# # 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 = 42.458750 km # Date (UTC) = 2016-01-09T09:41:19.344 # Date (julian) = 2457396.90369611 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.2786 1.7699429e+11 0.026020307 0.030557933 -24.301846 50.699402 6496.0961 1.3411204e+11 0.031915427 0.031106005 -24.398128 50.610252 6497.9137 1.0875993e+11 0.037502906 0.031654078 -24.486149 50.528751 6499.7312 9.2983703e+10 0.043070528 0.032202150 -24.571742 50.449499 6501.5487 8.2643511e+10 0.048918777 0.032750223 -24.657335 50.370246 6503.3663 7.5223486e+10 0.055255207 0.033298295 -24.747333 50.284873 6505.1838 6.8438157e+10 0.062020101 0.033846368 -24.840048 50.195724 6507.0013 6.2153648e+10 0.069268904 0.034394440 -24.932763 50.106574 6508.8189 5.6563710e+10 0.077108668 0.034942513 -25.025478 50.017425 6510.6364 5.1808947e+10 0.085676363 0.035490585 -25.118193 49.928276 6512.4539 4.7691485e+10 0.095014350 0.036038658 -25.210907 49.839127 6514.2715 4.3747393e+10 0.10496938 0.036586730 -25.303622 49.749978 6516.0890 4.0027113e+10 0.11554889 0.037134802 -25.396338 49.660828 6517.9065 3.6655895e+10 0.12674132 0.037682875 -25.488320 49.571679 6519.7241 3.3607395e+10 0.13846248 0.038230947 -25.577469 49.482530 6521.5416 3.0805546e+10 0.15058095 0.038779020 -25.666619 49.393381 6523.3591 2.8336436e+10 0.15911299 0.039268122 -25.751793 49.308207 6525.1767 2.6218417e+10 0.16694147 0.039762053 -25.831035 49.228964 6526.9942 2.4455827e+10 0.17293707 0.040710383 -25.910278 49.149721 6528.8117 2.2860446e+10 0.17613386 0.042086428 -25.991961 49.068038 6530.6293 2.1336216e+10 0.17874910 0.044709652 -26.081110 48.978889 6532.4468 1.9820467e+10 0.18059289 0.047057442 -26.170259 48.889740 6534.2643 1.8372683e+10 0.18017989 0.048018500 -26.257838 48.799009 6536.0819 1.7043775e+10 0.17848988 0.047863746 -26.343433 48.706281 6537.8994 1.5783088e+10 0.17883401 0.049109251 -26.429029 48.613552 6539.7169 1.4647752e+10 0.17811535 0.050511453 -26.516893 48.523108 6541.5345 1.3529477e+10 0.17604668 0.051153207 -26.606042 48.433959 6543.3520 1.2501723e+10 0.17439540 0.051474277 -26.695192 48.344809 6545.1695 1.1603455e+10 0.17319552 0.052457086 -26.770793 48.263921 6546.9871 1.0894271e+10 0.17156702 0.053276721 -26.843697 48.184679 6548.8046 1.0296703e+10 0.16943230 0.053907926 -26.916600 48.105437 6550.6221 9.7139061e+09 0.16808985 0.055141136 -26.998114 48.019467 6552.4397 9.0851341e+09 0.16674154 0.055476103 -27.083697 47.930318 6554.2572 8.4328387e+09 0.16449214 0.054837777 -27.169280 47.841169 6556.0747 7.8407266e+09 0.16217436 0.054002138 -27.251744 47.752020 6557.8923 7.2856872e+09 0.16039070 0.053306832 -27.333761 47.662870 6559.7098 6.7760037e+09 0.15776850 0.052307065 -27.415778 47.573470 6561.5273 6.2924295e+09 0.15464543 0.051112822 -27.497795 47.480754 6563.3449 5.8448835e+09 0.15167756 0.049529435 -27.579812 47.388038 6565.1624 5.4598771e+09 0.14891638 0.048133989 -27.659406 47.298905 6566.9799 5.1440567e+09 0.14608369 0.046628538 -27.732320 47.219652 6568.7975 4.8953675e+09 0.14335577 0.045038599 -27.805233 47.140400 6570.6150 4.6719830e+09 0.14160168 0.044662754 -27.878764 47.060041 6572.4325 4.4465988e+09 0.13989089 0.043982454 -27.957215 46.970892 6574.2501 4.2133557e+09 0.13767025 0.042734898 -28.035666 46.881743 6576.0676 3.9651280e+09 0.13565063 0.041293581 -28.114117 46.792594 6577.8851 3.7311080e+09 0.13370926 0.038830037 -28.192568 46.703444 6579.7027 3.5073560e+09 0.13146690 0.036684209 -28.271020 46.614295 6581.5202 3.3001073e+09 0.12929500 0.035439084 -28.349471 46.523352 6583.3377 3.1017584e+09 0.12753142 0.034850719 -28.427923 46.430638 6585.1553 2.9099056e+09 0.12578588 0.033846637 -28.506374 46.337923 6586.9728 2.7458489e+09 0.12386526 0.033158721 -28.578733 46.254623 6588.7903 2.6140117e+09 0.12184835 0.033115995 -28.648466 46.175381 6590.6079 2.5112382e+09 0.11936518 0.029931330 -28.718200 46.096138 6592.4254 2.4054707e+09 0.11692450 0.027660328 -28.790735 46.011507 6594.2429 2.2925313e+09 0.11433619 0.026039162 -28.865620 45.922358 6596.0605 2.1787241e+09 0.11138629 0.025726999 -28.940505 45.833209 6597.8780 2.0652777e+09 0.10929747 0.025445662 -29.018028 45.744059 6599.6955 1.9538056e+09 0.10783168 0.024971563 -29.096480 45.654910 6601.5131 1.8452031e+09 0.10695031 0.027287319 -29.174932 45.565761 6603.3306 1.7423558e+09 0.10529487 0.026467555 -29.246722 45.473262 6605.1481 1.6440437e+09 0.10415766 0.026789322 -29.318051 45.380533 6606.9657 1.5549115e+09 0.10251339 0.025768676 -29.388754 45.289577 6608.7832 1.4727689e+09 0.099592144 0.023711663 -29.455318 45.210334 6610.6007 1.4101022e+09 0.096987180 0.024576974 -29.521882 45.131092 6612.4183 1.3595933e+09 0.095600020 0.024008232 -29.588446 45.051849 6614.2358 1.3026571e+09 0.094780914 0.023778029 -29.659655 44.962931 6616.0533 1.2418375e+09 0.093533336 0.023290671 -29.730974 44.873782 6617.8709 1.1789114e+09 0.093189783 0.023727986 -29.802908 44.784019 6619.6884 1.1190818e+09 0.092692581 0.024692016 -29.877793 44.691304 6621.5059 1.0701709e+09 0.091797253 0.024921749 -29.952678 44.598590 6623.3235 1.0154046e+09 0.090494291 0.024611669 -30.026251 44.507188 6625.1410 9.5586885e+08 0.089561720 0.025565873 -30.097571 44.418038 6626.9585 9.0115565e+08 0.087799763 0.025369628 -30.168890 44.328889 6628.7761 8.5572398e+08 0.086957626 0.026018191 -30.233954 44.245325 6630.5936 8.2412616e+08 0.085529303 0.025929765 -30.294178 44.166083 6632.4111 7.9414550e+08 0.084132902 0.026081645 -30.354402 44.086840 6634.2287 7.6401095e+08 0.082712621 0.026343524 -30.419163 44.002089 6636.0462 7.2748706e+08 0.081340122 0.026531806 -30.490482 43.909373 6637.8637 6.9066788e+08 0.080438969 0.025738375 -30.561802 43.816657 6639.6813 6.5853715e+08 0.079959930 0.025384570 -30.630972 43.726089 6641.4988 6.2204923e+08 0.080164724 0.025149994 -30.698736 43.636926 6643.3163 5.9306710e+08 0.079448686 0.025240383 -30.766500 43.547763 6645.1339 5.6756599e+08 0.078447852 0.025514403 -30.834255 43.458611 6646.9514 5.4051440e+08 0.077286213 0.026412631 -30.902007 43.369462 6648.7689 5.2028976e+08 0.076206931 0.027479021 -30.969760 43.280313 6650.5865 4.9420325e+08 0.076008558 0.026389499 -31.037514 43.187611 6652.4040 4.7036069e+08 0.075830921 0.027361682 -31.105267 43.094897 6654.2215 4.4903977e+08 0.075323740 0.027941843 -31.173021 43.002868 6656.0391 4.2632466e+08 0.074000314 0.028057721 -31.240774 42.913719 6657.8566 4.0808583e+08 0.073002270 0.029894759 -31.308528 42.824569 6659.6742 3.9190309e+08 0.071885681 0.031693970 -31.372131 42.739263 6661.4917 3.8012962e+08 0.070757847 0.032785375 -31.429186 42.660020 6663.3092 3.6681437e+08 0.069859976 0.032397521 -31.486241 42.580777 6665.1268 3.5449067e+08 0.069615376 0.028339444 -31.545789 42.498395 6666.9443 3.4090883e+08 0.069360043 0.027092601 -31.613542 42.405679 6668.7618 3.2962744e+08 0.068393659 0.028144930 -31.681295 42.312964 6670.5794 3.1723678e+08 0.068480422 0.027060228 -31.747519 42.221777 6672.3969 3.0129548e+08 0.068321618 0.027109642 -31.811706 42.132628 6674.2144 2.8811661e+08 0.067533860 0.029135668 -31.875894 42.043479 6676.0320 2.7593204e+08 0.065619544 0.031734318 -31.940088 41.954321 6677.8495 2.6339081e+08 0.064829987 0.031150584 -32.004285 41.865159 6679.6670 2.5478579e+08 0.064773820 0.029716576 -32.068483 41.775996 6681.4846 2.4356934e+08 0.065558470 0.030029101 -32.129746 41.683919 6683.3021 2.3478123e+08 0.065992519 0.031631294 -32.190366 41.591205 6685.1196 2.2807387e+08 0.065812361 0.032831187 -32.251045 41.498548 6686.9372 2.1640160e+08 0.064391943 0.034306336 -32.315233 41.409399 6688.7547 2.1021876e+08 0.062055861 0.033959398 -32.379421 41.320249 6690.5722 2.0148904e+08 0.061208444 0.033050286 -32.442852 41.231100 6692.3898 1.9291647e+08 0.060556641 0.032312729 -32.503473 41.141951 6694.2073 1.8125687e+08 0.059987616 0.030970499 -32.564094 41.052801 6696.0248 1.6864392e+08 0.060139217 0.029686099 -32.624715 40.962199 6697.8424 1.6208698e+08 0.059643258 0.030197867 -32.685337 40.869484 6699.6599 1.5320048e+08 0.058535089 0.030981542 -32.745959 40.776770 6701.4774 1.5296596e+08 0.057091135 0.032109963 -32.806581 40.686207 6703.2950 1.4774749e+08 0.057288515 0.034413313 -32.867201 40.597058 6705.1125 1.4011865e+08 0.057603525 0.036868593 -32.927822 40.507909 6706.9300 1.3345997e+08 0.057434105 0.040065040 -32.988444 40.418759 6708.7476 1.2576809e+08 0.057181797 0.040857643 -33.049067 40.329609 6710.5651 1.2061777e+08 0.056069715 0.040607105 -33.109689 40.240460 6712.3826 1.1394436e+08 0.054493690 0.042540367 -33.170310 40.147762 6714.2002 1.0956215e+08 0.052826763 0.047318456 -33.230931 40.055046 6716.0177 1.0230526e+08 0.051609781 0.048427420 -33.290872 39.963010 6717.8352 97367464. 0.050043323 0.049822606 -33.347927 39.873861 6719.6528 92424359. 0.048914955 0.050749669 -33.404983 39.784712 6721.4703 86796051. 0.049395477 0.050445601 -33.463419 39.695558 6723.2878 86130597. 0.048343718 0.049529471 -33.524050 39.606396 6725.1054 82172859. 0.044700698 0.041510206 -33.584682 39.517233 6726.9229 78971886. 0.043469957 0.040959691 -33.643230 39.428078 6728.7404 76933541. 0.043459446 0.040677530 -33.700285 39.338929 6730.5580 75830067. 0.042209115 0.041143937 -33.757341 39.249780 6732.3755 79032118. 0.041090658 0.043809337 -33.814396 39.157856 6734.1930 75169141. 0.040651973 0.049341985 -33.871452 39.065141 6736.0106 71992817. 0.042429893 0.050394942 -33.928508 38.972427 6737.8281 67491499. 0.043820864 0.056773489 -33.985563 38.883184 6739.6456 65028149. 0.044124068 0.063616681 -34.042619 38.794035 6741.4632 64091276. 0.042958239 0.067079663 -34.100365 38.702726 6743.2807 63112789. 0.039590087 0.072941021 -34.161498 38.600839 6745.0982 58600782. 0.037577314 0.078608182 -34.222631 38.498952 6746.9158 53741778. 0.033164299 0.068340484 -34.280845 38.406184 6748.7333 49756005. 0.032368005 0.070874810 -34.337900 38.317035