# # 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 = 54.128788 km # Date (UTC) = 2012-01-05T10:01:09.918 # Date (julian) = 2455931.91747590 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6513.4054 8.7047510e+10 0.11672025 0.036325563 101.79172 39.062413 6515.6244 7.4938264e+10 0.12729635 0.036994711 101.87009 38.944861 6517.8435 6.4855967e+10 0.13801171 0.037663859 101.94846 38.827310 6520.0625 5.6399950e+10 0.14886402 0.038333007 102.02311 38.709759 6522.2816 4.9224436e+10 0.15906282 0.038990981 102.09713 38.592209 6524.5006 4.3463040e+10 0.16426052 0.039604803 102.16657 38.484063 6526.7197 3.9069734e+10 0.16835669 0.040422560 102.23237 38.383431 6528.9387 3.5586110e+10 0.17117690 0.042187156 102.29817 38.282799 6531.1577 3.2419093e+10 0.17360890 0.045458284 102.37196 38.165718 6533.3768 2.9320345e+10 0.17592126 0.047679714 102.44597 38.048167 6535.5958 2.6381304e+10 0.17559716 0.047965822 102.51998 37.930617 6537.8149 2.3760771e+10 0.17598893 0.049069410 102.59399 37.813068 6540.0339 2.1542885e+10 0.17599382 0.050870135 102.66489 37.701926 6542.2530 1.9755898e+10 0.17396348 0.051098285 102.73068 37.601307 6544.4720 1.8262668e+10 0.17242535 0.052027270 102.79647 37.500688 6546.6911 1.6896912e+10 0.17063816 0.053033173 102.86534 37.386619 6548.9101 1.5548968e+10 0.16834556 0.053939441 102.93500 37.269068 6551.1292 1.4207366e+10 0.16612333 0.055281093 103.00466 37.151517 6553.3482 1.2972948e+10 0.16377625 0.055160021 103.07431 37.033966 6555.5673 1.1890138e+10 0.16086292 0.054376723 103.14320 36.919812 6557.7863 1.0991296e+10 0.15829084 0.053373242 103.20899 36.819195 6560.0054 1.0224850e+10 0.15563495 0.052269473 103.27478 36.718578 6562.2244 9.5359300e+09 0.15259135 0.050666368 103.34296 36.607509 6564.4435 8.8565424e+09 0.14973053 0.048570622 103.41263 36.489940 6566.6625 8.1985310e+09 0.14759917 0.046808107 103.48229 36.372377 6568.8816 7.5820748e+09 0.14564030 0.044961306 103.55196 36.254826 6571.1006 7.0345347e+09 0.14417809 0.044475799 103.62135 36.137668 6573.3196 6.5721400e+09 0.14234587 0.043400972 103.67939 36.037050 6575.5387 6.1876221e+09 0.14010475 0.041834228 103.73744 35.936433 6577.7577 5.8408362e+09 0.13763639 0.039030144 103.80059 35.828380 6579.9768 5.4884582e+09 0.13511940 0.036533513 103.87025 35.710829 6582.1958 5.1341802e+09 0.13271163 0.035240502 103.93929 35.593897 6584.4149 4.7778947e+09 0.13048127 0.034289508 104.00460 35.480699 6586.6339 4.4607821e+09 0.12832616 0.033163101 104.06990 35.367502 6588.8530 4.1783992e+09 0.12619875 0.033095076 104.13235 35.261668 6591.0720 3.9518973e+09 0.12328480 0.029120638 104.19426 35.157181 6593.2911 3.7630373e+09 0.12057934 0.026831612 104.25707 35.050414 6595.5101 3.5753844e+09 0.11732034 0.025676472 104.32238 34.937199 6597.7292 3.3871403e+09 0.11444595 0.025492630 104.38770 34.823984 6599.9482 3.1802154e+09 0.11287261 0.024986760 104.45301 34.706586 6602.1673 2.9832381e+09 0.11174593 0.027373899 104.51831 34.589035 6604.3863 2.8084872e+09 0.11013948 0.026300654 104.57877 34.482794 6606.6054 2.6671328e+09 0.10934438 0.026416158 104.63682 34.382177 6608.8244 2.5504848e+09 0.10662945 0.023710574 104.69512 34.280139 6611.0435 2.4324085e+09 0.10382793 0.024930747 104.75607 34.162588 6613.2625 2.3045254e+09 0.10310842 0.023669901 104.81702 34.045037 6615.4815 2.1688861e+09 0.10202892 0.023266347 104.88140 33.930912 6617.7006 2.0415689e+09 0.10139677 0.023671528 104.94671 33.817714 6619.9196 1.9236704e+09 0.10102984 0.024747808 105.00656 33.708786 6622.1387 1.8320774e+09 0.099922322 0.024721079 105.06074 33.604300 6624.3577 1.7558155e+09 0.098203675 0.025053803 105.11492 33.499813 6626.5768 1.6813199e+09 0.096639962 0.025856030 105.17918 33.387418 6628.7958 1.6029110e+09 0.095310180 0.026026209 105.24450 33.274203 6631.0149 1.5169133e+09 0.093654446 0.025932277 105.30715 33.158345 6633.2339 1.4353021e+09 0.092365243 0.026193094 105.36811 33.040794 6635.4530 1.3571522e+09 0.090854194 0.026467717 105.42906 32.924605 6637.6720 1.2825413e+09 0.089591992 0.025832278 105.49001 32.811409 6639.8911 1.2172007e+09 0.089233023 0.025309588 105.55086 32.698412 6642.1101 1.1621544e+09 0.089202601 0.025156202 105.60504 32.597792 6644.3292 1.1127261e+09 0.087960539 0.025379181 105.65922 32.497173 6646.5482 1.0652014e+09 0.086659046 0.026203917 105.71632 32.389244 6648.7673 1.0186634e+09 0.085203285 0.027477887 105.77727 32.271693 6650.9863 9.7143247e+08 0.084547936 0.026481029 105.83822 32.154729 6653.2053 9.2401537e+08 0.084063157 0.027630505 105.89918 32.041533 6655.4244 8.7615533e+08 0.082702058 0.027785577 105.96013 31.928337 6657.6434 8.3155089e+08 0.081219201 0.029647485 106.01743 31.815140 6659.8625 7.8988969e+08 0.079998305 0.031654682 106.07403 31.701943 6662.0815 7.5389221e+08 0.078672861 0.032998524 106.12932 31.593451 6664.3006 7.2446875e+08 0.077617781 0.031106260 106.18351 31.488949 6666.5196 6.9553097e+08 0.077648153 0.027009852 106.23769 31.384447 6668.7387 6.6803546e+08 0.076594284 0.028124453 106.29419 31.271621 6670.9577 6.3638805e+08 0.076645700 0.026884933 106.35079 31.158425 6673.1768 6.0353252e+08 0.076310125 0.027723596 106.41026 31.045228 6675.3958 5.7312916e+08 0.074548865 0.030556500 106.47122 30.932031 6677.6149 5.4737783e+08 0.072934060 0.031484118 106.53059 30.818834 6679.8339 5.2094489e+08 0.072977365 0.029578661 106.58718 30.705637 6682.0530 4.9853873e+08 0.073753227 0.030465009 106.64378 30.592440 6684.2720 4.7522313e+08 0.073907504 0.032667895 106.70038 30.479243 6686.4911 4.5062209e+08 0.072875675 0.034046789 106.75697 30.366046 6688.7101 4.3205232e+08 0.070009363 0.033949107 106.80873 30.259554 6690.9292 4.1575343e+08 0.068719049 0.033009382 106.85904 30.155066 6693.1482 4.0367970e+08 0.067723351 0.031553247 106.91052 30.048958 6695.3672 3.9164127e+08 0.067080367 0.029792015 106.96712 29.935761 6697.5863 3.7591608e+08 0.066302473 0.030165462 107.02372 29.822564 6699.8053 3.6006662e+08 0.064720449 0.030847333 107.08032 29.709352 6702.0244 3.4557242e+08 0.062938040 0.032896204 107.13693 29.596139 6704.2434 3.2642871e+08 0.063425556 0.036297093 107.19096 29.482935 6706.4625 3.1199242e+08 0.063427090 0.039251320 107.24320 29.369739 6708.6815 2.9969833e+08 0.063039273 0.040785741 107.29673 29.256542 6710.9006 2.8974317e+08 0.061504517 0.040672772 107.35333 29.143345 6713.1196 2.8244449e+08 0.059504667 0.044119282 107.40991 29.030147 6715.3387 2.7039022e+08 0.057599149 0.047724973 107.46218 28.916950 6717.5577 2.5981139e+08 0.055583787 0.049839771 107.51442 28.803753 6719.7768 2.4731647e+08 0.054165001 0.050631854 107.56972 28.690556 6721.9958 2.3599722e+08 0.054411970 0.050603943 107.62632 28.577359 6724.2149 2.2666012e+08 0.051945732 0.048132431 107.68116 28.464162 6726.4339 2.1794194e+08 0.048597732 0.040955281 107.73340 28.350965 6728.6530 2.1247215e+08 0.048121067 0.040553552 107.78564 28.237769 6730.8720 2.0227413e+08 0.046523505 0.041574526 107.83789 28.124572 6733.0911 1.9444357e+08 0.045367077 0.044418645 107.89014 28.011375 6735.3101 1.8937116e+08 0.045829634 0.049622624 107.94238 27.898177 6737.5291 1.8377196e+08 0.047464306 0.055821169 107.99462 27.784980 6739.7482 1.8111453e+08 0.047654388 0.063742197 108.04687 27.671782 6741.9672 1.7134946e+08 0.045691290 0.068517315 108.09911 27.558585 6744.1863 1.6385390e+08 0.041070341 0.077937500 108.15136 27.445385 6746.4053 1.5692026e+08 0.038599712 0.074274818 108.20361 27.332171 6748.6244 1.5226413e+08 0.036310793 0.070301790 108.25587 27.218957 6750.8434 1.5123310e+08 0.033546451 0.073444319 108.31499 27.090865 6753.0625 1.4625402e+08 0.030887698 0.073179473 108.37469 26.961496 6755.2815 1.4101398e+08 0.029056693 0.074481916 108.42760 26.846862 6757.5006 1.3548084e+08 0.027348291 0.075220959 108.47985 26.733665 6759.7196 1.3210881e+08 0.028375683 0.075993610 108.53209 26.620467 6761.9387 1.2799913e+08 0.031989784 0.078045777 108.58434 26.507270 6764.1577 1.2147090e+08 0.035456437 0.079490841 108.63520 26.395454 6766.3768 1.1565984e+08 0.036843835 0.080565984 108.68309 26.286611 6768.5958 1.1360553e+08 0.032963454 0.082999878 108.73123 26.177347 6770.8149 1.1258810e+08 0.028763676 0.088856079 108.79094 26.047976 6773.0339 1.0954347e+08 0.024880897 0.094238245 108.85051 25.918791 6775.2529 1.0060274e+08 0.021109385 0.099620410 108.89841 25.805583 6777.4720 91542697. 0.017371119 0.10500258 108.94630 25.692386 6779.6910 84453962. 0.013623380 0.11038474 108.99730 25.579188 6781.9101 82205173. 0.0097640979 0.11576691 109.04954 25.465991 6784.1291 81235288. 0.0058763955 0.12114907 109.10283 25.348124 6786.3482 79010810. 0.0020279333 0.12653124 109.15756 25.223729 6788.5672 76111662. -0.0017923522 0.13191340 109.20951 25.103895 6790.7863 71629406. -0.0055484666 0.13729557 109.25740 24.990698 6793.0053 67713061. -0.0092921928 0.14267773 109.30529 24.877501 6795.2244 66414722. -0.013114658 0.14805990 109.35318 24.764304 6797.4434 66002237. -0.016948781 0.15344206 109.40107 24.651107 6799.6625 64839593. -0.020709820 0.15882423 109.45453 24.528800 6801.8815 62209983. -0.024332370 0.16420639 109.50926 24.404406 6804.1006 55547791. -0.027579108 0.16958856 109.55849 24.289012 6806.3196 50915934. -0.030553611 0.17497072 109.60638 24.175815 6808.5387 51315208. -0.033705696 0.18035289 109.65774 24.054419 6810.7577 50543217. -0.031993211 0.18573505 109.71248 23.925048 6812.9768 51621657. -0.041224029 0.19111722 109.76721 23.798152 6815.1958 49810774. -0.055349054 0.19649938 109.82195 23.673757