# # 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 = 43.905121 km # Date (UTC) = 2016-12-22T09:39:20.134 # Date (julian) = 2457744.90231636 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6516.3510 4.8458989e+10 0.13599771 0.037213820 112.34003 27.395664 6518.4513 4.3968136e+10 0.14649234 0.037847159 112.39131 27.296768 6520.5516 3.9827595e+10 0.15706588 0.038480499 112.43955 27.194818 6522.6519 3.6066208e+10 0.16593002 0.039087966 112.48717 27.092245 6524.7522 3.2812993e+10 0.17128023 0.039694192 112.53479 26.990042 6526.8525 2.9876856e+10 0.17498449 0.040561860 112.58241 26.891146 6528.9528 2.7197974e+10 0.17720252 0.042198360 112.63003 26.792249 6531.0531 2.4721228e+10 0.17914807 0.045306000 112.67765 26.693353 6533.1534 2.2412906e+10 0.18149876 0.047584786 112.72526 26.594456 6535.2537 2.0402274e+10 0.18147016 0.048114234 112.77288 26.495560 6537.3540 1.8562784e+10 0.18101515 0.048852130 112.82050 26.396664 6539.4543 1.6972247e+10 0.18011518 0.050193567 112.86811 26.297768 6541.5546 1.5522809e+10 0.17820765 0.051146672 112.91573 26.198872 6543.6549 1.4155728e+10 0.17606322 0.051553778 112.96002 26.099964 6545.7552 1.2908340e+10 0.17372542 0.052462333 113.00398 26.001054 6547.8555 1.1728194e+10 0.17180730 0.053612699 113.04860 25.902147 6549.9558 1.0671651e+10 0.16947611 0.054940326 113.09621 25.803251 6552.0561 9.7469815e+09 0.16630752 0.055572644 113.14383 25.704354 6554.1564 8.9168228e+09 0.16236458 0.054835662 113.19145 25.605458 6556.2567 8.1900561e+09 0.15884167 0.053975385 113.23906 25.506561 6558.3570 7.5337022e+09 0.15583094 0.052935094 113.28668 25.407665 6560.4573 6.9445125e+09 0.15277040 0.051861993 113.33166 25.308769 6562.5576 6.4093035e+09 0.14989537 0.050349326 113.37561 25.209873 6564.6579 5.9197376e+09 0.14708409 0.048473437 113.41956 25.110977 6566.7582 5.4736050e+09 0.14468103 0.046753974 113.46352 25.015695 6568.8585 5.0690338e+09 0.14239551 0.044982500 113.50749 24.920449 6570.9588 4.7222009e+09 0.14059567 0.044520344 113.55240 24.824252 6573.0591 4.4007056e+09 0.13861789 0.043610061 113.60001 24.725356 6575.1594 4.1166702e+09 0.13621973 0.042214788 113.64763 24.626460 6577.2597 3.8579271e+09 0.13347609 0.039812462 113.69330 24.527563 6579.3600 3.6207210e+09 0.13035843 0.036872596 113.73726 24.428666 6581.4603 3.4107952e+09 0.12762164 0.035457228 113.78121 24.329770 6583.5606 3.2101084e+09 0.12510873 0.034737923 113.82517 24.230874 6585.6609 3.0205416e+09 0.12249722 0.033442411 113.86912 24.131978 6587.7612 2.8409549e+09 0.12024828 0.033327018 113.91308 24.033081 6589.8615 2.6752086e+09 0.11753140 0.031336876 113.95704 23.934172 6591.9618 2.5286442e+09 0.11427715 0.028116654 114.00099 23.835262 6594.0621 2.3880046e+09 0.11111953 0.026138446 114.04495 23.737603 6596.1624 2.2565417e+09 0.10758443 0.025726536 114.08891 23.642370 6598.2627 2.1294937e+09 0.10484510 0.025281755 114.13286 23.547136 6600.3630 2.0135046e+09 0.10349198 0.025736083 114.17681 23.449668 6602.4633 1.9059042e+09 0.10222883 0.027121295 114.22077 23.350771 6604.5636 1.8014520e+09 0.10095544 0.026405906 114.26472 23.251875 6606.6639 1.7107060e+09 0.10021536 0.026311011 114.30867 23.152978 6608.7642 1.6216117e+09 0.097618822 0.023712167 114.35263 23.054082 6610.8645 1.5412355e+09 0.094860526 0.024828957 114.39658 22.955732 6612.9648 1.4579021e+09 0.093941887 0.023599916 114.44055 22.860486 6615.0651 1.3781560e+09 0.092919827 0.023253533 114.48451 22.765240 6617.1654 1.3079601e+09 0.091753541 0.023494074 114.52693 22.668461 6619.2657 1.2412739e+09 0.091186940 0.024590014 114.56722 22.569565 6621.3660 1.1798181e+09 0.090369980 0.024968148 114.60751 22.470669 6623.4663 1.1164276e+09 0.088838751 0.024664567 114.65032 22.374300 6625.5666 1.0643337e+09 0.087638527 0.026073676 114.69428 22.279066 6627.6669 1.0145937e+09 0.085808806 0.025574406 114.73823 22.183833 6629.7672 9.6267293e+08 0.084597476 0.025970401 114.78350 22.073217 6631.8675 9.0969798e+08 0.082884444 0.026018881 114.82883 21.961957 6633.9678 8.5467747e+08 0.081456623 0.026321212 114.87343 21.859239 6636.0680 8.0744510e+08 0.079994862 0.026523327 114.91738 21.764006 6638.1683 7.6462751e+08 0.078969650 0.025664308 114.96134 21.668772 6640.2686 7.2399129e+08 0.078921260 0.025237783 115.00235 21.570587 6642.3689 6.8804764e+08 0.078746923 0.025166794 115.04265 21.471677 6644.4692 6.5508696e+08 0.077603056 0.025394321 115.08295 21.373036 6646.5695 6.2212476e+08 0.076476432 0.026214961 115.12324 21.277803 6648.6698 5.9294830e+08 0.075405199 0.027412678 115.16353 21.182570 6650.7701 5.6355473e+08 0.075138163 0.026431544 115.20508 21.086081 6652.8704 5.3813196e+08 0.075043559 0.027490014 115.24903 20.987185 6654.9707 5.1950423e+08 0.074154863 0.027622683 115.29298 20.888288 6657.0710 4.9605198e+08 0.072537589 0.028983509 115.33778 20.784340 6659.1713 4.7004637e+08 0.071320757 0.031798858 115.38311 20.677201 6661.2716 4.4063147e+08 0.070328036 0.032673297 115.42750 20.572275 6663.3719 4.1163300e+08 0.069420215 0.032380142 115.46779 20.477028 6665.4722 3.8951344e+08 0.069350899 0.027773367 115.50809 20.381782 6667.5725 3.6977906e+08 0.069040987 0.027313757 115.54839 20.284869 6669.6728 3.5090546e+08 0.068475654 0.027664664 115.58868 20.185973 6671.7731 3.3296879e+08 0.068580788 0.026876366 115.62897 20.087077 6673.8734 3.1933908e+08 0.068081118 0.028765485 115.67292 19.982194 6675.9737 3.0344343e+08 0.066149511 0.031663391 115.71825 19.875055 6678.0740 2.8676449e+08 0.065443049 0.030887106 115.76207 19.771481 6680.1743 2.7066589e+08 0.065986265 0.029479059 115.80236 19.676248 6682.2746 2.5370742e+08 0.066984603 0.030634360 115.84265 19.581016 6684.3749 2.4493562e+08 0.067318315 0.032673117 115.88085 19.485782 6686.4752 2.3652556e+08 0.066554970 0.034037571 115.91748 19.390548 6688.5755 2.2635837e+08 0.064232247 0.033918038 115.95411 19.295314 6690.6758 2.1898103e+08 0.063215410 0.033038415 115.99804 19.190076 6692.7761 2.0663138e+08 0.062748988 0.031864080 116.04338 19.082920 6694.8764 1.9697218e+08 0.062543892 0.030032695 116.08663 18.979174 6696.9767 1.8347490e+08 0.062643983 0.030081587 116.12692 18.880278 6699.0770 1.7006972e+08 0.062074390 0.031519378 116.16722 18.781382 6701.1773 1.6291372e+08 0.060934626 0.031669601 116.21095 18.676858 6703.2776 1.5784357e+08 0.061357692 0.034369883 116.25627 18.569719 6705.3779 1.5715054e+08 0.061878756 0.037340437 116.29938 18.465626 6707.4782 1.4784473e+08 0.062243086 0.040118325 116.33600 18.370392 6709.5785 1.3821502e+08 0.062167672 0.040764591 116.37263 18.275158 6711.6788 1.3070648e+08 0.060970351 0.041464517 116.41383 18.173664 6713.7791 1.2226473e+08 0.059745522 0.046504442 116.45916 18.066525 6715.8794 1.1910023e+08 0.058611365 0.048278006 116.50363 17.960564 6717.9797 1.1301834e+08 0.057362501 0.049813670 116.54026 17.865318 6720.0800 1.0997275e+08 0.056829335 0.050410498 116.57689 17.770071 6722.1803 1.0771512e+08 0.057242703 0.050382320 116.61674 17.670434 6724.2806 1.0293701e+08 0.055321872 0.047583577 116.66207 17.563295 6726.3809 98955014. 0.052754667 0.040954803 116.70739 17.456156 6728.4812 91702289. 0.053250915 0.040310096 116.74884 17.349017 6730.5815 86444444. 0.052585608 0.041176187 116.79005 17.241878 6732.6818 84175508. 0.051789148 0.043865723 116.82889 17.142768 6734.7821 79446589. 0.052490497 0.049306544 116.86552 17.051197 6736.8824 75931139. 0.054910669 0.053690890 116.90215 16.959626 6738.9827 73795424. 0.056232177 0.062731180 116.94238 16.855824 6741.0830 68913547. 0.056202466 0.065995341 116.98359 16.748684 6743.1833 66274647. 0.053357673 0.072283802 117.02627 16.641545 6745.2836 63052468. 0.051651354 0.078686098 117.07160 16.534405 6747.3839 58426077. 0.048817924 0.067229009 117.11693 16.427266 6749.4842 58356401. 0.048164943 0.072145367 117.15842 16.320127 6751.5845 57869555. 0.045873669 0.073958787 117.19962 16.212987 6753.6848 56943796. 0.045148875 0.075193319 117.23852 16.111859 6755.7851 57229491. 0.043800946 0.074261144 117.27515 16.016613 6757.8854 53036797. 0.045838618 0.074053213 117.31178 15.921367 6759.9857 49753199. 0.050298378 0.076057811 117.35196 15.820091 6762.0860 46007030. 0.060307542 0.077912183 117.39317 15.717072 6764.1863 44126930. 0.072396637 0.079492209 117.43438 15.612615 6766.2866 39429797. 0.12353198 0.080361946 117.47558 15.505476 6768.3869 39742346. 0.084307093 0.082248026 117.51679 15.398337 6772.5875 42192464. -0.0090303998 0.093155413 117.59921 15.184059