# # 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 = 42.989765 km # Date (UTC) = 2015-12-12T09:00:11.051 # Date (julian) = 2457368.87512790 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6486.4821 1.3352699e+11 0.016545234 0.028206921 -13.103470 52.757749 6488.4193 1.1494398e+11 0.022601455 0.028791082 -13.208200 52.680046 6490.3565 1.0255719e+11 0.028073921 0.029375242 -13.312931 52.602343 6492.2937 9.4202332e+10 0.033015771 0.029959403 -13.416130 52.523097 6494.2309 8.6983496e+10 0.037660578 0.030543564 -13.517495 52.442004 6496.1681 8.0393241e+10 0.042041376 0.031127724 -13.618861 52.360911 6498.1054 7.2115380e+10 0.046184623 0.031711885 -13.720220 52.281498 6500.0426 6.4311474e+10 0.049773138 0.032296045 -13.821572 52.203795 6501.9798 5.7126836e+10 0.052914733 0.032880206 -13.922925 52.126091 6503.9170 5.2350987e+10 0.056204563 0.033464367 -14.022468 52.046578 6505.8542 4.9426561e+10 0.060468203 0.034048527 -14.120442 51.965496 6507.7914 4.5334477e+10 0.065381433 0.034632688 -14.218416 51.884414 6509.7286 4.2505695e+10 0.072234977 0.035216848 -14.316389 51.805276 6511.6658 3.9206470e+10 0.080633539 0.035801009 -14.414363 51.727573 6513.6030 3.6616763e+10 0.091561396 0.036385169 -14.512337 51.649870 6515.5402 3.4886059e+10 0.10529074 0.036969330 -14.608239 51.570081 6517.4775 3.3050019e+10 0.12090320 0.037553491 -14.702847 51.488989 6519.4147 3.1428481e+10 0.13800565 0.038137651 -14.797455 51.407897 6521.3519 2.9515042e+10 0.15407057 0.038721812 -14.894271 51.329028 6523.2891 2.7835083e+10 0.16437211 0.039250763 -14.992244 51.251325 6525.2263 2.6020733e+10 0.17054680 0.039756388 -15.090218 51.173622 6527.1635 2.3914676e+10 0.17363948 0.040835180 -15.183489 51.093566 6529.1007 2.1895386e+10 0.17502908 0.042396222 -15.274706 51.012484 6531.0379 2.0002408e+10 0.17625953 0.045283887 -15.365924 50.931401 6532.9751 1.8489979e+10 0.17838088 0.047498819 -15.459627 50.850319 6534.9124 1.7008796e+10 0.17845879 0.048199777 -15.554222 50.769237 6536.8496 1.5654440e+10 0.17737739 0.048550625 -15.648818 50.688155 6538.7868 1.4597004e+10 0.17641862 0.049539797 -15.740800 50.609687 6540.7240 1.3796397e+10 0.17552177 0.051196130 -15.832030 50.531973 6542.6612 1.3068025e+10 0.17396643 0.051253263 -15.923259 50.454259 6544.5984 1.2154201e+10 0.17251298 0.052129782 -16.014478 50.373796 6546.5356 1.1204190e+10 0.17070900 0.052905248 -16.105694 50.292715 6548.4728 1.0274438e+10 0.16930264 0.053808847 -16.196911 50.211634 6550.4100 9.4611855e+09 0.16816798 0.055088028 -16.285235 50.130552 6552.3472 8.8319569e+09 0.16676330 0.055499366 -16.373073 50.049470 6554.2845 8.1882913e+09 0.16457301 0.054838349 -16.460912 49.968387 6556.2217 7.6467954e+09 0.16226973 0.053980537 -16.548751 49.890335 6558.1589 7.1810994e+09 0.16010921 0.053103925 -16.636589 49.812631 6560.0961 6.7992283e+09 0.15727593 0.052187678 -16.724428 49.734928 6562.0333 6.4093966e+09 0.15385196 0.050848223 -16.812278 49.654051 6563.9705 5.9347441e+09 0.15024766 0.048805718 -16.900128 49.572959 6565.9077 5.5174407e+09 0.14767595 0.047287676 -16.987978 49.491867 6567.8449 5.1423435e+09 0.14605332 0.045902783 -17.075817 49.410785 6569.7821 4.8637596e+09 0.14451850 0.044903329 -17.163656 49.329703 6571.7193 4.5887229e+09 0.14290861 0.044306808 -17.251432 49.248621 6573.6566 4.2719280e+09 0.14099789 0.043130613 -17.335897 49.167538 6575.5938 3.9858006e+09 0.13929716 0.041778976 -17.420358 49.086456 6577.5310 3.7453441e+09 0.13730535 0.039386340 -17.504818 49.005373 6579.4682 3.5423474e+09 0.13488353 0.036813116 -17.589278 48.924292 6581.4054 3.3951921e+09 0.13257819 0.035473850 -17.673738 48.843211 6583.3426 3.2348452e+09 0.13065610 0.034848255 -17.757871 48.762129 6585.2798 3.0589403e+09 0.12874559 0.033747067 -17.838964 48.681036 6587.2170 2.9132212e+09 0.12673846 0.033206454 -17.920056 48.599943 6589.1542 2.7735876e+09 0.12453356 0.032739987 -18.001147 48.518851 6591.0914 2.6332984e+09 0.12188988 0.029098724 -18.082229 48.437770 6593.0287 2.4911408e+09 0.11965056 0.027075579 -18.163311 48.356689 6594.9659 2.3498494e+09 0.11707607 0.025642309 -18.244392 48.275608 6596.9031 2.2260892e+09 0.11413396 0.025723168 -18.325474 48.194526 6598.8403 2.1076278e+09 0.11180995 0.025005983 -18.406556 48.113443 6600.7775 1.9996655e+09 0.11111019 0.026588265 -18.487638 48.032361 6602.7147 1.8848207e+09 0.10970369 0.026906731 -18.568719 47.951280 6604.6519 1.7881615e+09 0.10799906 0.026458363 -18.649801 47.870199 6606.5891 1.7022491e+09 0.10648979 0.026445320 -18.730015 47.789985 6608.5263 1.6180084e+09 0.10359196 0.023718455 -18.807729 47.712272 6610.4635 1.5429456e+09 0.10078409 0.024445888 -18.885443 47.634559 6612.4008 1.4676545e+09 0.099277902 0.024021321 -18.963154 47.555841 6614.3380 1.3968989e+09 0.098475855 0.023707646 -19.040858 47.474759 6616.2752 1.3345838e+09 0.097191266 0.023325488 -19.118561 47.393676 6618.2124 1.2705922e+09 0.096794515 0.023931175 -19.196264 47.312594 6620.1496 1.2105929e+09 0.096280926 0.024815406 -19.273968 47.231511 6622.0868 1.1568652e+09 0.095177594 0.024734887 -19.351671 47.150429 6624.0240 1.1065186e+09 0.093435828 0.024875167 -19.429374 47.069347 6625.9612 1.0597424e+09 0.092503200 0.026544639 -19.507077 46.988266 6627.8984 1.0196621e+09 0.090805371 0.025663864 -19.584780 46.907185 6629.8356 9.7915722e+08 0.089525109 0.025958017 -19.664956 46.821866 6631.7729 9.3696944e+08 0.087810681 0.026009273 -19.748573 46.730647 6633.7101 8.9655501e+08 0.086411245 0.026276224 -19.832191 46.639428 6635.6473 8.3920965e+08 0.085147810 0.026496857 -19.908502 46.553519 6637.5845 7.9337531e+08 0.084029982 0.025875146 -19.982837 46.469048 6639.5217 7.5452449e+08 0.083374331 0.025441607 -20.057171 46.384577 6641.4589 7.2625276e+08 0.083526294 0.025149859 -20.131498 46.302910 6643.3961 7.0343192e+08 0.082628843 0.025252428 -20.205824 46.221829 6645.3333 6.7178762e+08 0.081551746 0.025607838 -20.280150 46.140748 6647.2705 6.3737487e+08 0.080340637 0.026580221 -20.354475 46.059665 6649.2078 6.0827643e+08 0.079099229 0.027347312 -20.428799 45.978583 6651.1450 5.8732553e+08 0.078610953 0.026595258 -20.503124 45.897501 6653.0822 5.6467978e+08 0.078287356 0.027567616 -20.574391 45.816410 6655.0194 5.4006443e+08 0.077325209 0.027618225 -20.645347 45.735318 6656.9566 5.1606595e+08 0.075743474 0.028863013 -20.716302 45.654227 6658.8938 4.9084783e+08 0.074543654 0.031646256 -20.795657 45.563535 6660.8310 4.6794158e+08 0.073564675 0.032381348 -20.875474 45.472316 6662.7682 4.4470604e+08 0.072642412 0.032613253 -20.952480 45.384309 6664.7054 4.2168420e+08 0.072031637 0.029624938 -21.023426 45.303226 6666.6426 4.0315997e+08 0.071927915 0.027033822 -21.094373 45.222144 6668.5799 3.8457730e+08 0.071062309 0.027983903 -21.165319 45.141061 6670.5171 3.6873509e+08 0.070989278 0.027089085 -21.236266 45.059980 6672.4543 3.5326944e+08 0.070747466 0.027142905 -21.307213 44.978900 6674.3915 3.3790561e+08 0.069775505 0.029285034 -21.376819 44.897818 6676.3287 3.2577086e+08 0.067691434 0.031925566 -21.444386 44.816736 6678.2659 3.1049682e+08 0.066931312 0.030758765 -21.511954 44.735654 6680.2031 2.9679229e+08 0.067285705 0.029485277 -21.583213 44.650143 6682.1403 2.8382026e+08 0.067885517 0.030531756 -21.659228 44.558925 6684.0775 2.6659289e+08 0.068048608 0.032658026 -21.735244 44.467708 6686.0147 2.5538563e+08 0.067491475 0.033769663 -21.804460 44.384649 6687.9520 2.4773895e+08 0.065184399 0.033811985 -21.872037 44.303556 6689.8892 2.3932307e+08 0.063220635 0.033215633 -21.939615 44.222462 6691.8264 2.2896541e+08 0.062190328 0.032806293 -22.014333 44.132800 6693.7636 2.1175375e+08 0.061389616 0.031342132 -22.090348 44.041583 6695.7008 1.9452395e+08 0.061331882 0.029730746 -22.163817 43.952547 6697.6380 1.8494198e+08 0.060776737 0.030172006 -22.228007 43.871465 6699.5752 1.7985145e+08 0.059518494 0.031059672 -22.292197 43.790383 6701.5124 1.7404183e+08 0.057978519 0.032161322 -22.357249 43.708438 6703.4496 1.6806373e+08 0.058120830 0.034800370 -22.424818 43.623978 6705.3868 1.5989647e+08 0.058316887 0.037356342 -22.492386 43.539518 6707.3241 1.5436611e+08 0.058047576 0.040140405 -22.561326 43.453062 6709.2613 1.4998646e+08 0.057438037 0.040966364 -22.633541 43.361844 6711.1985 1.4370886e+08 0.055888538 0.040918046 -22.705755 43.270626 6713.1357 1.3546189e+08 0.054203007 0.044177378 -22.772645 43.186134 6715.0729 1.3036675e+08 0.052514638 0.047453146 -22.836843 43.105041 6717.0101 1.2805032e+08 0.050715137 0.049873643 -22.901042 43.023948 6718.9473 1.2328109e+08 0.048651383 0.051287791 -22.970889 42.935719 6720.8845 1.2116436e+08 0.049131670 0.050317278 -23.043104 42.844500 6722.8217 1.1347662e+08 0.048450520 0.049589321 -23.115039 42.753281 6724.7589 1.0785317e+08 0.045014931 0.043588951 -23.183453 42.662063 6726.6962 1.0437606e+08 0.043059444 0.040957646 -23.251867 42.570846 6728.6334 99131914. 0.042820718 0.040525792 -23.316915 42.484114 6730.5706 96505676. 0.041427455 0.041161237 -23.377726 42.403032 6732.5078 91531273. 0.040242371 0.043833691 -23.438537 42.321949 6734.4450 87696681. 0.039842747 0.049326825 -23.504852 42.235975 6736.3822 83973187. 0.041513558 0.051799974 -23.577067 42.144757 6738.3194 76619834. 0.042595076 0.059079646 -23.649282 42.053539 6740.2566 72925539. 0.042287887 0.064488771 -23.718260 41.962320 6742.1938 69591738. 0.040122447 0.069083080 -23.786674 41.871101 6744.1311 66205136. 0.035889636 0.077894776 -23.852668 41.782116 6746.0683 64968484. 0.034668627 0.078193667 -23.910108 41.701024 6748.0055 60286125. 0.030527797 0.067045684 -23.967549 41.619932 6749.9427 57039424. 0.026639812 0.072019826 -24.027853 41.536198 6751.8799 54497704. 0.015647019 0.074083694 -24.096267 41.444979 6753.8171 52251313. 0.021381320 0.075621580 -24.164681 41.353760 6755.7543 52413563. 0.034513427 0.074274628 -24.230701 41.260146