# # 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 = 47.567087 km # Date (UTC) = 2014-01-30T19:24:13.112 # Date (julian) = 2456688.30848510 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.0368 5.1828253e+10 0.051388959 0.032897414 -159.99791 63.189351 6504.3346 4.7858895e+10 0.060521355 0.033590282 -160.40495 62.976396 6506.6323 4.4285823e+10 0.069970206 0.034283150 -160.72235 62.803269 6508.9300 4.0589379e+10 0.079640238 0.034976019 -161.09461 62.593973 6511.2277 3.7699817e+10 0.089874716 0.035668887 -161.44084 62.399063 6513.5254 3.4541346e+10 0.10031787 0.036361755 -161.76629 62.215645 6515.8231 3.1801033e+10 0.11124832 0.037054624 -162.14595 61.994171 6518.1208 2.9383489e+10 0.12268457 0.037747492 -162.44164 61.813875 6520.4185 2.7366342e+10 0.13472872 0.038440361 -162.73738 61.633549 6522.7162 2.5571381e+10 0.14527844 0.039104805 -163.05358 61.439009 6525.0139 2.3726550e+10 0.15231470 0.039780624 -163.39941 61.222869 6527.3117 2.1975103e+10 0.15729177 0.040942734 -163.68788 61.042573 6529.6094 2.0320778e+10 0.16173293 0.043206446 -163.96459 60.862242 6531.9071 1.8811439e+10 0.16594251 0.046548934 -164.26834 60.662402 6534.2048 1.7309904e+10 0.16813531 0.048001843 -164.58875 60.449277 6536.5025 1.5880050e+10 0.16927686 0.048240095 -164.86287 60.261726 6538.8002 1.4627388e+10 0.17065400 0.049546338 -165.12346 60.080936 6541.0979 1.3593881e+10 0.17088027 0.051294776 -165.38712 59.896622 6543.3956 1.2648667e+10 0.17014517 0.051485726 -165.65163 59.709077 6545.6933 1.1776094e+10 0.16855820 0.052461779 -165.90405 59.521568 6547.9910 1.0974808e+10 0.16713330 0.053664240 -166.15650 59.339640 6550.2888 1.0170581e+10 0.16537769 0.055057661 -166.40615 59.156474 6552.5865 9.3801273e+09 0.16362144 0.055439154 -166.65140 58.968924 6554.8842 8.6346562e+09 0.16176159 0.054850934 -166.89661 58.781414 6557.1819 7.9409643e+09 0.15964395 0.053752102 -167.13739 58.593879 6559.4796 7.3418346e+09 0.15723233 0.052333049 -167.37544 58.406327 6561.7773 6.7881166e+09 0.15482924 0.050989643 -167.61347 58.218773 6564.0750 6.2903039e+09 0.15220708 0.048737601 -167.84537 58.031259 6566.3727 5.8705599e+09 0.15046118 0.046972035 -168.05571 57.858112 6568.6704 5.5176081e+09 0.14892099 0.045155374 -168.24205 57.701823 6570.9681 5.2217421e+09 0.14753835 0.044516471 -168.45808 57.514895 6573.2659 4.9057217e+09 0.14594699 0.043444140 -168.68170 57.323088 6575.5636 4.5551272e+09 0.14399170 0.041809276 -168.90514 57.135536 6577.8613 4.2308797e+09 0.14182849 0.038867519 -169.12150 56.948029 6580.1590 3.9855377e+09 0.13933756 0.036373829 -169.31491 56.776585 6582.4567 3.7986730e+09 0.13683293 0.035169515 -169.49524 56.614286 6584.7544 3.6189847e+09 0.13434373 0.034104558 -169.70366 56.427399 6587.0521 3.4039379e+09 0.13189785 0.033169916 -169.90863 56.235611 6589.3498 3.1881103e+09 0.12931745 0.032351957 -170.10384 56.048588 6591.6475 3.0174577e+09 0.12595348 0.028471243 -170.27211 55.892331 6593.9452 2.8696090e+09 0.12268090 0.026223430 -170.45849 55.715390 6596.2430 2.7082547e+09 0.11939850 0.025726169 -170.65938 55.520624 6598.5407 2.5294754e+09 0.11743232 0.025149033 -170.85414 55.325858 6600.8384 2.3767683e+09 0.11737189 0.026713418 -171.02408 55.160511 6603.1361 2.2555416e+09 0.11655565 0.026582712 -171.18965 55.000345 6605.4338 2.1470388e+09 0.11595923 0.027028963 -171.38438 54.805625 6607.7315 2.0468524e+09 0.11415876 0.024262548 -171.55164 54.634065 6610.0292 1.9343044e+09 0.11121842 0.024030893 -171.70915 54.470120 6612.3269 1.8302759e+09 0.10903659 0.024076486 -171.88948 54.275353 6614.6246 1.7360283e+09 0.10797712 0.023510143 -172.05385 54.106154 6616.9223 1.6404673e+09 0.10654538 0.023427061 -172.21023 53.949724 6619.2201 1.5520541e+09 0.10581854 0.024579010 -172.39046 53.755116 6621.5178 1.4757202e+09 0.10471555 0.024917831 -172.54862 53.580310 6623.8155 1.4006843e+09 0.10266312 0.024793947 -172.69288 53.418011 6626.1132 1.3276433e+09 0.10119996 0.026446695 -172.86458 53.224848 6628.4109 1.2638747e+09 0.099192943 0.025869923 -173.02142 53.048405 6630.7086 1.1977566e+09 0.097227665 0.025930048 -173.16568 52.886106 6633.0063 1.1435033e+09 0.095382298 0.026153356 -173.30994 52.723808 6635.3040 1.0947484e+09 0.093317405 0.026445381 -173.45933 52.553821 6637.6017 1.0370921e+09 0.091543083 0.025866700 -173.62520 52.359105 6639.8994 9.8382339e+08 0.090771097 0.025306592 -173.76759 52.191960 6642.1972 9.3704639e+08 0.090315284 0.025159764 -173.90473 52.029660 6644.4949 8.9733714e+08 0.088714908 0.025397090 -174.03697 51.867362 6646.7926 8.5628232e+08 0.087225235 0.026330411 -174.18306 51.684296 6649.0903 8.1162492e+08 0.085910025 0.027509232 -174.33813 51.487754 6651.3880 7.6813669e+08 0.085681556 0.026781509 -174.47037 51.325458 6653.6857 7.2886701e+08 0.085269617 0.027875759 -174.60259 51.163176 6655.9834 6.9565626e+08 0.083580071 0.028016566 -174.73481 51.000909 6658.2811 6.6729169e+08 0.082060558 0.030559663 -174.86219 50.838617 6660.5788 6.3992080e+08 0.080559819 0.032152132 -174.99210 50.671581 6662.8765 6.0875980e+08 0.079271325 0.032552477 -175.14358 50.476815 6665.1743 5.7760025e+08 0.078649014 0.028261605 -175.27132 50.306711 6667.4720 5.4190996e+08 0.078185049 0.027276819 -175.39213 50.143835 6669.7697 5.1183753e+08 0.077390550 0.027565191 -175.51836 49.975526 6672.0674 4.9142243e+08 0.077077901 0.026918658 -175.64197 49.809830 6674.3651 4.6888691e+08 0.075942580 0.029262774 -175.76217 49.647564 6676.6628 4.4544075e+08 0.073509451 0.032140899 -175.90087 49.460322 6678.9605 4.2220714e+08 0.072568939 0.030294179 -176.03366 49.277966 6681.2582 3.9476778e+08 0.073637388 0.029855466 -176.14786 49.115667 6683.5559 3.7346888e+08 0.073991026 0.032003313 -176.26639 48.949050 6685.8536 3.5638876e+08 0.073361516 0.033606500 -176.38629 48.781072 6688.1514 3.3996287e+08 0.070619059 0.033820129 -176.50050 48.618772 6690.4491 3.2733595e+08 0.068554864 0.033064400 -176.61235 48.456485 6692.7468 3.1092059e+08 0.067415134 0.031898141 -176.72052 48.294219 6695.0445 2.9496595e+08 0.066621313 0.029851302 -176.84971 48.108310 6697.3422 2.8046676e+08 0.065870518 0.030134571 -176.97692 47.922571 6699.6399 2.6464042e+08 0.064383982 0.030999980 -177.08511 47.754262 6701.9376 2.5228399e+08 0.062592918 0.032785198 -177.19331 47.590026 6704.2353 2.3757147e+08 0.063072555 0.036293112 -177.30152 47.427728 6706.5330 2.2749524e+08 0.062977280 0.039374115 -177.40971 47.265429 6708.8307 2.1895829e+08 0.062418240 0.040948234 -177.51790 47.101036 6711.1285 2.0694027e+08 0.060671457 0.040838383 -177.62609 46.932760 6713.4262 1.9951264e+08 0.058422585 0.045227983 -177.73015 46.768587 6715.7239 1.8961673e+08 0.056416772 0.048118950 -177.83234 46.606289 6718.0216 1.8267582e+08 0.054146504 0.049846036 -177.93453 46.443990 6720.3193 1.7204814e+08 0.053137460 0.050382770 -178.04406 46.267436 6722.6170 1.6194897e+08 0.052613128 0.049842421 -178.16669 46.065457 6724.9147 1.5403897e+08 0.048383814 0.042288175 -178.26942 45.902087 6727.2124 1.4604760e+08 0.046484556 0.040677371 -178.37161 45.739789 6729.5101 1.4107189e+08 0.045623462 0.040705407 -178.47380 45.577490 6731.8078 1.3237949e+08 0.043628731 0.043357793 -178.57209 45.411331 6734.1056 1.2530355e+08 0.042458950 0.049347248 -178.66825 45.243055 6736.4033 1.1997277e+08 0.044143705 0.051879588 -178.76443 45.080648 6738.7010 1.1385250e+08 0.045014171 0.061180302 -178.86061 44.918349 6740.9987 1.0803411e+08 0.043825291 0.065756451 -178.95679 44.756051 6743.2964 1.0440149e+08 0.039586766 0.073046940 -179.05296 44.589816 6745.5941 1.0025377e+08 0.036858266 0.078816645 -179.14913 44.421505 6747.8918 96113481. 0.032526272 0.067054142 -179.24531 44.259155 6750.1895 91565116. 0.029789529 0.072327761 -179.34542 44.086242 6752.4872 88692091. 0.026981019 0.073570650 -179.45361 43.891523 6754.7849 88097214. 0.025411017 0.074951174 -179.54483 43.721650 6757.0827 85171235. 0.022639653 0.076489207 -179.63500 43.555006 6759.3804 79891211. 0.023635901 0.075911744 -179.72516 43.392708 6761.6781 74214971. 0.026125594 0.078024247 -179.81533 43.230410 6763.9758 69970225. 0.030022973 0.079409552 -179.90550 43.068111 6766.2735 67428860. 0.031384320 0.080332408 25.588578 42.900101 6768.5712 65359298. 0.027214865 0.082911373 179.91418 42.733512 6770.8689 61942741. 0.022434259 0.088987213 179.82400 42.571214 6773.1666 59386496. 0.017821399 0.094560170 179.73759 42.408937 6775.4643 58548904. 0.013023663 0.10013313 179.65345 42.246673 6777.7621 56646763. 0.0075906183 0.10570608 179.55316 42.053243 6780.0598 55319170. 0.00025691273 0.11127904 179.46181 41.873625 6782.3575 52442460. -0.023532568 0.11685200 179.37765 41.705313 6784.6552 49530814. -0.012173556 0.12242496 179.29350 41.542467 6786.9529 48577270. 0.020465425 0.12799791 179.20934 41.380169