# # 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 = 45.377796 km # Date (UTC) = 2011-01-12T07:12:33.364 # Date (julian) = 2455573.80038615 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.8762 1.0668988e+11 0.086543651 0.034658249 140.73711 45.322630 6510.7301 8.5775175e+10 0.099384732 0.035518843 140.85966 45.169022 6513.5840 7.0434580e+10 0.11247569 0.036379437 140.99404 44.996238 6516.4380 5.8287549e+10 0.12579412 0.037240031 141.11612 44.843375 6519.2919 4.9067270e+10 0.13949805 0.038100625 141.23371 44.697790 6522.1458 4.2686290e+10 0.15345895 0.038955433 141.34601 44.546886 6524.9997 3.7361625e+10 0.16096939 0.039782121 141.46161 44.393240 6527.8537 3.2517689e+10 0.16550499 0.041336240 141.59600 44.226857 6530.7076 2.8263186e+10 0.16897759 0.044819308 141.71699 44.069566 6533.5615 2.4602710e+10 0.17212089 0.047758214 141.82898 43.918383 6536.4154 2.1807019e+10 0.17266000 0.048162208 141.94097 43.771749 6539.2694 1.9418794e+10 0.17391644 0.049969692 142.05320 43.625451 6542.1233 1.7196049e+10 0.17365961 0.051049048 142.17480 43.452667 6544.9772 1.5218693e+10 0.17340430 0.052437089 142.28933 43.292495 6547.8311 1.3488371e+10 0.17205830 0.053603435 142.39571 43.146911 6550.6851 1.2074429e+10 0.17014415 0.055156896 142.50590 42.997533 6553.5390 1.0888838e+10 0.16707513 0.055064118 142.61789 42.846352 6556.3929 9.8324259e+09 0.16172128 0.053955358 142.72489 42.700163 6559.2469 8.9260706e+09 0.15535934 0.052359318 142.83068 42.553985 6562.1008 8.1669364e+09 0.14916644 0.050784005 142.93147 42.402802 6564.9547 7.4346331e+09 0.14425248 0.048338923 143.03891 42.244707 6567.8086 6.7349156e+09 0.14113625 0.045933466 143.16050 42.071923 6570.6626 6.0854969e+09 0.13865730 0.044643053 143.26633 41.919741 6573.5165 5.5045584e+09 0.13598205 0.043243012 143.36712 41.774159 6576.3704 5.0312675e+09 0.13300446 0.040945038 143.46791 41.623136 6579.2243 4.6167060e+09 0.12954463 0.036947167 143.56870 41.472992 6582.0783 4.2454086e+09 0.12673442 0.035272496 143.66948 41.327410 6584.9322 3.9136626e+09 0.12400504 0.034007709 143.77028 41.179581 6587.7861 3.6126386e+09 0.12128386 0.033332544 143.87109 41.028375 6590.6400 3.3473633e+09 0.11790465 0.029871476 143.96844 40.880620 6593.4940 3.1010274e+09 0.11446117 0.026642974 144.06363 40.735036 6596.3479 2.8484366e+09 0.11056052 0.025725692 144.17538 40.566930 6599.2018 2.6002915e+09 0.10783384 0.024941869 144.28525 40.401365 6602.0558 2.3672733e+09 0.10705745 0.027469054 144.38044 40.255782 6604.9097 2.1711549e+09 0.10515251 0.026611415 144.47564 40.107515 6607.7636 2.0115191e+09 0.10230164 0.024199155 144.57083 39.956332 6610.6175 1.8662368e+09 0.097461403 0.024593020 144.66602 39.809034 6613.4715 1.7386334e+09 0.094770070 0.023746571 144.76121 39.663451 6616.3254 1.6264535e+09 0.091905144 0.023333369 144.85131 39.512786 6619.1793 1.5101620e+09 0.090026233 0.024569180 144.94323 39.359753 6622.0332 1.3944034e+09 0.088048608 0.024749145 145.05203 39.193367 6624.8872 1.2762438e+09 0.085855182 0.025337206 145.15009 39.038612 6627.7411 1.1665190e+09 0.083916914 0.025603084 145.23967 38.893030 6630.5950 1.0801152e+09 0.082633045 0.025929768 145.32926 38.743118 6633.4489 9.9945423e+08 0.081331124 0.026230635 145.41885 38.591935 6636.3029 9.3170951e+08 0.079902851 0.026432134 145.50844 38.446281 6639.1568 8.6698300e+08 0.079144636 0.025572030 145.59804 38.299567 6642.0107 8.0657967e+08 0.080204318 0.025152135 145.68764 38.148361 6644.8647 7.5685163e+08 0.079418134 0.025437057 145.77724 37.999492 6647.7186 7.0921427e+08 0.078345314 0.026816117 145.86682 37.853907 6650.5725 6.6283370e+08 0.077688394 0.026386300 145.96044 37.691195 6653.4264 6.1396302e+08 0.077377591 0.027743384 146.05601 37.520236 6656.2804 5.6824135e+08 0.075550817 0.028269490 146.14560 37.374654 6659.1343 5.2891600e+08 0.073773519 0.031806586 146.23362 37.229071 6661.9882 4.9456076e+08 0.072265051 0.033038269 146.31761 37.083487 6664.8421 4.6264779e+08 0.071398351 0.029124726 146.40159 36.935131 6667.6961 4.3394583e+08 0.070933267 0.027359136 146.48558 36.783950 6670.5500 4.0807112e+08 0.070311755 0.027073828 146.56957 36.636738 6673.4039 3.8389007e+08 0.069775736 0.028063312 146.65357 36.491154 6676.2578 3.5827799e+08 0.067165278 0.031879906 146.74864 36.326365 6679.1118 3.3312360e+08 0.066098732 0.030175405 146.83828 36.165465 6681.9657 3.1195543e+08 0.067319694 0.030398230 146.91667 36.014282 6684.8196 2.9197437e+08 0.067478380 0.032695685 146.99828 35.866317 6687.6736 2.7659337e+08 0.065165753 0.033967252 147.08227 35.720732 6690.5275 2.5795575e+08 0.062873192 0.033055414 147.17068 35.558740 6693.3814 2.4043354e+08 0.061879459 0.031473242 147.25774 35.395796 6696.2353 2.2359367e+08 0.061540997 0.029773563 147.33613 35.244613 6699.0893 2.0925982e+08 0.060133997 0.031508069 147.41699 35.095887 6701.9432 1.9967453e+08 0.057934440 0.032793372 147.50099 34.950283 6704.7971 1.8938364e+08 0.058350626 0.036568979 147.58132 34.804692 6707.6510 1.7986333e+08 0.057874212 0.040093565 147.65971 34.659108 6710.5050 1.6979683e+08 0.056142672 0.040595336 147.74783 34.495454 6713.3589 1.5833432e+08 0.053217248 0.044984672 147.83228 34.335437 6716.2128 1.4623844e+08 0.050443942 0.048714827 147.90507 34.189853 6719.0667 1.3521485e+08 0.047122025 0.051306422 147.98661 34.030120 6721.9207 1.2509011e+08 0.047082405 0.050581303 148.07620 33.857336 6724.7746 1.1951196e+08 0.042533646 0.043458238 148.14970 33.710599 6727.6285 1.1486149e+08 0.040025661 0.040123006 148.22346 33.565017 6730.4825 1.0931919e+08 0.038078206 0.041040408 148.30185 33.419435 6733.3364 1.0243609e+08 0.035933823 0.045750623 148.38209 33.265829 6736.1903 95446527. 0.036774398 0.051074479 148.46528 33.099442 6739.0442 90316158. 0.037536129 0.062880687 148.53991 32.950178 6741.8982 86540702. 0.034942302 0.068320302 148.61309 32.803824 6744.7521 84437667. 0.029498402 0.078375133 148.69628 32.637439 6747.6060 79425731. 0.024317743 0.067152533 148.77454 32.480924 6750.4599 74920225. 0.021040052 0.072789501 148.84733 32.335342 6753.3139 68266528. 0.016869238 0.073993026 148.92728 32.171030 6756.1678 61253074. 0.012201827 0.074598671 149.00917 32.001671 6759.0217 57568097. 0.010358321 0.075825196 149.08196 31.856087 6761.8756 56362406. 0.011295380 0.078040571 149.15829 31.703431 6764.7296 55719432. 0.0097271352 0.079518237 149.24147 31.537047 6767.5835 54771805. -0.027240365 0.081322395 149.31223 31.386832 6770.4374 52926245. -0.0029211505 0.087940657 149.37943 31.241249 6773.2914 50460037. 0.061485276 0.094862684 149.46248 31.075043