# # 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 = 35.376083 km # Date (UTC) = 2010-12-23T08:50:34.664 # Date (julian) = 2455553.86845676 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6504.5994 1.0191631e+11 0.066957081 0.033670132 -19.533310 42.938698 6507.0347 8.7459455e+10 0.077294752 0.034404508 -19.622166 42.828271 6509.4701 7.5332542e+10 0.087867148 0.035138884 -19.711356 42.717844 6511.9054 6.5093265e+10 0.098709604 0.035873260 -19.804165 42.602292 6514.3408 5.6269683e+10 0.10983040 0.036607635 -19.899742 42.482821 6516.7761 4.8820548e+10 0.12129348 0.037342011 -19.990277 42.367639 6519.2115 4.2788472e+10 0.13322259 0.038076387 -20.075220 42.257214 6521.6469 3.7961865e+10 0.14567643 0.038810763 -20.160163 42.146788 6524.0822 3.3961589e+10 0.15265191 0.039456169 -20.245106 42.036363 6526.5176 3.0594555e+10 0.15836863 0.040210705 -20.330049 41.925938 6528.9529 2.7693141e+10 0.16301759 0.042198447 -20.414992 41.815511 6531.3883 2.5206080e+10 0.16742559 0.045793844 -20.499935 41.705084 6533.8237 2.2828291e+10 0.17070753 0.047869614 -20.587276 41.590951 6536.2590 2.0481769e+10 0.17170483 0.048022243 -20.678061 41.471498 6538.6944 1.8296088e+10 0.17357703 0.049494801 -20.765643 41.354908 6541.1297 1.6379776e+10 0.17389289 0.051284460 -20.846350 41.244468 6543.5651 1.4817986e+10 0.17324713 0.051530202 -20.927057 41.134028 6546.0004 1.3545652e+10 0.17108930 0.052464889 -21.007754 41.023601 6548.4358 1.2398878e+10 0.16895901 0.053797790 -21.088450 40.913174 6550.8712 1.1379221e+10 0.16574021 0.055203490 -21.169146 40.805334 6553.3065 1.0469610e+10 0.16291418 0.055180986 -21.249841 40.699155 6555.7419 9.5980451e+09 0.15976577 0.054230014 -21.333104 40.588382 6558.1772 8.7387046e+09 0.15714901 0.053088281 -21.423889 40.464152 6560.6126 7.9091886e+09 0.15381114 0.051721981 -21.512358 40.342150 6563.0479 7.1574021e+09 0.15077029 0.049872903 -21.588817 40.231708 6565.4833 6.5291334e+09 0.14780674 0.047769597 -21.665276 40.121266 6567.9187 6.0090833e+09 0.14545919 0.045840434 -21.745157 40.014267 6570.3540 5.5355433e+09 0.14330370 0.044770861 -21.825853 39.908088 6572.7894 5.1156442e+09 0.14081624 0.043778098 -21.904625 39.799986 6575.2247 4.7453619e+09 0.13783302 0.042149225 -21.981073 39.689560 6577.6601 4.3968120e+09 0.13440825 0.039183521 -22.058462 39.577777 6580.0955 4.0429490e+09 0.13093205 0.036432540 -22.144468 39.453546 6582.5308 3.6887072e+09 0.12765738 0.035149346 -22.230359 39.329467 6584.9662 3.3558475e+09 0.12455862 0.033989202 -22.302600 39.223237 6587.4015 3.0726900e+09 0.12124047 0.033247333 -22.374802 39.117057 6589.8369 2.8421997e+09 0.11764548 0.031385671 -22.449775 39.008104 6592.2722 2.6311945e+09 0.11337174 0.027809094 -22.526234 38.897662 6594.7076 2.4419719e+09 0.10907503 0.025784084 -22.601429 38.787225 6597.1430 2.2773024e+09 0.10441164 0.025677614 -22.673631 38.676800 6599.5783 2.1178334e+09 0.10096561 0.024964513 -22.745833 38.566374 6602.0137 1.9562519e+09 0.099020441 0.027504962 -22.826540 38.447442 6604.4490 1.7864563e+09 0.096754780 0.026337898 -22.907768 38.327989 6606.8844 1.6260325e+09 0.095602024 0.025914737 -22.981329 38.216203 6609.3198 1.4897483e+09 0.092620407 0.023800913 -23.053531 38.105776 6611.7551 1.3779470e+09 0.090102714 0.024476919 -23.125737 37.997444 6614.1905 1.2883207e+09 0.089225839 0.023809268 -23.197949 37.891252 6616.6258 1.2011836e+09 0.087926773 0.023380522 -23.271428 37.782521 6619.0612 1.1173047e+09 0.087410435 0.024540677 -23.352657 37.658291 6621.4965 1.0329866e+09 0.086736897 0.024924866 -23.433250 37.534720 6623.9319 9.5359358e+08 0.085017483 0.024837080 -23.501204 37.424293 6626.3673 8.8661016e+08 0.083771991 0.026122984 -23.569159 37.313866 6628.8026 8.2663431e+08 0.082317767 0.026028965 -23.640058 37.206384 6631.2380 7.7450034e+08 0.080593113 0.025954939 -23.712260 37.100206 6633.6733 7.2172222e+08 0.079159569 0.026269810 -23.785900 36.987911 6636.1087 6.6825255e+08 0.077622707 0.026507544 -23.862350 36.863681 6638.5440 6.1258181e+08 0.076644191 0.025647940 -23.936713 36.743886 6640.9794 5.6434291e+08 0.077189440 0.025150820 -24.004677 36.637693 6643.4148 5.2594504e+08 0.076605833 0.025255243 -24.072641 36.531499 6645.8501 4.8959991e+08 0.075469667 0.025849935 -24.148172 36.409220 6648.2855 4.5709009e+08 0.074311058 0.027155386 -24.224622 36.284988 6650.7208 4.2153490e+08 0.073656348 0.026420257 -24.294285 36.175178 6653.1562 3.8966006e+08 0.073202982 0.027605410 -24.362239 36.068999 6655.5916 3.6364867e+08 0.071578632 0.027854648 -24.431845 35.954799 6658.0269 3.3467375e+08 0.070091098 0.030108809 -24.503517 35.830569 6660.4623 3.1023747e+08 0.068791717 0.032046179 -24.573882 35.712683 6662.8976 2.9103910e+08 0.067763041 0.032540649 -24.641837 35.606504 6665.3330 2.7410788e+08 0.067434236 0.028001520 -24.709798 35.500292 6667.7683 2.5696671e+08 0.067060059 0.027385684 -24.781453 35.376149 6670.2037 2.3914546e+08 0.066592680 0.027234260 -24.853125 35.251919 6672.6391 2.2134980e+08 0.066345206 0.027250010 -24.921445 35.143995 6675.0744 2.0648617e+08 0.064703498 0.029940896 -24.989408 35.037803 6677.5098 1.9626486e+08 0.062422182 0.031633517 -25.059410 34.921691 6679.9451 1.8221617e+08 0.062194195 0.029486754 -25.131082 34.797458 6682.3805 1.6955291e+08 0.062560811 0.030715254 -25.199114 34.681476 6684.8159 1.5831879e+08 0.062011919 0.032695493 -25.262821 34.575298 6687.2512 1.4976974e+08 0.059427459 0.034202798 -25.326855 34.467759 6689.6866 1.4196402e+08 0.056062357 0.033398004 -25.393748 34.348305 6692.1219 1.3322821e+08 0.054056974 0.032623744 -25.460606 34.228954 6694.5573 1.2372615e+08 0.052240284 0.030479965 -25.524319 34.118513 6696.9926 1.1440876e+08 0.050675802 0.030088208 -25.588027 34.008088 6699.4280 1.0819967e+08 0.048150211 0.031195511 -25.656959 33.891737 6701.8634 98557010. 0.044842909 0.032676237 -25.728642 33.772266 6704.2987 91103191. 0.043803699 0.036324238 -25.797630 33.652805 6706.7341 84604972. 0.042180984 0.039724002 -25.864524 33.533352 6709.1694 79124218. 0.039984881 0.041024776 -25.927926 33.418138 6711.6048 75521656. 0.036430161 0.041380318 -25.987387 33.307710 6714.0401 69687919. 0.031404803 0.047306427 -26.048254 33.196243 6716.4755 65192952. 0.025580752 0.049101736 -26.119926 33.076790 6718.9109 63584718. 0.015772158 0.051231016 -26.191491 32.957337 6721.3462 62877251. -0.029951182 0.050408217 -26.258385 32.837884 6723.7816 60548687. 0.0098084415 0.049804845 -26.325278 32.718431 6726.2169 54637938. 0.099092041 0.040953324 -26.392171 32.594538