# # 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 = 54.825163 km # Date (UTC) = 2015-01-18T10:16:26.208 # Date (julian) = 2457040.92808111 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.6890 7.3480340e+10 0.026431786 0.030380157 99.827618 41.457038 6495.9176 6.8540319e+10 0.032874147 0.031052181 99.916035 41.317118 6498.1462 6.4427965e+10 0.039352733 0.031724204 100.00099 41.177197 6500.3748 6.0440215e+10 0.045977910 0.032396228 100.08746 41.037276 6502.6034 5.6280593e+10 0.052848645 0.033068251 100.17741 40.897354 6504.8320 5.2401030e+10 0.060154812 0.033740275 100.26584 40.757432 6507.0605 4.8696822e+10 0.068027595 0.034412298 100.35080 40.617511 6509.2891 4.5247412e+10 0.076585587 0.035084322 100.43575 40.477591 6511.5177 4.2048729e+10 0.085948026 0.035756346 100.52070 40.337670 6513.7463 3.9072735e+10 0.096199418 0.036428369 100.60565 40.199259 6515.9749 3.6362361e+10 0.10745138 0.037100393 100.69061 40.064334 6518.2035 3.3746195e+10 0.11963497 0.037772416 100.77405 39.927906 6520.4320 3.1225601e+10 0.13268236 0.038444440 100.85401 39.787984 6522.6606 2.8819431e+10 0.14474573 0.039090246 100.93546 39.648062 6524.8892 2.6629192e+10 0.15374531 0.039742859 101.02042 39.508142 6527.1178 2.4600249e+10 0.16129806 0.040801995 101.10387 39.368221 6529.3464 2.2690635e+10 0.16761102 0.042787545 101.18383 39.228301 6531.5750 2.0854400e+10 0.17351150 0.046065553 101.26378 39.088379 6533.8036 1.9112465e+10 0.17719176 0.047861073 101.34374 38.948457 6536.0321 1.7501524e+10 0.17738300 0.047819255 101.42369 38.808536 6538.2607 1.5984391e+10 0.17811250 0.049283638 101.50365 38.668615 6540.4893 1.4669330e+10 0.17673659 0.051085262 101.58065 38.533859 6542.7179 1.3608185e+10 0.17420203 0.051274788 101.65061 38.411431 6544.9465 1.2715320e+10 0.17236294 0.052412144 101.72061 38.288896 6547.1751 1.1899487e+10 0.17005299 0.053353935 101.79557 38.153977 6549.4036 1.1076899e+10 0.16783556 0.054377621 101.87057 38.019013 6551.6322 1.0229847e+10 0.16612875 0.055457671 101.95052 37.879097 6553.8608 9.4380042e+09 0.16389358 0.054902351 102.03043 37.739176 6556.0894 8.7294484e+09 0.16165210 0.053999983 102.10540 37.599254 6558.3180 8.0849572e+09 0.15968615 0.052968351 102.18036 37.459332 6560.5466 7.5129257e+09 0.15696107 0.051781517 102.25532 37.319411 6562.7751 6.9807561e+09 0.15435151 0.050142327 102.33027 37.179491 6565.0037 6.4361778e+09 0.15201237 0.048314166 102.40523 37.039570 6567.2323 5.9426840e+09 0.14978134 0.046420764 102.48013 36.899792 6569.4609 5.5450969e+09 0.14772573 0.044882421 102.54575 36.781648 6571.6895 5.2205595e+09 0.14578039 0.044314965 102.61134 36.663592 6573.9181 4.9502031e+09 0.14286988 0.042920760 102.68005 36.529892 6576.1466 4.6624341e+09 0.14009089 0.041202602 102.75001 36.389969 6578.3752 4.3649413e+09 0.13699362 0.038057085 102.82354 36.250048 6580.6038 4.0914888e+09 0.13370974 0.035962743 102.89850 36.110128 6582.8324 3.8292479e+09 0.13095332 0.035067276 102.96989 35.970207 6585.0610 3.5895605e+09 0.12842547 0.033922021 103.03985 35.830287 6587.2896 3.3823991e+09 0.12623006 0.033222526 103.10670 35.705936 6589.5181 3.2080826e+09 0.12432837 0.032018019 103.17229 35.587879 6591.7467 3.0627278e+09 0.12198395 0.028359310 103.23973 35.460530 6593.9753 2.9118769e+09 0.11975907 0.026195473 103.30969 35.320610 6596.2039 2.7509429e+09 0.11722615 0.025726347 103.37965 35.180688 6598.4325 2.5846758e+09 0.11556109 0.025200683 103.44962 35.040766 6600.6611 2.4283591e+09 0.11540084 0.026348906 103.51958 34.902956 6602.8897 2.2825842e+09 0.11469979 0.026757441 103.58954 34.768032 6605.1182 2.1522159e+09 0.11404701 0.026764233 103.65397 34.638377 6607.3468 2.0530348e+09 0.11250056 0.025022159 103.71081 34.515950 6609.5754 1.9607105e+09 0.10936469 0.023876853 103.76942 34.391168 6611.8040 1.8693267e+09 0.10670723 0.024445750 103.83938 34.251247 6614.0326 1.7687898e+09 0.10565726 0.023918053 103.90867 34.111993 6616.2612 1.6613396e+09 0.10417661 0.023323287 103.97363 33.977069 6618.4897 1.5723953e+09 0.10344466 0.024140606 104.03810 33.843799 6620.7183 1.5043195e+09 0.10240037 0.024998676 104.09931 33.721371 6622.9469 1.4378611e+09 0.10068054 0.024505958 104.16053 33.598943 6625.1755 1.3777548e+09 0.098881760 0.025607015 104.22491 33.465952 6627.4041 1.3107761e+09 0.096567055 0.025472897 104.28988 33.331028 6629.6327 1.2360627e+09 0.095091827 0.025994719 104.35484 33.191884 6631.8612 1.1730415e+09 0.093023011 0.026018250 104.41980 33.051962 6634.0898 1.1168651e+09 0.091352813 0.026333395 104.47792 32.930474 6636.3184 1.0718673e+09 0.089852160 0.026426102 104.53476 32.812418 6638.5470 1.0277280e+09 0.088940851 0.025647811 104.59612 32.682205 6640.7756 9.7854926e+08 0.089548034 0.025175759 104.66108 32.542284 6643.0042 9.3203066e+08 0.089420110 0.025193246 104.72605 32.405136 6645.2327 8.9062456e+08 0.088492664 0.025560716 104.79101 32.270212 6647.4613 8.5211516e+08 0.087434511 0.026680671 104.85597 32.132521 6649.6899 8.0905038e+08 0.086643746 0.026682679 104.92093 31.992601 6651.9185 7.7071551e+08 0.086210321 0.027188059 104.97899 31.864763 6654.1471 7.3653447e+08 0.085508923 0.027973569 105.03146 31.746707 6656.3757 7.0831094e+08 0.083616282 0.028353134 105.08725 31.622845 6658.6042 6.8510887e+08 0.081944947 0.031132722 105.15221 31.482923 6660.8328 6.5661877e+08 0.080462308 0.032383000 105.21585 31.344323 6663.0614 6.2747865e+08 0.079159260 0.032466193 105.27582 31.209399 6665.2900 5.9745172e+08 0.078529960 0.028071959 105.33579 31.074475 6667.5186 5.6528160e+08 0.077940191 0.027293942 105.39576 30.939551 6669.7472 5.3709982e+08 0.077056048 0.027588312 105.45376 30.807903 6671.9757 5.1889798e+08 0.076673542 0.026879254 105.50622 30.685475 6674.2043 5.0479988e+08 0.075495415 0.029127159 105.55869 30.563046 6676.4329 4.9835291e+08 0.072846296 0.031992736 105.61847 30.428434 6678.6615 4.8540705e+08 0.071664469 0.030494174 105.67844 30.293511 6680.8901 4.6825956e+08 0.072257366 0.029633623 105.73841 30.158587 6683.1187 4.5187864e+08 0.072711411 0.031362491 105.79838 30.023663 6685.3473 4.2878114e+08 0.072412110 0.033071621 105.85834 29.883877 6687.5758 4.0930218e+08 0.070378820 0.034021751 105.91830 29.743955 6689.8044 3.9086311e+08 0.068171209 0.033291918 105.97099 29.625281 6692.0330 3.7497586e+08 0.067113725 0.032727004 106.02346 29.507225 6694.2616 3.6511484e+08 0.066190720 0.030894399 106.08106 29.377620 6696.4902 3.4944422e+08 0.065921067 0.029879442 106.14103 29.242697 6698.7188 3.3247723e+08 0.064743949 0.031204391 106.19758 29.104357 6700.9473 3.1440698e+08 0.062853828 0.031370386 106.25254 28.964436 6703.1759 2.9947127e+08 0.062485689 0.034115449 106.31092 28.827925 6705.4045 2.9135322e+08 0.062447937 0.037387736 106.37089 28.693001 6707.6331 2.8056957e+08 0.061965828 0.040096137 106.42745 28.558077 6709.8617 2.6919786e+08 0.060815024 0.040584477 106.48242 28.423152 6712.0903 2.5501696e+08 0.058509978 0.041997537 106.53569 28.299701 6714.3188 2.4501358e+08 0.056204642 0.047327379 106.58816 28.181646 6716.5474 2.3729521e+08 0.054128565 0.049207667 106.64161 28.056959 6718.7760 2.2920267e+08 0.051545079 0.051020990 106.69658 27.922035 6721.0046 2.2082455e+08 0.051555492 0.050305283 106.75155 27.787111 6723.2332 2.1210330e+08 0.050128455 0.049498991 106.80651 27.652187 6725.4618 2.0678314e+08 0.045719287 0.041287580 106.86148 27.517263 6727.6903 1.9746354e+08 0.044368895 0.040040650 106.91645 27.382339 6729.9189 1.8594514e+08 0.042979730 0.040432939 106.97142 27.247416 6732.1475 1.7768265e+08 0.041085759 0.043767366 107.02639 27.112493 6734.3761 1.7122439e+08 0.040311948 0.049330971 107.08136 26.975627 6736.6047 1.6651279e+08 0.042026620 0.052641033 107.13633 26.835705 6738.8333 1.5971669e+08 0.042877000 0.061908590 107.19130 26.697719 6741.0618 1.5284980e+08 0.041683124 0.065935082 107.24627 26.562795 6743.2904 1.4437112e+08 0.037615510 0.073006680 107.29931 26.427871 6745.5190 1.3947213e+08 0.035041810 0.078785076 107.34928 26.292947 6747.7476 1.3249408e+08 0.030719290 0.067103792 107.40117 26.158024 6749.9762 1.2463855e+08 0.028150352 0.072010653 107.45614 26.023101 6752.2048 1.2348655e+08 0.025495542 0.073897524 107.51111 25.890097 6754.4334 1.1837476e+08 0.024226984 0.075516590 107.56608 25.760170 6756.6619 1.1582533e+08 0.021669318 0.075870162 107.61914 25.628329 6758.8905 1.1239808e+08 0.022397506 0.075588440 107.66911 25.493404 6761.1191 1.0657925e+08 0.023246865 0.077978065 107.72099 25.358480 6763.3477 1.0373331e+08 0.028680937 0.077496647 107.77596 25.223556 6765.5763 1.0217567e+08 0.031184642 0.079636393 107.82902 25.088632 6767.8049 96562195. 0.029234851 0.081074539 107.87900 24.953709 6770.0334 94552323. 0.024754241 0.086960799 107.92897 24.818786 6772.2620 86642137. 0.020811844 0.092366095 107.97894 24.683862 6774.4906 80205498. 0.016919167 0.097771391 108.03081 24.548938 6776.7192 78986364. 0.013237475 0.10317669 108.08577 24.414014 6778.9478 74633465. 0.0094033250 0.10858198 108.13886 24.279089 6781.1764 76348824. 0.0057901099 0.11398728 108.18883 24.144165 6783.4049 77649755. 0.0020969827 0.11939257 108.23880 24.011120 6785.6335 74705593. -0.0018052253 0.12479787 108.28877 23.881193 6787.8621 71863894. -0.0058061652 0.13020316 108.34187 23.740956 6790.0907 63841758. -0.010213856 0.13560846 108.40017 23.583542 6792.3193 57955692. -0.014866611 0.14101375 108.45297 23.440968 6794.5479 59077836. -0.019450340 0.14641905 108.50294 23.306044 6796.7764 57695082. -0.024823884 0.15182435 108.55292 23.171120 6799.0050 56212863. -0.031338704 0.15722964 108.60289 23.036196 6801.2336 49097684. -0.042783714 0.16263494 108.65286 22.904558 6803.4622 45270638. -0.085636683 0.16804023 108.70284 22.774632 6805.6908 45861499. -0.059687532 0.17344553 108.75827 22.626679 6807.9194 50082167. -0.0019605546 0.17885082 108.81656 22.469293