# # 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 = 40.952160 km # Date (UTC) = 2016-12-26T09:03:36.237 # Date (julian) = 2457748.87750274 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6537.4508 1.7591518e+10 0.18208756 0.048897736 -17.927017 47.572982 6539.1068 1.6097625e+10 0.18057226 0.049772900 -17.996331 47.503668 6540.7628 1.4686116e+10 0.17923771 0.051214485 -18.065644 47.434354 6542.4189 1.3826714e+10 0.17742142 0.051161267 -18.134958 47.365041 6544.0749 1.2943168e+10 0.17521459 0.051705122 -18.204271 47.295728 6545.7310 1.2249761e+10 0.17326205 0.052462116 -18.273584 47.226415 6547.3870 1.1830254e+10 0.17176015 0.053434533 -18.342901 47.156145 6549.0430 1.0960661e+10 0.16939896 0.054010142 -18.412223 47.083934 6550.6991 1.0145800e+10 0.16784446 0.055160404 -18.481546 47.011723 6552.3551 9.5034971e+09 0.16628582 0.055497382 -18.550868 46.939512 6554.0112 8.8802021e+09 0.16360442 0.054832615 -18.617676 46.869816 6555.6672 8.4555469e+09 0.16128395 0.054292753 -18.684102 46.800502 6557.3232 7.8151089e+09 0.15921985 0.053663496 -18.750528 46.731188 6558.9793 7.2406514e+09 0.15614691 0.052404832 -18.816953 46.660703 6560.6353 6.8271494e+09 0.15324730 0.051701479 -18.883379 46.588501 6562.2914 6.4681219e+09 0.15030545 0.050602655 -18.949804 46.516299 6563.9474 6.1534000e+09 0.14657423 0.048832432 -19.016229 46.444098 6565.6035 5.8307462e+09 0.14367564 0.047633170 -19.082655 46.374621 6567.2595 5.4834711e+09 0.14112098 0.046397780 -19.149080 46.305308 6568.9155 5.1592199e+09 0.13840414 0.044930069 -19.215505 46.235995 6570.5716 4.8515460e+09 0.13676894 0.044680744 -19.280546 46.165289 6572.2276 4.5985325e+09 0.13505065 0.044099806 -19.344091 46.093078 6573.8837 4.3905581e+09 0.13263978 0.042948369 -19.407637 46.020867 6575.5397 4.1896166e+09 0.13069737 0.041833222 -19.471330 45.948549 6577.1957 3.9808391e+09 0.12854863 0.039912914 -19.542811 45.870569 6578.8518 3.7454969e+09 0.12590135 0.037304555 -19.614293 45.792590 6580.5078 3.4989734e+09 0.12399951 0.036051454 -19.685774 45.714610 6582.1639 3.2742790e+09 0.12213596 0.035249204 -19.749781 45.642067 6583.8199 3.0938150e+09 0.11995632 0.034606668 -19.813318 45.569866 6585.4759 2.9346331e+09 0.11806122 0.033590267 -19.876855 45.497664 6587.1320 2.7852647e+09 0.11618211 0.033187612 -19.940392 45.426844 6588.7880 2.6309731e+09 0.11417722 0.033116767 -20.003929 45.357531 6590.4441 2.4865375e+09 0.11198605 0.030236033 -20.067466 45.288218 6592.1001 2.3512486e+09 0.10966011 0.027976291 -20.130955 45.218857 6593.7561 2.2239027e+09 0.10729927 0.026399232 -20.191616 45.146649 6595.4122 2.1073363e+09 0.10481380 0.025666316 -20.252273 45.074438 6597.0682 1.9953938e+09 0.10241147 0.025701196 -20.312931 45.002227 6598.7243 1.8942984e+09 0.10034333 0.025061372 -20.375183 44.931620 6600.3803 1.7958338e+09 0.099703249 0.025771729 -20.438720 44.862306 6602.0364 1.6985241e+09 0.098663831 0.027485610 -20.502257 44.792992 6603.6924 1.6163309e+09 0.096977060 0.026253377 -20.565531 44.723414 6605.3484 1.5342829e+09 0.096463292 0.026957354 -20.626181 44.651213 6607.0045 1.4585799e+09 0.095402790 0.025698154 -20.686830 44.579011 6608.6605 1.3862098e+09 0.093226716 0.023714907 -20.747480 44.506810 6610.3166 1.3152176e+09 0.091218146 0.024305444 -20.808129 44.434608 6611.9726 1.2504175e+09 0.089646677 0.024338224 -20.868778 44.362407 6613.6286 1.1868796e+09 0.089120544 0.023804240 -20.929427 44.290205 6615.2847 1.1227818e+09 0.088303625 0.023260291 -20.989598 44.218482 6616.9407 1.0631627e+09 0.087439477 0.023429946 -21.047367 44.149160 6618.5968 1.0082347e+09 0.087096775 0.024221424 -21.105136 44.079838 6620.2528 9.5246417e+08 0.086783317 0.024848664 -21.162905 44.010516 6621.9088 9.0091063e+08 0.085957691 0.024788205 -21.220668 43.939166 6623.5649 8.5351381e+08 0.084669254 0.024701108 -21.278429 43.866965 6625.2209 8.1015281e+08 0.083907327 0.025661239 -21.336190 43.794763 6626.8770 7.6641163e+08 0.082314370 0.025473562 -21.394649 43.723259 6628.5330 7.2577850e+08 0.081592879 0.025919503 -21.455298 43.653945 6630.1891 6.8111600e+08 0.080660477 0.025928768 -21.515948 43.584631 6631.8451 6.4504563e+08 0.079363134 0.026016610 -21.576597 43.515318 6633.5011 6.0921782e+08 0.078403521 0.026239746 -21.632747 43.443754 6635.1572 5.7636317e+08 0.077429558 0.026423358 -21.687620 43.371553 6636.8132 5.5736745e+08 0.076157114 0.026233947 -21.742494 43.299351 6638.4693 5.3292210e+08 0.075357466 0.025651198 -21.800566 43.225321 6640.1253 5.0886749e+08 0.075570775 0.025255322 -21.865548 43.147341 6641.7813 4.7713202e+08 0.075832770 0.025150954 -21.930531 43.069362 6643.4374 4.4040145e+08 0.075568645 0.025258658 -21.993791 42.992759 6645.0934 4.1270980e+08 0.075270890 0.025495449 -22.051560 42.920548 6646.7495 3.9005959e+08 0.074681178 0.026308094 -22.109329 42.848337 6648.4055 3.7529302e+08 0.074129922 0.027235730 -22.167098 42.776126 6650.0615 3.6142192e+08 0.073972154 0.026269326 -22.222618 42.703922 6651.7176 3.4818629e+08 0.073732925 0.027034091 -22.277492 42.631721 6653.3736 3.3323859e+08 0.073628798 0.027716422 -22.332365 42.559519 6655.0297 3.2182968e+08 0.072861243 0.027622475 -22.387238 42.488225 6656.6857 3.0682462e+08 0.071566063 0.028625261 -22.442111 42.418913 6658.3418 2.9478633e+08 0.070685758 0.030667180 -22.496983 42.349600 6659.9978 2.8183213e+08 0.069900288 0.031626458 -22.551856 42.280287 6661.6538 2.6672111e+08 0.068942535 0.032867961 -22.606729 42.208514 6663.3099 2.5963304e+08 0.068135371 0.032397339 -22.661603 42.136312 6664.9659 2.5026026e+08 0.067935918 0.028671848 -22.716476 42.064110 6666.6220 2.4758744e+08 0.067663558 0.027029791 -22.772758 41.989656 6668.2780 2.4189650e+08 0.066982086 0.027716782 -22.831251 41.911665 6669.9340 2.3170801e+08 0.066742089 0.027396381 -22.889744 41.833674 6671.5901 2.2197891e+08 0.066648225 0.026873757 -22.947109 41.757488 6673.2461 2.1423130e+08 0.066306980 0.027827308 -23.001982 41.685286 6674.9022 2.0623305e+08 0.065127897 0.029715823 -23.056855 41.613085 6676.5582 1.9751110e+08 0.063339983 0.032073482 -23.111728 41.540884 6678.2142 1.8968511e+08 0.062809634 0.030793319 -23.164148 41.471135 6679.8703 1.8301694e+08 0.063034506 0.029548608 -23.216133 41.401823 6681.5263 1.8071493e+08 0.063659427 0.030061147 -23.268118 41.332510 6683.1824 1.7450973e+08 0.064144347 0.031455841 -23.322616 41.258589 6684.8384 1.6406075e+08 0.064121024 0.032696637 -23.381100 41.177361 6686.4944 1.5422081e+08 0.063181337 0.034048762 -23.439585 41.096132 6688.1505 1.4746809e+08 0.061265997 0.033819928 -23.496061 41.018585 6689.8065 1.4217791e+08 0.059698158 0.033290017 -23.548046 40.949271 6691.4626 1.4150826e+08 0.058818687 0.032892126 -23.600032 40.879957 6693.1186 1.3809597e+08 0.058164935 0.031563397 -23.652017 40.810644 6694.7747 1.3227031e+08 0.057598522 0.030175309 -23.709510 40.731235 6696.4307 1.2710814e+08 0.057224038 0.029854730 -23.768003 40.649995 6698.0867 1.1995757e+08 0.056452832 0.030336872 -23.826496 40.568755 6699.7428 1.1746256e+08 0.055101946 0.030905062 -23.877762 40.496688 6701.3988 1.0978890e+08 0.053507162 0.031994625 -23.926859 40.427376 6703.0549 1.0122421e+08 0.053307075 0.033812509 -23.975956 40.358063 6704.7109 94075051. 0.053176958 0.036526643 -24.025939 40.287864 6706.3669 92793308. 0.052855556 0.039085036 -24.077924 40.215663 6708.0230 93878224. 0.052566035 0.040068604 -24.129909 40.143461 6709.6790 94554977. 0.051634832 0.040700652 -24.181894 40.071260 6711.3351 90745023. 0.049938869 0.041073444 -24.236623 39.991439 6712.9911 82016368. 0.048078978 0.043670110 -24.291858 39.910211 6714.6471 79631936. 0.046295037 0.047352061 -24.347094 39.828982 6716.3032 75393335. 0.044634453 0.048847927 -24.402329 39.750244 6717.9592 72665420. 0.042919107 0.049814936 -24.457564 39.672264 6719.6153 71955467. 0.041684080 0.050785288 -24.512799 39.594285 6721.2713 64549268. 0.041430607 0.050385646 -24.563812 39.520277 6722.9274 62172186. 0.040378666 0.049458756 -24.612915 39.448066 6724.5834 60303586. 0.037227442 0.045054959 -24.662019 39.375855 6726.2394 58083655. 0.034679547 0.040953527 -24.712511 39.302338 6727.8955 52265189. 0.033226762 0.039767357 -24.767746 39.224360 6729.5515 48178589. 0.031373933 0.040677828 -24.822981 39.146382 6731.2076 48124169. 0.029472389 0.042163101 -24.876874 39.069263 6732.8636 48736351. 0.027847436 0.043899194 -24.923083 38.997061 6734.5196 56045356. 0.027712430 0.049322334 -24.969292 38.924859 6736.1757 54609894. 0.026381542 0.051019175 -25.015501 38.852657 6737.8317 52088366. 0.020913724 0.056785033 -25.067904 38.776491 6739.4878 50559326. -0.015080765 0.063423480 -25.123139 38.698511 6741.1438 47321510. 0.011404567 0.066168825 -25.178374 38.620532 6742.7998 46002461. 0.075717443 0.070559723 -25.231632 38.540576