# # 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 = 57.783496 km # Date (UTC) = 2014-01-23T09:13:02.320 # Date (julian) = 2456680.88405463 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6501.1992 7.0270377e+10 0.050695773 0.032644819 113.38269 46.943684 6503.8399 6.2452949e+10 0.060838787 0.033441129 113.52777 46.752976 6506.4807 5.5397614e+10 0.071200092 0.034237439 113.67175 46.559546 6509.1214 4.8984134e+10 0.081821520 0.035033749 113.80989 46.366147 6511.7622 4.3840001e+10 0.092961711 0.035830060 113.93405 46.192335 6514.4029 3.9588299e+10 0.10470003 0.036626370 114.05275 46.025958 6517.0437 3.5765556e+10 0.11698183 0.037422680 114.18400 45.832521 6519.6844 3.2204999e+10 0.12977312 0.038218990 114.31923 45.639084 6522.3252 2.8786871e+10 0.14213341 0.039002396 114.45653 45.445648 6524.9659 2.5835958e+10 0.14930987 0.039770101 114.58778 45.252209 6527.6066 2.3257947e+10 0.15426309 0.041156904 114.71905 45.058772 6530.2474 2.0833330e+10 0.15888652 0.044175044 114.85030 44.866939 6532.8881 1.8677318e+10 0.16269389 0.047426141 114.98154 44.680447 6535.5289 1.6962095e+10 0.16448809 0.047994867 115.09347 44.510160 6538.1696 1.5585116e+10 0.16697450 0.049239284 115.20238 44.341756 6540.8104 1.4391040e+10 0.16830716 0.051236948 115.33364 44.148319 6543.4511 1.3140017e+10 0.16855193 0.051500294 115.46043 43.954881 6546.0919 1.1962939e+10 0.16769097 0.052540125 115.58124 43.766951 6548.7326 1.1027105e+10 0.16668435 0.053886432 115.68783 43.601154 6551.3734 1.0254583e+10 0.16490622 0.055366809 115.79996 43.421245 6554.0141 9.5105834e+09 0.16231491 0.054832676 115.91784 43.227808 6556.6549 8.7241591e+09 0.16005342 0.053916849 116.04219 43.034369 6559.2956 8.0482351e+09 0.15720956 0.052353815 116.15196 42.857945 6561.9364 7.4857435e+09 0.15437444 0.050911265 116.25263 42.692147 6564.5771 6.9802008e+09 0.15146920 0.048510054 116.36884 42.500735 6567.2178 6.5290569e+09 0.14939756 0.046432990 116.47824 42.320543 6569.8586 6.0862641e+09 0.14780534 0.044908306 116.57890 42.154743 6572.4993 5.7075477e+09 0.14599216 0.043944195 116.69281 41.967128 6575.1401 5.3337812e+09 0.14384471 0.042234153 116.80787 41.773717 6577.7808 4.9554283e+09 0.14132269 0.038993867 116.91841 41.580280 6580.4216 4.6284121e+09 0.13865540 0.036131149 117.02011 41.416885 6583.0623 4.3273814e+09 0.13647911 0.034990118 117.12281 41.250081 6585.7031 4.0581914e+09 0.13399806 0.033408679 117.23335 41.056642 6588.3438 3.7943791e+09 0.13200643 0.033265110 117.33190 40.884179 6590.9846 3.5651370e+09 0.12891470 0.029230611 117.42664 40.718381 6593.6253 3.3830714e+09 0.12592598 0.026520865 117.52138 40.552583 6596.2661 3.2055790e+09 0.12223156 0.025726064 117.61951 40.376246 6598.9068 3.0304939e+09 0.11933693 0.024974222 117.72314 40.182808 6601.5476 2.8616901e+09 0.11845891 0.027303559 117.81847 40.015179 6604.1883 2.6904994e+09 0.11606344 0.026183086 117.91539 39.842610 6606.8291 2.5336395e+09 0.11437971 0.026014184 118.01902 39.649173 6609.4698 2.3907056e+09 0.11036848 0.023845484 118.11084 39.477779 6612.1105 2.2481143e+09 0.10751760 0.024238156 118.20126 39.309732 6614.7513 2.1218908e+09 0.10667853 0.023422882 118.30487 39.123239 6617.3920 1.9944084e+09 0.10570427 0.023569228 118.39870 38.950423 6620.0328 1.8762798e+09 0.10545647 0.024777763 118.48752 38.784623 6622.6735 1.7863028e+09 0.10412444 0.024578721 118.57634 38.618824 6625.3143 1.6971522e+09 0.10264379 0.025772634 118.66740 38.445196 6627.9550 1.6078236e+09 0.10083863 0.025685722 118.76412 38.251759 6630.5958 1.5174548e+09 0.099209740 0.025929770 118.84929 38.081422 6633.2365 1.4272918e+09 0.097659826 0.026193547 118.93523 37.912574 6635.8773 1.3456826e+09 0.095881038 0.026531347 119.03886 37.726046 6638.5180 1.2676194e+09 0.094625305 0.025649074 119.12799 37.554018 6641.1588 1.1977887e+09 0.094986889 0.025148840 119.21089 37.388219 6643.7995 1.1390539e+09 0.093953433 0.025313334 119.29379 37.222421 6646.4403 1.0832168e+09 0.092534551 0.026148037 119.38114 37.047725 6649.0810 1.0217728e+09 0.090972461 0.027522032 119.47785 36.854289 6651.7217 9.6286283e+08 0.090357793 0.027037280 119.55731 36.685019 6654.3625 9.1008534e+08 0.089206889 0.027881800 119.63539 36.520319 6657.0032 8.6926910e+08 0.086633911 0.028904871 119.71829 36.360442 6659.6440 8.3199531e+08 0.084525410 0.031700262 119.80462 36.183891 6662.2847 7.8770566e+08 0.082480002 0.032884519 119.89409 35.991818 6664.9255 7.4683284e+08 0.081233804 0.028819792 119.97699 35.826019 6667.5662 7.0985442e+08 0.080452306 0.027311443 120.05776 35.662356 6670.2070 6.7881147e+08 0.079671126 0.027232745 120.13474 35.502478 6672.8477 6.4530690e+08 0.079449415 0.027370954 120.22032 35.320081 6675.4885 6.1052986e+08 0.077578717 0.030733953 120.30724 35.132863 6678.1292 5.8019868e+08 0.076114275 0.030850189 120.38422 34.967066 6680.7700 5.5809151e+08 0.076684067 0.029607683 120.45803 34.804436 6683.4107 5.3522320e+08 0.077364541 0.031790479 120.52909 34.644559 6686.0515 5.0988651e+08 0.076822924 0.033791022 120.61601 34.456277 6688.6922 4.8321676e+08 0.073603337 0.033944974 120.70071 34.273864 6691.3329 4.5783732e+08 0.072221770 0.032922709 120.77769 34.108067 6693.9737 4.4197891e+08 0.070932236 0.031270051 120.85046 33.946473 6696.6144 4.2473435e+08 0.070583439 0.029931074 120.92191 33.785881 6699.2552 4.0792624e+08 0.068991952 0.031354965 121.01172 33.592442 6701.8959 3.9179848e+08 0.066812259 0.032724039 121.09077 33.418262 6704.5367 3.7198916e+08 0.067118612 0.036441093 121.16183 33.258387 6707.1774 3.5147750e+08 0.066747482 0.040161410 121.24337 33.068808 6709.8182 3.2661546e+08 0.065729230 0.040612143 121.32109 32.890052 6712.4589 3.0494363e+08 0.063206378 0.042682026 121.39215 32.730173 6715.0997 2.9639264e+08 0.060590711 0.047480528 121.46320 32.565863 6717.7404 2.9294617e+08 0.057786601 0.049828470 121.53497 32.398823 6720.3812 2.8794888e+08 0.056257097 0.050375602 121.61787 32.212294 6723.0219 2.7311179e+08 0.055280993 0.049381164 121.68989 32.038461 6725.6627 2.5541157e+08 0.050561127 0.041162089 121.75503 31.872664 6728.3034 2.4094420e+08 0.049475117 0.040058123 121.83655 31.687753 6730.9442 2.2903440e+08 0.047565649 0.041673449 121.91381 31.511107 6733.5849 2.1786561e+08 0.045991392 0.047099888 121.98487 31.345307 6736.2256 2.0313635e+08 0.047468544 0.051208069 122.05126 31.184169 6738.8664 1.9362774e+08 0.048521326 0.062090975 122.11747 31.021674 6741.5071 1.8658339e+08 0.046654728 0.067205079 122.19346 30.835145 6744.1479 1.8060411e+08 0.041187549 0.077907797 122.26624 30.662106 6746.7886 1.7384729e+08 0.036728165 0.069818551 122.33729 30.496308 6749.4294 1.6190010e+08 0.034690150 0.072160369 122.41310 30.310567 6752.0701 1.5303315e+08 0.030253695 0.074053328 122.48351 30.134704 6754.7109 1.4453604e+08 0.028338056 0.075070299 122.54864 29.968906 6757.3516 1.3856632e+08 0.025406171 0.075672986 122.62274 29.785990 6759.9924 1.3516992e+08 0.026189492 0.076059429 122.69463 29.609539 6762.6331 1.3105229e+08 0.030527218 0.077029583 122.75977 29.449662 6765.2739 1.2626484e+08 0.033294278 0.079581187 122.82762 29.271412 6767.9146 1.2171803e+08 0.030868705 0.080951644 122.89575 29.089897 6770.5554 1.1566061e+08 0.025037334 0.088226676 122.96089 28.924099 6773.1961 1.0905888e+08 0.019903978 0.094631648 123.03202 28.746856 6775.8368 1.0382675e+08 0.014809614 0.10103662 123.10727 28.560361 6778.4776 96757917. 0.0096217580 0.10744159 123.17636 28.373832 6781.1183 92079299. 0.0045421022 0.11384656 123.24284 28.204834 6783.7591 88821367. -0.00042793333 0.12025154 123.30798 28.044957 6786.3998 84756264. -0.0054088244 0.12665651 123.37694 27.859254 6789.0406 81099325. -0.010328327 0.13306148 123.44397 27.683536 6791.6813 78491736. -0.015150025 0.13946645 123.50910 27.517737 6794.3221 74104730. -0.020129724 0.14587142 123.57753 27.334676 6796.9628 74220664. -0.024706566 0.15227640 123.64661 27.148148 6799.6036 70863961. -0.029612754 0.15868137 123.71570 26.961620 6802.2443 69967441. -0.034296264 0.16508634 123.77553 26.800083 6804.8851 67608006. -0.039154193 0.17149131 123.83719 26.633580 6807.5258 64432761. -0.044162637 0.17789628 123.90626 26.447087 6810.1666 64440818. -0.048840732 0.18430126 123.97534 26.260565 6812.8073 60752286. -0.054083127 0.19070623 124.04443 26.074037 6815.4480 56963548. -0.059516013 0.19711120 124.11352 25.887509 6818.0888 51910503. -0.065476297 0.20351617 124.18260 25.700981 6820.7295 48084683. -0.071640877 0.20992114 124.24716 25.526675 6823.3703 48375610. -0.077209536 0.21632612 124.30637 25.366798 6826.0110 51312304. -0.082542990 0.22273109 124.36787 25.186403 6828.6518 50557138. -0.089771248 0.22913606 124.43227 24.999874 6831.2925 48145753. -0.099536589 0.23554103 124.50136 24.813345 6833.9333 44560810. -0.11593161 0.24194600 124.57043 24.626848 6836.5740 44442014. -0.17844241 0.24835098 124.63655 24.440341 6839.2148 44785126. -0.13438830 0.25475595 124.69873 24.253812 6841.8555 43033600. -0.034509107 0.26116092 124.76091 24.067283