# # 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 = 55.222969 km # Date (UTC) = 2014-01-01T09:50:56.510 # Date (julian) = 2456658.91037627 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.8159 4.9942802e+10 0.035316285 0.031624611 107.10104 34.039502 6500.2549 4.6361861e+10 0.043866341 0.032360082 107.17467 33.913600 6502.6939 4.2719021e+10 0.052632595 0.033095553 107.23847 33.798755 6505.1329 3.9589578e+10 0.061811318 0.033831024 107.30227 33.683911 6507.5719 3.6560614e+10 0.071389206 0.034566495 107.37308 33.556450 6510.0109 3.3644723e+10 0.081415194 0.035301966 107.44486 33.427250 6512.4499 3.1005957e+10 0.092007146 0.036037437 107.51035 33.309366 6514.8889 2.8892592e+10 0.10342575 0.036772908 107.57416 33.194506 6517.3279 2.7033004e+10 0.11561660 0.037508379 107.64147 33.073359 6519.7668 2.5116830e+10 0.12835854 0.038243850 107.71325 32.944157 6522.2058 2.3187418e+10 0.14109739 0.038971152 107.78225 32.819960 6524.6448 2.1440678e+10 0.14861140 0.039656038 107.84605 32.705116 6527.0838 1.9901995e+10 0.15527375 0.040777323 107.90986 32.590252 6529.5228 1.8388083e+10 0.16055147 0.043068572 107.98161 32.461103 6531.9618 1.6904192e+10 0.16594265 0.046628588 108.05339 32.331901 6534.4008 1.5522063e+10 0.16911466 0.048056673 108.11406 32.215734 6536.8398 1.4357347e+10 0.17143705 0.048541872 108.17361 32.100890 6539.2788 1.3318886e+10 0.17297435 0.049981070 108.23998 31.978040 6541.7178 1.2241248e+10 0.17278232 0.051093766 108.31177 31.848819 6544.1567 1.1203980e+10 0.17124354 0.051771505 108.37783 31.726318 6546.5957 1.0291016e+10 0.16939315 0.052954723 108.43738 31.611474 6549.0347 9.5369046e+09 0.16697384 0.054001671 108.49693 31.496630 6551.4737 8.9197275e+09 0.16526020 0.055402034 108.55648 31.381785 6553.9127 8.3333094e+09 0.16296577 0.054876260 108.61603 31.266941 6556.3517 7.7392488e+09 0.16079113 0.053961419 108.68127 31.141107 6558.7907 7.1740733e+09 0.15837576 0.052565541 108.74827 31.011905 6561.2297 6.6466969e+09 0.15562835 0.051259500 108.81023 30.892404 6563.6687 6.2130971e+09 0.15300855 0.049154871 108.86979 30.777561 6566.1077 5.8393617e+09 0.15065485 0.047121982 108.93176 30.658049 6568.5466 5.4529821e+09 0.14911092 0.045269162 108.99876 30.528828 6570.9856 5.0883507e+09 0.14761050 0.044509224 109.06301 30.402988 6573.4246 4.7714929e+09 0.14581846 0.043316727 109.11830 30.288144 6575.8636 4.5065999e+09 0.14346974 0.041508227 109.17360 30.173300 6578.3026 4.2669689e+09 0.14087198 0.038171760 109.23924 30.045760 6580.7416 4.0057982e+09 0.13815272 0.035835409 109.30623 29.916558 6583.1806 3.7492615e+09 0.13603046 0.034930260 109.36393 29.802141 6585.6196 3.5285782e+09 0.13349386 0.033475434 109.41922 29.691551 6588.0586 3.3444201e+09 0.13126467 0.033360372 109.47640 29.579074 6590.4976 3.1897860e+09 0.12806141 0.030136530 109.53595 29.464230 6592.9365 3.0422873e+09 0.12474214 0.027163851 109.59575 29.348058 6595.3755 2.8806970e+09 0.12121690 0.025662516 109.65797 29.218837 6597.8145 2.7135415e+09 0.11837695 0.025465693 109.72017 29.089658 6600.2535 2.5601190e+09 0.11749744 0.025511063 109.77546 28.974814 6602.6925 2.4317871e+09 0.11692457 0.026925674 109.83075 28.859969 6605.1315 2.3211781e+09 0.11633237 0.026775360 109.89056 28.738884 6607.5705 2.2072037e+09 0.11487731 0.024580494 109.95277 28.614467 6610.0095 2.0848715e+09 0.11202646 0.024012036 110.01109 28.495433 6612.4485 1.9828560e+09 0.10998810 0.023985673 110.06638 28.380589 6614.8875 1.8924231e+09 0.10904786 0.023329068 110.12314 28.262713 6617.3264 1.7981697e+09 0.10788886 0.023547482 110.18535 28.133511 6619.7654 1.7093462e+09 0.10741634 0.024710602 110.24671 28.006567 6622.2044 1.6201444e+09 0.10627821 0.024703580 110.30202 27.895962 6624.6434 1.5475090e+09 0.10453805 0.025206729 110.35732 27.785356 6627.0824 1.4774641e+09 0.10245354 0.025348644 110.41426 27.660417 6629.5214 1.4006678e+09 0.10127211 0.026014834 110.47168 27.531215 6631.9604 1.3292495e+09 0.099361232 0.026028322 110.52766 27.414688 6634.3994 1.2639672e+09 0.097696790 0.026355975 110.58295 27.304097 6636.8384 1.2058187e+09 0.095911441 0.026224180 110.63895 27.187365 6639.2774 1.1489551e+09 0.094758088 0.025528940 110.69637 27.058162 6641.7163 1.0905972e+09 0.095050040 0.025150733 110.75328 26.933431 6644.1553 1.0391160e+09 0.093696945 0.025360395 110.80858 26.822841 6646.5943 9.9420671e+08 0.092167529 0.026227792 110.86388 26.712251 6649.0333 9.4651297e+08 0.090484547 0.027587758 110.92106 26.585111 6651.4723 9.0121679e+08 0.089897836 0.026846122 110.97848 26.455909 6653.9113 8.5285111e+08 0.089227403 0.027990938 111.03591 26.330518 6656.3503 8.0371396e+08 0.087471161 0.028330865 111.09335 26.206083 6658.7893 7.5735719e+08 0.085983564 0.031460882 111.14624 26.088457 6661.2283 7.1709549e+08 0.084670382 0.032651212 111.19729 25.973613 6663.6673 6.8621872e+08 0.083289719 0.032298299 111.25062 25.855332 6666.1062 6.5769753e+08 0.083187686 0.026929299 111.30804 25.730915 6668.5452 6.2930535e+08 0.082152427 0.027953273 111.36546 25.606498 6670.9842 5.9469998e+08 0.082049317 0.026872654 111.42289 25.482081 6673.4232 5.6196950e+08 0.081556646 0.028092174 111.47916 25.359383 6675.8622 5.3594489e+08 0.079254934 0.031449805 111.53020 25.244539 6678.3012 5.1513884e+08 0.077933969 0.030735158 111.58124 25.129696 6680.7402 4.9836618e+08 0.078362714 0.029601254 111.63757 25.006921 6683.1792 4.7731460e+08 0.078909343 0.031451171 111.69500 24.882505 6685.6182 4.5271506e+08 0.078431539 0.033357777 111.75242 24.758088 6688.0572 4.2986937e+08 0.075807973 0.033798385 111.80985 24.633670 6690.4961 4.0768779e+08 0.073698341 0.033059004 111.86037 24.518217 6692.9351 3.9244201e+08 0.072510318 0.031679407 111.90717 24.407612 6695.3741 3.7712312e+08 0.071671239 0.029790751 111.95713 24.291459 6697.8131 3.6425541e+08 0.070653367 0.030194167 112.01455 24.162257 6700.2521 3.5344217e+08 0.068558335 0.030854716 112.07097 24.034053 6702.6911 3.3742392e+08 0.067228331 0.033428577 112.12361 23.909636 6705.1301 3.2212107e+08 0.067326259 0.036899880 112.17682 23.785220 6707.5691 3.0552580e+08 0.066895958 0.040105306 112.23424 23.660804 6710.0081 2.9303300e+08 0.065778233 0.040498074 112.29153 23.536389 6712.4471 2.7755351e+08 0.063503894 0.042660000 112.34417 23.411971 6714.8861 2.6593211e+08 0.061300809 0.047370022 112.39681 23.287554 6717.3250 2.5407405e+08 0.059039006 0.049854163 112.44395 23.176124 6719.7640 2.4266942e+08 0.057295571 0.050643955 112.49074 23.065533 6722.2030 2.3384819e+08 0.057247955 0.050354218 112.54097 22.946798 6724.6420 2.2124413e+08 0.053613182 0.044565464 112.59362 22.822363 6727.0810 2.1181913e+08 0.050980724 0.040852471 112.64626 22.697937 6729.5200 2.0613351e+08 0.050169902 0.040698841 112.69890 22.573520 6731.9590 2.0085111e+08 0.048073276 0.043658573 112.75154 22.449104 6734.3980 1.9548328e+08 0.047269190 0.049329655 112.80417 22.324686 6736.8370 1.8989011e+08 0.049068339 0.053519184 112.85681 22.200269 6739.2760 1.8092775e+08 0.049688925 0.063164262 112.90944 22.075853 6741.7149 1.7396427e+08 0.047680772 0.067797743 112.96208 21.951436 6744.1539 1.6663875e+08 0.042563129 0.077912473 113.01472 21.827020 6746.5929 1.6160181e+08 0.039036744 0.072093915 113.06736 21.702603 6749.0319 1.5698942e+08 0.037256489 0.072269196 113.12000 21.578186 6751.4709 1.5191259e+08 0.033237994 0.073910770 113.17263 21.453770 6753.9099 1.4447541e+08 0.030950493 0.075921861 113.22527 21.329354 6756.3489 1.3618958e+08 0.028041977 0.075064630 113.27791 21.204939 6758.7879 1.3000891e+08 0.028108148 0.075371379 113.33055 21.080521 6761.2269 1.2259482e+08 0.029266007 0.077986968 113.38319 20.956104 6763.6659 1.1831301e+08 0.034518483 0.078465627 113.43761 20.816211 6766.1048 1.1296711e+08 0.036569854 0.079950899 113.49221 20.674766 6768.5438 1.0943210e+08 0.032548277 0.082812856 113.54485 20.550349 6770.9828 1.0506226e+08 0.027874630 0.089263473 113.59749 20.425933 6773.4218 1.0006122e+08 0.023529376 0.095179096 113.64558 20.306056 6775.8608 97380045. 0.019186103 0.10109472 113.69343 20.186407 6778.2998 94162073. 0.014847879 0.10701034 113.74542 20.062644 6780.7388 90507511. 0.010517609 0.11292597 113.79805 19.938228 6783.1778 84556076. 0.0061909946 0.11884159 113.85228 19.800067 6785.6168 80484030. 0.0018588152 0.12475721 113.90698 19.657872 6788.0558 76370468. -0.0024741202 0.13067283 113.95521 19.532472 6790.4947 72198021. -0.0068148615 0.13658846 114.00306 19.408055 6792.9337 68500527. -0.011179423 0.14250408 114.05500 19.287729 6795.3727 62521666. -0.015579057 0.14841970 114.10764 19.168098 6797.8117 61315758. -0.020027174 0.15433533 114.16185 19.031204 6800.2507 60269890. -0.024566054 0.16025095 114.21654 18.889011 6802.6897 57493800. -0.029280341 0.16616657 114.26482 18.763468 6805.1287 54145640. -0.034280921 0.17208220 114.31267 18.639051 6807.5677 49817679. -0.040778213 0.17799782 114.36631 18.504212 6810.0067 46813623. -0.056819760 0.18391344 114.42088 18.367714 6812.4457 46586561. -0.052070062 0.18982907 114.46873 18.243297 6814.8846 47323081. -0.036640430 0.19574469 114.51658 18.118880