 6538.6608 1.4510947e+10 0.17180599 0.049478472 110.11398 27.830426 6541.1243 1.3301239e+10 0.17103192 0.051286230 110.17474 27.670236 6543.5877 1.2198963e+10 0.16858933 0.051536138 110.23550 27.510046 6546.0511 1.1221443e+10 0.16594436 0.052506600 110.29626 27.349857 6548.5146 1.0413230e+10 0.16442754 0.053821313 110.34990 27.208461 6550.9780 9.7310946e+09 0.16252819 0.055230242 110.40306 27.068298 6553.4414 9.0950921e+09 0.16112901 0.055113165 110.45803 26.915525 6555.9049 8.4363140e+09 0.15897537 0.054093061 110.51359 26.760533 6558.3683 7.7651057e+09 0.15729548 0.052925469 110.57436 26.600343 6560.8317 7.1762715e+09 0.15477003 0.051524396 110.63323 26.445135 6563.2952 6.7115637e+09 0.15267819 0.049586929 110.68639 26.304972 6565.7586 6.3283040e+09 0.15058679 0.047456999 110.73993 26.161209 6568.2220 5.9819744e+09 0.14933807 0.045567562 110.79517 26.001019 6570.6855 5.6286728e+09 0.14815468 0.044633566 110.85245 25.840829 6573.1489 5.2615440e+09 0.14676713 0.043537995 110.91321 25.680640 6575.6123 4.9104623e+09 0.14485843 0.041760347 110.97088 25.523538 6578.0758 4.5979483e+09 0.14272613 0.038529974 111.02612 25.368871 6580.5392 4.3327444e+09 0.14026259 0.036022457 111.07619 25.225064 6583.0026 4.1111602e+09 0.13816453 0.035020335 111.12452 25.084901 6585.4661 3.8971807e+09 0.13569523 0.033598166 111.18130 24.931126 6587.9295 3.6795088e+09 0.13348460 0.033364310 111.24206 24.770936 6590.3929 3.4767143e+09 0.13061663 0.030331156 111.29202 24.632339 6592.8564 3.2964951e+09 0.12786317 0.027241736 111.34036 24.496989 6595.3198 3.1339680e+09 0.12519206 0.025656735 111.39422 24.341752 6597.7832 2.9631816e+09 0.12316162 0.025475570 111.44946 24.181563 6600.2467 2.7819902e+09 0.12294062 0.025496969 111.50470 24.021373 6602.7101 2.6173010e+09 0.12270090 0.026910666 111.55870 23.865654 6605.1735 2.4896262e+09 0.12226108 0.026810621 111.60703 23.730325 6607.6370 2.3788168e+09 0.12078988 0.024449234 111.65613 23.592240 6610.1004 2.2804748e+09 0.11779787 0.024098905 111.71136 23.432049 6612.5638 2.1682798e+09 0.11596087 0.023899480 111.76660 23.273519 6615.0273 2.0500211e+09 0.11512828 0.023252370 111.82184 23.118854 6617.4907 1.9511465e+09 0.11405440 0.023601938 111.87132 22.971297 6619.9541 1.8715650e+09 0.11346630 0.024756130 111.91482 22.831133 6622.4176 1.8012186e+09 0.11201248 0.024646852 111.96327 22.684862 6624.8810 1.7218927e+09 0.11033403 0.025333902 112.01850 22.530195 6627.3444 1.6422148e+09 0.10817940 0.025449858 112.06952 22.387340 6629.8079 1.5667062e+09 0.10677962 0.025963041 112.11785 22.252010 6632.2713 1.4996362e+09 0.10467115 0.026064876 112.16693 22.103212 6634.7347 1.4342920e+09 0.10284670 0.026380437 112.21665 21.943022 6637.1982 1.3551697e+09 0.10105006 0.026064359 112.27041 21.786873 6639.6616 1.2808563e+09 0.10021478 0.025391606 112.32564 21.632208 6642.1250 1.2224542e+09 0.10002685 0.025156812 112.37007 21.495351 6644.5885 1.1721307e+09 0.098495592 0.025407206 112.41356 21.360020 6647.0519 1.1280476e+09 0.096962715 0.026465102 112.46706 21.203507 6649.5153 1.0771337e+09 0.095869850 0.026923335 112.52181 21.044354 6651.9788 1.0330952e+09 0.095487713 0.027234244 112.56531 20.909025 6654.4422 9.9627788e+08 0.094672923 0.027847847 112.60881 20.773696 6656.9056 9.6074690e+08 0.092635321 0.028818280 112.65836 20.619558 6659.3691 9.1825987e+08 0.091056163 0.031757612 112.70807 20.464891 6661.8325 8.6931872e+08 0.089638479 0.032958956 112.75778 20.310225 6664.2959 8.2657665e+08 0.088400122 0.031123307 112.80531 20.162365 6666.7594 7.9101269e+08 0.088258278 0.027056566 112.84881 20.027035 6669.2228 7.5855943e+08 0.086983414 0.028126879 112.89563 19.886233 6671.6862 7.2532399e+08 0.086914871 0.026875128 112.95087 19.731567 6674.1497 6.9422846e+08 0.085888179 0.029081038 113.00056 19.583756 6676.6131 6.6708843e+08 0.083221885 0.032108858 113.04406 19.443593 6679.0765 6.4473303e+08 0.082122871 0.030204534 113.09007 19.297577 6681.5400 6.2186271e+08 0.083016357 0.030071606 113.13978 19.142911 6684.0034 5.9377791e+08 0.083152448 0.032654264 113.18622 18.988244 6686.4668 5.6438108e+08 0.081948072 0.034032690 113.23040 18.833578 6688.9303 5.4254691e+08 0.078484286 0.033999926 113.27405 18.694050 6691.3937 5.2398170e+08 0.077067887 0.032908378 113.31756 18.558720 6693.8571 5.0763229e+08 0.075600088 0.031310042 113.36549 18.413530 6696.3206 4.8711054e+08 0.075030439 0.029808971 113.41520 18.264387 6698.7840 4.6526817e+08 0.073488633 0.031293934 113.46492 18.110254 6701.2474 4.4528230e+08 0.071261996 0.031772487 113.51406 17.957389 6703.7109 4.2542162e+08 0.071060746 0.035454026 113.55755 17.822060 6706.1743 4.0721138e+08 0.071026056 0.038749743 113.60107 17.686264 6708.6377 3.8976570e+08 0.070492576 0.040738037 113.64526 17.531597 6711.1012 3.7461130e+08 0.068627912 0.040807321 113.69063 17.376930 6713.5646 3.6148253e+08 0.066178675 0.045728624 113.74034 17.222263 6716.0280 3.4594991e+08 0.064071307 0.048442635 113.78755 17.075399 6718.4915 3.3341468e+08 0.061459886 0.050577820 113.83105 16.940070 6720.9549 3.2071912e+08 0.061215305 0.050309126 113.87478 16.800121 6723.4183 3.0842306e+08 0.059712238 0.049602250 113.91897 16.650978 6725.8818 2.9660870e+08 0.055287979 0.041025229 113.96606 16.498941 6728.3452 2.8135304e+08 0.054393251 0.040117346 114.01577 16.344275 6730.8086 2.6838484e+08 0.052562798 0.041487623 114.05760 16.203410 6733.2721 2.5944208e+08 0.051001541 0.045401375 114.09626 16.068080 6735.7355 2.5505044e+08 0.051696995 0.050074208 114.13849 15.920283 6738.1989 2.4829533e+08 0.052965068 0.058416247 114.18268 15.765617 6740.6624 2.3697786e+08 0.052132114 0.065181882 114.23148 15.615560 6743.1258 2.2522697e+08 0.048102093 0.071896004 114.28106 15.466285 6745.5892 2.1643518e+08 0.044919762 0.078814590 114.32525 15.311619 6748.0527 2.0820942e+08 0.040541931 0.067293917 114.36944 15.158133 6750.5161 1.9818373e+08 0.037600461 0.072885372 114.41363 15.008991 6752.9795 1.8563249e+08 0.034647197 0.073000988 114.45755 14.865420 6755.4430 1.7899949e+08 0.032239916 0.074411138 114.50104 14.730089 6757.9064 1.7485306e+08 0.030738975 0.073989412 114.54477 14.590142 6760.3698 1.7222774e+08 0.031358032 0.076766502 114.58896 14.440999 6762.8333 1.6640032e+08 0.036272017 0.076706739 114.63315 14.288963 6765.2967 1.5899250e+08 0.039028132 0.079585354 114.67735 14.134297 6767.7601 1.5610330e+08 0.037164962 0.081124628 114.72153 13.983573 6770.2236 1.5153023e+08 0.031945227 0.087421916 114.76572 13.834431 6772.6870 1.4468618e+08 0.027524387 0.093396824 114.80991 13.680299 6775.1504 1.3760165e+08 0.023124153 0.099371733 114.85410 13.526147 6777.6139 1.3071324e+08 0.018746967 0.10534664 114.89829 13.377005 6780.0773 1.2682925e+08 0.014371032 0.11132155 114.94249 13.227863 6782.5407 1.2536978e+08 0.0099949030 0.11729646 114.98668 13.078719 6785.0042 1.1847939e+08 0.0056979562 0.12327137 115.03087 12.926968 6787.4676 1.1295871e+08 0.0014209584 0.12924628 115.07505 12.772303 6789.9310 1.0664300e+08 -0.0028082313 0.13522118 115.11924 12.621292 6792.3945 1.0140579e+08 -0.0070135846 0.14119609 115.16343 12.472150 6794.8579 99832437. -0.011248923 0.14717100 115.20763 12.323008 6797.3213 1.0026475e+08 -0.015512464 0.15314591 115.25182 12.173866 6799.7848 95250868. -0.019645099 0.15912082 115.29601 12.024724 6802.2482 90950652. -0.023765503 0.16509573 115.34020 11.874307 6804.7116 85932102. -0.027834862 0.17107064 115.38439 11.719640 6807.1751 80963381. -0.031863801 0.17704554 115.42858 11.567296 6809.6385 81262239. -0.036041962 0.18302045 115.47277 11.418153 6812.1019 77957662. -0.040062930 0.18899536 115.51359 11.269011 6814.5654 77878055. -0.044195394 0.19497027 115.55225 11.119870 6817.0288 74690615. -0.048167074 0.20094518 115.60123 10.950845 6819.4922 68047224. -0.051897162 0.20692009 115.65096 10.783007 6821.9557 63564098. -0.055678415 0.21289500 115.69515 10.633865 6824.4191 58725478. -0.059329302 0.21886990 115.73934 10.484723 6826.8825 62177010. -0.063704623 0.22484481 115.78353 10.335581 6829.3459 63647861. -0.067848692 0.23081972 115.82426 10.186438 6831.8094 61551368. -0.071520649 0.23679463 115.86293 10.037295 6834.2728 60681525. -0.074923185 0.24276954 115.91212 9.8678409 6836.7362 55269400. -0.077087062 0.24874445 115.96026 9.7004326 6839.1997 49793702. -0.068467657 0.25471936 115.99892 9.5512907 6841.6631 45803766. -0.083157579 0.26069426 116.04010 9.4021487 6844.1265 43139042. -0.11324082 0.26666917 116.08429 9.2530063