# # 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 = 55.190176 km # Date (UTC) = 2014-01-12T10:21:45.356 # Date (julian) = 2456669.93177495 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.7919 6.6347639e+10 0.060709016 0.033426658 98.625420 38.939898 6506.0685 6.0726863e+10 0.070666080 0.034113163 98.704403 38.811242 6508.3452 5.4980558e+10 0.080781056 0.034799668 98.791185 38.673412 6510.6218 4.9792662e+10 0.091149771 0.035486172 98.873031 38.539696 6512.8984 4.5455762e+10 0.10191289 0.036172677 98.944499 38.414628 6515.1750 4.1740771e+10 0.11307009 0.036859182 99.017245 38.288495 6517.4516 3.8149958e+10 0.12447058 0.037545687 99.104027 38.150663 6519.7282 3.4714976e+10 0.13611822 0.038232191 99.188903 38.014419 6522.0048 3.1524216e+10 0.14802114 0.038918506 99.260378 37.889335 6524.2814 2.8959440e+10 0.15404969 0.039526928 99.331854 37.764250 6526.5580 2.6920823e+10 0.15940165 0.040253090 99.403323 37.643139 6528.8346 2.5011783e+10 0.16376365 0.042104582 99.474791 37.522539 6531.1112 2.3088754e+10 0.16725469 0.045390559 99.552869 37.390786 6533.3878 2.1118714e+10 0.17075829 0.047684401 99.634548 37.252954 6535.6644 1.9245135e+10 0.17138342 0.047936069 99.709197 37.123909 6537.9410 1.7649905e+10 0.17290169 0.049128883 99.780661 36.998844 6540.2176 1.6333480e+10 0.17352128 0.050956923 99.850119 36.875785 6542.4943 1.5218663e+10 0.17214269 0.051189884 99.917120 36.755185 6544.7709 1.4182201e+10 0.17097092 0.052269684 99.985062 36.633644 6547.0475 1.3263223e+10 0.16908899 0.053305415 100.05653 36.508578 6549.3241 1.2377560e+10 0.16669894 0.054296536 100.12799 36.383512 6551.6007 1.1405314e+10 0.16489655 0.055446599 100.20442 36.246039 6553.8773 1.0463698e+10 0.16256480 0.054894067 100.28087 36.108431 6556.1539 9.5609887e+09 0.16035428 0.053990500 100.34787 35.987831 6558.4305 8.8130150e+09 0.15833209 0.052872466 100.41487 35.867231 6560.7071 8.2128828e+09 0.15557380 0.051636762 100.48187 35.743173 6562.9837 7.6616161e+09 0.15321388 0.049943865 100.54887 35.618107 6565.2603 7.1761811e+09 0.15091082 0.048022801 100.61587 35.495432 6567.5369 6.7372772e+09 0.14900540 0.046163202 100.68287 35.374832 6569.8135 6.3217041e+09 0.14748998 0.044905373 100.75271 35.249122 6572.0901 5.8967644e+09 0.14590740 0.044178535 100.82928 35.111290 6574.3667 5.4849592e+09 0.14373063 0.042678858 100.90262 34.979277 6576.6434 5.1132025e+09 0.14165630 0.040630880 100.96962 34.858677 6578.9200 4.7928699e+09 0.13886435 0.037196890 101.03618 34.737635 6581.1966 4.5302742e+09 0.13646755 0.035537086 101.09871 34.612570 6583.4732 4.2851217e+09 0.13432520 0.034782167 101.16125 34.487504 6585.7498 4.0639936e+09 0.13183546 0.033371341 101.22763 34.366263 6588.0264 3.8588682e+09 0.12978093 0.033371119 101.29464 34.245645 6590.3030 3.6401742e+09 0.12700658 0.030498452 101.36442 34.114327 6592.5796 3.4184590e+09 0.12399698 0.027510557 101.43589 33.976496 6594.8562 3.2039130e+09 0.12105822 0.025702507 101.50144 33.850083 6597.1328 3.0194856e+09 0.11809387 0.025680816 101.56397 33.729483 6599.4094 2.8702504e+09 0.11651401 0.024954355 101.62650 33.608883 6601.6860 2.7357933e+09 0.11653248 0.027368770 101.68904 33.488283 6603.9626 2.6118019e+09 0.11530869 0.026093397 101.75157 33.366856 6606.2392 2.4955992e+09 0.11511913 0.027074055 101.81410 33.241790 6608.5158 2.3780926e+09 0.11269769 0.023718732 101.87664 33.116725 6610.7925 2.2485407e+09 0.10983761 0.024760151 101.94280 32.979579 6613.0691 2.1086667e+09 0.10897811 0.023598929 102.00916 32.841747 6615.3457 1.9849384e+09 0.10790729 0.023262167 102.07174 32.720929 6617.6223 1.8819266e+09 0.10705145 0.023645562 102.13428 32.600329 6619.8989 1.7940407e+09 0.10651610 0.024742799 102.19681 32.479729 6622.1755 1.7137836e+09 0.10526141 0.024711283 102.25934 32.359128 6624.4521 1.6323904e+09 0.10352296 0.025104314 102.31960 32.238528 6626.7287 1.5593579e+09 0.10169951 0.025662470 102.37766 32.117928 6629.0053 1.4888129e+09 0.10030267 0.026108145 102.43798 31.992661 6631.2819 1.4061951e+09 0.098542159 0.025959403 102.50434 31.854830 6633.5585 1.3276933e+09 0.097038654 0.026249765 102.56812 31.722376 6635.8351 1.2540525e+09 0.095359766 0.026525028 102.62618 31.601776 6638.1117 1.1898593e+09 0.094082016 0.025666774 102.68425 31.481176 6640.3883 1.1374650e+09 0.093810800 0.025223138 102.74231 31.360575 6642.6649 1.0850952e+09 0.093315208 0.025178907 102.80038 31.239974 6644.9416 1.0424970e+09 0.091951873 0.025445368 102.85846 31.119360 6647.2182 1.0009821e+09 0.090519524 0.026552643 102.91653 30.998743 6649.4948 9.5666333e+08 0.089499144 0.026951673 102.97955 30.867868 6651.7714 9.1027470e+08 0.089218619 0.027075313 103.04591 30.730036 6654.0480 8.6044306e+08 0.088766699 0.028015785 103.10699 30.603181 6656.3246 8.1663478e+08 0.087087191 0.028308308 103.16505 30.482581 6658.6012 7.8175207e+08 0.085588194 0.031127311 103.22312 30.361981 6660.8778 7.4976311e+08 0.084191254 0.032423878 103.28119 30.241381 6663.1544 7.2207837e+08 0.082909462 0.032440422 103.33854 30.120782 6665.4310 6.9476930e+08 0.082378612 0.027840896 103.39214 30.000182 6667.7076 6.6615527e+08 0.081736562 0.027363380 103.44574 29.879582 6669.9842 6.3507029e+08 0.081055787 0.027344830 103.50639 29.743120 6672.2608 6.0355866e+08 0.080742325 0.027030785 103.56765 29.605288 6674.5374 5.7147544e+08 0.079573787 0.029408159 103.62584 29.484027 6676.8140 5.4666040e+08 0.077149188 0.032238374 103.68390 29.363427 6679.0907 5.2768439e+08 0.076285844 0.030192857 103.73874 29.246056 6681.3673 5.0983755e+08 0.077176333 0.029939117 103.79234 29.129923 6683.6439 4.8978847e+08 0.077416740 0.032132179 103.84965 29.003287 6685.9205 4.6273014e+08 0.076849272 0.033677088 103.91091 28.865456 6688.1971 4.4140398e+08 0.074091357 0.033830684 103.96815 28.736673 6690.4737 4.2265228e+08 0.072143455 0.033061578 104.02174 28.616073 6692.7503 4.1303359e+08 0.070908582 0.031894054 104.07754 28.490540 6695.0269 4.0678555e+08 0.069976564 0.029854532 104.13880 28.352709 6697.3035 3.9454487e+08 0.069174526 0.030129675 104.19755 28.220518 6699.5801 3.8582515e+08 0.067576499 0.031055150 104.25115 28.099918 6701.8567 3.7111140e+08 0.065761963 0.032666503 104.30475 27.979714 6704.1333 3.5974574e+08 0.066068850 0.036243025 104.35835 27.863581 6706.4099 3.4704458e+08 0.066007361 0.039159867 104.41195 27.747448 6708.6865 3.2911710e+08 0.065570461 0.040791200 104.46772 27.612876 6710.9632 3.1479846e+08 0.063934413 0.040685020 104.52387 27.475043 6713.2398 2.9933173e+08 0.061853302 0.044553774 104.57775 27.352563 6715.5164 2.9068510e+08 0.059821211 0.047906710 104.63135 27.231964 6717.7930 2.8126199e+08 0.057664873 0.049825219 104.68994 27.103458 6720.0696 2.6968526e+08 0.056440257 0.050411705 104.75120 26.970731 6722.3462 2.5834266e+08 0.056278477 0.050177230 104.80406 26.846397 6724.6228 2.4824042e+08 0.052814655 0.044725959 104.85320 26.725779 6726.8994 2.4104543e+08 0.050217379 0.040959479 104.90553 26.597335 6729.1760 2.3215619e+08 0.049773080 0.040928116 104.96168 26.459504 6731.4526 2.2375155e+08 0.047881097 0.042650804 105.01657 26.332429 6733.7292 2.1438873e+08 0.046692908 0.047883443 105.07017 26.216295 6736.0058 2.0883076e+08 0.048145447 0.050377026 105.12443 26.094587 6738.2824 2.0573750e+08 0.049320877 0.058876004 105.18058 25.956756 6740.5590 2.0036460e+08 0.048660094 0.065005382 105.23464 25.825392 6742.8356 1.9139496e+08 0.045352111 0.070646957 105.28378 25.709259 6745.1123 1.8281261e+08 0.041837028 0.078614076 105.33333 25.591841 6747.3889 1.7573151e+08 0.037373473 0.067227292 105.38948 25.454009 6749.6655 1.6836915e+08 0.035835273 0.072095728 105.44563 25.316690 6751.9421 1.5645824e+08 0.032584992 0.074109984 105.50179 25.183964 6754.2187 1.4472011e+08 0.031460570 0.075861809 105.55695 25.052951 6756.4953 1.3717947e+08 0.028881279 0.075441350 105.60608 24.932351 6758.7719 1.3071842e+08 0.029337566 0.075337589 105.65522 24.811750 6761.0485 1.2838768e+08 0.029956822 0.077972232 105.71068 24.680206 6763.3251 1.2085772e+08 0.035545965 0.077427879 105.76683 24.547480 6765.6017 1.1453708e+08 0.037958530 0.079641038 105.81817 24.414754 6767.8783 1.0794721e+08 0.035853171 0.080992277 105.86922 24.282028 6770.1549 1.0164061e+08 0.031175716 0.087255462 105.91839 24.161243 6772.4315 96179193. 0.027232615 0.092777235 105.96752 24.040643 6774.7081 94128718. 0.023213746 0.098299007 106.02189 23.910997 6776.9847 92722686. 0.019183088 0.10382078 106.07804 23.778271 6779.2614 88645064. 0.015223742 0.10934255 106.13017 23.641526 6781.5380 84236966. 0.011288903 0.11486432 106.18123 23.503694 6783.8146 81716729. 0.0072996929 0.12038610 106.23650 23.370090 6786.0912 80194138. 0.0032899028 0.12590787 106.29266 23.237363 6788.3678 77071569. -0.00066224752 0.13142964 106.34437 23.104637 6790.6444 72470130. -0.0045515687 0.13695141 106.39542 22.971910 6792.9210 66863516. -0.0083817004 0.14247318 106.44647 22.839185 6795.1976 64689309. -0.012315766 0.14799496 106.49752 22.706459 6797.4742 64636864. -0.016318423 0.15351673 106.55342 22.568876 6799.7508 62871370. -0.020214735 0.15903850 106.60958 22.431045 6802.0274 59096233. -0.023966578 0.16456027 106.65433 22.314747 6804.3040 55411445. -0.027649450 0.17008205 106.69899 22.198613 6806.5806 52319860. -0.031283732 0.17560382 106.74847 22.069974 6808.8572 51084928. -0.034926777 0.18112559 106.79952 21.937248 6811.1338 52013784. -0.038504923 0.18664736 106.85733 21.786938 6813.4105 52158513. -0.041980313 0.19216913 106.91591 21.634646 6815.6871 48879482. -0.040753533 0.19769091 106.96696 21.501919 6817.9637 48570746. -0.049719365 0.20321268 107.01800 21.369193 6820.2403 46794267. -0.063458865 0.20873445 107.06905 21.236466