# # 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 = 44.880155 km # Date (UTC) = 2015-12-27T09:18:06.440 # Date (julian) = 2457383.88757454 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6497.3929 5.2530862e+10 0.033495940 0.031497050 -19.411636 49.576324 6499.5554 6.1195931e+10 0.041805468 0.032149138 -19.513460 49.485813 6501.7179 6.1646422e+10 0.050010758 0.032801226 -19.611755 49.395304 6503.8803 5.6451281e+10 0.057937619 0.033453313 -19.709808 49.304794 6506.0428 5.2821914e+10 0.066508401 0.034105401 -19.807864 49.214281 6508.2053 4.8641407e+10 0.075405616 0.034757489 -19.905930 49.123759 6510.3677 4.5290726e+10 0.085014084 0.035409577 -20.003996 49.033236 6512.5302 4.1748114e+10 0.095071226 0.036061664 -20.102052 48.942721 6514.6927 3.8375474e+10 0.10571521 0.036713752 -20.200104 48.852210 6516.8552 3.5025706e+10 0.11683902 0.037365840 -20.298156 48.761700 6519.0176 3.1680553e+10 0.12837763 0.038017927 -20.396209 48.667489 6521.1801 2.8934020e+10 0.14067372 0.038670015 -20.494262 48.573208 6523.3426 2.6614927e+10 0.14981624 0.039264021 -20.591072 48.480169 6525.5051 2.4771040e+10 0.15696753 0.039724574 -20.685353 48.389660 6527.6675 2.2981534e+10 0.16369387 0.041201103 -20.779635 48.299150 6529.8300 2.1022065e+10 0.16938987 0.043557898 -20.871367 48.208632 6531.9925 1.9237943e+10 0.17407925 0.046673231 -20.961889 48.118109 6534.1549 1.7607685e+10 0.17639523 0.047987900 -21.052511 48.027487 6536.3174 1.6109928e+10 0.17689668 0.048074500 -21.146793 47.933205 6538.4799 1.4729506e+10 0.17747546 0.049390360 -21.241074 47.838924 6540.6424 1.3429046e+10 0.17636538 0.051157569 -21.333941 47.746057 6542.8048 1.2296169e+10 0.17412080 0.051307796 -21.424452 47.655548 6544.9673 1.1346267e+10 0.17245732 0.052429042 -21.514963 47.565038 6547.1298 1.0511302e+10 0.17028810 0.053336715 -21.605473 47.474528 6549.2922 9.7608057e+09 0.16811293 0.054264103 -21.695983 47.384018 6551.4547 9.1005319e+09 0.16651341 0.055395364 -21.786494 47.293236 6553.6172 8.5036280e+09 0.16463294 0.055024813 -21.877016 47.198942 6555.7797 7.9603527e+09 0.16249587 0.054198261 -21.967538 47.104648 6557.9421 7.4440247e+09 0.16065044 0.053275574 -22.056470 47.011945 6560.1046 6.9819177e+09 0.15814575 0.052179992 -22.143208 46.921436 6562.2671 6.5810724e+09 0.15521055 0.050625767 -22.229947 46.830926 6564.4296 6.1989088e+09 0.15224890 0.048576925 -22.325022 46.728455 6566.5920 5.7936955e+09 0.14987685 0.046847978 -22.422605 46.622387 6568.7545 5.3725986e+09 0.14767031 0.045078101 -22.515722 46.522726 6570.9170 4.9879282e+09 0.14572249 0.044537670 -22.602460 46.432215 6573.0794 4.6461706e+09 0.14344520 0.043593733 -22.689199 46.341704 6575.2419 4.3505011e+09 0.14059254 0.042131994 -22.775947 46.248318 6577.4044 4.0708203e+09 0.13733084 0.039585183 -22.862698 46.154024 6579.5669 3.8102244e+09 0.13368440 0.036758872 -22.949037 46.060142 6581.7293 3.5726931e+09 0.13019678 0.035375758 -23.032004 45.969633 6583.8918 3.3445915e+09 0.12681798 0.034570277 -23.114971 45.879123 6586.0543 3.1384770e+09 0.12382265 0.033170595 -23.197939 45.788614 6588.2167 2.9483243e+09 0.12183055 0.033307548 -23.280906 45.698103 6590.3792 2.7715650e+09 0.11951763 0.030356665 -23.363874 45.607592 6592.5417 2.6035723e+09 0.11726554 0.027547381 -23.446841 45.514043 6594.7042 2.4500907e+09 0.11494456 0.025785973 -23.529809 45.419762 6596.8666 2.3075125e+09 0.11233005 0.025723334 -23.612198 45.326060 6599.0291 2.1750491e+09 0.11039054 0.024931481 -23.691405 45.235537 6601.1916 2.0491721e+09 0.11035043 0.027135912 -23.770611 45.145014 6603.3540 1.9275353e+09 0.10913509 0.026453678 -23.849813 45.052602 6605.5165 1.8252182e+09 0.10836613 0.027098363 -23.929010 44.958320 6607.6790 1.7279840e+09 0.10636535 0.024366239 -24.008206 44.864039 6609.8415 1.6369565e+09 0.10319312 0.023955886 -24.090612 44.772968 6612.0039 1.5534384e+09 0.10049307 0.024317809 -24.173579 44.682459 6614.1664 1.4700768e+09 0.099243746 0.023825843 -24.255043 44.591197 6616.3289 1.3948774e+09 0.097427919 0.023333917 -24.330468 44.496916 6618.4914 1.3201333e+09 0.096459332 0.024141826 -24.405893 44.402635 6620.6538 1.2441921e+09 0.095385189 0.024977892 -24.483390 44.310412 6622.8163 1.1764445e+09 0.093623847 0.024540721 -24.562597 44.219889 6624.9788 1.1190225e+09 0.091733033 0.025386240 -24.641803 44.129366 6627.1412 1.0671356e+09 0.089168188 0.025371370 -24.717620 44.035474 6629.3037 1.0231581e+09 0.087491445 0.026054192 -24.793045 43.941193 6631.4662 9.7670885e+08 0.085261745 0.025978121 -24.871818 43.845064 6633.6287 9.1808861e+08 0.083623558 0.026262010 -24.960915 43.743240 6635.7911 8.6099246e+08 0.082135784 0.026518430 -25.050012 43.641415 6637.9536 8.0380040e+08 0.081333768 0.025694366 -25.123621 43.546288 6640.1161 7.5570502e+08 0.081521510 0.025256450 -25.195276 43.452006 6642.2785 7.2283870e+08 0.081689240 0.025163095 -25.267821 43.358616 6644.4410 6.9085213e+08 0.080821984 0.025391271 -25.343246 43.268105 6646.6035 6.5917700e+08 0.079880409 0.026232534 -25.418672 43.177594 6648.7660 6.2466145e+08 0.078865637 0.027477022 -25.494102 43.084872 6650.9284 5.9014484e+08 0.078569795 0.026467782 -25.569537 42.990578 6653.0909 5.6226972e+08 0.078264411 0.027572075 -25.644972 42.896285 6655.2534 5.3789325e+08 0.076950656 0.027714913 -25.716877 42.805523 6657.4159 5.1612256e+08 0.075180394 0.029383486 -25.788531 42.715014 6659.5783 4.9358732e+08 0.073713241 0.031713960 -25.862709 42.620122 6661.7408 4.6694336e+08 0.072328990 0.032912253 -25.943322 42.514053 6663.9033 4.3806259e+08 0.071026474 0.032232895 -26.023934 42.407984 6666.0657 4.1084976e+08 0.071130169 0.026921405 -26.096261 42.316303 6668.2282 3.9107316e+08 0.070278870 0.027672726 -26.167915 42.225792 6670.3907 3.7574818e+08 0.069809421 0.027147635 -26.239571 42.134248 6672.5532 3.6165536e+08 0.069415247 0.027200218 -26.311234 42.039954 6674.7156 3.4637974e+08 0.068078509 0.029558470 -26.382898 41.945661 6676.8781 3.2830802e+08 0.065795789 0.032279654 -26.457487 41.844045 6679.0406 3.1002614e+08 0.065114630 0.030234244 -26.533856 41.737977 6681.2030 2.8939493e+08 0.066289020 0.029813131 -26.608977 41.636029 6683.3655 2.7268115e+08 0.066952623 0.031724249 -26.680631 41.545519 6685.5280 2.6043112e+08 0.066826333 0.033262524 -26.752285 41.455008 6687.6905 2.5226514e+08 0.064890067 0.033957823 -26.821626 41.362185 6689.8529 2.5472493e+08 0.062816833 0.033248248 -26.889508 41.267903 6692.0154 2.2783229e+08 0.062127228 0.032747440 -26.957390 41.173622 6694.1779 2.0635708e+08 0.061570848 0.031011723 -27.033433 41.072087 6696.3403 1.8781924e+08 0.061696966 0.029817194 -27.109803 40.970262 6698.5028 1.7764479e+08 0.060877364 0.030907997 -27.181046 40.872991 6700.6653 1.8501853e+08 0.059105567 0.031161185 -27.248938 40.778697 6702.8278 1.7583036e+08 0.058625010 0.033537704 -27.316830 40.684403 6704.9902 1.6775226e+08 0.058985791 0.036663812 -27.388758 40.582929 6707.1527 1.5787462e+08 0.058773771 0.040164951 -27.460885 40.481103 6709.3152 1.5107871e+08 0.058183381 0.040932072 -27.530480 40.386025 6711.4777 1.4364014e+08 0.056428633 0.041235671 -27.598363 40.295515 6713.6401 1.3832044e+08 0.054421724 0.046001821 -27.666246 40.205006 6715.8026 1.2955190e+08 0.052769630 0.048199462 -27.738138 40.099798 6717.9651 1.2012671e+08 0.050860047 0.049814574 -27.810264 39.993730 6720.1275 1.0964982e+08 0.049948295 0.050404988 -27.877680 39.896805 6722.2900 1.0234062e+08 0.049912815 0.050246671 -27.941791 39.806295 6724.4525 97313419. 0.046984398 0.046148112 -28.005903 39.715784 6726.6150 91777577. 0.044228364 0.040956914 -28.077517 39.610710 6728.7774 84776020. 0.043976226 0.040729973 -28.149643 39.504642 6730.9399 79369437. 0.042455576 0.041667624 -28.217133 39.407577 6733.1024 77446435. 0.041447876 0.044480127 -28.281253 39.317055 6735.2648 72463503. 0.042081478 0.049574587 -28.345373 39.226534 6737.4273 72040249. 0.043825314 0.055496799 -28.412985 39.121587 6739.5898 66533581. 0.044355658 0.063548343 -28.480869 39.015519 6741.7523 65297037. 0.042696050 0.067904189 -28.551174 38.911873 6743.9147 64090398. 0.038235397 0.077218216 -28.623301 38.810047 6746.0772 60089399. 0.037012643 0.078089660 -28.694520 38.707313 6748.2397 58814940. 0.033443211 0.068277859 -28.762403 38.601245 6750.4022 55695013. 0.030938006 0.072690821 -28.830287 38.495177 6752.5646 54534587. 0.028377967 0.073481102 -28.891706 38.402441 6754.7271 54346117. 0.027021948 0.075044211 -28.952046 38.311932 6756.8896 57432716. 0.024382163 0.076455897 -29.013934 38.219100 6759.0520 57214258. 0.025436911 0.075832512 -29.081818 38.117273 6761.2145 57441811. 0.026610482 0.077985948 -29.149702 38.015446 6763.3770 56380103. 0.031654459 0.077585876 -29.217586 37.910022 6765.5395 53161412. 0.033978232 0.079629673 -29.285470 37.803953 6767.7019 54349959. 0.032184770 0.081189789 -29.353358 37.699962 6769.8644 48640597. 0.027692624 0.086550811 -29.421252 37.598121 6772.0269 47623017. 0.023581480 0.091795756 -29.488573 37.495710 6774.1893 46010993. 0.018181636 0.097040702 -29.552213 37.389642 6776.3518 43617539. 0.015695749 0.10228565 -29.615854 37.283574 6778.5143 42404746. 0.014867023 0.10753059 -29.682796 37.180805