# # 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 = 50.536152 km # Date (UTC) = 2016-01-24T08:44:43.864 # Date (julian) = 2457411.86439658 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6495.6078 6.5921334e+10 0.031230690 0.030958741 121.86734 45.261427 6498.0173 6.2535967e+10 0.039010836 0.031685334 121.97166 45.102811 6500.4269 5.9129509e+10 0.047050744 0.032411927 122.09143 44.926311 6502.8364 5.5141970e+10 0.055380412 0.033138520 122.21119 44.749828 6505.2460 5.0782458e+10 0.064072934 0.033865112 122.33093 44.573361 6507.6555 4.6874669e+10 0.073364752 0.034591705 122.45070 44.396861 6510.0650 4.3151743e+10 0.083310151 0.035318298 122.56834 44.220359 6512.4746 3.9535219e+10 0.093941446 0.036044891 122.68180 44.043858 6514.8841 3.5861936e+10 0.10518420 0.036771484 122.79527 43.862619 6517.2937 3.2578232e+10 0.11727750 0.037498076 122.90606 43.685018 6519.7032 2.9824707e+10 0.13039275 0.038224669 123.00331 43.533736 6522.1128 2.7403575e+10 0.14412448 0.038946786 123.10566 43.374527 6524.5223 2.5088543e+10 0.15240045 0.039612522 123.21913 43.198027 6526.9319 2.2604458e+10 0.15987402 0.040645058 123.32800 43.021524 6529.3414 2.0243917e+10 0.16578887 0.042779655 123.43299 42.847829 6531.7510 1.8276799e+10 0.17194857 0.046321739 123.52483 42.691172 6534.1605 1.6598757e+10 0.17587693 0.047989463 123.62111 42.528751 6536.5701 1.5069738e+10 0.17761860 0.048300562 123.72828 42.352248 6538.9796 1.3507139e+10 0.17805397 0.049633706 123.83544 42.175746 6541.3892 1.2049022e+10 0.17666484 0.051200324 123.94080 42.002210 6543.7987 1.0883926e+10 0.17397605 0.051591521 124.03265 41.850928 6546.2083 9.9147363e+09 0.17123262 0.052635897 124.12858 41.692918 6548.6178 9.0872051e+09 0.16910547 0.053852147 124.23574 41.516415 6551.0274 8.3593804e+09 0.16677399 0.055245356 124.32881 41.353395 6553.4369 7.6946187e+09 0.16485200 0.055115438 124.41526 41.196708 6555.8465 7.1104931e+09 0.16214464 0.054142137 124.51366 41.023585 6558.2560 6.5781724e+09 0.15979384 0.053021155 124.61102 40.853216 6560.6656 6.0898629e+09 0.15657118 0.051674226 124.69747 40.701934 6563.0751 5.6520932e+09 0.15361883 0.049841490 124.78957 40.540758 6565.4847 5.2568850e+09 0.15071686 0.047768070 124.89043 40.364256 6567.8942 4.8949020e+09 0.14841819 0.045861120 124.97532 40.208078 6570.3037 4.5561598e+09 0.14629711 0.044791687 125.05636 40.056794 6572.7133 4.2497209e+09 0.14381904 0.043821670 125.15631 39.875439 6575.1228 3.9595256e+09 0.14097247 0.042251458 125.24986 39.704269 6577.5324 3.6828381e+09 0.13767294 0.039384116 125.33090 39.552986 6579.9419 3.4290204e+09 0.13427418 0.036552672 125.41894 39.388652 6582.3515 3.1919337e+09 0.13096932 0.035198146 125.51349 39.212151 6584.7610 2.9699930e+09 0.12779932 0.034100947 125.59546 39.059131 6587.1706 2.7855847e+09 0.12447475 0.033196164 125.67651 38.907847 6589.5801 2.6396337e+09 0.12080799 0.031895052 125.75755 38.756565 6591.9897 2.4893902e+09 0.11687736 0.028085174 125.84170 38.599495 6594.3992 2.3413664e+09 0.11349361 0.025953368 125.93625 38.422994 6596.8088 2.1911607e+09 0.11046397 0.025723597 126.01865 38.262711 6599.2183 2.0528237e+09 0.10881898 0.024942861 126.09429 38.111429 6601.6279 1.9499944e+09 0.10880085 0.027341381 126.17421 37.960145 6604.0374 1.8438886e+09 0.10740205 0.026093494 126.25525 37.808861 6606.4470 1.7367636e+09 0.10701150 0.026700780 126.34308 37.627901 6608.8565 1.6269228e+09 0.10416556 0.023709725 126.42686 37.456288 6611.2661 1.5166877e+09 0.10129532 0.024788787 126.50250 37.305005 6613.6756 1.4365438e+09 0.10024686 0.023821473 126.57814 37.153723 6616.0852 1.3691522e+09 0.098558605 0.023295664 126.65378 37.002441 6618.4947 1.2934727e+09 0.097887000 0.024144357 126.73766 36.834680 6620.9043 1.2160562e+09 0.097051064 0.025058592 126.82470 36.659866 6623.3138 1.1401366e+09 0.095393280 0.024608084 126.89494 36.508583 6625.7233 1.0763286e+09 0.093881395 0.026260777 126.96635 36.357301 6628.1329 1.0306381e+09 0.091800938 0.025757053 127.04199 36.206019 6630.5424 9.7620548e+08 0.089972755 0.025929638 127.11993 36.045537 6632.9520 9.1760240e+08 0.088291117 0.026146497 127.20186 35.869072 6635.3615 8.6370493e+08 0.086478762 0.026454006 127.27890 35.712212 6637.7711 8.1678101e+08 0.084911139 0.025783756 127.35454 35.560928 6640.1806 7.8346090e+08 0.084420287 0.025248551 127.42516 35.409645 6642.5902 7.5046716e+08 0.083958458 0.025175848 127.49540 35.258362 6644.9997 7.1940699e+08 0.082585262 0.025451655 127.56564 35.107080 6647.4093 6.8628070e+08 0.081142741 0.026653268 127.63853 34.950096 6649.8188 6.5196232e+08 0.080272280 0.026504973 127.72048 34.773593 6652.2284 6.1514196e+08 0.079986737 0.027313357 127.79148 34.613223 6654.6379 5.7907514e+08 0.079343726 0.027764464 127.85631 34.461941 6657.0475 5.4758778e+08 0.077587652 0.028956178 127.92541 34.310659 6659.4570 5.2256510e+08 0.076209093 0.031739264 127.99565 34.159377 6661.8666 5.0814390e+08 0.074764116 0.032976312 128.06589 34.013162 6664.2761 4.9071694e+08 0.073567847 0.031195790 128.13660 33.864610 6666.6857 4.6812177e+08 0.073587389 0.027042205 128.21224 33.688107 6669.0952 4.3566094e+08 0.072526454 0.028257913 128.28247 33.524235 6671.5048 4.0936370e+08 0.072711749 0.026872542 128.34730 33.372953 6673.9143 3.8820591e+08 0.071993287 0.028826632 128.41565 33.221671 6676.3239 3.7374150e+08 0.069508233 0.031922447 128.48589 33.070389 6678.7334 3.6027798e+08 0.068419962 0.030446082 128.55181 32.919105 6681.1430 3.3610071e+08 0.069379756 0.029767029 128.61664 32.767821 6683.5525 3.1413987e+08 0.069845239 0.031998275 128.69173 32.592624 6685.9620 2.9337729e+08 0.069274621 0.033720997 128.76347 32.427205 6688.3716 2.7596960e+08 0.066304946 0.033870967 128.82830 32.281324 6690.7811 2.5987755e+08 0.064518453 0.033026344 128.89038 32.132683 6693.1907 2.4530822e+08 0.063383590 0.031538670 128.94981 31.981400 6695.6002 2.2603794e+08 0.062722825 0.029749217 129.01993 31.813491 6698.0098 2.1471430e+08 0.061706936 0.030231251 129.09476 31.638876 6700.4193 2.0367066e+08 0.059655891 0.030978751 129.15961 31.487594 6702.8289 1.9381898e+08 0.058656621 0.033538597 129.22324 31.337515 6705.2384 1.8976938e+08 0.058779095 0.037092489 129.28267 31.191635 6707.6480 1.8220319e+08 0.058363359 0.040094004 129.34412 31.043745 6710.0575 1.7716917e+08 0.057158639 0.040507755 129.40895 30.892461 6712.4671 1.7249888e+08 0.054769263 0.042697161 129.47613 30.728038 6714.8766 1.6306984e+08 0.052476085 0.047369313 129.54547 30.551538 6717.2862 1.5530143e+08 0.050118986 0.049856567 129.60555 30.403656 6719.6957 1.4787944e+08 0.048195390 0.050708855 129.66498 30.257323 6722.1053 1.3996120e+08 0.048126758 0.050475067 129.72442 30.106040 6724.5148 1.3577117e+08 0.044675897 0.045627628 129.78616 29.948882 6726.9244 1.2765435e+08 0.041581482 0.040959704 129.85550 29.772380 6729.3339 1.1899847e+08 0.040791062 0.040822867 129.91843 29.615678 6731.7435 1.1236758e+08 0.038632941 0.043229644 129.97787 29.469799 6734.1530 1.0831559e+08 0.037493533 0.049344394 130.03730 29.319619 6736.5626 1.0618001e+08 0.039398369 0.052481776 130.09673 29.168335 6738.9721 1.0366626e+08 0.040362732 0.062672962 130.16553 28.999179 6741.3817 96652801. 0.038631819 0.066847180 130.23131 28.835763 6743.7912 89538810. 0.033617736 0.076384841 130.29075 28.684480 6746.2007 84380901. 0.031209546 0.076653380 130.34743 28.535941 6748.6103 80618469. 0.027955770 0.070227677 130.40146 28.390061 6751.0198 79451879. 0.025241982 0.073720060 130.46554 28.224067 6753.4294 71730033. 0.022064049 0.074366874 130.53380 28.049724 6755.8389 67739974. 0.019646419 0.074237524 130.58783 27.903869 6758.2485 65629554. 0.019208743 0.074230779 130.64521 27.751293 6760.6580 65675790. 0.020226818 0.077316111 130.71455 27.574791 6763.0676 66919051. 0.026057776 0.076643585 130.77420 27.417671 6765.4771 62726704. 0.028671336 0.079618295 130.82822 27.271791 6767.8867 58762317. 0.026534582 0.080982917 130.88225 27.125911 6770.2962 53648909. 0.021336207 0.087598177 130.93629 26.980031 6772.7058 50953293. 0.017017831 0.093442391 130.99870 26.805635 6775.1153 49477897. 0.012726389 0.099286604 131.05863 26.639694 6777.5249 46531921. 0.0081010584 0.10513082 131.11266 26.493814 6779.9344 43953584. 0.0032669547 0.11097503 131.17114 26.335920 6782.3440 42647504. -0.0017255505 0.11681924 131.23418 26.165720 6784.7535 43532116. -0.0067836172 0.12266346 131.28904 26.012691 6787.1631 45866953. -0.012197516 0.12850767 131.34358 25.860335 6789.5726 45589744. -0.019393281 0.13435188 131.40662 25.690137 6791.9822 42161253. -0.031616732 0.14019610 131.46965 25.519938 6794.3917 41424652. -0.076344954 0.14604031 131.53268 25.349740 6796.8013 43245498. -0.046426622 0.15188452 131.58776 25.201040 6799.2108 44492847. 0.015225106 0.15772873 131.64188 25.054145