# # 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 = 52.065311 km # Date (UTC) = 2014-12-23T09:01:23.444 # Date (julian) = 2457014.87596579 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.2518 5.4468184e+10 0.030704002 0.030248298 -15.396646 49.742983 6495.5370 5.1100550e+10 0.037284126 0.030937406 -15.504251 49.647333 6497.8223 4.7665501e+10 0.043618731 0.031626515 -15.611856 49.551684 6500.1075 4.4330492e+10 0.049745463 0.032315623 -15.717629 49.454203 6502.3927 4.1023316e+10 0.055776283 0.033004731 -15.821248 49.354570 6504.6780 3.8027885e+10 0.061920605 0.033693840 -15.924867 49.254936 6506.9632 3.5514202e+10 0.068403843 0.034382948 -16.028487 49.159089 6509.2485 3.3246725e+10 0.075462536 0.035072056 -16.132106 49.063440 6511.5337 3.1120567e+10 0.083264922 0.035761165 -16.235732 48.967786 6513.8189 2.9115278e+10 0.092015202 0.036450273 -16.339365 48.872125 6516.1042 2.7267310e+10 0.10188871 0.037139381 -16.442998 48.776465 6518.3894 2.5530490e+10 0.11294377 0.037828490 -16.546617 48.680815 6520.6747 2.3937105e+10 0.12531197 0.038517598 -16.650236 48.585165 6522.9599 2.2454892e+10 0.13630011 0.039168612 -16.752168 48.489517 6525.2451 2.1009152e+10 0.14474864 0.039754237 -16.851802 48.393869 6527.5304 1.9645146e+10 0.15252087 0.041101534 -16.951436 48.298222 6529.8156 1.8350998e+10 0.16017783 0.043534999 -17.051070 48.202572 6532.1009 1.7154202e+10 0.16722946 0.046768452 -17.150704 48.106923 6534.3861 1.5994936e+10 0.17133575 0.048052566 -17.248730 48.009655 6536.6713 1.4878653e+10 0.17290782 0.048391171 -17.344392 47.910008 6538.9566 1.3836683e+10 0.17278780 0.049622488 -17.440053 47.810361 6541.2418 1.2846915e+10 0.17104877 0.051248106 -17.539275 47.714297 6543.5271 1.1972806e+10 0.16897699 0.051520225 -17.638909 47.618649 6545.8123 1.1147652e+10 0.16682172 0.052462845 -17.737001 47.523001 6548.0975 1.0379611e+10 0.16557355 0.053696778 -17.832649 47.427352 6550.3828 9.6965110e+09 0.16418802 0.055081207 -17.928298 47.331703 6552.6680 9.0612185e+09 0.16284098 0.055418623 -18.020459 47.232545 6554.9533 8.4714294e+09 0.16136378 0.054852384 -18.112134 47.132897 6557.2385 7.9229568e+09 0.15948078 0.053716606 -18.205275 47.034725 6559.5238 7.4092811e+09 0.15731875 0.052328064 -18.300923 46.939077 6561.8090 6.9434538e+09 0.15510305 0.050974026 -18.396572 46.843430 6564.0942 6.5228021e+09 0.15261650 0.048728890 -18.488794 46.747781 6566.3795 6.1191259e+09 0.15098226 0.046968215 -18.580457 46.652131 6568.6647 5.7412185e+09 0.14953993 0.045160629 -18.672121 46.555086 6570.9500 5.3825946e+09 0.14823795 0.044524004 -18.763785 46.455452 6573.2352 5.0448225e+09 0.14664397 0.043468740 -18.855448 46.355818 6575.5204 4.7395531e+09 0.14450946 0.041852543 -18.947122 46.259525 6577.8057 4.4566588e+09 0.14205392 0.038954843 -19.038797 46.163863 6580.0909 4.2019344e+09 0.13931028 0.036436728 -19.129144 46.068206 6582.3762 3.9714912e+09 0.13646668 0.035191430 -19.216821 45.972559 6584.6614 3.7561594e+09 0.13372772 0.034155220 -19.304498 45.876911 6586.9466 3.5631595e+09 0.13124817 0.033159059 -19.392177 45.777982 6589.2319 3.3749739e+09 0.12911963 0.032585938 -19.479855 45.678348 6591.5171 3.1806231e+09 0.12691791 0.028618393 -19.567533 45.579965 6593.8024 3.0023314e+09 0.12491999 0.026356263 -19.655211 45.484316 6596.0876 2.8359495e+09 0.12240726 0.025726876 -19.742888 45.388667 6598.3728 2.6877770e+09 0.12073560 0.025229154 -19.830575 45.293008 6600.6581 2.5481260e+09 0.12048548 0.026342786 -19.918265 45.197348 6602.9433 2.4117518e+09 0.11974707 0.026711633 -20.004771 45.100511 6605.2286 2.2945378e+09 0.11899057 0.026856796 -20.088464 45.000877 6607.5138 2.1916903e+09 0.11724502 0.024692409 -20.172157 44.901244 6609.7991 2.0889585e+09 0.11407725 0.023943288 -20.264082 44.795336 6612.0843 1.9785429e+09 0.11154144 0.024257770 -20.358237 44.687729 6614.3695 1.8626089e+09 0.11048690 0.023685897 -20.446570 44.584558 6616.6548 1.7582721e+09 0.10889758 0.023385066 -20.530263 44.484924 6618.9400 1.6669163e+09 0.10795104 0.024480620 -20.613956 44.385479 6621.2253 1.5843766e+09 0.10680611 0.025014784 -20.697648 44.289831 6623.5105 1.5092183e+09 0.10470638 0.024680958 -20.781340 44.194183 6625.7957 1.4324569e+09 0.10301670 0.026347160 -20.862894 44.096384 6628.0810 1.3670712e+09 0.10072461 0.025735974 -20.942612 43.996737 6630.3662 1.3052524e+09 0.098621050 0.025929204 -21.022330 43.897206 6632.6515 1.2516904e+09 0.096320692 0.026110461 -21.102036 43.801557 6634.9367 1.2022371e+09 0.094224355 0.026395170 -21.181743 43.705908 6637.2219 1.1503083e+09 0.092313818 0.026052710 -21.261450 43.610259 6639.5072 1.0998832e+09 0.091558380 0.025446796 -21.341158 43.514609 6641.7924 1.0484265e+09 0.092081217 0.025150991 -21.420974 43.418781 6644.0777 9.9283003e+08 0.091267691 0.025352000 -21.510646 43.306691 6646.3629 9.3952393e+08 0.090413126 0.026108000 -21.600318 43.194601 6648.6481 8.8690315e+08 0.089402100 0.027398157 -21.682221 43.095335 6650.9334 8.4029346e+08 0.088992865 0.026468916 -21.761938 42.999674 6653.2186 8.0160955e+08 0.088575574 0.027637286 -21.840570 42.902935 6655.5039 7.6371212e+08 0.087036932 0.027818417 -21.916292 42.803301 6657.7891 7.3076712e+08 0.085282121 0.029816456 -21.992014 42.703667 6660.0744 6.9701309e+08 0.083728378 0.031693580 -22.067736 42.607071 6662.3596 6.6802994e+08 0.082076441 0.032842518 -22.143458 42.511421 6664.6448 6.4157061e+08 0.080935036 0.029846666 -22.221578 42.411608 6666.9301 6.1240918e+08 0.080506733 0.027089832 -22.306766 42.299518 6669.2153 5.8052430e+08 0.079207637 0.028134558 -22.391736 42.187805 6671.5006 5.4743576e+08 0.079126469 0.026872482 -22.467458 42.092157 6673.7858 5.2012825e+08 0.078236633 0.028634436 -22.543180 41.996510 6676.0710 4.9830629e+08 0.075659146 0.031759508 -22.618907 41.900855 6678.3563 4.8110788e+08 0.074298611 0.030698319 -22.694639 41.805193 6680.6415 4.6435933e+08 0.074524213 0.029579948 -22.770395 41.709451 6682.9268 4.4609208e+08 0.074872803 0.031132624 -22.851100 41.597361 6685.2120 4.2790090e+08 0.074318248 0.032928764 -22.931805 41.485271 6687.4972 4.0617871e+08 0.072079024 0.034065583 -23.005563 41.385916 6689.7825 3.8687817e+08 0.069652624 0.033311663 -23.077299 41.290268 6692.0677 3.7152799e+08 0.068538470 0.032686684 -23.150093 41.193562 6694.3530 3.5881049e+08 0.067663849 0.030766326 -23.225815 41.093928 6696.6382 3.4800604e+08 0.067288098 0.029940947 -23.301537 40.994294 6698.9234 3.3470099e+08 0.065968780 0.031485355 -23.377636 40.888631 6701.2087 3.1895514e+08 0.064049036 0.031715652 -23.453857 40.781024 6703.4939 3.0487330e+08 0.063844730 0.034911204 -23.527725 40.677603 6705.7792 2.9146850e+08 0.063783852 0.038053814 -23.599471 40.577956 6708.0644 2.8297235e+08 0.063239343 0.040113719 -23.671370 40.478174 6710.3497 2.7146916e+08 0.061687079 0.040564935 -23.752075 40.370568 6712.6349 2.5839567e+08 0.059349175 0.043008743 -23.832780 40.262962 6714.9201 2.4571294e+08 0.057064091 0.047372584 -23.903295 40.164761 6717.2054 2.3585192e+08 0.054678451 0.049861565 -23.971046 40.069112 6719.4906 2.2892750e+08 0.052488442 0.050903718 -24.041147 39.968902 6721.7759 2.1978593e+08 0.052472811 0.050537668 -24.117368 39.856812 6724.0611 2.1015821e+08 0.050049438 0.049416459 -24.193191 39.745496 6726.3463 1.9685733e+08 0.045959183 0.040954491 -24.260942 39.649847 6728.6316 1.8945664e+08 0.045077410 0.040523254 -24.328693 39.554198 6730.9168 1.8555718e+08 0.043034152 0.041635975 -24.401000 39.449705 6733.2021 1.8135867e+08 0.041464468 0.045021354 -24.477222 39.337614 6735.4873 1.7339841e+08 0.041833066 0.049810739 -24.553447 39.226898 6737.7725 1.6103538e+08 0.043090856 0.056596519 -24.629679 39.119277 6740.0578 1.4815282e+08 0.042741731 0.064149075 -24.704945 39.012584 6742.3430 1.3974469e+08 0.039887944 0.069446594 -24.768711 38.916935 6744.6283 1.3615774e+08 0.035582003 0.078279359 -24.832476 38.821286 6746.9135 1.3286411e+08 0.031066140 0.068366748 -24.903321 38.716292 6749.1987 1.3231175e+08 0.030439904 0.072223516 -24.979542 38.604202 6751.4840 1.2768073e+08 0.026921156 0.073916304 -25.054248 38.493628 6753.7692 1.2079927e+08 0.024796950 0.075466654 -25.125985 38.386023 6756.0545 1.1548270e+08 0.022237655 0.074307067 -25.197723 38.278417 6758.3397 1.0915906e+08 0.021803481 0.074423686 -25.269461 38.170810 6760.6250 1.0482465e+08 0.022352760 0.077253025 -25.341199 38.063202 6762.9102 1.0127257e+08 0.027472191 0.076582631 -25.412936 37.951662 6765.1954 95423374. 0.030022606 0.079566870 -25.484674 37.839572 6767.4807 91290860. 0.028878219 0.081437535 -25.556411 37.730384 6769.7659 86564150. 0.023937155 0.086311941 -25.628149 37.622778 6772.0512 81436394. 0.019770098 0.091854655 -25.694908 37.520149 6774.3364 80322573. 0.015783014 0.097397369 -25.754696 37.424487 6776.6216 77372908. 0.011647126 0.10294008 -25.814484 37.328825 6778.9069 75166214. 0.0074744449 0.10848280 -25.885120 37.218250 6781.1921 70573734. 0.0030182521 0.11402551 -25.956857 37.106159 6783.4774 66000830. -0.0016782701 0.11956822 -26.025558 36.997107 6785.7626 64208907. -0.0064747941 0.12511094 -26.092812 36.889502 6788.0478 62558569. -0.011785387 0.13065365 -26.160066 36.781896 6790.3331 59827835. -0.018282386 0.13619637 -26.227320 36.674289 6792.6183 54866029. -0.028618496 0.14173908 -26.296657 36.562239 6794.9036 51568492. -0.067534668 0.14728179 -26.373520 36.434134 6797.1888 49736868. -0.044097436 0.15282451 -26.447835 36.311464 6799.4740 50882794. 0.013937251 0.15836722 -26.515089 36.203857