# # 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 = 53.360893 km # Date (UTC) = 2014-01-15T07:47:39.852 # Date (julian) = 2456672.82476681 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6511.3933 4.8144091e+10 0.10195717 0.035718830 136.97935 40.235979 6513.4520 4.4954531e+10 0.11216655 0.036339634 137.06244 40.111338 6515.5108 4.1468188e+10 0.12239184 0.036960438 137.14553 39.986698 6517.5695 3.7765257e+10 0.13261630 0.037581241 137.22426 39.857690 6519.6282 3.4425484e+10 0.14298387 0.038202045 137.30274 39.728433 6521.6869 3.1592666e+10 0.15355999 0.038822848 137.37041 39.614932 6523.7457 2.9253040e+10 0.15931097 0.039363924 137.43504 39.505874 6525.8044 2.7228854e+10 0.16354857 0.039690411 137.50387 39.390670 6527.8631 2.5225609e+10 0.16815657 0.041343106 137.58235 39.261414 6529.9218 2.3186387e+10 0.17162653 0.043704202 137.66083 39.132796 6531.9806 2.1077805e+10 0.17384158 0.046655912 137.73931 39.008155 6534.0393 1.9195057e+10 0.17430281 0.047955550 137.81780 38.883514 6536.0980 1.7620961e+10 0.17371911 0.047878206 137.88281 38.770091 6538.1568 1.6357707e+10 0.17484170 0.049233010 137.94743 38.656992 6540.2155 1.5299483e+10 0.17493181 0.050955899 138.01664 38.538169 6542.2742 1.4216135e+10 0.17327825 0.051106341 138.09050 38.413530 6544.3329 1.3107214e+10 0.17178417 0.051914427 138.16436 38.287368 6546.3917 1.1998643e+10 0.16998463 0.052786797 138.23822 38.158110 6548.4504 1.1035490e+10 0.16837818 0.053802146 138.31058 38.032157 6550.5091 1.0241364e+10 0.16672083 0.055112836 138.37520 37.923099 6552.5678 9.5819109e+09 0.16504389 0.055443842 138.43983 37.814040 6554.6266 8.9775684e+09 0.16294567 0.054845528 138.50764 37.691089 6556.6853 8.3555346e+09 0.16083194 0.053912375 138.57688 37.561833 6558.7440 7.7632911e+09 0.15849070 0.052605311 138.64371 37.443113 6560.8027 7.2944376e+09 0.15599503 0.051550533 138.70834 37.334055 6562.8615 6.9052646e+09 0.15383621 0.050060184 138.77318 37.224070 6564.9202 6.5054055e+09 0.15173622 0.048354564 138.84242 37.094814 6566.9789 6.0902649e+09 0.14984344 0.046629111 138.91166 36.965557 6569.0376 5.6965077e+09 0.14795233 0.044854875 138.97330 36.854068 6571.0964 5.3745945e+09 0.14668243 0.044476953 139.03389 36.745010 6573.1551 5.0937832e+09 0.14505805 0.043533016 139.09797 36.627794 6575.2138 4.7995382e+09 0.14316242 0.042160170 139.16722 36.498538 6577.2726 4.5088690e+09 0.14099051 0.039792254 139.23440 36.374082 6579.3313 4.2632407e+09 0.13832568 0.036888377 139.29499 36.265024 6581.3900 4.0606177e+09 0.13597040 0.035478509 139.35557 36.155966 6583.4487 3.8647277e+09 0.13387825 0.034794537 139.42276 36.035035 6585.5075 3.6531207e+09 0.13170256 0.033565069 139.49201 35.910395 6587.5662 3.4492277e+09 0.12974678 0.033283815 139.55609 35.792631 6589.6249 3.2800063e+09 0.12732211 0.031806203 139.61668 35.679534 6591.6836 3.1414608e+09 0.12422337 0.028430501 139.67775 35.565053 6593.7424 2.9961834e+09 0.12148429 0.026412044 139.74238 35.440412 6595.8011 2.8444344e+09 0.11865947 0.025706647 139.80701 35.315772 6597.8598 2.7052510e+09 0.11681722 0.025451400 139.86778 35.202139 6599.9185 2.5878474e+09 0.11620442 0.024984976 139.92838 35.089041 6601.9773 2.4852243e+09 0.11589908 0.027505931 139.99090 34.970426 6604.0360 2.3681976e+09 0.11466965 0.026092653 140.05552 34.845785 6606.0947 2.2506789e+09 0.11460767 0.027333742 140.11763 34.726003 6608.1535 2.1464581e+09 0.11259534 0.023728314 140.17418 34.616946 6610.2122 2.0635932e+09 0.10985963 0.024205712 140.23073 34.507889 6612.2709 1.9791686e+09 0.10797954 0.024118340 140.29403 34.381945 6614.3296 1.8858841e+09 0.10713221 0.023713388 140.35866 34.252687 6616.3884 1.7980468e+09 0.10581601 0.023343252 140.41788 34.136958 6618.4471 1.7245832e+09 0.10522429 0.024108399 140.47443 34.027900 6620.5058 1.6618364e+09 0.10446144 0.024930195 140.53165 33.915819 6622.5645 1.5872580e+09 0.10316153 0.024607731 140.59165 33.791178 6624.6233 1.5091924e+09 0.10163288 0.025195941 140.65156 33.666970 6626.6820 1.4389315e+09 0.099895686 0.025721981 140.70812 33.557897 6628.7407 1.3836223e+09 0.098515844 0.026003834 140.76468 33.448824 6630.7994 1.3322334e+09 0.096752880 0.025930272 140.82314 33.328613 6632.8582 1.2736954e+09 0.095291055 0.026135247 140.88314 33.199378 6634.9169 1.2142795e+09 0.093747354 0.026393726 140.94182 33.077920 6636.9756 1.1653140e+09 0.091995945 0.026170877 140.99837 32.968846 6639.0344 1.1234832e+09 0.090667502 0.025615797 141.05493 32.859771 6641.0931 1.0829925e+09 0.091138966 0.025148617 141.11463 32.736526 6643.1518 1.0382394e+09 0.090664976 0.025215539 141.17465 32.611887 6645.2105 9.9066614e+08 0.089863765 0.025550311 141.22908 32.498843 6647.2693 9.4836185e+08 0.088921352 0.026579546 141.28159 32.389785 6649.3280 9.1058639e+08 0.088004266 0.027181577 141.33612 32.276544 6651.3867 8.7469623e+08 0.087701198 0.026780524 141.39612 32.151904 6653.4454 8.3769602e+08 0.087316202 0.027753086 141.45613 32.027263 6655.5042 7.9875347e+08 0.085981004 0.027818538 141.51614 31.902623 6657.5629 7.5868857e+08 0.084501858 0.029554047 141.57616 31.777982 6659.6216 7.2556106e+08 0.083129884 0.031704928 141.62915 31.664146 6661.6803 6.9579496e+08 0.081758289 0.032881464 141.68166 31.551049 6663.7391 6.6596361e+08 0.080489364 0.032278398 141.73550 31.432639 6665.7978 6.3986654e+08 0.080389033 0.027239911 141.79089 31.307997 6667.8565 6.1476660e+08 0.079687807 0.027418074 141.84544 31.187938 6669.9153 5.9556493e+08 0.078914364 0.027415677 141.89795 31.078880 6671.9740 5.7378391e+08 0.078560031 0.026879228 141.95046 30.969823 6674.0327 5.4800666e+08 0.077699306 0.028982378 142.00911 30.848015 6676.0914 5.2320434e+08 0.075428515 0.031772650 142.06911 30.723375 6678.1502 5.0203862e+08 0.074395276 0.030836183 142.12160 30.608894 6680.2089 4.8507754e+08 0.074530501 0.029486523 142.17008 30.499836 6682.2676 4.7266254e+08 0.074950135 0.030629007 142.21977 30.388032 6684.3263 4.5511486e+08 0.074893664 0.032670652 142.27516 30.263391 6686.3851 4.3309199e+08 0.073957230 0.033985120 142.33048 30.138931 6688.4438 4.1369964e+08 0.071487016 0.033887632 142.37896 30.029849 6690.5025 3.9485904e+08 0.070207046 0.033058275 142.42742 29.920791 6692.5612 3.8470500e+08 0.069364763 0.032113592 142.47960 29.803408 6694.6200 3.7166498e+08 0.068736609 0.030392108 142.53500 29.678767 6696.6787 3.5670117e+08 0.068477558 0.029957770 142.59039 29.554127 6698.7374 3.3971572e+08 0.067502372 0.031230014 142.64579 29.429487 6700.7961 3.2629430e+08 0.065892039 0.031258244 142.69978 29.307991 6702.8549 3.1635762e+08 0.065421508 0.033559352 142.74825 29.198933 6704.9136 3.0560539e+08 0.065653131 0.036626180 142.79672 29.089875 6706.9723 2.9617166e+08 0.065325557 0.040138666 142.85022 28.969504 6709.0311 2.8111768e+08 0.064873113 0.041112791 142.90561 28.844864 6711.0898 2.6887864e+08 0.063292580 0.040794379 142.96101 28.722808 6713.1485 2.5752084e+08 0.061447387 0.044223746 143.01641 28.602783 6715.2072 2.4988324e+08 0.059586613 0.047590542 143.06749 28.487075 6717.2660 2.4201879e+08 0.057627595 0.049857818 143.11192 28.378017 6719.3247 2.3538645e+08 0.055702016 0.051061362 143.15635 28.268959 6721.3834 2.2846708e+08 0.056048719 0.050419423 143.21085 28.145599 6723.4421 2.2080653e+08 0.054650206 0.049615533 143.26624 28.020958 6725.5009 2.1283937e+08 0.050655486 0.041263152 143.31817 27.896318 6727.5596 2.0087294e+08 0.049611878 0.040214847 143.36895 27.771677 6729.6183 1.9306508e+08 0.048756219 0.040633301 143.41837 27.656159 6731.6770 1.8671645e+08 0.047073053 0.043097473 143.46684 27.547102 6733.7358 1.8217440e+08 0.046027495 0.047919036 143.51556 27.436842 6735.7945 1.8069919e+08 0.047278365 0.050136853 143.56634 27.316817 6737.8532 1.7511567e+08 0.048610908 0.056853540 143.61712 27.196793 6739.9120 1.6767317e+08 0.048595917 0.063942609 143.66790 27.072413 6741.9707 1.5980369e+08 0.046606750 0.068527127 143.71868 26.947773 6744.0294 1.5102259e+08 0.042041037 0.077816157 143.76946 26.823133 6746.0881 1.4726293e+08 0.040712223 0.077962636 143.82024 26.698492 6748.1469 1.4052717e+08 0.036989439 0.067789531 143.87102 26.573852 6750.2056 1.3241861e+08 0.034297379 0.072355178 143.92180 26.449211 6752.2643 1.2576557e+08 0.031533613 0.073828618 143.96976 26.333297 6754.3230 1.2315881e+08 0.030208573 0.075693984 144.01419 26.228279 6756.3818 1.2174208e+08 0.027587405 0.075149248 144.05862 26.123261 6758.4405 1.1993558e+08 0.027499268 0.074636801 144.10920 25.999229 6760.4992 1.1381605e+08 0.027864562 0.077013258 144.15998 25.874588 6762.5579 1.0638736e+08 0.032241018 0.077150834 144.21076 25.749947 6764.6167 1.0200184e+08 0.034719411 0.079512829 144.26154 25.625307 6766.6754 95986565. 0.035107337 0.081241510 144.31232 25.503605 6768.7341 94328536. 0.030823434 0.083497579 144.36310 25.383581 6770.7929 94165670. 0.026753174 0.088802714 144.41171 25.261386 6772.8516 90378221. 0.022868011 0.093796031 144.45788 25.136745 6774.9103 90748239. 0.019007265 0.098789348 144.50544 25.013509 6776.9690 85340669. 0.015118543 0.10378266 144.55622 24.893486 6779.0278 80725549. 0.011236784 0.10877598 144.60700 24.772826 6781.0865 77268428. 0.0073704287 0.11376930 144.65778 24.648185 6783.1452 74637280. 0.0034914815 0.11876262 144.70856 24.523544 6785.2039 75421256. -0.00033673003 0.12375593 144.75485 24.403388 6787.2627 71107859. -0.0043643729 0.12874925 144.80101 24.283364 6789.3214 69138369. -0.0084511176 0.13374257 144.84718 24.159623 6791.3801 63663400. -0.012943663 0.13873588 144.89334 24.034982 6793.4388 63747138. -0.017576111 0.14372920 144.94246 23.913292 6795.4976 61334106. -0.024054781 0.14872252 144.99324 23.793268 6797.5563 55700724. -0.045047155 0.15371583 145.04183 23.671061 6799.6150 52377607. -0.035525002 0.15870915 145.08799 23.546421 6801.6737 49031008. -0.0067129220 0.16370247 145.13415 23.423196