# # 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 = 42.695951 km # Date (UTC) = 2016-12-05T09:26:09.733 # Date (julian) = 2457727.89316821 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.1345 4.7503194e+10 0.10666160 0.035640800 115.29609 25.371296 6513.1838 4.3762446e+10 0.11705382 0.036258760 115.33898 25.274801 6515.2331 3.9937508e+10 0.12750455 0.036876720 115.38452 25.175650 6517.2824 3.6489261e+10 0.13812476 0.037494680 115.43098 25.075581 6519.3317 3.3241253e+10 0.14885635 0.038112640 115.47744 24.975512 6521.3810 3.0122899e+10 0.15966532 0.038730600 115.52560 24.863607 6523.4303 2.7085199e+10 0.16643130 0.039285766 115.57385 24.751012 6525.4796 2.4203610e+10 0.17127489 0.039727477 115.61965 24.645793 6527.5289 2.1835807e+10 0.17559238 0.041100466 115.66253 24.549298 6529.5782 1.9946247e+10 0.17867194 0.043156817 115.70542 24.452802 6531.6275 1.8298950e+10 0.18097311 0.046142017 115.74595 24.353949 6533.6768 1.6746687e+10 0.18221445 0.047807207 115.78526 24.253880 6535.7261 1.5272950e+10 0.18165504 0.047909319 115.82458 24.153811 6537.7754 1.3961911e+10 0.18202039 0.049050789 115.86697 24.053743 6539.8247 1.2888851e+10 0.18135744 0.050641892 115.90985 23.953674 6541.8740 1.1895909e+10 0.17867287 0.051043103 115.95308 23.853063 6543.9233 1.0934506e+10 0.17568177 0.051624212 116.00133 23.744505 6545.9726 9.9551043e+09 0.17227040 0.052464280 116.04958 23.635946 6548.0219 9.0296261e+09 0.16974921 0.053674178 116.09474 23.532277 6550.0712 8.2543115e+09 0.16710933 0.055003180 116.13763 23.432195 6552.1205 7.5977043e+09 0.16442668 0.055556445 116.18053 23.332113 6554.1698 7.0215835e+09 0.16158306 0.054835943 116.22063 23.234825 6556.2191 6.5204973e+09 0.15898646 0.053980920 116.25994 23.138331 6558.2684 6.0728806e+09 0.15660988 0.053010632 116.29926 23.041837 6560.3177 5.6992763e+09 0.15371380 0.051987905 116.34207 22.941836 6562.3669 5.3824827e+09 0.15060759 0.050530738 116.38496 22.841767 6564.4162 5.0765550e+09 0.14741256 0.048582955 116.42809 22.740145 6566.4655 4.7697323e+09 0.14478780 0.046919529 116.47232 22.631586 6568.5148 4.4297192e+09 0.14264095 0.045298404 116.51654 22.523028 6570.5641 4.1033979e+09 0.14082731 0.044683826 116.55735 22.422854 6572.6134 3.8340251e+09 0.13867311 0.043878860 116.59667 22.326346 6574.6627 3.6123128e+09 0.13596194 0.042536700 116.63599 22.229839 6576.7120 3.4111470e+09 0.13308822 0.040551840 116.67851 22.130133 6578.7613 3.2240809e+09 0.12972364 0.037447403 116.72140 22.030065 6580.8106 3.0394274e+09 0.12672841 0.035771628 116.76442 21.929148 6582.8599 2.8419223e+09 0.12426751 0.035059788 116.80865 21.820589 6584.9092 2.6466155e+09 0.12166531 0.034020231 116.85288 21.712031 6586.9585 2.4510166e+09 0.11903368 0.033158906 116.89409 21.610865 6589.0078 2.2906260e+09 0.11629866 0.033030501 116.93341 21.514370 6591.0571 2.1584729e+09 0.11297380 0.029137482 116.97272 21.417875 6593.1064 2.0380298e+09 0.11008882 0.027003307 117.01203 21.321380 6595.1557 1.9368323e+09 0.10704003 0.025639717 117.05134 21.224885 6597.2050 1.8414793e+09 0.10430754 0.025658041 117.09073 21.128122 6599.2543 1.7405364e+09 0.10273775 0.024945024 117.13497 21.015526 6601.3036 1.6326708e+09 0.10281729 0.027188658 117.17920 20.902931 6603.3529 1.5219428e+09 0.10192477 0.026454372 117.22083 20.798867 6605.4022 1.4293225e+09 0.10152014 0.027002433 117.26014 20.702372 6607.4515 1.3580474e+09 0.10001232 0.024815516 117.29945 20.605877 6609.5008 1.2843538e+09 0.097239959 0.023854682 117.33877 20.509382 6611.5501 1.2215627e+09 0.094745890 0.024607680 117.37808 20.412887 6613.5994 1.1564330e+09 0.093887608 0.023793496 117.41739 20.316392 6615.6487 1.0933338e+09 0.092577557 0.023271489 117.45754 20.208634 6617.6979 1.0382257e+09 0.091783603 0.023670652 117.49775 20.100076 6619.7472 9.7041102e+08 0.091263286 0.024706212 117.53755 19.996906 6621.7965 9.1600680e+08 0.090208370 0.024825429 117.57687 19.900410 6623.8458 8.6962348e+08 0.088399896 0.024805196 117.61618 19.803915 6625.8951 8.2569250e+08 0.087310392 0.026465769 117.65550 19.707412 6627.9444 7.9062706e+08 0.085507721 0.025681630 117.69481 19.610905 6629.9937 7.4978852e+08 0.084160841 0.025929436 117.73413 19.514397 6632.0430 7.1076438e+08 0.082359191 0.026037504 117.77421 19.407636 6634.0923 6.7391801e+08 0.080827137 0.026333577 117.81441 19.299078 6636.1416 6.3530997e+08 0.079302927 0.026494757 117.85429 19.194906 6638.1909 6.0246917e+08 0.078233270 0.025663325 117.89361 19.098411 6640.2402 5.7304984e+08 0.078242258 0.025241262 117.93292 19.001916 6642.2895 5.4533135e+08 0.078317426 0.025163543 117.97274 18.898598 6644.3388 5.1355347e+08 0.077605205 0.025380223 118.01295 18.790040 6646.3881 4.8133430e+08 0.076927606 0.026121040 118.05309 18.682429 6648.4374 4.5257811e+08 0.076191036 0.027257078 118.09240 18.585934 6650.4867 4.3192047e+08 0.075842327 0.026366654 118.13171 18.489439 6652.5360 4.1640387e+08 0.075517266 0.027397993 118.17128 18.389557 6654.5853 3.9638954e+08 0.074731219 0.027786889 118.21149 18.280983 6656.6346 3.7721777e+08 0.073054618 0.028580385 118.25170 18.172408 6658.6839 3.5992633e+08 0.071682562 0.031273947 118.28836 18.076256 6660.7332 3.4443892e+08 0.070450257 0.032292416 118.32410 17.983335 6662.7825 3.3177913e+08 0.069260235 0.032605260 118.35986 17.890365 6664.8318 3.1162068e+08 0.068564654 0.029162693 118.40003 17.781926 6666.8811 2.9726170e+08 0.068206247 0.027080281 118.44023 17.673368 6668.9304 2.8329334e+08 0.066945375 0.028294075 118.47999 17.570943 6670.9797 2.6985231e+08 0.066952610 0.026874774 118.51930 17.474448 6673.0290 2.5722264e+08 0.066479313 0.027502515 118.55861 17.377953 6675.0782 2.4046853e+08 0.064832897 0.029948229 118.59856 17.272889 6677.1275 2.3224929e+08 0.062640503 0.032176902 118.63877 17.164331 6679.1768 2.2643292e+08 0.061953618 0.030121639 118.67797 17.059262 6681.2261 2.1952323e+08 0.062720022 0.029830847 118.71371 16.966341 6683.2754 2.0668011e+08 0.063001630 0.031592230 118.74945 16.873420 6685.3247 1.9382267e+08 0.062554591 0.033047831 118.78709 16.773845 6687.3740 1.8063682e+08 0.060556477 0.034134302 118.82731 16.665269 6689.4233 1.7401530e+08 0.058149696 0.033634967 118.86752 16.556694 6691.4726 1.6668270e+08 0.057226092 0.032889756 118.90773 16.448135 6693.5219 1.5661677e+08 0.056326440 0.031425040 118.94794 16.339578 6695.5712 1.4862098e+08 0.056012147 0.029754549 118.98613 16.238075 6697.6205 1.4232078e+08 0.055375942 0.030169792 119.02186 16.145154 6699.6698 1.3629102e+08 0.054025209 0.030972395 119.05760 16.052233 6701.7191 1.3091446e+08 0.052427577 0.032464569 119.09363 15.949099 6703.7684 1.2729573e+08 0.052767735 0.035598006 119.12982 15.840541 6705.8177 1.2068901e+08 0.052921087 0.038122298 119.16668 15.732650 6707.8670 1.1589382e+08 0.052793658 0.040062631 119.20688 15.628111 6709.9163 1.1223320e+08 0.051997841 0.040549741 119.24709 15.523573 6711.9656 1.0829295e+08 0.050224650 0.041790800 119.28426 15.424495 6714.0149 1.0529635e+08 0.048483737 0.047304527 119.32000 15.328001 6716.0642 1.0495539e+08 0.047271119 0.048495882 119.35574 15.231506 6718.1135 1.0203694e+08 0.045564125 0.049989135 119.39542 15.127914 6720.1628 98351594. 0.044935151 0.050400907 119.43563 15.023361 6722.2121 89527641. 0.044902513 0.050343039 119.47426 14.918813 6724.2614 78515945. 0.042298775 0.047744143 119.51044 14.814276 6726.3107 75621425. 0.039233777 0.040954169 119.54663 14.709738 6728.3600 78936941. 0.038986783 0.040138270 119.58646 14.601554 6730.4092 79101512. 0.037551580 0.040940032 119.62667 14.492996 6732.4585 74688122. 0.035723997 0.043824626 119.66519 14.386125 6734.5078 67374883. 0.034128239 0.049323044 119.70137 14.281587 6736.5571 58232337. 0.033217151 0.052461297 119.73756 14.177049 6738.6064 51163049. 0.028029326 0.060659788 119.77749 14.072511 6740.6557 46284588. -0.0064808682 0.065170564 119.81770 13.967973 6742.7050 44197323. 0.014494238 0.070328681 119.85612 13.861645 6744.7543 49147144. 0.067777739 0.078376861 119.89230 13.753087