# # 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 = 44.521550 km # Date (UTC) = 2016-12-26T09:30:28.780 # Date (julian) = 2457748.89616643 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.8801 6.3820032e+10 0.099893025 0.035262540 114.28759 28.824811 6511.9806 5.7525311e+10 0.11028508 0.035895931 114.33888 28.722244 6514.0811 5.1337518e+10 0.12072914 0.036529322 114.38729 28.622545 6516.1816 4.6065105e+10 0.13136702 0.037162714 114.43492 28.523640 6518.2820 4.1719157e+10 0.14223605 0.037796105 114.48273 28.424735 6520.3825 3.7855244e+10 0.15325888 0.038429496 114.53402 28.325831 6522.4830 3.4315125e+10 0.16306996 0.039043721 114.58530 28.226927 6524.5834 3.1156202e+10 0.16874916 0.039634228 114.63540 28.128018 6526.6839 2.8219768e+10 0.17292341 0.040385080 114.68303 28.029100 6528.7844 2.5614878e+10 0.17606262 0.042064729 114.73065 27.930183 6530.8848 2.3278630e+10 0.17855667 0.045067464 114.77828 27.831273 6532.9853 2.1183293e+10 0.18144750 0.047507319 114.82589 27.732369 6535.0858 1.9347583e+10 0.18203910 0.048187083 114.87351 27.633465 6537.1863 1.7689845e+10 0.18151616 0.048773038 114.92114 27.534561 6539.2867 1.6182952e+10 0.18044565 0.049990703 114.96876 27.435656 6541.3872 1.4821882e+10 0.17848326 0.051200964 115.01638 27.336751 6543.4877 1.3589307e+10 0.17593435 0.051509884 115.06400 27.237847 6545.5881 1.2454415e+10 0.17283924 0.052460836 115.11162 27.138942 6547.6886 1.1429852e+10 0.16989289 0.053549229 115.15924 27.040033 6549.7891 1.0451491e+10 0.16695970 0.054770413 115.20687 26.941115 6551.8895 9.5694434e+09 0.16427307 0.055547996 115.25449 26.842197 6553.9900 8.7847523e+09 0.16132005 0.054837398 115.30212 26.743289 6556.0905 8.0961031e+09 0.15869666 0.053999822 115.34974 26.644385 6558.1910 7.4879229e+09 0.15641931 0.053076584 115.39736 26.545481 6560.2914 6.9374556e+09 0.15350201 0.052011549 115.44498 26.446576 6562.3919 6.4285659e+09 0.15046292 0.050506997 115.49260 26.347672 6564.4924 5.9593142e+09 0.14743007 0.048548456 115.54022 26.248767 6566.5928 5.5246469e+09 0.14490127 0.046847517 115.58785 26.149863 6568.6933 5.1239161e+09 0.14262301 0.045134345 115.63547 26.050958 6570.7938 4.7713530e+09 0.14068101 0.044588698 115.68132 25.952047 6572.8943 4.4736101e+09 0.13843961 0.043718042 115.72528 25.853130 6574.9947 4.2044434e+09 0.13582394 0.042377243 115.76924 25.754212 6577.0952 3.9374285e+09 0.13280991 0.040070850 115.82046 25.645966 6579.1957 3.6527553e+09 0.12946195 0.036962934 115.87404 25.534696 6581.2961 3.3662576e+09 0.12670050 0.035506936 115.92445 25.428695 6583.3966 3.1217307e+09 0.12419054 0.034820924 115.96841 25.333455 6585.4971 2.9075469e+09 0.12147450 0.033573375 116.01236 25.238214 6587.5975 2.7271789e+09 0.11893467 0.033290762 116.05632 25.140780 6589.6980 2.5584960e+09 0.11603172 0.031661184 116.10028 25.041875 6591.7985 2.4066475e+09 0.11257275 0.028300915 116.14424 24.942970 6593.8990 2.2697105e+09 0.10932352 0.026266467 116.18820 24.844054 6595.9994 2.1364616e+09 0.10596126 0.025727214 116.23216 24.745137 6598.0999 2.0155700e+09 0.10388665 0.025359472 116.27663 24.646221 6600.2004 1.9045997e+09 0.10326382 0.025401787 116.32425 24.547316 6602.3008 1.8022913e+09 0.10273940 0.027259913 116.37188 24.448412 6604.4013 1.7072375e+09 0.10162896 0.026309558 116.41800 24.351007 6606.5018 1.6150019e+09 0.10105829 0.026602290 116.46195 24.255765 6608.6022 1.5275539e+09 0.098545278 0.023716448 116.50591 24.160524 6610.7027 1.4439608e+09 0.095756164 0.024674407 116.54987 24.062794 6612.8032 1.3601055e+09 0.094572471 0.023720642 116.59382 23.963890 6614.9037 1.2815972e+09 0.093567573 0.023317909 116.63778 23.864986 6617.0041 1.2104227e+09 0.092276892 0.023440617 116.67827 23.766069 6619.1046 1.1527625e+09 0.091584001 0.024551152 116.71857 23.667152 6621.2051 1.0944726e+09 0.090756206 0.025021476 116.76088 23.566423 6623.3055 1.0273791e+09 0.089279100 0.024605023 116.81034 23.459274 6625.4060 9.5875582e+08 0.088105858 0.025882093 116.85979 23.352126 6627.5065 8.9276879e+08 0.086320799 0.025512455 116.90488 23.251519 6629.6069 8.4087660e+08 0.085159259 0.025999367 116.94884 23.152615 6631.7074 7.9818911e+08 0.083393029 0.026002625 116.99279 23.053943 6633.8079 7.6175000e+08 0.081867618 0.026293302 117.03675 22.958702 6635.9084 7.2581118e+08 0.080291168 0.026536010 117.08071 22.863461 6638.0088 6.8801637e+08 0.079190340 0.025671258 117.12345 22.766997 6640.1093 6.5337572e+08 0.078990039 0.025257279 117.16374 22.668093 6642.2098 6.2323533e+08 0.078996913 0.025160280 117.20404 22.569189 6644.3102 5.9397672e+08 0.078143474 0.025377136 117.24986 22.465297 6646.4107 5.6743483e+08 0.077393464 0.026132744 117.29932 22.358133 6648.5112 5.3846850e+08 0.076646874 0.027306470 117.34715 22.252436 6650.6117 5.0926049e+08 0.076433503 0.026395261 117.38745 22.153531 6652.7121 4.8513782e+08 0.076272681 0.027446454 117.42774 22.054627 6654.8126 4.5446079e+08 0.075539260 0.027690054 117.46804 21.957362 6656.9131 4.2582389e+08 0.073970438 0.028824806 117.50833 21.862121 6659.0135 4.0275983e+08 0.072678916 0.031831776 117.54863 21.766880 6661.1140 3.8085387e+08 0.071656566 0.032593013 117.59549 21.663092 6663.2145 3.6829592e+08 0.070594618 0.032423777 117.64495 21.555943 6665.3149 3.4974355e+08 0.070321425 0.028031086 117.69174 21.451195 6667.4154 3.2963111e+08 0.069993021 0.027256046 117.73203 21.352291 6669.5159 3.1386511e+08 0.069204070 0.027825854 117.77232 21.253386 6671.6164 2.9778482e+08 0.069251849 0.026874132 117.81262 21.156532 6673.7168 2.8646097e+08 0.068659932 0.028531280 117.85292 21.061278 6675.8173 2.7468107e+08 0.066642125 0.031363775 117.89322 20.966025 6677.9178 2.6555253e+08 0.065512560 0.031053520 117.93771 20.860878 6680.0182 2.5586784e+08 0.065669518 0.029445354 117.98304 20.753730 6682.1187 2.4265634e+08 0.066397578 0.030515238 118.02633 20.651407 6684.2192 2.3306127e+08 0.066511481 0.032665214 118.06662 20.556165 6686.3196 2.2549582e+08 0.065632183 0.033947059 118.10692 20.460924 6688.4201 2.1785356e+08 0.063099862 0.033882167 118.15062 20.354859 6690.5206 2.0678817e+08 0.061766740 0.033056204 118.19595 20.243589 6692.6211 1.8890588e+08 0.061106313 0.032044133 118.24003 20.136306 6694.7215 1.7910356e+08 0.060586290 0.030249769 118.28032 20.041065 6696.8220 1.7573340e+08 0.060255589 0.030017309 118.32061 19.945824 6698.9225 1.6964866e+08 0.059155602 0.031484009 118.36352 19.844396 6701.0229 1.6351979e+08 0.057482776 0.031443102 118.40886 19.737232 6703.1234 1.5277165e+08 0.057372635 0.033984040 118.45339 19.631173 6705.2239 1.4089001e+08 0.057617721 0.037066616 118.49003 19.535931 6707.3243 1.3498597e+08 0.057332992 0.040140364 118.52666 19.440690 6709.4248 1.2868993e+08 0.056639222 0.040862338 118.56645 19.341130 6711.5253 1.2393781e+08 0.054844152 0.041289867 118.61178 19.233982 6713.6258 1.1910002e+08 0.052882328 0.045949860 118.65711 19.126834 6715.7262 1.1376780e+08 0.051209525 0.048121355 118.69773 19.030833 6717.8267 1.0970104e+08 0.049277704 0.049823133 118.73802 18.935592 6719.9272 1.0334953e+08 0.048098892 0.050488960 118.77850 18.837894 6722.0276 97768995. 0.048262554 0.050571033 118.81971 18.730746 6724.1281 91987819. 0.046064204 0.048856856 118.86093 18.623598 6726.2286 88203688. 0.042622079 0.040953429 118.90535 18.516450 6728.3291 87455533. 0.042152950 0.040094473 118.95068 18.409301 6730.4295 84003390. 0.040781862 0.040967829 118.99294 18.306354 6732.5300 82468277. 0.039502828 0.043837779 119.02958 18.211100 6734.6305 81044785. 0.039289941 0.049315666 119.06622 18.115845 6736.7309 78850199. 0.041094064 0.053118338 119.10827 18.013173 6738.8314 78399937. 0.042080969 0.061898344 119.15361 17.906025 6740.9319 74858585. 0.041187743 0.065642307 119.19813 17.798877 6743.0323 69979489. 0.037771727 0.071265625 119.23934 17.691729 6745.1328 64155562. 0.034595693 0.078622720 119.28055 17.584580 6747.2333 58192428. 0.029863840 0.067280851 119.32176 17.477432 6749.3338 54600414. 0.028785250 0.072186551 119.36297 17.370284 6751.4342 51482951. 0.025024184 0.073895263 119.40418 17.263136 6753.5347 49652918. 0.020960826 0.074707658 119.44539 17.155989 6755.6352 47857372. 0.0066174935 0.074326866 119.48660 17.048842 6757.7356 46801263. 0.015202097 0.074507600 119.53159 16.945474 6759.8361 46469675. 0.037812277 0.076021721 119.57692 16.842446