# # 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 = 51.144448 km # Date (UTC) = 2015-12-24T10:40:51.637 # Date (julian) = 2457380.94504210 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.3253 7.3782570e+10 0.020086070 0.030270477 96.362267 28.849906 6495.4547 6.4104134e+10 0.026473484 0.030912580 96.410541 28.749641 6497.5840 5.6727923e+10 0.032850220 0.031554683 96.461808 28.649366 6499.7134 5.0916972e+10 0.039408640 0.032196786 96.513804 28.549087 6501.8428 4.6270059e+10 0.046350549 0.032838889 96.565799 28.448811 6503.9721 4.2459458e+10 0.053852076 0.033480992 96.617788 28.348546 6506.1015 3.9022868e+10 0.061923228 0.034123095 96.669777 28.248282 6508.2308 3.6079805e+10 0.070782030 0.034765198 96.720212 28.146463 6510.3602 3.3461379e+10 0.080488862 0.035407301 96.768489 28.042484 6512.4896 3.1025467e+10 0.091037994 0.036049404 96.816766 27.938506 6514.6189 2.8822707e+10 0.10251064 0.036691507 96.865042 27.837223 6516.7483 2.6870700e+10 0.11492118 0.037333610 96.913317 27.736958 6518.8776 2.5106485e+10 0.12819843 0.037975713 96.961714 27.636692 6521.0070 2.3458379e+10 0.14220668 0.038617816 97.013710 27.536415 6523.1364 2.1875501e+10 0.15357620 0.039212911 97.065705 27.436137 6525.2657 2.0310351e+10 0.16253326 0.039751888 97.116435 27.335864 6527.3951 1.8905177e+10 0.17014385 0.041003308 97.164713 27.235599 6529.5244 1.7576114e+10 0.17607615 0.043071182 97.212990 27.135334 6531.6538 1.6319571e+10 0.18030198 0.046180303 97.261266 27.035069 6533.7832 1.5119538e+10 0.18194828 0.047852410 97.309540 26.934805 6535.9125 1.3992834e+10 0.18062462 0.047828446 97.357815 26.834540 6538.0419 1.2958777e+10 0.18044231 0.049177078 97.406089 26.734275 6540.1712 1.2024490e+10 0.17925102 0.050935004 97.454364 26.634010 6542.3006 1.1179849e+10 0.17647045 0.051116366 97.502641 26.533741 6544.4300 1.0401339e+10 0.17423019 0.051993148 97.550925 26.433464 6546.5593 9.7016892e+09 0.17195096 0.052924765 97.599209 26.333187 6548.6887 9.0219489e+09 0.16983525 0.053873313 97.645373 26.232916 6550.8181 8.3881597e+09 0.16795775 0.055190193 97.689933 26.132651 6552.9474 7.8217865e+09 0.16637576 0.055348304 97.734493 26.032386 6555.0768 7.2931276e+09 0.16430680 0.054788857 97.782312 25.932121 6557.2061 6.8124492e+09 0.16178741 0.053736902 97.830589 25.831856 6559.3355 6.3497599e+09 0.15885950 0.052349314 97.878866 25.731592 6561.4649 5.9116571e+09 0.15588923 0.051143611 97.927140 25.631327 6563.5942 5.5362911e+09 0.15285814 0.049240998 97.975415 25.531062 6565.7236 5.2031800e+09 0.15005879 0.047496768 98.021871 25.430790 6567.8529 4.9012927e+09 0.14780205 0.045896009 98.066440 25.330512 6569.9823 4.6138439e+09 0.14563213 0.044916357 98.111009 25.230234 6572.1117 4.3421634e+09 0.14304566 0.044166213 98.155571 25.129967 6574.2410 4.0955806e+09 0.13976730 0.042739246 98.200132 25.029703 6576.3704 3.8681431e+09 0.13651627 0.040945081 98.245083 24.929830 6578.4997 3.6660567e+09 0.13298821 0.037860470 98.293361 24.833278 6580.6291 3.4689436e+09 0.12997372 0.035939375 98.341638 24.736727 6582.7585 3.2790094e+09 0.12784695 0.035087397 98.388383 24.638644 6584.8878 3.0966651e+09 0.12602342 0.034031882 98.432943 24.538379 6587.0172 2.9199421e+09 0.12423795 0.033162176 98.477503 24.438114 6589.1465 2.7651627e+09 0.12240941 0.032755254 98.522070 24.337839 6591.2759 2.6183204e+09 0.12013296 0.028890588 98.566639 24.237561 6593.4053 2.4849961e+09 0.11809272 0.026725450 98.611208 24.137283 6595.5346 2.3550239e+09 0.11560748 0.025679013 98.655771 24.037019 6597.6640 2.2292443e+09 0.11353635 0.025513200 98.700334 23.936755 6599.7933 2.1191728e+09 0.11247241 0.024977446 98.744896 23.837732 6601.9227 2.0138666e+09 0.11199809 0.027480231 98.789456 23.741181 6604.0521 1.9120590e+09 0.11044569 0.026102190 98.834017 23.644629 6606.1814 1.8163651e+09 0.10995909 0.027177949 98.878579 23.545696 6608.3108 1.7317172e+09 0.10738475 0.023724154 98.923142 23.445431 6610.4401 1.6508573e+09 0.10423984 0.024423528 98.967705 23.345166 6612.5695 1.5698114e+09 0.10236523 0.023895239 99.017550 23.236974 6614.6989 1.4770147e+09 0.10117939 0.023459001 99.067681 23.128353 6616.8282 1.3855535e+09 0.099680581 0.023412289 99.112664 23.024360 6618.9576 1.3091195e+09 0.098799957 0.024493888 99.153519 22.924082 6621.0869 1.2387862e+09 0.097802274 0.025060627 99.194373 22.823804 6623.2163 1.1809349e+09 0.095955386 0.024571965 99.238425 22.723538 6625.3457 1.1316636e+09 0.094334448 0.025810091 99.282989 22.623273 6627.4750 1.0877412e+09 0.092272402 0.025500307 99.327552 22.523638 6629.6044 1.0458139e+09 0.091168627 0.025999829 99.372115 22.427087 6631.7338 9.9658226e+08 0.089755354 0.026005300 99.416678 22.330536 6633.8631 9.5119348e+08 0.088617425 0.026302943 99.459471 22.232215 6635.9925 9.1512912e+08 0.087344129 0.026548624 99.500320 22.131950 6638.1218 8.8082563e+08 0.086535972 0.025666334 99.541168 22.031685 6640.2512 8.4364027e+08 0.086707838 0.025239918 99.589298 21.924858 6642.3806 8.0150983e+08 0.086848459 0.025167269 99.639437 21.816219 6644.5099 7.5304930e+08 0.086114216 0.025398717 99.685948 21.712300 6646.6393 7.1776063e+08 0.085171665 0.026251056 99.726797 21.615749 6648.7686 6.8219958e+08 0.084166477 0.027478811 99.767646 21.519197 6650.8980 6.5527149e+08 0.083783342 0.026460814 99.808495 21.420056 6653.0274 6.3234881e+08 0.083420528 0.027539628 99.849343 21.319791 6655.1567 5.9961409e+08 0.082240573 0.027674972 99.890192 21.219557 6657.2861 5.7658554e+08 0.080428070 0.029232951 99.931041 21.122992 6659.4154 5.4851203e+08 0.079005436 0.031747938 99.971890 21.026441 6661.5448 5.3011063e+08 0.077570376 0.032812427 100.01563 20.926126 6663.6742 5.1369113e+08 0.076176618 0.032296387 100.06577 20.817504 6665.8035 4.9352853e+08 0.076002357 0.027230537 100.11590 20.708882 6667.9329 4.8164124e+08 0.075163185 0.027446120 100.15752 20.607922 6670.0622 4.6556601e+08 0.074426319 0.027299798 100.19837 20.507644 6672.1916 4.4795318e+08 0.074035059 0.026990654 100.23922 20.408207 6674.3210 4.2832844e+08 0.073038247 0.029225542 100.28007 20.311656 6676.4503 4.0897027e+08 0.070892836 0.032003953 100.32091 20.215105 6678.5797 3.8930915e+08 0.070222725 0.030548898 100.36448 20.112122 6680.7090 3.7344297e+08 0.071062567 0.029594528 100.41044 20.003500 6682.8384 3.5413578e+08 0.071860724 0.031065115 100.45517 19.896558 6684.9678 3.3415451e+08 0.071908312 0.032703202 100.49230 19.800007 6687.0971 3.2295278e+08 0.070237812 0.034288733 100.52944 19.703455 6689.2265 3.0542977e+08 0.067710550 0.033812152 100.57052 19.599651 6691.3558 2.9332533e+08 0.066829966 0.032917307 100.61647 19.486851 6693.4852 2.7829577e+08 0.066004354 0.031437633 100.66216 19.374907 6695.6146 2.6438689e+08 0.065705156 0.029746585 100.70301 19.278344 6697.7439 2.5501323e+08 0.064969196 0.030185410 100.74386 19.181781 6699.8733 2.4733909e+08 0.063406738 0.030784639 100.78655 19.080874 6702.0026 2.3714464e+08 0.061641904 0.032878844 100.83251 18.972252 6704.1320 2.3052494e+08 0.061912792 0.036242376 100.87846 18.863630 6706.2614 2.2265265e+08 0.061763091 0.038901295 100.91589 18.766675 6708.3907 2.1553255e+08 0.061236215 0.040469068 100.95303 18.670124 6710.5201 2.0593790e+08 0.059761627 0.040598296 100.99258 18.570269 6712.6494 1.9160157e+08 0.057711688 0.043035770 101.03853 18.461646 6714.7788 1.8191640e+08 0.055641254 0.047361959 101.08449 18.353024 6716.9082 1.7519163e+08 0.053565914 0.049739012 101.12268 18.255025 6719.0375 1.6961186e+08 0.051163617 0.051334181 101.15982 18.158474 6721.1669 1.6347858e+08 0.051585557 0.050354184 101.19861 18.059660 6723.2963 1.6151327e+08 0.050303187 0.049534169 101.24457 17.951022 6725.4256 1.5391070e+08 0.046251830 0.041310160 101.29053 17.842384 6727.5550 1.5223016e+08 0.045127969 0.040221003 101.33317 17.733758 6729.6843 1.4673641e+08 0.044272683 0.040589302 101.37495 17.625137 6731.8137 1.4005405e+08 0.042609984 0.043369426 101.41635 17.521347 6733.9431 1.3688419e+08 0.041601930 0.049044426 101.45720 17.424795 6736.0724 1.3033102e+08 0.043323056 0.050628775 101.49805 17.328243 6738.2018 1.2798934e+08 0.044556588 0.058431958 101.53956 17.226108 6740.3311 1.2473367e+08 0.044172842 0.064616051 101.58134 17.121664 6742.4605 1.2070197e+08 0.041509314 0.069732837 101.62311 17.015909 6744.5899 1.1514674e+08 0.037575088 0.078249651 101.66489 16.907288 6746.7192 1.1032023e+08 0.033967815 0.070625571 101.70667 16.798667 6748.8486 1.0484595e+08 0.033019853 0.071481297 101.74844 16.690045 6750.9779 99384426. 0.030236349 0.073674000 101.79022 16.581423 6753.1073 96247234. 0.027515075 0.073324529 101.83420 16.472801 6755.2367 90740048. 0.025651071 0.074501585 101.88015 16.364178 6757.3660 86480211. 0.023656264 0.075629283 101.92555 16.255556 6759.4954 78309879. 0.024552728 0.075939498 101.96733 16.146934 6761.6247 72274447. 0.026917607 0.078019841 102.00911 16.038312 6763.7541 70523528. 0.030838538 0.078734396 102.05089 15.932767 6765.8835 68998434. 0.032672023 0.079692472 102.09268 15.828308 6768.0128 68333884. 0.029829140 0.080902164 102.13446 15.722408 6770.1422 65618592. 0.025007111 0.087224557 102.17624 15.613786 6772.2715 63429808. 0.020669431 0.092389192 102.21802 15.505164 6774.4009 59836422. 0.015839810 0.097553827 102.25979 15.396542 6776.5303 55915055. 0.0091897158 0.10271846 102.30157 15.287920 6778.6596 51741719. -0.011033654 0.10788310 102.34335 15.181633 6780.7890 49581262. -0.0023928330 0.11304773 102.38512 15.077188 6782.9183 50587254. 0.022612985 0.11821237 102.42621 14.972053