# # 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 = 53.195696 km # Date (UTC) = 2014-01-19T10:58:55.481 # Date (julian) = 2456676.95758659 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6500.4787 5.7880081e+10 0.043727097 0.032427548 87.915649 43.745889 6502.4775 5.2902806e+10 0.051699346 0.033030293 88.004282 43.615270 6504.4763 4.8899735e+10 0.060052909 0.033633038 88.089438 43.489773 6506.4752 4.5684737e+10 0.068879913 0.034235784 88.174596 43.364277 6508.4740 4.2715601e+10 0.078097536 0.034838529 88.259755 43.238781 6510.4729 4.0013816e+10 0.087728642 0.035441275 88.343603 43.114596 6512.4717 3.7753797e+10 0.097888698 0.036044020 88.424280 42.993581 6514.4706 3.5497621e+10 0.10839328 0.036646765 88.505783 42.871006 6516.4694 3.3017579e+10 0.11908622 0.037249511 88.599908 42.724587 6518.4682 3.0415308e+10 0.12997150 0.037852256 88.692029 42.581287 6520.4671 2.7884925e+10 0.14110923 0.038455001 88.772705 42.455791 6522.4659 2.5808197e+10 0.15140960 0.039039257 88.853382 42.330295 6524.4648 2.4064907e+10 0.15794786 0.039592067 88.934059 42.204799 6526.4636 2.2432036e+10 0.16311596 0.040154116 89.014735 42.079303 6528.4624 2.0918165e+10 0.16813056 0.041809338 89.092333 41.956885 6530.4613 1.9487936e+10 0.17247534 0.044474483 89.168527 41.835869 6532.4601 1.8180313e+10 0.17626676 0.047068576 89.246763 41.712812 6534.4590 1.7011078e+10 0.17785638 0.048072948 89.327440 41.587316 6536.4578 1.5830674e+10 0.17773431 0.048200113 89.409962 41.457122 6538.4566 1.4624979e+10 0.17785280 0.049379045 89.498857 41.310703 6540.4555 1.3424926e+10 0.17698165 0.051069287 89.583788 41.170817 6542.4543 1.2344490e+10 0.17471575 0.051174727 89.659985 41.045321 6544.4532 1.1469914e+10 0.17270001 0.052011970 89.736182 40.920188 6546.4520 1.0734540e+10 0.17057116 0.052836461 89.812375 40.799173 6548.4509 1.0094788e+10 0.16889258 0.053802287 89.888569 40.678158 6550.4497 9.4963878e+09 0.16747078 0.055097960 89.960952 40.553334 6552.4485 8.9569000e+09 0.16599796 0.055473870 90.032663 40.427837 6554.4474 8.4679607e+09 0.16390482 0.054841768 90.107150 40.302340 6556.4462 8.0010538e+09 0.16182119 0.053947523 90.183347 40.176842 6558.4451 7.5501842e+09 0.15976107 0.052860056 90.257805 40.053083 6560.4439 7.0925533e+09 0.15742579 0.051874072 90.329515 39.932070 6562.4427 6.6683849e+09 0.15507734 0.050458614 90.401226 39.810355 6564.4416 6.2859531e+09 0.15250009 0.048571470 90.472941 39.684856 6566.4404 5.9440893e+09 0.15033329 0.046933735 90.544655 39.559358 6568.4393 5.6302178e+09 0.14853217 0.045367868 90.616366 39.433862 6570.4381 5.3386668e+09 0.14691972 0.044736028 90.688076 39.308366 6572.4370 5.0610938e+09 0.14498554 0.043979923 90.759789 39.185981 6574.4358 4.8023935e+09 0.14244117 0.042645694 90.831503 39.064966 6576.4346 4.5560054e+09 0.13985313 0.040871117 90.901140 38.941876 6578.4335 4.3239972e+09 0.13687719 0.037965101 90.968367 38.816379 6580.4323 4.1117005e+09 0.13411370 0.036121227 91.036636 38.690882 6582.4312 3.9086283e+09 0.13179388 0.035176464 91.108350 38.565385 6584.4300 3.7162513e+09 0.12969705 0.034281272 91.180050 38.439901 6586.4288 3.5368538e+09 0.12794872 0.033165753 91.247291 38.318876 6588.4277 3.3550918e+09 0.12666645 0.033237104 91.314523 38.197860 6590.4265 3.1891970e+09 0.12480618 0.030268659 91.381754 38.073396 6592.4254 3.0400600e+09 0.12281473 0.027660363 91.448985 37.947900 6594.4242 2.8969134e+09 0.12074425 0.025939652 91.516214 37.822404 6596.4231 2.7644926e+09 0.11832366 0.025725350 91.583442 37.696908 6598.4219 2.6296000e+09 0.11670232 0.025205738 91.650670 37.572789 6600.4207 2.5029198e+09 0.11638998 0.025854829 91.717902 37.451774 6602.4196 2.3929179e+09 0.11569504 0.027158583 91.785133 37.330417 6604.4184 2.2862107e+09 0.11449261 0.026319719 91.852364 37.204921 6606.4173 2.1794697e+09 0.11383512 0.026754161 91.919595 37.079425 6608.4161 2.0797388e+09 0.11135574 0.023721370 91.983028 36.953945 6610.4149 1.9835837e+09 0.10853205 0.024399447 92.045765 36.828468 6612.4138 1.8937875e+09 0.10671556 0.024011588 92.111261 36.705730 6614.4126 1.8093403e+09 0.10555638 0.023656209 92.178492 36.584715 6616.4115 1.7239500e+09 0.10399773 0.023346879 92.244008 36.461986 6618.4103 1.6434572e+09 0.10322220 0.024080628 92.306756 36.336489 6620.4092 1.5726136e+09 0.10230463 0.024899046 92.369504 36.211672 6622.4080 1.5038736e+09 0.10076440 0.024649399 92.432252 36.090657 6624.4068 1.4366183e+09 0.098917981 0.025080086 92.495000 35.969642 6626.4057 1.3680773e+09 0.097480827 0.026074036 92.557748 35.844503 6628.4045 1.3051365e+09 0.096248062 0.025867333 92.620496 35.719006 6630.4034 1.2471334e+09 0.095134713 0.025929296 92.677838 35.607026 6632.4022 1.2107724e+09 0.093819815 0.026080572 92.732741 35.501140 6634.4010 1.1723301e+09 0.092598627 0.026356097 92.788737 35.392523 6636.3999 1.1320182e+09 0.091335993 0.026394462 92.851485 35.267027 6638.3987 1.0885082e+09 0.090531286 0.025654271 92.914233 35.141531 6640.3976 1.0388831e+09 0.090898253 0.025222009 92.972914 35.020104 6642.3964 9.9723925e+08 0.090900576 0.025167918 93.031183 34.899088 6644.3952 9.5636160e+08 0.089998475 0.025386324 93.092484 34.775039 6646.3941 9.1949080e+08 0.089032031 0.026124141 93.155232 34.649543 6648.3929 8.8156809e+08 0.088071978 0.027227314 93.215981 34.526045 6650.3918 8.4936740e+08 0.087490221 0.026344925 93.274246 34.405030 6652.3906 8.1629098e+08 0.086985212 0.027357995 93.332511 34.283053 6654.3895 7.8379016e+08 0.086097829 0.027870313 93.390776 34.157555 6656.3883 7.4914579e+08 0.084336803 0.028364225 93.449041 34.032058 6658.3871 7.1701307e+08 0.082912148 0.030747679 93.507310 33.910969 6660.3860 6.8747241e+08 0.081547614 0.031976836 93.565578 33.789954 6662.3848 6.5955252e+08 0.080153629 0.032828363 93.623844 33.668940 6664.3837 6.3442924e+08 0.078985760 0.030802278 93.682110 33.547926 6666.3825 6.0712639e+08 0.078793371 0.026983131 93.740375 33.424574 6668.3813 5.8225715e+08 0.077795697 0.027808240 93.798640 33.299076 6670.3802 5.5980168e+08 0.077449518 0.027152497 93.856906 33.174880 6672.3790 5.3773308e+08 0.077195440 0.027099292 93.915175 33.053865 6674.3779 5.1815331e+08 0.076279884 0.029273551 93.973443 32.932850 6676.3767 4.9745993e+08 0.074288250 0.031956514 94.031708 32.811835 6678.3756 4.7466618e+08 0.073644820 0.030685427 94.089973 32.690820 6680.3744 4.5640570e+08 0.074223167 0.029522264 94.144529 32.566095 6682.3732 4.3545703e+08 0.074982128 0.030709711 94.198315 32.440599 6684.3721 4.2196140e+08 0.075070928 0.032672973 94.254774 32.317777 6686.3709 4.0586633e+08 0.074233691 0.033976892 94.313040 32.196761 6688.3698 3.8727025e+08 0.071910358 0.033870544 94.369667 32.075746 6690.3686 3.7045830e+08 0.070539416 0.033073621 94.423452 31.954732 6692.3674 3.4941299e+08 0.069779572 0.032338637 94.476333 31.835226 6694.3663 3.4208876e+08 0.068949244 0.030747656 94.523391 31.725419 6696.3651 3.3513740e+08 0.068670940 0.029827489 94.570449 31.615611 6698.3640 3.2498032e+08 0.067749646 0.030717408 94.621441 31.499252 6700.3628 3.1242509e+08 0.066220241 0.030936826 94.675226 31.378237 6702.3617 2.9459340e+08 0.065195099 0.033165512 94.729012 31.257222 6704.3605 2.8118231e+08 0.065524366 0.036354575 94.782797 31.136209 6706.3593 2.7393444e+08 0.065353350 0.039071800 94.836582 31.015194 6708.3582 2.7038831e+08 0.064851330 0.040433621 94.890365 30.894179 6710.3570 2.6588471e+08 0.063486045 0.040566377 94.944147 30.773163 6712.3559 2.5752101e+08 0.061506051 0.042490673 94.997932 30.648154 6714.3547 2.4223879e+08 0.059670895 0.047330075 95.051718 30.522657 6716.3535 2.3204644e+08 0.058084950 0.048922097 95.105503 30.400118 6718.3524 2.2800652e+08 0.056078934 0.050361227 95.159289 30.279103 6720.3512 2.2296485e+08 0.055589943 0.050379071 95.216919 30.149436 6722.3501 2.1505010e+08 0.055386930 0.050172429 95.279666 30.008249 6724.3489 2.0326979e+08 0.052827797 0.047013041 95.335468 29.877483 6726.3478 1.9329672e+08 0.049935397 0.040954504 95.384770 29.756468 6728.3466 1.8464504e+08 0.049496948 0.040119335 95.435353 29.635453 6730.3454 1.7982185e+08 0.048073354 0.040852535 95.489138 29.514438 6732.3443 1.7353393e+08 0.046656553 0.043803589 95.542680 29.393424 6734.3431 1.7229382e+08 0.045931924 0.049332955 95.591983 29.272408 6736.3420 1.6748989e+08 0.047487455 0.051647802 95.641286 29.151392 6738.3408 1.5647610e+08 0.048516060 0.059197353 95.690588 29.030378 6740.3396 1.4946369e+08 0.047973807 0.064630582 95.739891 28.909364 6742.3385 1.4103367e+08 0.045438752 0.069435529 95.791846 28.788350 6744.3373 1.3987913e+08 0.041173276 0.078054324 95.845628 28.667335 6746.3362 1.3683080e+08 0.038845657 0.075078968 95.897793 28.546320 6748.3350 1.3096376e+08 0.036055842 0.068779388 95.947096 28.425305 6750.3338 1.2995814e+08 0.033137031 0.072574193 95.996398 28.304290 6752.3327 1.2383139e+08 0.030254823 0.073749491 96.045701 28.183275 6754.3315 1.1973967e+08 0.028852436 0.075680326 96.095003 28.062261 6756.3304 1.1591864e+08 0.026220189 0.075017010 96.144306 27.941246 6758.3292 1.1101220e+08 0.025950732 0.074401493 96.193609 27.820231 6760.3281 1.0909655e+08 0.026263027 0.076686861 96.244906 27.685749 6762.3269 1.0322058e+08 0.030180191 0.077523531 96.297197 27.544561 6764.3257 97637276. 0.032672778 0.079498891 96.347231 27.418608 6766.3246 95473311. 0.033570998 0.080447957 96.396534 27.297594 6768.3234 92451872. 0.030020941 0.082019778 96.445836 27.176579 6770.3223 90866023. 0.025752313 0.087661334 96.495139 27.055564 6772.3211 89378742. 0.021960205 0.092509403 96.544441 26.934549 6774.3199 86833475. 0.018136445 0.097357473 96.593744 26.813535 6776.3188 81919766. 0.014221956 0.10220554 96.642769 26.692521 6778.3176 79240506. 0.010345347 0.10705361 96.687589 26.571507 6780.3165 75211054. 0.0063691816 0.11190168 96.732409 26.450492 6782.3153 71223019. 0.0023184124 0.11674975 96.787770 26.312742 6784.3142 70860017. -0.0016079394 0.12159782 96.845280 26.171581 6786.3130 64272209. -0.0061466890 0.12644589 96.891141 26.048914 6788.3118 62809716. -0.010554846 0.13129396 96.935960 25.927899 6790.3107 60730482. -0.015488601 0.13614203 96.980782 25.809962 6792.3095 58136577. -0.021437402 0.14099010 97.025605 25.693430 6794.3084 57589047. -0.029932168 0.14583817 97.076215 25.565662 6796.3072 54339260. -0.064443740 0.15068624 97.133736 25.424475 6798.3060 50849940. -0.043986581 0.15553431 97.184356 25.294249 6800.3049 48050549. 0.011443687 0.16038238 97.229175 25.173234