# # 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 = 51.411177 km # Date (UTC) = 2016-01-22T08:49:10.673 # Date (julian) = 2457409.86748464 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.8373 1.1717345e+11 0.026620033 0.030424853 121.30420 43.592358 6496.1621 1.0195607e+11 0.034041416 0.031125893 121.40952 43.431770 6498.4869 8.8514051e+10 0.041290819 0.031826934 121.50856 43.285806 6500.8117 7.7120964e+10 0.048459172 0.032527974 121.61262 43.128148 6503.1365 6.8245588e+10 0.055767810 0.033229015 121.72209 42.957855 6505.4613 6.1683589e+10 0.063536375 0.033930055 121.81413 42.807913 6507.7861 5.6665974e+10 0.072007092 0.034631096 121.90275 42.661950 6510.1109 5.2167537e+10 0.081247018 0.035332136 122.01051 42.488063 6512.4357 4.8037644e+10 0.091344195 0.036033177 122.11427 42.320018 6514.7606 4.3957775e+10 0.10230310 0.036734217 122.20290 42.174056 6517.0854 4.0259432e+10 0.11423890 0.037435257 122.29893 42.019440 6519.4102 3.6702829e+10 0.12702498 0.038136298 122.40841 41.849143 6521.7350 3.3331750e+10 0.14068816 0.038837338 122.50305 41.696159 6524.0598 3.0489848e+10 0.14939985 0.039448205 122.59167 41.550197 6526.3846 2.8307452e+10 0.15751441 0.040071308 122.68029 41.404235 6528.7094 2.6291889e+10 0.16519831 0.042005269 122.76891 41.258273 6531.0342 2.4081570e+10 0.17119836 0.045278506 122.86511 41.091052 6533.3590 2.1838704e+10 0.17686699 0.047672170 122.96041 40.926386 6535.6839 1.9740839e+10 0.17825304 0.047927644 123.04903 40.780424 6538.0087 1.7986917e+10 0.17924716 0.049160900 123.13602 40.632835 6540.3335 1.6579264e+10 0.17823830 0.051011644 123.21943 40.481659 6542.6583 1.5138842e+10 0.17535337 0.051252160 123.30831 40.322956 6544.9831 1.3724457e+10 0.17333413 0.052441854 123.40562 40.152662 6547.3079 1.2441239e+10 0.17079414 0.053404456 123.49251 40.000605 6549.6327 1.1337282e+10 0.16863745 0.054611069 123.57592 39.854643 6551.9575 1.0480123e+10 0.16674953 0.055571858 123.65932 39.708679 6554.2823 9.7286649e+09 0.16410150 0.054838305 123.74273 39.562715 6556.6071 9.0669541e+09 0.16170236 0.053923863 123.82614 39.416753 6558.9320 8.4137609e+09 0.15877766 0.052445161 123.90956 39.270754 6561.2568 7.7357143e+09 0.15578600 0.051246151 124.00074 39.100629 6563.5816 7.0886400e+09 0.15292449 0.049255613 124.08740 38.938860 6565.9064 6.5108488e+09 0.15021933 0.047289179 124.16559 38.792895 6568.2312 6.0660087e+09 0.14818797 0.045559134 124.24379 38.646932 6570.5560 5.6830367e+09 0.14600482 0.044687190 124.32198 38.500970 6572.8808 5.3215440e+09 0.14352397 0.043725732 124.40018 38.355008 6575.2056 4.9851091e+09 0.14054917 0.042168394 124.47837 38.209047 6577.5304 4.6826603e+09 0.13711423 0.039387175 124.55657 38.063083 6579.8553 4.4193493e+09 0.13342159 0.036600327 124.63476 37.917119 6582.1801 4.1872442e+09 0.12976862 0.035244795 124.71295 37.771156 6584.5049 3.9591113e+09 0.12609634 0.034240487 124.79114 37.625194 6586.8297 3.7055142e+09 0.12280201 0.033160571 124.87461 37.460767 6589.1545 3.4494085e+09 0.11993791 0.032739473 124.95896 37.293263 6591.4793 3.2115243e+09 0.11708844 0.028661069 125.03716 37.147299 6593.8041 3.0037554e+09 0.11478517 0.026354637 125.11433 37.001335 6596.1289 2.8255370e+09 0.11203213 0.025726688 125.18731 36.855374 6598.4537 2.6514866e+09 0.11020314 0.025190535 125.26029 36.709412 6600.7785 2.4893670e+09 0.10992354 0.026590425 125.33327 36.563449 6603.1034 2.3440463e+09 0.10897681 0.026602086 125.40625 36.417486 6605.4282 2.2086663e+09 0.10826048 0.027024242 125.47924 36.271522 6607.7530 2.0813072e+09 0.10636496 0.024220145 125.55221 36.125570 6610.0778 1.9627196e+09 0.10322740 0.024077305 125.62519 35.979633 6612.4026 1.8523255e+09 0.10098806 0.024019944 125.69816 35.833683 6614.7274 1.7472444e+09 0.099825876 0.023439335 125.77114 35.687721 6617.0522 1.6531069e+09 0.098291483 0.023456563 125.84097 35.541758 6619.3770 1.5665153e+09 0.097468062 0.024616886 125.90874 35.395794 6621.7018 1.4832181e+09 0.096259112 0.024856818 125.98008 35.249831 6624.0267 1.4086005e+09 0.094072765 0.024876577 126.05307 35.103869 6626.3515 1.3322629e+09 0.092493097 0.026143107 126.12204 34.957907 6628.6763 1.2589619e+09 0.090696347 0.025977669 126.18981 34.811945 6631.0011 1.1943433e+09 0.088644250 0.025930876 126.25758 34.665981 6633.3259 1.1335588e+09 0.086934515 0.026209151 126.32535 34.520018 6635.6507 1.0796906e+09 0.084950979 0.026497371 126.39312 34.378912 6637.9755 1.0276320e+09 0.083502820 0.025683634 126.46088 34.238096 6640.3003 9.7781757e+08 0.083347098 0.025233907 126.52865 34.092131 6642.6251 9.3243310e+08 0.083340182 0.025177278 126.59642 33.946166 6644.9499 8.9075736e+08 0.082604894 0.025446275 126.66419 33.800205 6647.2748 8.4745347e+08 0.081664122 0.026582441 126.73196 33.654243 6649.5996 8.0513802e+08 0.080949096 0.026807213 126.79973 33.508281 6651.9244 7.6359655e+08 0.080712993 0.027192568 126.86615 33.362318 6654.2492 7.2466928e+08 0.080161980 0.027930069 126.92871 33.216355 6656.5740 6.8891103e+08 0.078425114 0.028527213 126.99303 33.072163 6658.8988 6.5271032e+08 0.076939331 0.031655136 127.06080 32.931413 6661.2236 6.2112524e+08 0.075680762 0.032648844 127.12637 32.788466 6663.5484 5.8896091e+08 0.074447337 0.032331229 127.18893 32.642503 6665.8732 5.6337877e+08 0.074303187 0.027116294 127.25148 32.496540 6668.1981 5.3793350e+08 0.073527951 0.027646036 127.31404 32.350579 6670.5229 5.0457350e+08 0.073219925 0.027086399 127.38625 32.193940 6672.8477 4.7265184e+08 0.072994813 0.027370926 127.46532 32.029728 6675.1725 4.4304880e+08 0.071418372 0.030128725 127.52885 31.882684 6677.4973 4.1822165e+08 0.069564414 0.031651263 127.59140 31.736721 6679.8221 4.0060034e+08 0.069537595 0.029588422 127.65396 31.590758 6682.1469 3.7847204e+08 0.070394818 0.030536791 127.71652 31.445338 6684.4717 3.5878864e+08 0.070520639 0.032678030 127.77907 31.304589 6686.7965 3.4419010e+08 0.069077567 0.034224521 127.84066 31.162871 6689.1213 3.2580596e+08 0.066137357 0.033906794 127.89800 31.016908 6691.4462 3.1323828e+08 0.065168259 0.032895999 127.95674 30.870944 6693.7710 3.0029070e+08 0.064239364 0.031339599 128.01929 30.724981 6696.0958 2.8963165e+08 0.064154975 0.029715579 128.08185 30.580839 6698.4206 2.7956980e+08 0.063283688 0.030795122 128.14440 30.440091 6700.7454 2.6429857e+08 0.061613148 0.031220601 128.20471 30.297095 6703.0702 2.4676860e+08 0.061366053 0.033850920 128.26205 30.151132 6705.3950 2.3708017e+08 0.061607988 0.037370871 128.31939 30.007842 6707.7198 2.2898349e+08 0.061366065 0.040083712 128.37673 29.867092 6710.0446 2.2374008e+08 0.060303279 0.040505232 128.43718 29.723243 6712.3695 2.1599468e+08 0.058142727 0.042515905 128.49974 29.577281 6714.6943 1.9884433e+08 0.056200292 0.047355603 128.55877 29.434842 6717.0191 1.8843442e+08 0.054196974 0.049873089 128.61612 29.294092 6719.3439 1.7728163e+08 0.052209293 0.051043126 128.67346 29.149392 6721.6687 1.7219821e+08 0.052555264 0.050505379 128.73080 29.003429 6723.9935 1.7123151e+08 0.050547653 0.049923038 128.78814 28.861843 6726.3183 1.6496845e+08 0.046603492 0.040954238 128.84549 28.721093 6728.6431 1.5927350e+08 0.046021107 0.040539617 128.91163 28.558731 6730.9679 1.4785388e+08 0.044326934 0.041706059 128.97589 28.399580 6733.2927 1.3835676e+08 0.043082676 0.045513705 129.03322 28.253641 6735.6176 1.3098608e+08 0.043943700 0.049949013 129.09055 28.109562 6737.9424 1.2739344e+08 0.045435008 0.057137496 129.14789 27.968812 6740.2672 1.2458809e+08 0.045080075 0.064506787 129.20293 27.825769 6742.5920 1.2020179e+08 0.042057720 0.070053239 129.25507 27.679807 6744.9168 1.1559754e+08 0.038175023 0.078502531 129.30992 27.536564 6747.2416 1.0776320e+08 0.033660264 0.067277985 129.36726 27.395815 6749.5664 1.0075901e+08 0.032447937 0.072122847 129.42670 27.240906 6751.8912 99282812. 0.028965630 0.074088487 129.48753 27.076693 6754.2160 99262705. 0.027587147 0.075866053 129.54501 26.934987 6756.5408 94092651. 0.024869493 0.075558595 129.60214 26.794024 6758.8657 91576788. 0.025332564 0.075535875 129.65427 26.648061 6761.1905 85126202. 0.026394751 0.077983961 129.70703 26.502738 6763.5153 82497356. 0.031613228 0.078007064 129.76437 26.361988 6765.8401 79761876. 0.033833767 0.079684555 129.82243 26.216443 6768.1649 73542902. 0.030759093 0.081449382 129.88325 26.052231 6770.4897 71106380. 0.026004992 0.088067469 129.93920 25.901160 6772.8145 70933559. 0.021859928 0.093706157 129.99133 25.760411 6775.1393 69979741. 0.017709634 0.099344844 130.04346 25.616315 6777.4641 65911345. 0.013510855 0.10498353 130.09559 25.470354 6779.7890 60876496. 0.0092741756 0.11062222 130.15401 25.311186 6782.1138 53752983. 0.0049442798 0.11626091 130.21414 25.148833 6784.4386 50817723. 0.00067169729 0.12189959 130.26627 25.008083 6786.7634 51912047. -0.0035061324 0.12753828 130.31839 24.867334 6789.0882 53295694. -0.0077239117 0.13317697 130.37053 24.726585 6791.4130 55962378. -0.011975538 0.13881566 130.42477 24.580141 6793.7378 54248295. -0.016574222 0.14445434 130.48558 24.415928 6796.0626 49854502. -0.021722139 0.15009303 130.54120 24.265758 6798.3874 48654365. -0.027974594 0.15573172 130.59333 24.125008 6800.7122 45644882. -0.045375435 0.16137041 130.64723 23.968321 6803.0371 44824463. -0.038599406 0.16700909 130.70186 23.804977 6805.3619 43048993. -0.018769487 0.17264778 130.75399 23.664227