# # 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 = 51.317354 km # Date (UTC) = 2013-12-16T09:50:28.228 # Date (julian) = 2456642.91004894 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.3483 5.2206911e+10 0.050242458 0.032689785 -28.887215 49.553448 6503.8679 4.8884975e+10 0.059203927 0.033449552 -29.001473 49.443583 6506.3874 4.5455956e+10 0.068383675 0.034209318 -29.115732 49.333718 6508.9070 4.2357207e+10 0.077930928 0.034969084 -29.229978 49.227713 6511.4265 3.9596234e+10 0.087958212 0.035728851 -29.344222 49.122258 6513.9461 3.7188886e+10 0.098574881 0.036488617 -29.458466 49.016802 6516.4657 3.5013174e+10 0.10982160 0.037248383 -29.572710 48.911345 6518.9852 3.2864766e+10 0.12166577 0.038008150 -29.686954 48.805888 6521.5048 3.0824493e+10 0.13417944 0.038767916 -29.801198 48.700432 6524.0243 2.8819879e+10 0.14140981 0.039435604 -29.915233 48.594974 6526.5439 2.6887692e+10 0.14723145 0.040238292 -30.025098 48.489506 6529.0634 2.5067212e+10 0.15192898 0.042336853 -30.134962 48.384037 6531.5830 2.3321592e+10 0.15666828 0.046077254 -30.244815 48.275185 6534.1026 2.1727603e+10 0.15993747 0.047973249 -30.354666 48.165335 6536.6221 2.0084134e+10 0.16193854 0.048347134 -30.468878 48.051122 6539.1417 1.8403556e+10 0.16395165 0.049815135 -30.587517 47.932482 6541.6612 1.6754468e+10 0.16499382 0.051112093 -30.699917 47.820082 6544.1808 1.5273600e+10 0.16521374 0.051791019 -30.805373 47.714627 6546.7004 1.4024377e+10 0.16512286 0.053040812 -30.910831 47.608301 6549.2199 1.2930314e+10 0.16390352 0.054190398 -31.016301 47.498437 6551.7395 1.1938781e+10 0.16269427 0.055495320 -31.121771 47.388572 6554.2590 1.1022543e+10 0.16039055 0.054837816 -31.227229 47.282772 6556.7786 1.0182431e+10 0.15840041 0.053898657 -31.332685 47.177315 6559.2982 9.4045869e+09 0.15586358 0.052353528 -31.438141 47.071859 6561.8177 8.6886988e+09 0.15342437 0.050969728 -31.543597 46.966404 6564.3373 8.0363470e+09 0.15085886 0.048618744 -31.647426 46.859322 6566.8568 7.4531808e+09 0.14923377 0.046698175 -31.748488 46.749472 6569.3764 6.9266169e+09 0.14775159 0.044876922 -31.849551 46.640036 6571.8960 6.4519981e+09 0.14669988 0.044258573 -31.950626 46.534565 6574.4155 6.0302519e+09 0.14475032 0.042655436 -32.051701 46.429094 6576.9351 5.6372667e+09 0.14283590 0.040295105 -32.149167 46.320037 6579.4546 5.2722436e+09 0.14022917 0.036820567 -32.245836 46.210187 6581.9742 4.9314803e+09 0.13809322 0.035301611 -32.344890 46.102723 6584.4937 4.6275224e+09 0.13584438 0.034246547 -32.445952 45.997267 6587.0133 4.3379952e+09 0.13365595 0.033161318 -32.549070 45.888287 6589.5329 4.0339165e+09 0.13132549 0.031988816 -32.657824 45.769648 6592.0524 3.7367726e+09 0.12834934 0.028022604 -32.763624 45.653156 6594.5720 3.4544354e+09 0.12529342 0.025858531 -32.860291 45.543306 6597.0915 3.2212588e+09 0.12174836 0.025693839 -32.956958 45.433457 6599.6111 3.0251987e+09 0.11926186 0.024966485 -33.049381 45.327848 6602.1307 2.8451086e+09 0.11782436 0.027405130 -33.141667 45.222377 6604.6502 2.6761388e+09 0.11588415 0.026457357 -33.233946 45.113872 6607.1698 2.5169805e+09 0.11438566 0.025371740 -33.326221 45.004022 6609.6893 2.3690458e+09 0.11119342 0.023910698 -33.420328 44.896005 6612.2089 2.2415081e+09 0.10883763 0.024164669 -33.516995 44.790550 6614.7285 2.1180648e+09 0.10790001 0.023438613 -33.613973 44.682533 6617.2480 1.9835388e+09 0.10671942 0.023521479 -33.712840 44.558950 6619.7676 1.8522557e+09 0.10630029 0.024711118 -33.810927 44.437511 6622.2871 1.7260292e+09 0.10515628 0.024681566 -33.903213 44.332041 6624.8067 1.6196423e+09 0.10351339 0.025294130 -33.995499 44.226570 6627.3263 1.5275436e+09 0.10139269 0.025442838 -34.087776 44.117408 6629.8458 1.4436951e+09 0.099991975 0.025956179 -34.180051 44.007558 6632.3654 1.3662566e+09 0.097931124 0.026076156 -34.269833 43.900200 6634.8849 1.3011803e+09 0.096062199 0.026391394 -34.357712 43.794746 6637.4045 1.2366245e+09 0.094113496 0.025963304 -34.448790 43.684011 6639.9241 1.1667132e+09 0.093435379 0.025297798 -34.547658 43.560427 6642.4436 1.0940935e+09 0.093144071 0.025169850 -34.643577 43.441707 6644.9632 1.0243836e+09 0.091734834 0.025447704 -34.731457 43.336251 6647.4827 9.6986501e+08 0.089930782 0.026691938 -34.819338 43.230794 6650.0023 9.2560948e+08 0.088449760 0.026255761 -34.902867 43.120963 6652.5218 8.8585496e+08 0.087202220 0.027394102 -34.986363 43.011098 6655.0414 8.3943195e+08 0.085365861 0.027627325 -35.077336 42.894943 6657.5610 7.9152093e+08 0.082828298 0.029551812 -35.171260 42.776305 6660.0805 7.4350488e+08 0.080991171 0.031699189 -35.260990 42.663765 6662.6001 7.0362716e+08 0.079357869 0.032707590 -35.348871 42.553915 6665.1196 6.6960328e+08 0.078734745 0.028351093 -35.434913 42.445902 6667.6392 6.4106811e+08 0.078225585 0.027338247 -35.518399 42.340445 6670.1588 6.1467051e+08 0.077588972 0.027255082 -35.602666 42.233112 6672.6783 5.8099021e+08 0.077360836 0.027272765 -35.691646 42.114471 6675.1979 5.5272079e+08 0.075681516 0.030177367 -35.779971 41.996879 6677.7174 5.2194532e+08 0.073854489 0.031338306 -35.863468 41.887014 6680.2370 4.9647847e+08 0.074078956 0.029492594 -35.946964 41.777150 6682.7566 4.7150814e+08 0.074868781 0.031002580 -36.035088 41.659881 6685.2761 4.4507623e+08 0.074662578 0.032996483 -36.124068 41.541242 6687.7957 4.2369421e+08 0.072234949 0.033899145 -36.208539 41.429818 6690.3152 4.0413261e+08 0.069898415 0.033079738 -36.292026 41.319968 6692.8348 3.8563806e+08 0.068720845 0.031795935 -36.378506 41.205326 6695.3544 3.6271065e+08 0.067999036 0.029794384 -36.467485 41.086685 6697.8739 3.3971828e+08 0.067136525 0.030201860 -36.549006 40.972635 6700.3935 3.1896077e+08 0.065113871 0.030959566 -36.623705 40.862785 6702.9130 3.0664692e+08 0.063996813 0.033605788 -36.701922 40.750770 6705.4326 2.9624228e+08 0.063861821 0.037437660 -36.790902 40.632132 6707.9521 2.8323709e+08 0.063264639 0.040050432 -36.877675 40.515453 6710.4717 2.7165829e+08 0.061468784 0.040588825 -36.956778 40.405588 6712.9913 2.5886512e+08 0.058916644 0.043670407 -37.035881 40.295723 6715.5108 2.4554760e+08 0.056459038 0.047901045 -37.119659 40.177540 6718.0304 2.3175431e+08 0.054027495 0.049859734 -37.203695 40.058899 6720.5499 2.1535237e+08 0.053191322 0.050356046 -37.287732 39.935687 6723.0695 2.0205123e+08 0.052350042 0.049407706 -37.371770 39.812104 6725.5891 1.9124533e+08 0.047871526 0.041208062 -37.447382 39.704873 6728.1086 1.8289767e+08 0.046837469 0.039782050 -37.522079 39.599418 6730.6282 1.7739780e+08 0.045104714 0.041240213 -37.602625 39.482611 6733.1477 1.6973052e+08 0.043601260 0.044726420 -37.686663 39.359027 6735.6673 1.6386021e+08 0.044318181 0.050001818 -37.767718 39.238426 6738.1869 1.5488740e+08 0.045793395 0.058349821 -37.846811 39.119785 6740.7064 1.4868084e+08 0.044996908 0.065257152 -37.928780 39.001135 6743.2260 1.4329027e+08 0.040815675 0.072571859 -38.012828 38.882479 6745.7455 1.3527117e+08 0.037953919 0.078880303 -38.089211 38.768734 6748.2651 1.3073934e+08 0.033713839 0.068411563 -38.159514 38.658884 6750.7847 1.2281020e+08 0.030802015 0.073343956 -38.232296 38.546556 6753.3042 1.1824457e+08 0.027762603 0.073961772 -38.311389 38.427916 6755.8238 1.1335862e+08 0.025141501 0.074244174 -38.390482 38.307995 6758.3433 1.0982941e+08 0.024393107 0.074431338 -38.469576 38.184411 6760.8629 1.0556962e+08 0.024862907 0.077706760 -38.548669 38.061994 6763.3824 1.0073620e+08 0.030491113 0.077602517 -38.627762 37.943354 6765.9020 94212568. 0.032795549 0.079695858 -38.706856 37.824713 6768.4216 89980862. 0.028977024 0.082372919 -38.785949 37.706075 6770.9411 86987986. 0.024028284 0.089162342 -38.865042 37.586496 6773.4607 82286420. 0.019476652 0.095273381 -38.944135 37.462912 6775.9802 77497313. 0.014944417 0.10138442 -39.022403 37.340153 6778.4998 72151610. 0.010379488 0.10749546 -39.096565 37.221495 6781.0194 70359013. 0.0059058069 0.11360650 -39.171440 37.102124 6783.5389 70046440. 0.0014452205 0.11971754 -39.250533 36.978540 6786.0585 67344151. -0.0031736772 0.12582857 -39.330315 36.853495 6788.5780 63534263. -0.0079685830 0.13193961 -39.415060 36.717905 6791.0976 61337819. -0.012876171 0.13805065 -39.496079 36.588276 6793.6172 59930156. -0.018047778 0.14416169 -39.570228 36.469635 6796.1367 57923426. -0.023849172 0.15027273 -39.644377 36.349370 6798.6563 54011602. -0.031900514 0.15638377 -39.718527 36.225787 6801.1758 50104015. -0.057087464 0.16249481 -39.791166 36.103716 6803.6954 48377093. -0.045387787 0.16860584 -39.860373 35.985076 6806.2150 48839880. -0.012852699 0.17471688 -39.933975 35.861641