# # 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 = 44.765303 km # Date (UTC) = 2011-01-11T08:03:24.738 # Date (julian) = 2455572.83570299 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.1205 1.1460764e+11 0.083175689 0.034430374 128.20447 44.774202 6509.7699 9.1648100e+10 0.095063380 0.035229286 128.32139 44.622508 6512.4192 7.4883682e+10 0.10717896 0.036028199 128.43054 44.482161 6515.0686 6.2787510e+10 0.11963831 0.036827112 128.53828 44.343228 6517.7180 5.3968172e+10 0.13254713 0.037626025 128.64225 44.208078 6520.3674 4.6730744e+10 0.14580324 0.038424937 128.74803 44.071110 6523.0168 4.0800333e+10 0.15665406 0.039183265 128.85720 43.930742 6525.6661 3.5891638e+10 0.16242311 0.039706191 128.96416 43.792592 6528.3155 3.1732377e+10 0.16773249 0.041692777 129.06812 43.657444 6530.9649 2.7958280e+10 0.17098443 0.045179519 129.17654 43.509646 6533.6143 2.4485473e+10 0.17441126 0.047780630 129.28942 43.349245 6536.2636 2.1432560e+10 0.17470448 0.048026387 129.39500 43.209493 6538.9130 1.8884013e+10 0.17589189 0.049601273 129.49896 43.074345 6541.5624 1.6882057e+10 0.17577360 0.051144149 129.59828 42.934550 6544.2118 1.5174359e+10 0.17465531 0.051816142 129.69704 42.794203 6546.8612 1.3716110e+10 0.17332302 0.053173114 129.79580 42.653856 6549.5105 1.2444558e+10 0.17068022 0.054486549 129.89457 42.513749 6552.1599 1.1280015e+10 0.16699323 0.055546518 129.99333 42.378599 6554.8093 1.0248884e+10 0.16205829 0.054849363 130.09210 42.242813 6557.4587 9.3236625e+09 0.15707377 0.053578617 130.19086 42.102468 6560.1080 8.5215498e+09 0.15263810 0.052176899 130.28859 41.963155 6562.7574 7.8577432e+09 0.14869325 0.050159195 130.38215 41.828005 6565.4068 7.1918652e+09 0.14528173 0.047856478 130.47939 41.685915 6568.0562 6.5426826e+09 0.14269787 0.045720028 130.58633 41.525515 6570.7055 5.9370140e+09 0.14045222 0.044625247 130.68535 41.380053 6573.3549 5.4022779e+09 0.13801718 0.043372662 130.77891 41.244905 6576.0043 4.9807234e+09 0.13498442 0.041366441 130.87249 41.106272 6578.6537 4.6126555e+09 0.13171789 0.037617377 130.96607 40.965903 6581.3031 4.2701672e+09 0.12859937 0.035504839 131.05964 40.829419 6583.9524 3.9568672e+09 0.12574128 0.034539586 131.15320 40.694269 6586.6018 3.6642948e+09 0.12305559 0.033163517 131.24249 40.554857 6589.2512 3.3963142e+09 0.12029276 0.032547638 131.33086 40.414511 6591.9006 3.1533265e+09 0.11683704 0.028185724 131.42389 40.278824 6594.5499 2.9262686e+09 0.11332683 0.025870630 131.51746 40.143675 6597.1993 2.7183702e+09 0.10952036 0.025659828 131.60597 40.008527 6599.8487 2.5239497e+09 0.10728648 0.024980775 131.69433 39.873124 6602.4981 2.3451872e+09 0.10559458 0.027091594 131.78270 39.732777 6605.1475 2.1809983e+09 0.10354581 0.026788747 131.87041 39.593080 6607.7968 2.0278671e+09 0.10044077 0.024133550 131.95358 39.457931 6610.4462 1.8931736e+09 0.095617773 0.024429323 132.03780 39.321735 6613.0956 1.7754543e+09 0.092812696 0.023608662 132.12617 39.181389 6615.7450 1.6570964e+09 0.090539709 0.023274452 132.21639 39.037126 6618.3943 1.5332416e+09 0.089648774 0.024068572 132.31144 38.882666 6621.0437 1.4081870e+09 0.089127863 0.025074955 132.40252 38.736593 6623.6931 1.2985324e+09 0.087661622 0.024748608 132.49089 38.596245 6626.3425 1.2079624e+09 0.086450900 0.026154558 132.57577 38.459371 6628.9919 1.1288086e+09 0.085082295 0.026105797 132.65895 38.324203 6631.6412 1.0601376e+09 0.083470667 0.025995902 132.74212 38.185166 6634.2906 9.9228060e+08 0.082104749 0.026348041 132.82529 38.044819 6636.9400 9.3108276e+08 0.080705504 0.026184718 132.90846 37.908751 6639.5894 8.7183612e+08 0.080272549 0.025417423 132.99163 37.773601 6642.2387 8.1392356e+08 0.080794909 0.025161466 133.07012 37.638452 6644.8881 7.6556297e+08 0.079856214 0.025439592 133.14809 37.503304 6647.5375 7.1954104e+08 0.078647335 0.026720774 133.23113 37.363084 6650.1869 6.7455703e+08 0.077851042 0.026298017 133.31403 37.223006 6652.8363 6.3425391e+08 0.077376431 0.027480607 133.39201 37.087858 6655.4856 5.9609209e+08 0.075794584 0.027810879 133.46998 36.952710 6658.1350 5.6197175e+08 0.073878753 0.030300514 133.54795 36.817560 6660.7844 5.2832454e+08 0.072088345 0.032338964 133.62819 36.677256 6663.4338 4.9240997e+08 0.070549004 0.032363007 133.71730 36.516855 6666.0831 4.5787389e+08 0.070246127 0.026924796 133.80061 36.369607 6668.7325 4.2733565e+08 0.069025001 0.028118998 133.87858 36.234460 6671.3819 4.0021404e+08 0.068935939 0.026870791 133.95655 36.099311 6674.0313 3.7479451e+08 0.068191399 0.028981169 134.03452 35.964161 6676.6806 3.4922664e+08 0.065820826 0.032152397 134.11250 35.825499 6679.3300 3.2621117e+08 0.065575617 0.029995053 134.19049 35.685133 6681.9794 3.0856597e+08 0.067066097 0.030408741 134.26456 35.548678 6684.6288 2.9210298e+08 0.067585860 0.032686000 134.33734 35.413528 6687.2782 2.7783249e+08 0.065976982 0.034187769 134.41440 35.278380 6689.9275 2.6189053e+08 0.063672854 0.033181094 134.49237 35.143231 6692.5769 2.4302897e+08 0.062842351 0.032095395 134.57503 34.990661 6695.2263 2.2587061e+08 0.062460043 0.029817907 134.65592 34.839289 6697.8757 2.0962511e+08 0.061929145 0.030202083 134.72869 34.698943 6700.5250 2.0084396e+08 0.060007012 0.031057159 134.80147 34.560129 6703.1744 1.9261973e+08 0.059376548 0.034111696 134.87424 34.424982 6705.8238 1.8342721e+08 0.059492112 0.038133156 134.94701 34.289834 6708.4732 1.7328743e+08 0.059010019 0.040558852 135.01978 34.154686 6711.1226 1.6377932e+08 0.057068076 0.040831667 135.09455 34.010898 6713.7719 1.5497037e+08 0.054404085 0.046478538 135.17178 33.856437 6716.4213 1.4886389e+08 0.052048786 0.049021911 135.24561 33.716733 6719.0707 1.4036297e+08 0.049128377 0.051302680 135.31838 33.581585 6721.7201 1.3396367e+08 0.049305492 0.050520858 135.39115 33.446436 6724.3694 1.2917765e+08 0.046023721 0.046841579 135.46392 33.311286 6727.0188 1.1957299e+08 0.042371898 0.040935313 135.54078 33.152995 6729.6682 1.1407148e+08 0.041246811 0.040600057 135.61576 32.998483 6732.3176 1.0519388e+08 0.038962448 0.043798674 135.68333 32.863335 6734.9670 97526315. 0.038495328 0.049295421 135.75090 32.728186 6737.6163 93256251. 0.040162590 0.056098900 135.81848 32.593036 6740.2657 87591985. 0.039672618 0.064504277 135.89207 32.450441 6742.9151 82421237. 0.035609650 0.070840529 135.97524 32.295983 6745.5645 77129595. 0.031685537 0.078804182 136.04381 32.155072 6748.2138 71364292. 0.026891881 0.068141919 136.10619 32.019903 6750.8632 69711806. 0.023634360 0.073478110 136.18014 31.869711 6753.5126 71359880. 0.020301101 0.074636140 136.25645 31.717096 6756.1620 67133025. 0.016386498 0.074583688 136.32403 31.581947 6758.8113 63001566. 0.014501972 0.075421029 136.39326 31.443483 6761.4607 59653410. 0.012510792 0.078006290 136.47049 31.289023 6764.1101 55700729. -0.0071642270 0.079488560 136.54046 31.143995 6766.7595 54894408. 0.014992109 0.081431710 136.60284 31.008847 6769.4089 49425289. 0.056123059 0.085445926 136.67360 30.862797