# # 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 = 46.128196 km # Date (UTC) = 2016-01-20T10:08:47.322 # Date (julian) = 2457407.92276993 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.9512 7.1795782e+10 0.032715424 0.031665408 -28.767423 54.746273 6500.2839 6.4499078e+10 0.042204461 0.032368818 -28.946294 54.593212 6502.6166 5.8502024e+10 0.052086302 0.033072227 -29.125173 54.439022 6504.9492 5.3668109e+10 0.062480406 0.033775637 -29.282090 54.308257 6507.2819 5.0022418e+10 0.073550369 0.034479047 -29.439007 54.176193 6509.6146 4.6565836e+10 0.085066717 0.035182457 -29.595925 54.040199 6511.9472 4.3104065e+10 0.096955612 0.035885866 -29.751081 53.905966 6514.2799 3.9958491e+10 0.10933772 0.036589276 -29.902767 53.775202 6516.6126 3.7059998e+10 0.12218647 0.037292686 -30.052231 53.642215 6518.9452 3.4332400e+10 0.13542746 0.037996096 -30.198687 53.506218 6521.2779 3.1877504e+10 0.14908751 0.038699505 -30.347827 53.372907 6523.6106 2.9663548e+10 0.15844872 0.039330442 -30.499513 53.242143 6525.9432 2.7680611e+10 0.16481498 0.039674565 -30.648054 53.108234 6528.2759 2.5862741e+10 0.17162104 0.041661362 -30.794510 52.972240 6530.6086 2.3986104e+10 0.17625602 0.044680693 -30.937344 52.836261 6532.9412 2.2135341e+10 0.18025125 0.047470503 -31.078546 52.700288 6535.2739 2.0280097e+10 0.18124561 0.048105475 -31.219765 52.568363 6537.6066 1.8494959e+10 0.18092284 0.048971201 -31.360990 52.437599 6539.9392 1.6835580e+10 0.17978968 0.050780562 -31.502216 52.302309 6542.2719 1.5357014e+10 0.17617554 0.051105472 -31.643442 52.166315 6544.6046 1.4124266e+10 0.17320001 0.052134797 -31.779679 52.030321 6546.9373 1.3073165e+10 0.17044725 0.053235732 -31.915674 51.894327 6549.2699 1.2119190e+10 0.16750568 0.054241348 -32.051668 51.758331 6551.6026 1.1222139e+10 0.16528471 0.055447268 -32.187662 51.622336 6553.9353 1.0329446e+10 0.16243946 0.054864928 -32.323658 51.486341 6556.2679 9.4990928e+09 0.15975312 0.053973736 -32.458514 51.350347 6558.6006 8.7444509e+09 0.15696319 0.052727529 -32.589278 51.214351 6560.9333 8.0707008e+09 0.15346152 0.051432859 -32.720042 51.079957 6563.2659 7.4723751e+09 0.15042927 0.049620755 -32.850807 50.949193 6565.5986 6.9322421e+09 0.14732600 0.047638689 -32.981571 50.816366 6567.9313 6.4199359e+09 0.14488522 0.045829784 -33.112335 50.680372 6570.2639 5.9042155e+09 0.14262857 0.044808182 -33.240575 50.544377 6572.5966 5.4031520e+09 0.14012724 0.043888502 -33.366107 50.408381 6574.9293 4.9138164e+09 0.13741643 0.042408683 -33.491641 50.272386 6577.2619 4.4648047e+09 0.13434000 0.039808944 -33.617176 50.136392 6579.5946 4.0570800e+09 0.13104312 0.036743621 -33.742710 50.000398 6581.9273 3.7174402e+09 0.12804765 0.035315820 -33.868245 49.864404 6584.2599 3.4671661e+09 0.12480256 0.034373916 -33.978636 49.741110 6586.5926 3.2883660e+09 0.12147168 0.033163636 -34.083899 49.622116 6588.9253 3.1361657e+09 0.11799737 0.033070934 -34.197615 49.490627 6591.2579 2.9657143e+09 0.11421934 0.028910860 -34.317917 49.349401 6593.5906 2.7687226e+09 0.11119070 0.026553139 -34.438220 49.211578 6595.9233 2.5620873e+09 0.10812873 0.025719317 -34.558523 49.075584 6598.2559 2.3704435e+09 0.10635877 0.025284971 -34.674965 48.939588 6600.5886 2.2015675e+09 0.10601459 0.026199940 -34.790038 48.803592 6602.9213 2.0591488e+09 0.10520415 0.026730455 -34.905109 48.667598 6605.2539 1.9272663e+09 0.10446906 0.026878080 -35.020181 48.531604 6607.5866 1.8011412e+09 0.10278891 0.024548663 -35.135253 48.395608 6609.9193 1.6877306e+09 0.099713837 0.023979000 -35.250272 48.259677 6612.2519 1.5916160e+09 0.097311042 0.024132508 -35.350973 48.140668 6614.5846 1.5122814e+09 0.096122566 0.023537718 -35.451660 48.021676 6616.9173 1.4332527e+09 0.094572177 0.023426266 -35.559834 47.888779 6619.2499 1.3548111e+09 0.093796760 0.024586222 -35.669675 47.752785 6621.5826 1.2753587e+09 0.092763428 0.024896336 -35.779517 47.616789 6623.9153 1.1976644e+09 0.090812202 0.024830924 -35.889358 47.480793 6626.2480 1.1351030e+09 0.089392569 0.026274992 -35.999200 47.339598 6628.5806 1.0774978e+09 0.087646664 0.025938832 -36.108611 47.198803 6630.9133 1.0290119e+09 0.085743564 0.025930552 -36.213222 47.062810 6633.2460 9.8801696e+08 0.084115152 0.026195194 -36.316384 46.929714 6635.5786 9.4780808e+08 0.082283842 0.026486561 -36.412494 46.810720 6637.9113 9.1240228e+08 0.080811960 0.025715090 -36.508603 46.691726 6640.2440 8.8884421e+08 0.080325839 0.025240804 -36.613092 46.555979 6642.5766 8.7229278e+08 0.079824046 0.025175293 -36.717704 46.419984 6644.9093 8.3905942e+08 0.078643642 0.025441881 -36.822316 46.283988 6647.2420 7.6342132e+08 0.077658675 0.026565173 -36.926081 46.147146 6649.5746 6.1271212e+08 0.077690030 0.026841593 -37.025461 46.005923 6651.9073 4.9183794e+08 0.078434719 0.027179476 -37.124841 45.866006 6654.2400 4.4367190e+08 0.078289784 0.027933999 -37.224223 45.730010 6656.5726 4.4882760e+08 0.076293707 0.028526011 -37.320951 45.599764 6658.9053 4.8448363e+08 0.074190571 0.031666642 -37.412485 45.480772 6661.2380 4.7011908e+08 0.072897498 0.032656150 -37.504419 45.359176 6663.5706 4.3621058e+08 0.071827300 0.032325076 -37.598568 45.223179 6665.9033 4.1884774e+08 0.071749258 0.027067041 -37.693979 45.085921 6668.2360 4.0447282e+08 0.070956615 0.027679590 -37.793361 44.944695 6670.5686 3.8700926e+08 0.070640592 0.027065193 -37.892743 44.805194 6672.9013 3.6679159e+08 0.070410269 0.027402011 -37.992123 44.669200 6675.2340 3.3750486e+08 0.068893754 0.030246497 -38.089319 44.533206 6677.5666 3.1806731e+08 0.067164032 0.031552682 -38.183469 44.397212 6679.8993 3.1114576e+08 0.067152648 0.029524625 -38.271666 44.269817 6682.2320 2.9575862e+08 0.067998319 0.030601780 -38.354046 44.150823 6684.5646 2.7600867e+08 0.068195351 0.032682745 -38.440201 44.024698 6686.8973 2.5941879e+08 0.066754970 0.034283153 -38.534352 43.883471 6689.2300 2.5417826e+08 0.063787137 0.033809008 -38.626363 43.744385 6691.5626 2.5739437e+08 0.062571558 0.032868516 -38.715282 43.608391 6693.8953 2.5273112e+08 0.061410776 0.031296941 -38.806801 43.472396 6696.2280 2.3862455e+08 0.061240461 0.029770507 -38.900952 43.336400 6698.5606 2.2320266e+08 0.060230875 0.030987370 -38.992041 43.200406 6700.8933 2.0865476e+08 0.058459178 0.031330315 -39.080962 43.064412 6703.2260 1.9701917e+08 0.058265846 0.034240716 -39.169881 42.924895 6705.5587 1.8571321e+08 0.058483346 0.037661774 -39.258800 42.783669 6707.8913 1.7800954e+08 0.058229581 0.040059146 -39.347721 42.646427 6710.2240 1.7125703e+08 0.057011321 0.040540337 -39.436642 42.510433 6712.5567 1.5987072e+08 0.054889482 0.042863478 -39.521117 42.374437 6714.8893 1.5174663e+08 0.052823867 0.047370268 -39.604806 42.238441 6717.2220 1.4304522e+08 0.050706591 0.049860537 -39.682973 42.118394 6719.5547 1.3983204e+08 0.048845433 0.050842875 -39.760775 41.999402 6721.8873 1.3452339e+08 0.049095195 0.050571254 -39.843010 41.867607 6724.2200 1.3022251e+08 0.046529220 0.048089588 -39.926699 41.731611 6726.5527 1.2312442e+08 0.043054715 0.040956352 -40.010388 41.591217 6728.8853 1.1833809e+08 0.042566496 0.040882898 -40.094077 41.449992 6731.2180 1.1389122e+08 0.040679910 0.042183875 -40.177766 41.313628 6733.5507 1.0451523e+08 0.039399683 0.046914014 -40.261455 41.177634 6735.8833 1.0161352e+08 0.040673515 0.050231152 -40.345144 41.041637 6738.2160 94379281. 0.041989351 0.058510258 -40.428834 40.905641 6740.5487 87943779. 0.041358444 0.064987662 -40.512525 40.769647 6742.8813 86564716. 0.037977634 0.070758286 -40.595202 40.633653 6745.2140 79919061. 0.034457348 0.078656851 -40.673659 40.497659 6747.5467 77157316. 0.030051401 0.067172964 -40.753591 40.360191 6749.8793 71869924. 0.027779537 0.072037170 -40.837280 40.218965 6752.2120 68658446. 0.024639390 0.073889149 -40.919034 40.079675 6754.5447 70130243. 0.023208402 0.075337571 -40.997493 39.943679 6756.8773 66106281. 0.019915308 0.076424431 -41.075952 39.807684 6759.2100 62007885. 0.020017167 0.075870632 -41.154409 39.671689 6761.5427 56608921. 0.019716473 0.078013060 -41.232868 39.535694 6763.8753 53214429. 0.0097467811 0.079103637 -41.311327 39.399698 6766.2080 52770765. 0.023600271 0.080184269 -41.386467 39.263704 6768.5407 50289505. 0.045757055 0.082801509 -41.459694 39.127710