# # 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 = 49.105847 km # Date (UTC) = 2014-12-09T09:28:13.351 # Date (julian) = 2457000.89459898 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.9388 6.1544949e+10 0.042185691 0.031661660 -20.993992 52.729295 6500.5794 5.6312851e+10 0.050750730 0.032457923 -21.132983 52.619614 6503.2200 5.4368551e+10 0.059654731 0.033254186 -21.271135 52.509093 6505.8606 5.0900133e+10 0.068855582 0.034050449 -21.406311 52.401548 6508.5012 4.6739729e+10 0.078391353 0.034846712 -21.539858 52.295632 6511.1418 4.2769595e+10 0.088438471 0.035642975 -21.683792 52.180968 6513.7823 3.8081960e+10 0.098700878 0.036439238 -21.839215 52.056628 6516.4229 3.4150399e+10 0.10970425 0.037235501 -21.980227 51.939805 6519.0635 3.0430063e+10 0.12130116 0.038031764 -22.109187 51.829268 6521.7041 2.7195211e+10 0.13369472 0.038828027 -22.239859 51.720456 6524.3447 2.4782315e+10 0.14081002 0.039549417 -22.373405 51.614539 6526.9853 2.2251916e+10 0.14679794 0.040701051 -22.506022 51.507694 6529.6259 2.0460902e+10 0.15179073 0.043232761 -22.634965 51.397173 6532.2665 1.8975811e+10 0.15706507 0.046906802 -22.763907 51.286652 6534.9071 1.7516124e+10 0.16076982 0.048198298 -22.892849 51.176130 6537.5477 1.6153568e+10 0.16339999 0.048943420 -23.021791 51.065607 6540.1882 1.4814382e+10 0.16623815 0.050943033 -23.146793 50.959028 6542.8288 1.3670272e+10 0.16688205 0.051316909 -23.271145 50.853098 6545.4694 1.2657096e+10 0.16693808 0.052459773 -23.406175 50.734511 6548.1100 1.1557061e+10 0.16602703 0.053700500 -23.546056 50.610174 6550.7506 1.0388086e+10 0.16414874 0.055173304 -23.674166 50.496299 6553.3912 9.3476324e+09 0.16224462 0.055138419 -23.798503 50.385776 6556.0318 8.5412358e+09 0.15962912 0.054008453 -23.920142 50.275254 6558.6724 7.9691815e+09 0.15741451 0.052666358 -24.039874 50.164731 6561.3130 7.4330446e+09 0.15455122 0.051218459 -24.159612 50.054203 6563.9536 6.8542886e+09 0.15179818 0.048825323 -24.279360 49.943668 6566.5941 6.3414758e+09 0.15001283 0.046846778 -24.399104 49.833135 6569.2347 5.9125288e+09 0.14833565 0.044867702 -24.518835 49.722613 6571.8753 5.4849055e+09 0.14717506 0.044264207 -24.639267 49.611102 6574.5159 5.0807314e+09 0.14509071 0.042607212 -24.768787 49.486764 6577.1565 4.6866969e+09 0.14299571 0.039974539 -24.896272 49.364379 6579.7971 4.3166084e+09 0.14050097 0.036632298 -25.011399 49.253857 6582.4377 4.0379866e+09 0.13812191 0.035174688 -25.126525 49.143334 6585.0783 3.7249133e+09 0.13603387 0.033908193 -25.241652 49.032813 6587.7189 3.4683083e+09 0.13374386 0.033317643 -25.356779 48.922293 6590.3595 3.2622491e+09 0.13078425 0.030393422 -25.468242 48.811759 6593.0000 3.0575126e+09 0.12753134 0.027102177 -25.578779 48.701222 6595.6406 2.8915850e+09 0.12356857 0.025690007 -25.692194 48.590694 6598.2812 2.7029696e+09 0.12024817 0.025272898 -25.807321 48.480171 6600.9218 2.5470916e+09 0.11847245 0.026884961 -25.924284 48.363355 6603.5624 2.4071447e+09 0.11603282 0.026330330 -26.043442 48.239017 6606.2030 2.2606270e+09 0.11472342 0.027139183 -26.158063 48.121937 6608.8436 2.1240412e+09 0.11145797 0.023710067 -26.268585 48.011415 6611.4842 2.0047022e+09 0.10854822 0.024649693 -26.377482 47.900888 6614.1248 1.9013874e+09 0.10758195 0.023854532 -26.483412 47.790352 6616.7654 1.7953275e+09 0.10624788 0.023402422 -26.591758 47.677296 6619.4059 1.6783411e+09 0.10584416 0.024623863 -26.710916 47.552957 6622.0465 1.5627914e+09 0.10495429 0.024745605 -26.826732 47.432105 6624.6871 1.4664009e+09 0.10326889 0.025230126 -26.932649 47.321584 6627.3277 1.3871947e+09 0.10120809 0.025443403 -27.038566 47.211063 6629.9683 1.3175276e+09 0.099810953 0.025934032 -27.144483 47.100541 6632.6089 1.2502882e+09 0.097778336 0.026105357 -27.250399 46.990018 6635.2495 1.1912266e+09 0.095854542 0.026437202 -27.352128 46.879498 6637.8901 1.1357364e+09 0.094081530 0.025725478 -27.453439 46.768977 6640.5307 1.0708787e+09 0.093801240 0.025205724 -27.564109 46.648246 6643.1713 1.0071430e+09 0.093150359 0.025218477 -27.678104 46.523887 6645.8118 9.4538968e+08 0.091532723 0.025832006 -27.781852 46.406987 6648.4524 8.9463546e+08 0.089792544 0.027267149 -27.883163 46.291860 6651.0930 8.4271365e+08 0.088674734 0.026555460 -27.989237 46.170871 6653.7336 7.9352319e+08 0.087567378 0.027900222 -28.098033 46.046531 6656.3742 7.4822408e+08 0.085014592 0.028351860 -28.198292 45.931950 6659.0148 7.0930638e+08 0.082515275 0.031831511 -28.294999 45.821430 6661.6554 6.7638064e+08 0.080391773 0.032868754 -28.391706 45.710908 6664.2960 6.4437855e+08 0.078607117 0.031123107 -28.488412 45.600385 6666.9366 6.0817301e+08 0.078360912 0.027091098 -28.589515 45.484838 6669.5772 5.7011437e+08 0.077447232 0.027762918 -28.698328 45.360482 6672.2178 5.3426245e+08 0.077479635 0.027005812 -28.801896 45.240124 6674.8583 5.0465682e+08 0.076174334 0.029678859 -28.898602 45.124998 6677.4989 4.8328803e+08 0.073942458 0.031648935 -28.997117 45.007460 6680.1395 4.5749524e+08 0.074162002 0.029471545 -29.100733 44.883120 6682.7801 4.3099037e+08 0.075054285 0.031020578 -29.200532 44.763361 6685.4207 4.0981873e+08 0.074737269 0.033149203 -29.292634 44.652840 6688.0613 3.9191694e+08 0.072016448 0.033799339 -29.386578 44.540108 6690.7019 3.7122721e+08 0.069823176 0.033035427 -29.490193 44.415769 6693.3425 3.4940745e+08 0.068616405 0.031486600 -29.591166 44.294601 6695.9831 3.2555297e+08 0.068055712 0.029678897 -29.683280 44.184066 6698.6237 3.0780313e+08 0.066634622 0.031073852 -29.775763 44.072419 6701.2642 2.9505536e+08 0.064210579 0.031797166 -29.874198 43.942899 6703.9048 2.8175327e+08 0.063824989 0.035939415 -29.972632 43.814044 6706.5454 2.6599828e+08 0.063445641 0.039395671 -30.071067 43.689705 6709.1860 2.5206114e+08 0.062366157 0.041014230 -30.167335 43.568103 6711.8266 2.3655561e+08 0.059710052 0.041632681 -30.254832 43.457580 6714.4672 2.2393347e+08 0.056841518 0.047338532 -30.342620 43.346689 6717.1078 2.1155696e+08 0.054068101 0.049867602 -30.441055 43.222351 6719.7484 2.0001918e+08 0.051698052 0.050658829 -30.539490 43.097514 6722.3890 1.9224583e+08 0.051170514 0.050124343 -30.637925 42.967995 6725.0296 1.8053618e+08 0.046295985 0.041557559 -30.733777 42.841630 6727.6701 1.6999207e+08 0.044569600 0.040067562 -30.816680 42.731093 6730.3107 1.5591907e+08 0.042847335 0.040804957 -30.899602 42.620529 6732.9513 1.4308031e+08 0.040935727 0.043915345 -30.992785 42.496287 6735.5919 1.3458747e+08 0.041227176 0.049921794 -31.086375 42.371948 6738.2325 1.2825941e+08 0.042542931 0.058601138 -31.184810 42.247609 6740.8731 1.2398707e+08 0.041446715 0.065541895 -31.281851 42.122572 6743.5137 1.2194218e+08 0.036573698 0.074512747 -31.369924 41.993052 6746.1543 1.1598266e+08 0.033505500 0.077193653 -31.459057 41.864592 6748.7949 1.0840957e+08 0.029712781 0.071198715 -31.552311 41.740254 6751.4355 1.0485499e+08 0.025641106 0.073895784 -31.645565 41.615916 6754.0760 98845776. 0.022967673 0.076091180 -31.738818 41.491576 6756.7166 93889457. 0.019616503 0.076010919 -31.830290 41.367236 6759.3572 86723626. 0.020034148 0.075906159 -31.918364 41.242896 6761.9978 78970182. 0.023352474 0.078050664 -32.006438 41.118556 6764.6384 75075065. 0.026726508 0.079513870 -32.094511 40.994219 6767.2790 73207371. 0.026434758 0.081663362 -32.182585 40.867375 6769.9196 72046839. 0.020856426 0.086684663 -32.270659 40.737856 6772.5602 68529835. 0.015876540 0.093089255 -32.358740 40.611192 6775.2008 65239709. 0.010836114 0.099493847 -32.446825 40.486834 6777.8414 61543013. 0.0056102721 0.10589844 -32.534904 40.362488 6780.4819 58604388. 0.00030282298 0.11230303 -32.622978 40.238151 6783.1225 57362720. -0.0049920588 0.11870762 -32.707461 40.113811 6785.7631 54537388. -0.010998910 0.12511222 -32.790354 39.989471 6788.4037 51949752. -0.017812855 0.13151681 -32.877199 39.861179 6791.0443 49240219. -0.026356811 0.13792140 -32.965271 39.731659 6793.6849 47169309. -0.039420344 0.14432599 -33.049030 39.606455 6796.3255 47805940. -0.088696479 0.15073058 -33.131922 39.482117 6798.9661 48394982. -0.054661474 0.15713518 -33.225504 39.341743 6801.6067 47496446. 0.020779827 0.16353977 -33.317710 39.203433