# # 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 = 33.237697 km # Date (UTC) = 2016-12-20T09:16:55.296 # Date (julian) = 2457742.88675112 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6525.3612 2.8971373e+10 0.17352207 0.039740990 -20.384966 48.852339 6526.9966 2.6641937e+10 0.17670752 0.040712898 -20.459128 48.783882 6528.6320 2.4542509e+10 0.17803050 0.041943825 -20.533290 48.715425 6530.2673 2.2654675e+10 0.18036506 0.044202974 -20.605235 48.644765 6531.9027 2.0935480e+10 0.18185863 0.046542599 -20.676535 48.573465 6533.5381 1.9307295e+10 0.18202118 0.047748261 -20.747836 48.502164 6535.1735 1.7818582e+10 0.18211874 0.048149046 -20.819137 48.431629 6536.8088 1.6443806e+10 0.18131244 0.048514197 -20.890437 48.363180 6538.4442 1.5244623e+10 0.18058321 0.049372993 -20.961738 48.294731 6540.0796 1.4101240e+10 0.18031038 0.050891706 -21.033038 48.226282 6541.7150 1.3013847e+10 0.17808587 0.051094670 -21.104339 48.157834 6543.3503 1.2016955e+10 0.17639408 0.051473844 -21.175639 48.089386 6544.9857 1.1085795e+10 0.17525808 0.052443985 -21.246940 48.020938 6546.6211 1.0253206e+10 0.17289742 0.052975590 -21.317513 47.952487 6548.2565 9.4848660e+09 0.17099987 0.053744238 -21.385971 47.884029 6549.8918 8.7660623e+09 0.16935977 0.054875146 -21.454429 47.815571 6551.5272 8.1215729e+09 0.16677863 0.055420815 -21.522887 47.747113 6553.1626 7.5317639e+09 0.16435251 0.055253330 -21.591338 47.678663 6554.7980 7.0194442e+09 0.16180895 0.054849125 -21.659787 47.610215 6556.4334 6.5282768e+09 0.15890132 0.053949415 -21.728235 47.541767 6558.0687 6.0855716e+09 0.15677819 0.053180741 -21.795015 47.474987 6559.7041 5.7215735e+09 0.15444294 0.052307708 -21.856618 47.413384 6561.3395 5.4044861e+09 0.15159607 0.051205394 -21.918221 47.351780 6562.9749 5.1632839e+09 0.14921139 0.049952295 -21.979824 47.290177 6564.6102 4.9061003e+09 0.14671738 0.048495042 -22.043808 47.226193 6566.2456 4.6414835e+09 0.14423155 0.047043947 -22.112256 47.157744 6567.8810 4.3706373e+09 0.14255988 0.045872297 -22.180704 47.089295 6569.5164 4.0925477e+09 0.14067089 0.044886031 -22.249153 47.020846 6571.1517 3.8394558e+09 0.13875419 0.044461835 -22.315208 46.949990 6572.7871 3.6053587e+09 0.13691556 0.043779401 -22.380813 46.878680 6574.4225 3.3905805e+09 0.13449716 0.042652089 -22.446418 46.807370 6576.0579 3.1978584e+09 0.13199041 0.041304800 -22.512020 46.737021 6577.6932 3.0173793e+09 0.12964242 0.039131473 -22.577617 46.668573 6579.3286 2.8458980e+09 0.12674698 0.036889848 -22.643213 46.600125 6580.9640 2.6871719e+09 0.12407021 0.035629894 -22.708810 46.531677 6582.5994 2.5443633e+09 0.12192326 0.035130693 -22.774406 46.463228 6584.2347 2.4191991e+09 0.11922847 0.034387643 -22.840003 46.394779 6585.8701 2.3011271e+09 0.11662514 0.033275141 -22.905600 46.326330 6587.5055 2.1810222e+09 0.11451050 0.033270365 -22.970275 46.257881 6589.1409 2.0652828e+09 0.11184727 0.032766525 -23.033019 46.189433 6590.7762 1.9569762e+09 0.10911773 0.029618148 -23.095764 46.120985 6592.4116 1.8568495e+09 0.10688630 0.027673727 -23.158508 46.052537 6594.0470 1.7674388e+09 0.10469325 0.026146731 -23.221259 45.981752 6595.6824 1.6759994e+09 0.10262638 0.025694334 -23.284012 45.910442 6597.3177 1.5909125e+09 0.10094084 0.025622462 -23.346764 45.839132 6598.9531 1.5168610e+09 0.099318757 0.024952116 -23.409514 45.768712 6600.5885 1.4352430e+09 0.099373903 0.026199696 -23.472259 45.700263 6602.2239 1.3622902e+09 0.098755327 0.027325598 -23.535004 45.631814 6603.8592 1.2931997e+09 0.097438278 0.026154607 -23.597749 45.563364 6605.4946 1.2263845e+09 0.097158822 0.027079985 -23.660494 45.494916 6607.1300 1.1710300e+09 0.095859525 0.025450315 -23.723238 45.426469 6608.7654 1.1124061e+09 0.093378523 0.023712135 -23.785982 45.358021 6610.4007 1.0499671e+09 0.091154515 0.024385877 -23.848726 45.289573 6612.0361 9.9783410e+08 0.089393589 0.024293767 -23.911470 45.221124 6613.6715 9.4892792e+08 0.088549489 0.023819962 -23.974215 45.152674 6615.3069 9.0038433e+08 0.087414472 0.023260973 -24.036959 45.084225 6616.9422 8.5760811e+08 0.086229435 0.023430184 -24.097451 45.013510 6618.5776 8.0845169e+08 0.085639473 0.024206965 -24.157351 44.942200 6620.2130 7.6952334e+08 0.084993049 0.024835834 -24.217252 44.870890 6621.8484 7.2920439e+08 0.083882787 0.024808252 -24.277150 44.800400 6623.4837 6.8608814e+08 0.082416681 0.024671045 -24.337043 44.731952 6625.1191 6.5781788e+08 0.081299721 0.025539749 -24.396935 44.663504 6626.7545 6.3229628e+08 0.079455160 0.025629608 -24.456827 44.595056 6628.3899 6.0790149e+08 0.078456146 0.025861386 -24.516720 44.526607 6630.0252 5.8079693e+08 0.077497913 0.025928364 -24.576612 44.458158 6631.6606 5.4247016e+08 0.076349704 0.025997871 -24.636505 44.389709 6633.2960 5.1239139e+08 0.075651889 0.026203931 -24.695617 44.320480 6634.9314 4.8720647e+08 0.074851759 0.026394781 -24.752657 44.249179 6636.5667 4.6091519e+08 0.073870459 0.026329662 -24.809697 44.177879 6638.2021 4.4248181e+08 0.073328274 0.025662836 -24.866737 44.106578 6639.8375 4.1949982e+08 0.073469500 0.025328734 -24.923783 44.037459 6641.4729 4.0062683e+08 0.073852240 0.025149906 -24.980832 43.969001 6643.1082 3.8278131e+08 0.073597674 0.025208963 -25.037880 43.900542 6644.7436 3.6504015e+08 0.072957308 0.025423976 -25.094926 43.832087 6646.3790 3.5531135e+08 0.072115233 0.026116329 -25.151967 43.763639 6648.0144 3.4067183e+08 0.071521752 0.026973907 -25.209008 43.695191 6649.6497 3.2434865e+08 0.070927227 0.026738039 -25.266048 43.626743 6651.2851 3.0592901e+08 0.070682723 0.026702673 -25.323088 43.556141 6652.9205 2.9091760e+08 0.070543345 0.027503788 -25.380128 43.484840 6654.5559 2.8050196e+08 0.069731931 0.027799417 -25.437168 43.413540 6656.1913 2.7163366e+08 0.068306971 0.028191278 -25.494209 43.342950 6657.8266 2.6414606e+08 0.067281501 0.029859972 -25.551249 43.274501 6659.4620 2.4974572e+08 0.066169462 0.031738224 -25.608290 43.206052 6661.0974 2.3684940e+08 0.065188142 0.032584546 -25.665330 43.137603 6662.7328 2.2515265e+08 0.064394484 0.032633154 -25.725292 43.062790 6664.3681 2.1101195e+08 0.063678297 0.030859121 -25.786264 42.985773 6666.0035 1.9937014e+08 0.063935484 0.026909278 -25.847237 42.908756 6667.6389 1.8570136e+08 0.063703223 0.027338129 -25.905745 42.835321 6669.2743 1.7343247e+08 0.063126255 0.028074024 -25.962785 42.764020 6670.9096 1.7035991e+08 0.063441977 0.026907215 -26.019825 42.692720 6672.5450 1.6605704e+08 0.063403779 0.027195494 -26.076522 42.621763 6674.1804 1.5935303e+08 0.062834037 0.029106954 -26.130710 42.553314 6675.8158 1.5356514e+08 0.061314556 0.031360830 -26.184899 42.484865 6677.4511 1.4024158e+08 0.060543794 0.031716887 -26.239087 42.416416 6679.0865 1.3235694e+08 0.060301066 0.030196285 -26.293276 42.347968 6680.7219 1.2386931e+08 0.061448119 0.029597301 -26.347464 42.279520 6682.3573 1.2130571e+08 0.062130256 0.030697502 -26.401653 42.211072 6683.9926 1.2406467e+08 0.062320487 0.032643296 -26.456225 42.141702 6685.6280 1.2001434e+08 0.062174149 0.033368170 -26.513980 42.064695 6687.2634 1.1307260e+08 0.060777749 0.034196008 -26.571734 41.987688 6688.8988 1.0403830e+08 0.058795407 0.033992655 -26.629477 41.910699 6690.5341 94377531. 0.058366035 0.033054651 -26.683715 41.839321 6692.1695 88755594. 0.057818996 0.032568486 -26.737911 41.768011 6693.8049 82664528. 0.057334155 0.031327963 -26.792106 41.696701 6695.4403 73339509. 0.057616787 0.029778603 -26.844914 41.626780 6697.0756 68133545. 0.057540688 0.030100837 -26.896251 41.558331 6698.7110 66521980. 0.056523031 0.031193763 -26.947587 41.489882 6700.3464 64655848. 0.055037230 0.030924644 -26.998924 41.421433 6701.9818 65593977. 0.053779244 0.032849971 -27.056543 41.344608 6703.6171 62775637. 0.054573051 0.035219512 -27.114298 41.267603