# # 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 = 34.022662 km # Date (UTC) = 2016-12-17T10:13:06.473 # Date (julian) = 2457739.92576937 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6514.1469 5.0171319e+10 0.12227819 0.036549167 -33.660558 49.905821 6515.8890 4.5053789e+10 0.13101260 0.037074509 -33.742591 49.835941 6517.6312 4.0493781e+10 0.13983315 0.037599850 -33.824452 49.765891 6519.3733 3.6584133e+10 0.14878242 0.038125191 -33.903447 49.692973 6521.1155 3.3199765e+10 0.15785398 0.038650532 -33.982441 49.620055 6522.8577 3.0121727e+10 0.16464838 0.039141837 -34.061436 49.547137 6524.5998 2.7355896e+10 0.16929873 0.039640043 -34.140438 49.474212 6526.3420 2.4771284e+10 0.17207684 0.040026586 -34.219442 49.401285 6528.0841 2.2405353e+10 0.17562110 0.041509205 -34.298446 49.328359 6529.8263 2.0234503e+10 0.17855349 0.043551940 -34.377445 49.255436 6531.5684 1.8384491e+10 0.17999018 0.046056005 -34.456438 49.182518 6533.3106 1.6721306e+10 0.18138522 0.047651566 -34.535432 49.109600 6535.0527 1.5239586e+10 0.18198409 0.048201430 -34.614426 49.036682 6536.7949 1.3891354e+10 0.18117104 0.048501686 -34.693421 48.963765 6538.5370 1.2635502e+10 0.18051578 0.049418179 -34.772415 48.890848 6540.2792 1.1507596e+10 0.17996294 0.050985988 -34.851410 48.817931 6542.0213 1.0456038e+10 0.17768840 0.051010332 -34.927696 48.745013 6543.7635 9.4908804e+09 0.17520698 0.051582269 -35.003652 48.672095 6545.5056 8.7027748e+09 0.17302778 0.052460097 -35.079608 48.599177 6547.2478 8.0725740e+09 0.17101397 0.053381588 -35.151012 48.530629 6548.9899 7.5664333e+09 0.16828251 0.053963271 -35.219379 48.464997 6550.7321 7.1452871e+09 0.16659779 0.055168665 -35.287747 48.399365 6552.4742 6.7242538e+09 0.16508762 0.055467404 -35.356114 48.333733 6554.2164 6.3123011e+09 0.16262210 0.054836921 -35.428773 48.261229 6555.9585 5.8826883e+09 0.16025643 0.054047969 -35.501690 48.188310 6557.7007 5.4842847e+09 0.15852496 0.053426917 -35.574607 48.115392 6559.4428 5.1174689e+09 0.15585556 0.052337198 -35.649505 48.042474 6561.1850 4.7830688e+09 0.15290074 0.051281524 -35.725461 47.969556 6562.9271 4.4831836e+09 0.15052198 0.049997699 -35.801417 47.896637 6564.6693 4.1924130e+09 0.14790932 0.048468276 -35.876278 47.823720 6566.4114 3.9353567e+09 0.14527584 0.046950134 -35.949196 47.750803 6568.1536 3.7025234e+09 0.14318199 0.045630475 -36.022114 47.677886 6569.8957 3.4795395e+09 0.14118544 0.044910723 -36.095032 47.604968 6571.6379 3.2786743e+09 0.13875011 0.044329054 -36.167960 47.532041 6573.3800 3.0795014e+09 0.13612186 0.043352503 -36.240888 47.459113 6575.1222 2.8877494e+09 0.13360473 0.042252105 -36.313816 47.386185 6576.8643 2.7088440e+09 0.13059787 0.040376509 -36.384372 47.310901 6578.6065 2.5547836e+09 0.12717739 0.037691878 -36.454251 47.234945 6580.3487 2.4096564e+09 0.12421096 0.036198548 -36.524130 47.158989 6582.0908 2.2708455e+09 0.12121470 0.035269085 -36.594010 47.084512 6583.8330 2.1481753e+09 0.11811717 0.034600061 -36.663889 47.011596 6585.5751 2.0224022e+09 0.11563168 0.033510988 -36.733768 46.938679 6587.3173 1.9065114e+09 0.11366425 0.033228662 -36.803647 46.865762 6589.0594 1.7915004e+09 0.11174903 0.032928112 -36.873526 46.792843 6590.8016 1.6840696e+09 0.10968808 0.029571036 -36.943406 46.719925 6592.5437 1.5910843e+09 0.10779780 0.027545414 -37.013285 46.647007 6594.2859 1.5046440e+09 0.10564499 0.026015598 -37.083173 46.574081 6596.0280 1.4203532e+09 0.10314143 0.025727147 -37.153061 46.501155 6597.7702 1.3492570e+09 0.10141710 0.025479691 -37.222949 46.428228 6599.5123 1.2809036e+09 0.10011713 0.024960544 -37.290970 46.355307 6601.2545 1.2053913e+09 0.099757596 0.027165531 -37.357812 46.282388 6602.9966 1.1375115e+09 0.098679939 0.026666155 -37.424654 46.209470 6604.7388 1.0717167e+09 0.097687768 0.026509936 -37.492472 46.136552 6606.4809 1.0159365e+09 0.096680307 0.026639754 -37.562351 46.063634 6608.2231 9.6472111e+08 0.094341717 0.023726473 -37.632230 45.990716 6609.9652 9.0593081e+08 0.091800569 0.023992650 -37.701926 45.917798 6611.7074 8.6075229e+08 0.089366070 0.024507356 -37.765729 45.844881 6613.4495 8.1647110e+08 0.088334950 0.023738525 -37.829532 45.771964 6615.1917 7.7215433e+08 0.087045010 0.023257429 -37.893334 45.699047 6616.9338 7.2939836e+08 0.085677371 0.023428865 -37.959388 45.623877 6618.6760 6.8638271e+08 0.084923772 0.024281246 -38.026239 45.547911 6620.4181 6.5319743e+08 0.084076573 0.024901942 -38.093089 45.471945 6622.1603 6.1828114e+08 0.082846580 0.024715329 -38.159935 45.397344 6623.9024 5.8664956e+08 0.081230262 0.024826166 -38.226776 45.324426 6625.6446 5.5486320e+08 0.080630335 0.026166798 -38.293616 45.251508 6627.3867 5.2671704e+08 0.079292665 0.025466204 -38.359981 45.178590 6629.1289 4.9595957e+08 0.078786078 0.026085800 -38.423785 45.105673 6630.8710 4.6699944e+08 0.077825499 0.025930448 -38.487589 45.032756 6632.6132 4.3892095e+08 0.077174176 0.026105873 -38.551392 44.959839 6634.3554 4.1479238e+08 0.076342681 0.026352764 -38.615195 44.886921 6636.0975 3.9519362e+08 0.075450727 0.026511888 -38.678998 44.814003 6637.8397 3.7080988e+08 0.075118361 0.025750175 -38.742800 44.741085 6639.5818 3.5170375e+08 0.075089755 0.025420124 -38.804865 44.668162 6641.3240 3.3220104e+08 0.075844482 0.025149400 -38.865638 44.595235 6643.0661 3.2175274e+08 0.075672455 0.025202600 -38.926411 44.522308 6644.8083 3.0755784e+08 0.075122011 0.025430962 -38.988041 44.448525 6646.5504 2.9432632e+08 0.074399864 0.026205059 -39.051844 44.372569 6648.2926 2.8072943e+08 0.073805720 0.027160128 -39.115646 44.296614 6650.0347 2.6178210e+08 0.073656635 0.026263184 -39.179437 44.220670 6651.7769 2.4867775e+08 0.073346086 0.027079522 -39.240240 44.147713 6653.5190 2.3367406e+08 0.073117407 0.027790654 -39.301005 44.074795 6655.2612 2.2189143e+08 0.072058552 0.027718132 -39.361770 44.001877 6657.0033 2.1791012e+08 0.070316756 0.028904964 -39.422534 43.928960 6658.7455 2.0220822e+08 0.069144811 0.031383191 -39.483299 43.856043 6660.4876 1.9273708e+08 0.067951446 0.032069225 -39.544064 43.783126 6662.2298 1.8468710e+08 0.066573733 0.032915353 -39.604832 43.710205 6663.9719 1.7809384e+08 0.065111798 0.032213868 -39.665604 43.637277 6665.7141 1.8106609e+08 0.064797927 0.027377086 -39.726376 43.564349 6667.4562 1.7066012e+08 0.064015268 0.027271039 -39.787147 43.491064 6669.1984 1.6229758e+08 0.062608892 0.028151950 -39.847912 43.415109 6670.9405 1.5134711e+08 0.062219210 0.026892898 -39.908677 43.339153 6672.6827 1.4135964e+08 0.061314763 0.027275296 -39.969442 43.263197 6674.4248 1.3359897e+08 0.059607926 0.029313169 -40.033659 43.182219 6676.1670 1.2567039e+08 0.056901764 0.031821347 -40.098601 43.100185 6677.9091 1.1954076e+08 0.055311105 0.031065780 -40.163544 43.018151 6679.6513 1.1119367e+08 0.054262548 0.029729573 -40.221988 42.944328 6681.3934 1.0934042e+08 0.054239624 0.029959202 -40.279715 42.871411 6683.1356 1.0201167e+08 0.053641665 0.031387297 -40.337443 42.798494 6684.8777 95960082. 0.052420740 0.032698634 -40.395174 42.725570 6686.6199 95087555. 0.050521227 0.034121751 -40.452908 42.652642 6688.3620 86151020. 0.046612258 0.033868764 -40.510642 42.579714 6690.1042 82232724. 0.043547243 0.033103922 -40.568374 42.506790 6691.8464 74678522. 0.039119391 0.032801579 -40.626101 42.433873 6693.5885 71310129. 0.031873466 0.031402195 -40.683828 42.360956 6695.3307 72059561. -0.0043610433 0.029798736 -40.741749 42.287702 6697.0728 66920383. 0.025839109 0.030100479 -40.806692 42.202250 6698.8150 59469893. 0.10020930 0.031336442 -40.871635 42.116799