# # 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 = 48.650486 km # Date (UTC) = 2016-01-15T09:53:52.679 # Date (julian) = 2457402.91241527 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.8387 7.6426129e+10 0.034054748 0.031631481 106.69176 38.181927 6500.0558 6.9382251e+10 0.042604068 0.032300039 106.77236 38.050958 6502.2729 6.3010212e+10 0.051475634 0.032968597 106.85687 37.916730 6504.4900 5.7093687e+10 0.060692239 0.033637155 106.93055 37.791530 6506.7071 5.2184643e+10 0.070441950 0.034305712 107.00015 37.669732 6508.9242 4.7899730e+10 0.080735639 0.034974270 107.07188 37.540496 6511.1413 4.3596400e+10 0.091410457 0.035642828 107.14645 37.401297 6513.3584 3.9596938e+10 0.10257183 0.036311386 107.21895 37.269337 6515.5754 3.6340436e+10 0.11443990 0.036979943 107.28855 37.147540 6517.7925 3.3650607e+10 0.12698920 0.037648501 107.35931 37.023706 6520.0096 3.0980963e+10 0.13992289 0.038317059 107.43885 36.884506 6522.2267 2.8253903e+10 0.15253150 0.038976619 107.51689 36.747601 6524.4438 2.5767542e+10 0.16012288 0.039584624 107.58214 36.630156 6526.6609 2.3672605e+10 0.16673553 0.040360959 107.64739 36.512710 6528.8780 2.1799340e+10 0.17209599 0.042138991 107.72015 36.377716 6531.0951 1.9926810e+10 0.17649329 0.045367065 107.79472 36.238515 6533.3122 1.8146030e+10 0.18052505 0.047652249 107.86188 36.113153 6535.5293 1.6591642e+10 0.18097958 0.047994707 107.92713 35.991357 6537.7463 1.5307282e+10 0.18098429 0.049037096 107.99238 35.869560 6539.9634 1.4219621e+10 0.17999920 0.050809845 108.05763 35.747764 6542.1805 1.3198136e+10 0.17672763 0.051070777 108.12472 35.623514 6544.3976 1.2178107e+10 0.17411398 0.051966904 108.19929 35.489286 6546.6147 1.1156373e+10 0.17163986 0.052970333 108.27213 35.357368 6548.8318 1.0241026e+10 0.16913489 0.053916050 108.33738 35.235570 6551.0489 9.4665007e+09 0.16694795 0.055252912 108.40263 35.113772 6553.2660 8.7541779e+09 0.16509742 0.055201362 108.47173 34.976540 6555.4831 8.0549994e+09 0.16265408 0.054447469 108.54133 34.837341 6557.7002 7.3921945e+09 0.16028621 0.053427244 108.60331 34.717184 6559.9173 6.8332319e+09 0.15750972 0.052283649 108.66421 34.599737 6562.1343 6.3879322e+09 0.15421844 0.050752071 108.72762 34.479772 6564.3514 6.0111640e+09 0.15080872 0.048612328 108.79288 34.357957 6566.5685 5.6382611e+09 0.14809050 0.046861272 108.85934 34.231310 6568.7856 5.2650011e+09 0.14551913 0.045049496 108.92895 34.092112 6571.0027 4.8869013e+09 0.14333180 0.044502537 108.99623 33.958709 6573.2198 4.5362770e+09 0.14088732 0.043481102 109.05713 33.841261 6575.4369 4.2507731e+09 0.13788103 0.041936375 109.11803 33.723814 6577.6540 3.9975812e+09 0.13453528 0.039193136 109.17892 33.602157 6579.8711 3.7766047e+09 0.13092314 0.036591634 109.23982 33.480359 6582.0882 3.5456159e+09 0.12747193 0.035269805 109.30321 33.350250 6584.3052 3.3147319e+09 0.12401040 0.034349232 109.36784 33.216022 6586.5223 3.0980808e+09 0.12093361 0.033164544 109.43002 33.089962 6588.7394 2.8958289e+09 0.11844788 0.033132997 109.49092 32.968166 6590.9565 2.7327604e+09 0.11569010 0.029282794 109.55181 32.847927 6593.1736 2.5787639e+09 0.11368467 0.026940818 109.61271 32.730480 6595.3907 2.4390253e+09 0.11118592 0.025664088 109.67335 32.612775 6597.6078 2.3204975e+09 0.10890355 0.025530932 109.72990 32.490978 6599.8249 2.2060046e+09 0.10784547 0.024979342 109.78645 32.369182 6602.0420 2.0891238e+09 0.10739589 0.027480818 109.84915 32.237932 6604.2591 1.9603346e+09 0.10609516 0.026225098 109.91377 32.103704 6606.4762 1.8361019e+09 0.10557376 0.026648337 109.97235 31.978786 6608.6932 1.7276959e+09 0.10285093 0.023714042 110.02890 31.856990 6610.9103 1.6444717e+09 0.099701222 0.024872779 110.08544 31.737151 6613.1274 1.5770495e+09 0.098445697 0.023620342 110.14200 31.619703 6615.3445 1.5009774e+09 0.096976825 0.023262131 110.19977 31.498969 6617.5616 1.4187354e+09 0.095846369 0.023625447 110.26439 31.359769 6619.7787 1.3301176e+09 0.095176550 0.024713800 110.32789 31.223606 6621.9958 1.2495811e+09 0.093947813 0.024759390 110.38444 31.106159 6624.2129 1.1861565e+09 0.091938100 0.024976260 110.44099 30.988711 6626.4300 1.1304482e+09 0.090290984 0.026043090 110.49755 30.871250 6628.6471 1.0770494e+09 0.088607802 0.025965805 110.55410 30.753786 6630.8641 1.0252148e+09 0.086703925 0.025930431 110.61234 30.624552 6633.0812 9.7195410e+08 0.085116185 0.026166436 110.67198 30.485376 6635.2983 9.1925140e+08 0.083452329 0.026444526 110.72999 30.357713 6637.5154 8.7213092e+08 0.082121137 0.025908977 110.78655 30.240248 6639.7325 8.3194959e+08 0.081852783 0.025366261 110.84210 30.122787 6641.9496 7.9841929e+08 0.082375695 0.025151525 110.89429 30.005339 6644.1667 7.6046022e+08 0.081644677 0.025361621 110.94649 29.887892 6646.3838 7.2420828e+08 0.080891565 0.026118803 111.01028 29.750155 6648.6009 6.8669430e+08 0.080025960 0.027366507 111.07492 29.610956 6650.8180 6.4980171e+08 0.079767507 0.026442491 111.12809 29.491797 6653.0350 6.1579997e+08 0.079614931 0.027543556 111.18029 29.374350 6655.2521 5.7986177e+08 0.078488368 0.027714400 111.23249 29.256903 6657.4692 5.4938768e+08 0.076892252 0.029445402 111.28469 29.139455 6659.6863 5.2533931e+08 0.075544281 0.031691431 111.33930 29.016580 6661.9034 4.9716126e+08 0.074232515 0.032995076 111.39896 28.882353 6664.1205 4.7422178e+08 0.073022995 0.031765184 111.45629 28.752004 6666.3376 4.5121430e+08 0.073151212 0.026974379 111.50848 28.630206 6668.5547 4.2929766e+08 0.072208866 0.027961627 111.56078 28.508243 6670.7718 4.0911133e+08 0.072094449 0.026971083 111.62044 28.374017 6672.9889 3.8411977e+08 0.071861085 0.027452761 111.68003 28.239884 6675.2060 3.6332546e+08 0.070232048 0.030192831 111.72792 28.122368 6677.4230 3.4536843e+08 0.068401150 0.031756819 111.77577 28.004921 6679.6401 3.3042402e+08 0.068258560 0.029738794 111.82668 27.887475 6681.8572 3.1879423e+08 0.069056704 0.030315007 111.87888 27.770028 6684.0743 3.0347644e+08 0.069299363 0.032657863 111.93409 27.645806 6686.2914 2.8959577e+08 0.068544182 0.033930627 111.99374 27.511577 6688.5085 2.8083254e+08 0.065897546 0.033902568 112.04877 27.383931 6690.7256 2.6787337e+08 0.064673545 0.033032711 112.09662 27.266484 6692.9427 2.5790181e+08 0.063973244 0.031670657 112.14510 27.147470 6695.1598 2.4314282e+08 0.063591073 0.029830127 112.19979 27.013242 6697.3769 2.3035397e+08 0.063136636 0.030138957 112.25427 26.880387 6699.5939 2.2074513e+08 0.061814201 0.031042390 112.30647 26.762941 6701.8110 2.1075680e+08 0.060139492 0.032599467 112.35867 26.645495 6704.0281 2.0171098e+08 0.060475428 0.036191365 112.41282 26.514909 6706.2452 1.9310467e+08 0.060513013 0.038873186 112.46750 26.380681 6708.4623 1.8662448e+08 0.060092974 0.040547015 112.51691 26.259398 6710.6794 1.7886989e+08 0.058614963 0.040629479 112.56476 26.141950 6712.8965 1.7038221e+08 0.056602684 0.043494438 112.61584 26.016573 6715.1136 1.6141382e+08 0.054598298 0.047494754 112.67052 25.882345 6717.3307 1.5246073e+08 0.052522788 0.049853815 112.72206 25.755846 6719.5478 1.4724385e+08 0.050708783 0.050849427 112.76992 25.638382 6721.7649 1.4142953e+08 0.050931202 0.050534352 112.81888 25.518194 6723.9819 1.3781875e+08 0.048938357 0.049916589 112.87357 25.383966 6726.1990 1.2985352e+08 0.045024411 0.040953163 112.92722 25.252271 6728.4161 1.2331558e+08 0.044373388 0.040217880 112.97507 25.134824 6730.6332 1.2107497e+08 0.042731809 0.041247113 113.02292 25.017377 6732.8503 1.1341646e+08 0.041386370 0.043896747 113.07659 24.885631 6735.0674 1.0935115e+08 0.041463309 0.049364974 113.13128 24.751402 6737.2845 1.0036635e+08 0.043144215 0.055041792 113.18179 24.621352 6739.5016 94953785. 0.043562751 0.063440382 113.23150 24.492096 6741.7187 93930609. 0.041818222 0.067808362 113.27967 24.372630 6743.9358 93137185. 0.037161124 0.077360009 113.32752 24.255184 6746.1528 91826000. 0.035515405 0.077210293 113.37899 24.128841 6748.3699 89452573. 0.032156337 0.068963138 113.43368 23.994613 6750.5870 84558289. 0.029440463 0.073006500 113.48578 23.860385 6752.8041 80203663. 0.026724593 0.073203965 113.53550 23.726157 6755.0212 77452075. 0.025041614 0.074596048 113.58206 23.602644 6757.2383 73765083. 0.022662930 0.076016891 113.62556 23.489547 6759.4554 72518267. 0.023713983 0.075929847 113.67139 23.372049 6761.6725 69871640. 0.026299391 0.078023785 113.72607 23.237821 6763.8896 66033419. 0.030175807 0.079146960 113.77978 23.103593 6766.1067 61417418. 0.031742152 0.079955009 113.82949 22.969365 6768.3237 55431976. 0.027911800 0.082020947 113.87921 22.836059 6770.5408 49981566. 0.022913709 0.088191472 113.92892 22.706802 6772.7579 49751787. 0.018415102 0.093568890 113.97864 22.576682 6774.9750 49604841. 0.013485077 0.098946309 114.02835 22.442454 6777.1921 50109538. 0.0070745017 0.10432373 114.07706 22.311653 6779.4092 49355947. -0.011911493 0.10970115 114.12055 22.198556 6781.6263 47387331. -0.0037413536 0.11507857 114.16405 22.085458 6783.8434 46992522. 0.020008180 0.12045599 114.21721 21.954118