# # 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 = 51.452649 km # Date (UTC) = 2014-12-31T08:46:10.003 # Date (julian) = 2457022.86539356 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6494.0399 1.0270365e+11 0.032047196 0.030485959 -11.553737 49.423345 6496.2332 8.9602800e+10 0.039008702 0.031147338 -11.657012 49.331545 6498.4265 7.8659841e+10 0.045587694 0.031808717 -11.767827 49.225935 6500.6198 6.9724947e+10 0.051899741 0.032470096 -11.879727 49.118340 6502.8130 6.2324015e+10 0.058120269 0.033131475 -11.982663 49.019444 6505.0063 5.6491132e+10 0.064482456 0.033792854 -12.078288 48.927645 6507.1996 5.1730073e+10 0.071191199 0.034454233 -12.173913 48.835846 6509.3929 4.7865099e+10 0.078516569 0.035115612 -12.273119 48.740465 6511.5862 4.4293941e+10 0.086565115 0.035776991 -12.372568 48.644840 6513.7795 4.1242979e+10 0.095571436 0.036438370 -12.470786 48.549215 6515.9727 3.8563308e+10 0.10569823 0.037099749 -12.566411 48.453590 6518.1660 3.6085564e+10 0.11692176 0.037761128 -12.662036 48.357966 6520.3593 3.3550969e+10 0.12907562 0.038422507 -12.766119 48.256926 6522.5526 3.0822826e+10 0.14047901 0.039061956 -12.873699 48.153649 6524.7459 2.8122426e+10 0.14846925 0.039691939 -12.975228 48.053304 6526.9392 2.5704931e+10 0.15562389 0.040652695 -13.067040 47.957666 6529.1325 2.3670092e+10 0.16161846 0.042446770 -13.158853 47.862029 6531.3257 2.1883017e+10 0.16783934 0.045702793 -13.250655 47.769345 6533.5190 2.0200024e+10 0.17264235 0.047740156 -13.342455 47.677544 6535.7123 1.8657700e+10 0.17366050 0.047915302 -13.434255 47.585150 6537.9056 1.7269255e+10 0.17434862 0.049112171 -13.526054 47.489525 6540.0989 1.6000376e+10 0.17345085 0.050900812 -13.617854 47.393900 6542.2922 1.4758169e+10 0.17079465 0.051113157 -13.715862 47.291809 6544.4854 1.3516990e+10 0.16883696 0.052038148 -13.819138 47.184230 6546.6787 1.2349515e+10 0.16694979 0.053023008 -13.919096 47.080073 6548.8720 1.1321056e+10 0.16505568 0.053928058 -14.007082 46.988262 6551.0653 1.0459616e+10 0.16364978 0.055258670 -14.095069 46.896450 6553.2586 9.7228131e+09 0.16258346 0.055205083 -14.183048 46.802340 6555.4519 9.0511717e+09 0.16093526 0.054473692 -14.271023 46.706715 6557.6451 8.4658276e+09 0.15929168 0.053461727 -14.358997 46.611090 6559.8384 7.9388689e+09 0.15727132 0.052292546 -14.446972 46.515465 6562.0317 7.4747257e+09 0.15489317 0.050849725 -14.534947 46.419841 6564.2250 6.9830094e+09 0.15233128 0.048669628 -14.627038 46.319742 6566.4183 6.4690269e+09 0.15056308 0.046946262 -14.726011 46.212163 6568.6116 5.9669548e+09 0.14908214 0.045209486 -14.824237 46.105378 6570.8049 5.5222355e+09 0.14778119 0.044584112 -14.908387 46.013577 6572.9981 5.1678780e+09 0.14612277 0.043658549 -14.992537 45.921777 6575.1914 4.8551104e+09 0.14388286 0.042182653 -15.076692 45.828304 6577.3847 4.5733970e+09 0.14113849 0.039616095 -15.160853 45.732666 6579.5780 4.3082816e+09 0.13793032 0.036752751 -15.245014 45.637029 6581.7713 4.0805143e+09 0.13497933 0.035363057 -15.329166 45.541402 6583.9646 3.8707047e+09 0.13223155 0.034533451 -15.413315 45.445777 6586.1578 3.6651319e+09 0.13002778 0.033169256 -15.498755 45.347671 6588.3511 3.4480671e+09 0.12864467 0.033262671 -15.589122 45.240092 6590.5444 3.2196622e+09 0.12669149 0.030049380 -15.679489 45.132512 6592.7377 3.0126028e+09 0.12477185 0.027357000 -15.764362 45.038877 6594.9310 2.8341205e+09 0.12264553 0.025661461 -15.848511 44.947079 6597.1243 2.6928371e+09 0.12012983 0.025683515 -15.931634 44.854246 6599.3175 2.5652228e+09 0.11853399 0.024948829 -16.011970 44.758608 6601.5108 2.4366401e+09 0.11833350 0.027286262 -16.092306 44.662971 6603.7041 2.3125282e+09 0.11690200 0.026246440 -16.176395 44.559508 6605.8974 2.1754500e+09 0.11644495 0.027417889 -16.262458 44.451929 6608.0907 2.0433579e+09 0.11418501 0.023729974 -16.346619 44.348311 6610.2840 1.9270469e+09 0.11102191 0.024274303 -16.426945 44.252686 6612.4773 1.8317917e+09 0.10883410 0.023964168 -16.507270 44.157061 6614.6705 1.7499326e+09 0.10735420 0.023478520 -16.584852 44.061437 6616.8638 1.6804158e+09 0.10542107 0.023417875 -16.661351 43.965812 6619.0571 1.6072433e+09 0.10418759 0.024539693 -16.738832 43.869402 6621.2504 1.5256746e+09 0.10285500 0.025006454 -16.824896 43.766125 6623.4437 1.4404905e+09 0.10073086 0.024656199 -16.910960 43.662848 6625.6370 1.3562222e+09 0.098972437 0.026157684 -16.989583 43.565520 6627.8302 1.2808097e+09 0.096589391 0.025637519 -17.066093 43.469883 6630.0235 1.2256342e+09 0.094651242 0.025928360 -17.142601 43.374247 6632.2168 1.1805267e+09 0.092439594 0.026058342 -17.219101 43.278623 6634.4101 1.1336972e+09 0.090826459 0.026356757 -17.295601 43.182998 6636.6034 1.0873348e+09 0.089416952 0.026315437 -17.374996 43.080794 6638.7967 1.0272710e+09 0.088546100 0.025636934 -17.456756 42.973215 6640.9899 9.6948356e+08 0.089316052 0.025149531 -17.537326 42.868343 6643.1832 9.1831792e+08 0.088978715 0.025220284 -17.613825 42.772718 6645.3765 8.7469078e+08 0.088014156 0.025628067 -17.690325 42.677093 6647.5698 8.3414654e+08 0.086950068 0.026737781 -17.764483 42.583810 6649.7631 8.0108048e+08 0.086022202 0.026581816 -17.837158 42.492011 6651.9564 7.6895437e+08 0.085426665 0.027217082 -17.909879 42.400132 6654.1497 7.3338060e+08 0.084649667 0.027972473 -17.991585 42.292653 6656.3429 6.9834440e+08 0.082762558 0.028324409 -18.073358 42.185057 6658.5362 6.5518334e+08 0.081265503 0.031012074 -18.146418 42.085532 6660.7295 6.2316060e+08 0.079779315 0.032289081 -18.215268 41.989908 6662.9228 5.9919515e+08 0.078364032 0.032526534 -18.284890 41.893568 6665.1161 5.7628598e+08 0.077527861 0.028356944 -18.366650 41.785988 6667.3094 5.5428359e+08 0.076815212 0.027217089 -18.448411 41.678408 6669.5026 5.2381397e+08 0.075727255 0.027839457 -18.520669 41.579626 6671.6959 4.9862882e+08 0.075453879 0.026875266 -18.589519 41.484002 6673.8892 4.7631694e+08 0.074492731 0.028789093 -18.659415 41.387447 6676.0825 4.5476858e+08 0.071981443 0.031766890 -18.736873 41.284170 6678.2758 4.3358900e+08 0.070773929 0.030752163 -18.814330 41.180893 6680.4691 4.0933806e+08 0.071138022 0.029542706 -18.884921 41.083720 6682.6623 3.8971814e+08 0.071789100 0.030930599 -18.953771 40.988096 6684.8556 3.7156032e+08 0.071807914 0.032697511 -19.024201 40.890277 6687.0489 3.5318143e+08 0.070282621 0.034315621 -19.101670 40.782680 6689.2422 3.3501800e+08 0.067715483 0.033798008 -19.179140 40.675084 6691.4355 3.1738254e+08 0.066885628 0.032898518 -19.245909 40.577781 6693.6288 3.0111738e+08 0.066037536 0.031388383 -19.310934 40.482157 6695.8220 2.9030501e+08 0.065778219 0.029708473 -19.379010 40.383598 6698.0153 2.7451137e+08 0.065072141 0.030238864 -19.456467 40.276019 6700.2086 2.5891730e+08 0.063467934 0.030822456 -19.533925 40.168439 6702.4019 2.4320905e+08 0.062267425 0.033197651 -19.607415 40.064825 6704.5952 2.2913145e+08 0.062622818 0.036469821 -19.680569 39.961548 6706.7885 2.2001495e+08 0.062348773 0.039818675 -19.748864 39.862844 6708.9818 2.0951719e+08 0.061774017 0.041112675 -19.813889 39.767219 6711.1750 1.9860213e+08 0.060017163 0.040891379 -19.878914 39.671594 6713.3683 1.8706670e+08 0.057953803 0.045018769 -19.951932 39.564214 6715.5616 1.8002842e+08 0.055998177 0.047952984 -20.025087 39.456634 6717.7549 1.7494563e+08 0.053836128 0.049827575 -20.098248 39.349044 6719.9482 1.6938839e+08 0.052453010 0.050469004 -20.171413 39.241449 6722.1415 1.6284639e+08 0.052394593 0.050430323 -20.240558 39.139160 6724.3347 1.5715140e+08 0.049530383 0.047131337 -20.301758 39.047361 6726.5280 1.5003826e+08 0.046346532 0.040956130 -20.362958 38.955562 6728.7213 1.4595517e+08 0.045851907 0.040650435 -20.432783 38.852377 6730.9146 1.4087859e+08 0.044189046 0.041632926 -20.505937 38.744798 6733.1079 1.3342261e+08 0.043104712 0.044510020 -20.577380 38.637218 6735.3012 1.2824227e+08 0.043656819 0.049613141 -20.646231 38.529638 6737.4944 1.2298870e+08 0.045355845 0.055710644 -20.715082 38.422375 6739.6877 1.2103996e+08 0.045656740 0.063668206 -20.783934 38.319098 6741.8810 1.1816143e+08 0.043782246 0.068271404 -20.852786 38.215821 6744.0743 1.1473782e+08 0.039143610 0.077850882 -20.921637 38.109318 6746.2676 1.1042441e+08 0.037230503 0.075876300 -20.990487 38.001738 6748.4609 1.0495289e+08 0.034411085 0.069441550 -21.059338 37.894159 6750.6542 1.0064953e+08 0.031751153 0.073121125 -21.128189 37.786579 6752.8474 95913455. 0.029116902 0.073153833 -21.196600 37.679000 6755.0407 91489263. 0.027482672 0.074587492 -21.261148 37.571420 6757.2340 88937465. 0.025204733 0.076029910 -21.325696 37.463840 6759.4273 85530882. 0.026308839 0.075923067 -21.387644 37.368534 6761.6206 84777292. 0.028800421 0.078019496 -21.448851 37.276723 6763.8139 86230899. 0.032896092 0.078916388 -21.510608 37.182320 6766.0071 85956765. 0.034867174 0.079729904 -21.575156 37.074741 6768.2004 82117111. 0.031699880 0.081577209 -21.639703 36.967162 6770.3937 74312953. 0.027309808 0.087834623 -21.712002 36.846663 6772.5870 66659279. 0.023493841 0.093154301 -21.785772 36.723712 6774.7803 62773699. 0.019659588 0.098473980 -21.855572 36.616641 6776.9736 62305591. 0.015820257 0.10379366 -21.924423 36.513364 6779.1668 60675993. 0.012012965 0.10911334 -21.989115 36.408008 6781.3601 61352602. 0.0082073850 0.11443301 -22.049360 36.300427 6783.5534 59128982. 0.0044286010 0.11975269 -22.110291 36.193534 6785.7467 56178201. 0.00064861085 0.12507237 -22.174839 36.090258 6787.9400 56397593. -0.0031703710 0.13039205 -22.239386 35.986983 6790.1333 51610874. -0.0069705955 0.13571173 -22.303934 35.880111 6792.3266 50528877. -0.010828579 0.14103141 -22.368481 35.772532 6794.5198 51341334. -0.014748410 0.14635109 -22.433029 35.664952 6796.7131 48921690. -0.018733811 0.15167076 -22.497576 35.557373 6798.9064 48854799. -0.022846847 0.15699044 -22.562933 35.447830 6801.0997 45090060. -0.027666919 0.16231012 -22.631786 35.329796 6803.2930 41961458. -0.037114717 0.16762980 -22.699309 35.213378 6805.4863 43939327. -0.036414501 0.17294948 -22.759553 35.105798 6807.6795 45715273. -0.031531710 0.17826916 -22.819798 34.998218