# # 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 = 42.783807 km # Date (UTC) = 2012-01-21T09:14:51.519 # Date (julian) = 2455947.88531851 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6499.4917 1.6926205e+11 0.044051371 0.032129947 -19.888429 51.029299 6501.3308 1.4469190e+11 0.051209029 0.032684508 -20.008707 50.899398 6503.1698 1.2567186e+11 0.058536522 0.033239068 -20.126273 50.772426 6505.0089 1.1065965e+11 0.066142954 0.033793629 -20.229367 50.661085 6506.8479 9.8886234e+10 0.074153727 0.034348189 -20.332460 50.549744 6508.6870 8.8921246e+10 0.082558988 0.034902750 -20.444622 50.428327 6510.5260 7.9405259e+10 0.091212199 0.035457311 -20.560089 50.303236 6512.3651 7.0528652e+10 0.10009985 0.036011871 -20.675541 50.175016 6514.2041 6.2484803e+10 0.10924198 0.036566432 -20.790986 50.045142 6516.0432 5.5785041e+10 0.11880256 0.037120992 -20.896950 49.925933 6517.8822 5.0506577e+10 0.12890701 0.037675553 -20.995920 49.814592 6519.7213 4.6166450e+10 0.13947661 0.038230114 -21.097371 49.700459 6521.5603 4.2116104e+10 0.15027845 0.038784674 -21.212838 49.570558 6523.3994 3.8336615e+10 0.15728577 0.039278102 -21.326822 49.441992 6525.2384 3.5097873e+10 0.16360897 0.039755002 -21.421668 49.330651 6527.0775 3.2448318e+10 0.16895343 0.040772732 -21.516513 49.219310 6528.9165 3.0094766e+10 0.17238326 0.042169579 -21.621588 49.099074 6530.7556 2.7665697e+10 0.17589623 0.044886516 -21.732245 48.973983 6532.5946 2.5373092e+10 0.17913989 0.047180955 -21.833915 48.856709 6534.4337 2.3572331e+10 0.17962230 0.048065879 -21.928760 48.745370 6536.2727 2.2109753e+10 0.17822498 0.048034533 -22.025183 48.631368 6538.1118 2.0638353e+10 0.17807648 0.049211119 -22.131028 48.501467 6539.9508 1.9177089e+10 0.17747610 0.050794600 -22.235891 48.372771 6541.7899 1.7843226e+10 0.17500651 0.051070373 -22.326614 48.261430 6543.6289 1.6795339e+10 0.17308547 0.051546963 -22.417336 48.150089 6545.4680 1.5869150e+10 0.17156311 0.052459760 -22.517736 48.026870 6547.3070 1.4854603e+10 0.17021291 0.053404128 -22.623581 47.896969 6549.1461 1.3852878e+10 0.16825194 0.054115161 -22.720935 47.777489 6550.9851 1.2961052e+10 0.16671318 0.055232031 -22.811657 47.666148 6552.8242 1.2224805e+10 0.16573428 0.055379318 -22.901816 47.554807 6554.6632 1.1623216e+10 0.16392599 0.054846298 -22.988415 47.443466 6556.5023 1.1014056e+10 0.16176192 0.053939279 -23.075013 47.332125 6558.3413 1.0358569e+10 0.15978268 0.052948438 -23.171868 47.207598 6560.1804 9.7034023e+09 0.15765936 0.052111661 -23.272881 47.077723 6562.0194 9.0726742e+09 0.15516982 0.050861402 -23.362168 46.959571 6563.8585 8.5532785e+09 0.15223306 0.048935288 -23.444643 46.848230 6565.6975 8.1381966e+09 0.14994888 0.047526328 -23.527974 46.736890 6567.5366 7.7820969e+09 0.14792636 0.046163485 -23.614572 46.625550 6569.3756 7.4373757e+09 0.14554507 0.044876873 -23.701169 46.514211 6571.2147 7.0377776e+09 0.14335992 0.044444639 -23.795300 46.388346 6573.0537 6.5972840e+09 0.14122632 0.043614355 -23.891523 46.258445 6574.8928 6.1587826e+09 0.13907397 0.042426199 -23.978067 46.141611 6576.7318 5.7826883e+09 0.13687055 0.040529028 -24.060542 46.030270 6578.5709 5.4858920e+09 0.13461964 0.037748109 -24.143016 45.918930 6580.4099 5.2217583e+09 0.13277226 0.036141908 -24.225490 45.807589 6582.2490 4.9838014e+09 0.13101261 0.035226037 -24.307964 45.696248 6584.0880 4.7818987e+09 0.12898723 0.034467551 -24.386917 45.584908 6585.9271 4.5898476e+09 0.12711643 0.033229585 -24.465268 45.473567 6587.7661 4.3784308e+09 0.12579020 0.033328117 -24.551287 45.354262 6589.6052 4.1376819e+09 0.12398228 0.031845332 -24.647510 45.224361 6591.4442 3.8833196e+09 0.12179295 0.028700635 -24.737467 45.100966 6593.2833 3.6626969e+09 0.11991486 0.026838846 -24.815818 44.989625 6595.1223 3.4767311e+09 0.11769980 0.025636258 -24.894169 44.878285 6596.9614 3.3140020e+09 0.11523522 0.025722903 -24.968703 44.766944 6598.8004 3.1544514e+09 0.11331981 0.025025007 -25.042930 44.655603 6600.6395 3.0002072e+09 0.11296186 0.026304550 -25.119222 44.544263 6602.4785 2.8590195e+09 0.11193810 0.027108266 -25.197573 44.432924 6604.3176 2.7343029e+09 0.11036576 0.026259851 -25.275612 44.321584 6606.1566 2.6207580e+09 0.10946131 0.027222485 -25.349839 44.210244 6607.9957 2.5117500e+09 0.10702662 0.023740881 -25.424066 44.098903 6609.8347 2.3912763e+09 0.10399549 0.023953889 -25.509474 43.975487 6611.6738 2.2565561e+09 0.10132891 0.024528777 -25.600885 43.845585 6613.5128 2.1236532e+09 0.10018286 0.023761753 -25.680106 43.726302 6615.3519 2.0062647e+09 0.098814271 0.023262358 -25.750209 43.614962 6617.1909 1.9101729e+09 0.097731804 0.023502555 -25.820919 43.503621 6619.0300 1.8305819e+09 0.097156071 0.024533150 -25.895146 43.392280 6620.8690 1.7529122e+09 0.096662471 0.025047245 -25.969373 43.280940 6622.7081 1.6777521e+09 0.095592806 0.024569523 -26.043601 43.169599 6624.5471 1.6068643e+09 0.094273070 0.025155191 -26.117828 43.058258 6626.3862 1.5341721e+09 0.093055706 0.026098863 -26.190830 42.946917 6628.2252 1.4715653e+09 0.091846418 0.025794544 -26.260933 42.835576 6630.0643 1.4115939e+09 0.090705998 0.025928460 -26.331036 42.724236 6631.9033 1.3588474e+09 0.089123481 0.026022527 -26.401140 42.612895 6633.7424 1.3127596e+09 0.087805159 0.026281866 -26.471243 42.501554 6635.5814 1.2574385e+09 0.086533060 0.026486983 -26.546564 42.381926 6637.4205 1.1976394e+09 0.085436840 0.025955469 -26.628338 42.252051 6639.2595 1.1348218e+09 0.084684389 0.025535310 -26.705814 42.129001 6641.0986 1.0750285e+09 0.085191904 0.025148635 -26.775918 42.017661 6642.9376 1.0274915e+09 0.084734657 0.025190066 -26.846021 41.906321 6644.7767 9.8515340e+08 0.083683369 0.025427549 -26.916125 41.794981 6646.6157 9.4328446e+08 0.082517505 0.026238873 -26.986228 41.683640 6648.4548 8.9951257e+08 0.081452054 0.027268721 -27.054194 41.572299 6650.2938 8.5581578e+08 0.080856997 0.026322505 -27.120173 41.460959 6652.1329 8.1818685e+08 0.080202084 0.027287084 -27.186153 41.349618 6653.9719 7.8675677e+08 0.079423540 0.028021898 -27.252132 41.238277 6655.8110 7.5694279e+08 0.077878393 0.027945318 -27.318112 41.126937 6657.6500 7.2340013e+08 0.076657585 0.029655134 -27.384091 41.015596 6659.4891 6.9037034e+08 0.075530940 0.031732574 -27.450071 40.904255 6661.3281 6.6156267e+08 0.074503110 0.032702077 -27.516050 40.792915 6663.1672 6.3277786e+08 0.073680903 0.032436881 -27.582030 40.681573 6665.0062 6.0835201e+08 0.073368414 0.028536911 -27.648010 40.570232 6666.8453 5.8524283e+08 0.073138177 0.027073310 -27.713990 40.458891 6668.6843 5.6576362e+08 0.072219279 0.028076364 -27.779969 40.347550 6670.5234 5.4716224e+08 0.072234433 0.027086156 -27.845949 40.236210 6672.3624 5.2596856e+08 0.072039687 0.027089674 -27.911928 40.124869 6674.2015 5.0345229e+08 0.071258922 0.029124758 -27.977908 40.013529 6676.0405 4.7979435e+08 0.069352100 0.031739850 -28.049878 39.884218 6677.8796 4.5537690e+08 0.068593523 0.031107794 -28.122045 39.754318 6679.7186 4.3083405e+08 0.068657294 0.029673923 -28.185038 39.640932 6681.5577 4.1166837e+08 0.069433412 0.030085206 -28.246895 39.529592 6683.3967 3.9849219e+08 0.069804524 0.031770002 -28.308751 39.418251 6685.2358 3.8188267e+08 0.069611045 0.032953886 -28.370606 39.306910 6687.0748 3.6826997e+08 0.068026331 0.034301163 -28.432462 39.195570 6688.9139 3.4931798e+08 0.065611343 0.033996146 -28.494318 39.084228 6690.7529 3.3287246e+08 0.064831759 0.033029577 -28.556174 38.972887 6692.5920 3.1719537e+08 0.064077685 0.032077892 -28.618030 38.861546 6694.4310 3.0221491e+08 0.063369394 0.030656908 -28.679886 38.750205 6696.2701 2.9372565e+08 0.063154173 0.029788000 -28.741741 38.639648 6698.1091 2.8429472e+08 0.062451321 0.030367618 -28.803597 38.532432 6699.9482 2.7629780e+08 0.061155323 0.030715529 -28.865453 38.425216 6701.7872 2.6667734e+08 0.059685730 0.032564543 -28.924155 38.314845 6703.6263 2.5650817e+08 0.059978749 0.035242399 -28.981887 38.203504 6705.4653 2.4533759e+08 0.060130266 0.037495877 -29.042890 38.085856 6707.3044 2.3484195e+08 0.059838372 0.040143223 -29.110246 37.955955 6709.1434 2.2006494e+08 0.059299881 0.041041312 -29.176164 37.830904 6710.9825 2.1057822e+08 0.057821490 0.040688804 -29.238021 37.719563 6712.8215 2.0440700e+08 0.056068507 0.043355273 -29.299877 37.608221 6714.6606 1.9746482e+08 0.054228883 0.047353071 -29.358284 37.496881 6716.4996 1.9088309e+08 0.052535541 0.049137275 -29.416017 37.385540 6718.3387 1.7895333e+08 0.050626537 0.050339888 -29.473749 37.274199 6720.1777 1.6687866e+08 0.049964951 0.050399173 -29.531481 37.162859 6722.0168 1.6168256e+08 0.049865087 0.050584455 -29.589213 37.051518 6723.8558 1.5346780e+08 0.048001346 0.049846257 -29.646944 36.940177 6725.6949 1.4393999e+08 0.044214256 0.041141959 -29.704676 36.828837 6727.5339 1.3779272e+08 0.043130738 0.040249034 -29.760094 36.717496 6729.3730 1.3194810e+08 0.042367775 0.040796825 -29.813702 36.606155 6731.2120 1.2672333e+08 0.040700920 0.042172010 -29.869184 36.492943 6733.0511 1.1902776e+08 0.039584197 0.044201650 -29.936527 36.367878 6734.8901 1.0970262e+08 0.039390430 0.049300043 -30.003081 36.243602 6736.7292 1.0322885e+08 0.040696671 0.053111724 -30.056689 36.132261 6738.5682 99113760. 0.041383703 0.060449473 -30.110297 36.020921 6740.4073 93859717. 0.040713432 0.064746134 -30.163905 35.909580 6742.2463 90061291. 0.038418262 0.069210986 -30.217514 35.798239 6744.0854 88620413. 0.034326819 0.077859453 -30.271978 35.686899 6745.9244 87760395. 0.033529391 0.078955510 -30.329710 35.575558 6747.7635 86352678. 0.029383685 0.067098324 -30.387442 35.464217 6749.6025 81669276. 0.027718969 0.072112959 -30.448940 35.338354 6751.4416 80085075. 0.025344735 0.073898374 -30.511485 35.208453 6753.2806 76396907. 0.023383628 0.073885465 -30.567739 35.094521 6755.1197 74683252. 0.021658818 0.074552873 -30.621347 34.987305 6756.9587 71655057. 0.019022058 0.076633867 -30.673805 34.878938 6758.7978 66857995. 0.019404887 0.075392337 -30.723290 34.767597 6760.6368 66510027. 0.019318171 0.077275679 -30.772776 34.656255 6762.4759 65055672. 0.022755312 0.077283210 -30.833414 34.529064 6764.3149 65808541. 0.023813804 0.079498373 -30.895958 34.399163 6766.1540 63690972. 0.020977871 0.080062055 -30.951573 34.283655 6767.9930 60946023. -0.0062148997 0.080863829 -31.005182 34.172315 6769.8321 59658935. 0.010423227 0.086472423 -31.057345 34.062420 6771.6711 57144675. 0.051073305 0.090932927 -31.106829 33.955204