# # 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 = 53.548023 km # Date (UTC) = 2012-01-15T09:46:33.441 # Date (julian) = 2455941.90733149 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.9994 1.5211334e+11 0.030453679 0.030775296 102.91986 45.667439 6497.3443 1.3178423e+11 0.038394762 0.031482387 103.02108 45.543223 6499.6892 1.1320292e+11 0.046306988 0.032189477 103.12977 45.404577 6502.0340 9.6758467e+10 0.054248972 0.032896568 103.24019 45.262612 6504.3789 8.2232636e+10 0.062283281 0.033603658 103.34582 45.120647 6506.7238 7.0345845e+10 0.070587049 0.034310749 103.45103 44.978682 6509.0687 6.0609093e+10 0.079278864 0.035017840 103.56144 44.836718 6511.4135 5.2836341e+10 0.088589990 0.035724930 103.66988 44.696659 6513.7584 4.6872770e+10 0.098816785 0.036432021 103.76190 44.572443 6516.1033 4.2087565e+10 0.11006326 0.037139111 103.85391 44.448227 6518.4482 3.8086630e+10 0.12234169 0.037846202 103.95819 44.307437 6520.7930 3.4238296e+10 0.13537286 0.038553293 104.06318 44.165472 6523.1379 3.0610902e+10 0.14595803 0.039213292 104.16308 44.023510 6525.4828 2.7505318e+10 0.15360826 0.039727116 104.26196 43.883854 6527.8277 2.5066740e+10 0.16119243 0.041317358 104.35397 43.759638 6530.1725 2.3060856e+10 0.16824310 0.044070232 104.44598 43.635421 6532.5174 2.1257733e+10 0.17395771 0.047116426 104.54554 43.494231 6534.8623 1.9462410e+10 0.17744125 0.048185770 104.64544 43.352266 6537.2072 1.7594118e+10 0.17845281 0.048782888 104.74534 43.210302 6539.5520 1.5970687e+10 0.17818131 0.050311839 104.84334 43.071046 6541.8969 1.4662503e+10 0.17588380 0.051035673 104.93075 42.946829 6544.2418 1.3558487e+10 0.17319582 0.051840478 105.01816 42.822612 6546.5866 1.2563755e+10 0.17086401 0.052947242 105.11780 42.686170 6548.9315 1.1569657e+10 0.16841404 0.053945830 105.21638 42.550427 6551.2764 1.0697814e+10 0.16655727 0.055332770 105.29919 42.426210 6553.6213 9.9758419e+09 0.16446662 0.055022763 105.38200 42.301993 6555.9661 9.3177059e+09 0.16183053 0.054041573 105.47551 42.161742 6558.3110 8.6460628e+09 0.15968352 0.052974279 105.57015 42.019778 6560.6559 7.9425694e+09 0.15673965 0.051682938 105.66479 41.877813 6563.0008 7.3367520e+09 0.15404965 0.049927480 105.75825 41.737618 6565.3456 6.8544444e+09 0.15135072 0.047925918 105.84107 41.613401 6567.6905 6.4459134e+09 0.14906752 0.046033340 105.92388 41.489185 6570.0354 6.0568540e+09 0.14714403 0.044902850 106.01764 41.348533 6572.3803 5.6648046e+09 0.14481808 0.044012389 106.11189 41.206997 6574.7251 5.3137314e+09 0.14204988 0.042506724 106.19010 41.082780 6577.0700 5.0114925e+09 0.13899067 0.040110401 106.26831 40.958564 6579.4149 4.7211505e+09 0.13540100 0.036842417 106.35602 40.819252 6581.7598 4.4224964e+09 0.13231831 0.035366543 106.44541 40.677287 6584.1046 4.1429422e+09 0.12911487 0.034458513 106.52856 40.552161 6586.4495 3.9032535e+09 0.12589485 0.033165485 106.61137 40.427947 6588.7944 3.6837288e+09 0.12289327 0.033114644 106.69520 40.289975 6591.1393 3.4623843e+09 0.11958466 0.029044775 106.77933 40.148010 6593.4841 3.2515564e+09 0.11705529 0.026652126 106.85829 40.021543 6595.8290 3.0745319e+09 0.11428195 0.025709541 106.93650 39.897326 6598.1739 2.8992971e+09 0.11242015 0.025324149 107.02252 39.760695 6600.5188 2.7233261e+09 0.11206877 0.026056336 107.11191 39.618730 6602.8636 2.5600562e+09 0.11138696 0.026779648 107.18871 39.494592 6605.2085 2.4142943e+09 0.11070854 0.026839960 107.26232 39.374977 6607.5534 2.2878860e+09 0.10907572 0.024614286 107.34249 39.241416 6609.8983 2.1549198e+09 0.10607147 0.023972754 107.42662 39.099451 6612.2431 2.0251674e+09 0.10382463 0.024139098 107.50315 38.970303 6614.5880 1.9121994e+09 0.10281879 0.023535384 107.57676 38.846086 6616.9329 1.8136077e+09 0.10136094 0.023428713 107.65614 38.712135 6619.2777 1.7202746e+09 0.10064399 0.024592930 107.74027 38.570171 6621.6226 1.6276126e+09 0.099598332 0.024883076 107.81760 38.439670 6623.9675 1.5471432e+09 0.097505394 0.024850268 107.89122 38.315435 6626.3124 1.4668486e+09 0.096017204 0.026192916 107.96733 38.182808 6628.6572 1.3890128e+09 0.094256982 0.025969943 108.04620 38.040844 6631.0021 1.3116368e+09 0.092313181 0.025930981 108.12206 37.909021 6633.3470 1.2432566e+09 0.090663002 0.026212834 108.19567 37.784805 6635.6919 1.1809073e+09 0.088765258 0.026503543 108.27137 37.655621 6638.0367 1.1157507e+09 0.087329265 0.025670042 108.35024 37.518915 6640.3816 1.0596196e+09 0.087033122 0.025223961 108.42422 37.388403 6642.7265 1.0042550e+09 0.086758140 0.025181426 108.49323 37.264186 6645.0714 9.5943266e+08 0.085760386 0.025485115 108.56224 37.139969 6647.4162 9.1807772e+08 0.084729012 0.026656931 108.63125 37.015752 6649.7611 8.7591422e+08 0.084065847 0.026584533 108.70173 36.888898 6652.1060 8.3210763e+08 0.083802295 0.027279682 108.78059 36.746934 6654.4509 7.8904237e+08 0.083180474 0.027844155 108.85702 36.610484 6656.7957 7.4967594e+08 0.081414258 0.028721829 108.92603 36.490869 6659.1406 7.1182751e+08 0.079960560 0.031805268 108.99538 36.369620 6661.4855 6.8036815e+08 0.078678385 0.032782216 109.06899 36.227656 6663.8304 6.4230081e+08 0.077425032 0.032253101 109.14181 36.088730 6666.1752 6.0998635e+08 0.077528455 0.026942741 109.21082 35.964513 6668.5201 5.8295098e+08 0.076570173 0.027931030 109.27984 35.840269 6670.8650 5.5453033e+08 0.076447336 0.026927901 109.35343 35.698374 6673.2099 5.2712111e+08 0.076060368 0.027773069 109.42616 35.558549 6675.5547 4.9885263e+08 0.074118143 0.030860864 109.49057 35.438934 6677.8996 4.7482098e+08 0.072682568 0.031079340 109.55498 35.319320 6680.2445 4.5678067e+08 0.072863553 0.029494209 109.62787 35.179096 6682.5894 4.3588124e+08 0.073582510 0.030874829 109.70148 35.037132 6684.9342 4.1204482e+08 0.073559800 0.032701500 109.77510 34.895167 6687.2791 3.9411928e+08 0.071576856 0.034187244 109.84762 34.755847 6689.6240 3.7482136e+08 0.068974102 0.033454349 109.91203 34.636230 6691.9688 3.6072870e+08 0.067751482 0.032772679 109.97644 34.516613 6694.3137 3.4365884e+08 0.066840975 0.030821330 110.04458 34.375886 6696.6586 3.2377918e+08 0.066636892 0.029949418 110.11276 34.234880 6699.0035 3.0912489e+08 0.065433686 0.031587231 110.17717 34.115264 6701.3483 2.9520922e+08 0.063671937 0.031920565 110.24157 33.995647 6703.6932 2.7987171e+08 0.063782824 0.035409887 110.30941 33.856606 6706.0381 2.6562985e+08 0.063914340 0.038512700 110.37776 33.714642 6708.3830 2.5336796e+08 0.063521308 0.040460615 110.44230 33.589844 6710.7278 2.4663991e+08 0.061881440 0.040638961 110.50671 33.465627 6713.0727 2.4380734e+08 0.059588187 0.043949618 110.57425 33.331499 6715.4176 2.3798359e+08 0.057356214 0.047805686 110.64260 33.194793 6717.7625 2.2824318e+08 0.055085180 0.049827107 110.71096 33.053398 6720.1073 2.1542639e+08 0.053792184 0.050407330 110.77931 32.911433 6722.4522 2.0399550e+08 0.053454536 0.050046153 110.83920 32.791593 6724.7971 1.9798910e+08 0.049399905 0.043270485 110.89901 32.671978 6727.1420 1.9520686e+08 0.047070521 0.040771255 110.96580 32.534120 6729.4868 1.8845015e+08 0.046239252 0.040720940 111.03415 32.392155 6731.8317 1.8225587e+08 0.044160965 0.043405277 111.09770 32.254997 6734.1766 1.7526252e+08 0.043039363 0.049342975 111.16075 32.118455 6736.5215 1.7403692e+08 0.044704669 0.052326403 111.22056 31.994230 6738.8663 1.7229980e+08 0.045489589 0.062090641 111.28036 31.870014 6741.2112 1.6717231e+08 0.043983141 0.066361059 111.34293 31.735320 6743.5561 1.6108116e+08 0.039353256 0.074798734 111.40603 31.598614 6745.9010 1.5692565e+08 0.037190295 0.078945640 111.47405 31.456981 6748.2458 1.5278232e+08 0.032941247 0.068310206 111.54194 31.315800 6750.5907 1.4835030e+08 0.030062466 0.073012778 111.59716 31.196167 6752.9356 1.4691287e+08 0.027202366 0.073051840 111.65237 31.076533 6755.2805 1.4049094e+08 0.025035259 0.074482386 111.71437 30.942206 6757.6253 1.3732373e+08 0.023146092 0.074842364 111.77745 30.805522 6759.9702 1.2990805e+08 0.023847351 0.076054080 111.84559 30.663771 6762.3151 1.2056141e+08 0.027731121 0.077542607 111.91364 30.522111 6764.6599 1.1606805e+08 0.030602681 0.079514902 111.97674 30.385405 6767.0048 1.1130664e+08 0.030605809 0.081970367 112.03901 30.248698 6769.3497 1.0370867e+08 0.025044445 0.085302425 112.09685 30.111992 6771.6946 95739415. 0.020246515 0.090989776 112.15602 29.973950 6774.0394 85804349. 0.015069169 0.096677127 112.21912 29.831986 6776.3843 77249803. 0.0094375669 0.10236448 112.27944 29.697883 6778.7292 74070250. 0.0034243565 0.10805183 112.33465 29.578249 6781.0741 68531242. -0.0055402289 0.11373918 112.39127 29.455568 6783.4189 63909962. -0.036863662 0.11942653 112.45436 29.318884 6785.7638 58890510. -0.020555768 0.12511388 112.51599 29.180740 6788.1087 56531339. 0.028566071 0.13080123 112.57383 29.038777