# # 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 = 67.789203 km # Date (UTC) = 2014-12-01T10:10:46.675 # Date (julian) = 2456992.92415133 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.5645 1.0987347e+11 0.043981374 0.031850327 103.29118 27.482068 6501.2850 9.1265349e+10 0.053795312 0.032670698 103.35329 27.342324 6504.0055 7.7382880e+10 0.063555337 0.033491069 103.41023 27.209478 6506.7261 6.7542886e+10 0.073505852 0.034311440 103.47310 27.068710 6509.4466 5.9443847e+10 0.083755964 0.035131811 103.54249 26.919257 6512.1672 5.2546101e+10 0.094416266 0.035952183 103.60437 26.779815 6514.8877 4.6910458e+10 0.10568086 0.036772554 103.66131 26.646952 6517.6082 4.2277427e+10 0.11771441 0.037592925 103.72178 26.505857 6520.3288 3.7986307e+10 0.13041831 0.038413296 103.78583 26.356402 6523.0493 3.3811890e+10 0.14080665 0.039191334 103.84988 26.206949 6525.7698 3.0030653e+10 0.14605635 0.039694354 103.91393 26.057495 6528.4904 2.6904277e+10 0.15154564 0.041831507 103.97265 25.920483 6531.2109 2.4340738e+10 0.15582648 0.045535682 104.02959 25.787636 6533.9315 2.2075245e+10 0.15986373 0.047915431 104.09109 25.644137 6536.6520 1.9945295e+10 0.16214941 0.048373864 104.15513 25.494683 6539.3725 1.8024578e+10 0.16466098 0.050094579 104.21373 25.361613 6542.0931 1.6386630e+10 0.16581801 0.051037576 104.27067 25.233495 6544.8136 1.4903290e+10 0.16652536 0.052304370 104.32878 25.091285 6547.5342 1.3505100e+10 0.16584941 0.053490494 104.38750 24.941830 6550.2547 1.2253566e+10 0.16454907 0.055049133 104.44481 24.805447 6552.9752 1.1200740e+10 0.16244340 0.055341301 104.50174 24.672600 6555.6958 1.0281903e+10 0.15958640 0.054268750 104.56351 24.528473 6558.4163 9.4017724e+09 0.15707519 0.052884557 104.62756 24.379019 6561.1368 8.6174333e+09 0.15386755 0.051305245 104.68206 24.246772 6563.8574 7.9512229e+09 0.15103249 0.048936568 104.73425 24.118670 6566.5779 7.3639042e+09 0.14903077 0.046855953 104.79099 23.975661 6569.2985 6.8117310e+09 0.14739767 0.044871850 104.84970 23.826207 6572.0190 6.3086153e+09 0.14624726 0.044219273 104.90696 23.690435 6574.7395 5.8801782e+09 0.14422038 0.042499805 104.96390 23.557572 6577.4601 5.4808932e+09 0.14195213 0.039497698 105.02211 23.416637 6580.1806 5.0873853e+09 0.13953957 0.036353836 105.08082 23.272520 6582.9012 4.7260501e+09 0.13748843 0.035048564 105.13403 23.137913 6585.6217 4.4227601e+09 0.13523436 0.033473742 105.18622 23.005067 6588.3422 4.1573681e+09 0.13332704 0.033265641 105.24321 22.863926 6591.0628 3.8933271e+09 0.13041066 0.029131078 105.30193 22.719810 6593.7833 3.6190990e+09 0.12778532 0.026373979 105.36064 22.571090 6596.5038 3.3593948e+09 0.12458084 0.025724983 105.41935 22.421651 6599.2244 3.1438654e+09 0.12223229 0.024943226 105.47162 22.293283 6601.9449 2.9610417e+09 0.12153779 0.027490697 105.52382 22.165164 6604.6655 2.7957709e+09 0.11948793 0.026466408 105.58176 22.018236 6607.3860 2.6399745e+09 0.11736302 0.024944783 105.64042 21.868957 6610.1065 2.4887980e+09 0.11353301 0.024104778 105.69261 21.740855 6612.8271 2.3592949e+09 0.11147061 0.023702789 105.74480 21.612753 6615.5476 2.2325874e+09 0.11037724 0.023268380 105.80287 21.470231 6618.2682 2.1072008e+09 0.10991761 0.023973287 105.86128 21.326418 6620.9887 1.9926000e+09 0.10939861 0.025085804 105.90872 21.193572 6623.7092 1.8857022e+09 0.10780941 0.024754586 105.95617 21.060725 6626.4298 1.7845255e+09 0.10644817 0.026043332 106.01397 20.917520 6629.1503 1.6864272e+09 0.10504901 0.026081928 106.07217 20.774136 6631.8709 1.5994961e+09 0.10329465 0.026019226 106.11962 20.646018 6634.5914 1.5280255e+09 0.10170465 0.026369981 106.16707 20.517899 6637.3119 1.4560971e+09 0.10008649 0.026008639 106.22509 20.374769 6640.0325 1.3778085e+09 0.099835647 0.025266680 106.28346 20.230306 6642.7530 1.2938339e+09 0.099812454 0.025182511 106.33684 20.080851 6645.4735 1.2191799e+09 0.098533183 0.025673522 106.38908 19.935483 6648.1941 1.1605962e+09 0.097034188 0.027094204 106.43653 19.807382 6650.9146 1.1068777e+09 0.095950144 0.026464620 106.48492 19.677942 6653.6352 1.0602661e+09 0.094975488 0.027849951 106.54363 19.533825 6656.3557 1.0046767e+09 0.092604955 0.028335612 106.60122 19.389709 6659.0762 9.4723482e+08 0.090381130 0.031818696 106.65460 19.245592 6661.7968 8.9609565e+08 0.088426859 0.032940764 106.70598 19.106862 6664.5173 8.5432221e+08 0.086718057 0.030313261 106.75343 18.978743 6667.2379 8.1974004e+08 0.085902958 0.027190825 106.80224 18.846956 6669.9584 7.8688844e+08 0.084701474 0.027371369 106.85561 18.702840 6672.6789 7.4966518e+08 0.084236600 0.027273119 106.90899 18.558724 6675.3995 7.1290149e+08 0.082316148 0.030563484 106.96237 18.414608 6678.1200 6.7846171e+08 0.080710471 0.030856349 107.01288 18.278215 6680.8405 6.4736827e+08 0.081324420 0.029622925 107.06032 18.150114 6683.5611 6.2178809e+08 0.081915567 0.032010854 107.10999 18.016013 6686.2816 5.9499412e+08 0.081061709 0.033924936 107.16337 17.871895 6689.0022 5.7120194e+08 0.077507236 0.034014080 107.21675 17.727779 6691.7227 5.4300100e+08 0.076365470 0.032830754 107.27013 17.583664 6694.4432 5.1501558e+08 0.075370754 0.030639806 107.32350 17.442898 6697.1638 4.9138511e+08 0.074805719 0.030111991 107.37688 17.304119 6699.8843 4.6782976e+08 0.073026122 0.030774463 107.42624 17.161298 6702.6049 4.4580504e+08 0.071466575 0.033359708 107.47428 17.017160 6705.3254 4.2843443e+08 0.071577034 0.037247086 107.52180 16.887149 6708.0459 4.1058084e+08 0.071030566 0.040093594 107.56924 16.759048 6710.7665 3.9772530e+08 0.069024085 0.040646522 107.62127 16.618562 6713.4870 3.8460716e+08 0.066178330 0.045448024 107.67465 16.474445 6716.2075 3.6566187e+08 0.063683442 0.048707055 107.72322 16.335132 6718.9281 3.5138402e+08 0.060554245 0.051257835 107.77140 16.196214 6721.6486 3.3557099e+08 0.060684624 0.050499332 107.82478 16.052097 6724.3692 3.1975052e+08 0.057448433 0.046843928 107.87734 15.907981 6727.0897 3.0582842e+08 0.053887575 0.040840881 107.92538 15.763864 6729.8102 2.9273524e+08 0.052794551 0.040505383 107.97491 15.621238 6732.5308 2.8095720e+08 0.050870150 0.043837923 108.02828 15.482459 6735.2513 2.7113831e+08 0.051066798 0.049560222 108.07949 15.341513 6737.9719 2.5831427e+08 0.053037614 0.057231430 108.12753 15.197397 6740.6924 2.4724390e+08 0.052444409 0.065233196 108.17842 15.056112 6743.4129 2.3813031e+08 0.047900787 0.073833062 108.23180 14.917312 6746.1335 2.2733054e+08 0.045000729 0.077435545 108.28166 14.775008 6748.8540 2.1854328e+08 0.041471055 0.071509865 108.32970 14.630892 6751.5745 2.1139349e+08 0.037229441 0.073954592 108.37774 14.490969 6754.2951 2.0478020e+08 0.034929872 0.075738937 108.42578 14.352190 6757.0156 1.9685868e+08 0.031653756 0.076692642 108.47869 14.208542 6759.7362 1.8808055e+08 0.032880751 0.075997603 108.53186 14.064631 6762.4567 1.7793567e+08 0.037322194 0.077314149 108.57990 13.925853 6765.1772 1.6976595e+08 0.040608569 0.079563549 108.62907 13.782791 6767.8978 1.6322245e+08 0.038555539 0.080970487 108.68397 13.618083 6770.6183 1.5512716e+08 0.032922878 0.088379390 108.73527 13.467012 6773.3389 1.4921616e+08 0.027987093 0.094977892 108.78331 13.328233 6776.0594 1.4256952e+08 0.023075903 0.10157639 108.83134 13.189455 6778.7799 1.3585151e+08 0.018177573 0.10817490 108.87938 13.050676 6781.5005 1.2801472e+08 0.013319285 0.11477340 108.92742 12.911897 6784.2210 1.2072128e+08 0.0084616078 0.12137190 108.97546 12.773117 6786.9415 1.1967208e+08 0.0034893549 0.12797040 109.02971 12.610860 6789.6621 1.1970776e+08 -0.0014607616 0.13456890 109.08279 12.453055 6792.3826 1.1968328e+08 -0.0063560013 0.14116741 109.13083 12.314276 6795.1032 1.1675755e+08 -0.011159200 0.14776591 109.17887 12.175489 6797.8237 1.1174568e+08 -0.015903811 0.15436441 109.22692 12.036690 6800.5442 1.0529811e+08 -0.020606822 0.16096291 109.27852 11.887600 6803.2648 97670799. -0.025265698 0.16756141 109.33342 11.728992 6805.9853 92678532. -0.029966776 0.17415992 109.38228 11.587838 6808.7059 92308577. -0.034770894 0.18075842 109.43033 11.448924 6811.4264 91151886. -0.039547495 0.18735692 109.47913 11.290317 6814.1469 86804408. -0.044242783 0.19395542 109.52766 11.138996 6816.8675 79499011. -0.048842539 0.20055392 109.57569 11.000218 6819.5880 77344490. -0.053573835 0.20715243 109.62712 10.851644 6822.3085 78714455. -0.058401661 0.21375093 109.68203 10.693036 6825.0291 78604502. -0.063185938 0.22034943 109.73693 10.534428 6827.7496 76378350. -0.067908029 0.22694793 109.78920 10.380093 6830.4702 73485187. -0.072608315 0.23354644 109.83190 10.241314 6833.1907 72599084. -0.077362144 0.24014494 109.87878 10.095753 6835.9112 71968046. -0.082122402 0.24674344 109.93368 9.9371456 6838.6318 70487191. -0.086852329 0.25334194 109.98858 9.7785381 6841.3523 64327777. -0.091411881 0.25994044 110.04310 9.6199304 6844.0729 58538910. -0.095939393 0.26653895 110.09190 9.4613226 6846.7934 55336892. -0.10054315 0.27313745 110.14329 9.3027149 6849.5139 55871316. -0.10529658 0.27973595 110.19819 9.1441072 6852.2345 59018616. -0.11013919 0.28633445 110.24352 9.0010641 6854.9550 56902005. -0.11472441 0.29293295 110.28622 8.8622850 6857.6755 51763404. -0.11911764 0.29953146 110.34004 8.7109929 6860.3961 47703212. -0.12349509 0.30612996 110.39328 8.5568250 6863.1166 45598822. -0.12793670 0.31272846 110.44209 8.3982173 6865.8372 47745203. -0.13265292 0.31932696 110.49475 8.2396096 6868.5577 49762825. -0.13730678 0.32592546 110.54966 8.0809765 6871.2782 47601452. -0.14153437 0.33252397 110.60658 7.9031937 6873.9988 45445249. -0.14544362 0.33912247 110.65873 7.7366370 6876.7193 42733333. -0.14888383 0.34572097 110.70753 7.5780285 6879.4399 39566201. -0.14608998 0.35231947 110.76212 7.4194465 6882.1604 40095942. -0.15726944 0.35891797 110.81512 7.2627476 6884.8809 39020339. -0.17517692 0.36551648 110.86392 7.1102403