# # 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 = 44.145487 km # Date (UTC) = 2010-12-22T08:28:21.303 # Date (julian) = 2455552.85302434 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6506.0865 1.7735337e+11 0.079943279 0.034118578 124.14064 36.718972 6508.7983 1.3015626e+11 0.091932623 0.034936317 124.22104 36.591290 6511.5101 1.0138477e+11 0.10420559 0.035754056 124.30144 36.463599 6514.2219 8.0515371e+10 0.11667652 0.036571794 124.39082 36.326398 6516.9337 6.4894508e+10 0.12940762 0.037389533 124.48105 36.188219 6519.6455 5.3046070e+10 0.14245533 0.038207272 124.55673 36.060522 6522.3574 4.4661360e+10 0.15506117 0.039010829 124.63239 35.932831 6525.0692 3.8507215e+10 0.16215270 0.039774321 124.70806 35.805142 6527.7810 3.3464758e+10 0.16681966 0.041283468 124.78373 35.677453 6530.4928 2.9355178e+10 0.17074739 0.044518584 124.86312 35.553462 6533.2046 2.5823285e+10 0.17406651 0.047606533 124.94353 35.430484 6535.9164 2.2890842e+10 0.17416366 0.047826766 125.02076 35.304345 6538.6282 2.0315185e+10 0.17573877 0.049462586 125.09642 35.176654 6541.3400 1.7925997e+10 0.17549066 0.051216263 125.17440 35.043043 6544.0518 1.5727050e+10 0.17429310 0.051686392 125.25420 34.904710 6546.7636 1.3780669e+10 0.17313542 0.053092877 125.33121 34.776781 6549.4754 1.2192954e+10 0.17070561 0.054450798 125.40688 34.653819 6552.1873 1.0916818e+10 0.16709037 0.055539634 125.48256 34.528189 6554.8991 9.8439446e+09 0.16188382 0.054851247 125.55823 34.400483 6557.6109 8.8897571e+09 0.15624023 0.053483210 125.63179 34.274903 6560.3227 8.0566773e+09 0.15102028 0.051983369 125.70273 34.151941 6563.0345 7.3313575e+09 0.14677927 0.049888468 125.77524 34.027402 6565.7463 6.6773287e+09 0.14313389 0.047470963 125.85091 33.899711 6568.4581 6.1021937e+09 0.14051030 0.045350550 125.92555 33.773057 6571.1699 5.6027741e+09 0.13808146 0.044456867 125.99648 33.650096 6573.8817 5.1299566e+09 0.13517412 0.042949916 126.06835 33.525528 6576.5935 4.6726680e+09 0.13237929 0.040688220 126.14816 33.387193 6579.3053 4.2361243e+09 0.12900726 0.036902635 126.22597 33.251250 6582.0172 3.8472941e+09 0.12627709 0.035289127 126.29692 33.123543 6584.7290 3.5309566e+09 0.12350417 0.034118417 126.36734 32.996362 6587.4408 3.2592415e+09 0.12075320 0.033256028 126.43355 32.873401 6590.1526 3.0070655e+09 0.11774953 0.030778241 126.49976 32.750441 6592.8644 2.7748946e+09 0.11422099 0.027233938 126.57069 32.627481 6595.5762 2.5642414e+09 0.11033473 0.025683325 126.64163 32.504521 6598.2880 2.3790201e+09 0.10694074 0.025269659 126.71256 32.377389 6600.9998 2.2082962e+09 0.10544942 0.027045604 126.78350 32.249698 6603.7116 2.0302954e+09 0.10310984 0.026241992 126.85718 32.113823 6606.4234 1.8554131e+09 0.10148986 0.026743061 126.93167 31.975468 6609.1352 1.6917722e+09 0.097188722 0.023746106 126.99881 31.850786 6611.8471 1.5509020e+09 0.093167117 0.024418285 127.06502 31.727825 6614.5589 1.4322823e+09 0.091087742 0.023555457 127.13123 31.604865 6617.2707 1.3301496e+09 0.089049196 0.023528990 127.19744 31.481903 6619.9825 1.2420548e+09 0.088299577 0.024762971 127.26365 31.358942 6622.6943 1.1598942e+09 0.087023483 0.024573196 127.32986 31.235981 6625.4061 1.0789664e+09 0.085771177 0.025882203 127.40058 31.101747 6628.1179 9.9208136e+08 0.084286280 0.025750967 127.47506 30.958093 6630.8297 9.1164381e+08 0.082876909 0.025930346 127.54405 30.828194 6633.5415 8.4232857e+08 0.081625025 0.026246798 127.61027 30.705216 6636.2533 7.8591312e+08 0.080181347 0.026451372 127.67648 30.582248 6638.9651 7.3886720e+08 0.079153906 0.025629594 127.74269 30.459287 6641.6770 6.9083308e+08 0.080153876 0.025150599 127.81019 30.329615 6644.3888 6.4282309e+08 0.079406956 0.025385623 127.87936 30.191281 6647.1006 5.9718263e+08 0.078427925 0.026490732 127.94688 30.061510 6649.8124 5.5616539e+08 0.077663642 0.026513860 128.01309 29.938550 6652.5242 5.2119893e+08 0.077304712 0.027394747 128.07721 29.815582 6655.2360 4.9005043e+08 0.076069177 0.027707732 128.13869 29.692605 6657.9478 4.6084401e+08 0.074173875 0.030000539 128.20270 29.564586 6660.6596 4.3208742e+08 0.072458319 0.032225558 128.27187 29.426252 6663.3714 4.0587668e+08 0.070942691 0.032380281 128.33971 29.294818 6666.0832 3.8037583e+08 0.070647490 0.026924815 128.40592 29.171856 6668.7950 3.5506254e+08 0.069470945 0.028174332 128.47312 29.043755 6671.5069 3.3154751e+08 0.069464641 0.026872571 128.54229 28.905422 6674.2187 3.0677768e+08 0.068573712 0.029139247 128.60796 28.774080 6676.9305 2.8760048e+08 0.066014016 0.032313407 128.66945 28.651118 6679.6423 2.7159130e+08 0.065989294 0.029737019 128.73093 28.528157 6682.3541 2.5696016e+08 0.067277209 0.030695081 128.79240 28.405196 6685.0659 2.4156745e+08 0.067586936 0.032774443 128.85442 28.278759 6687.7777 2.2387134e+08 0.065457192 0.033909165 128.91828 28.140404 6690.4895 2.0887338e+08 0.063320565 0.033059765 128.98131 28.007385 6693.2013 1.9563728e+08 0.062304221 0.031535022 129.04279 27.884425 6695.9131 1.8596120e+08 0.061733627 0.029691742 129.10605 27.759132 6698.6249 1.7717800e+08 0.060397555 0.031075625 129.17522 27.626119 6701.3368 1.6705492e+08 0.058080191 0.031903559 129.24251 27.491230 6704.0486 1.5482205e+08 0.057879073 0.036201400 129.30635 27.352897 6706.7604 1.4415269e+08 0.057473614 0.039769771 129.36684 27.221835 6709.4722 1.3414258e+08 0.056277335 0.040832214 129.42360 27.098873 6712.1840 1.2882544e+08 0.053405745 0.042171565 129.48481 26.970399 6714.8958 1.2407031e+08 0.050548371 0.047370755 129.55397 26.832066 6717.6076 1.1889493e+08 0.047572768 0.049836685 129.61719 26.701089 6720.3194 1.1305624e+08 0.045733867 0.050382756 129.67395 26.578111 6723.0312 1.0633872e+08 0.044398172 0.049386359 129.73330 26.451473 6725.7430 1.0128860e+08 0.039193575 0.041111882 129.79714 26.318460 6728.4548 95528702. 0.037606550 0.040272762 129.86099 26.182865 6731.1667 88518944. 0.034893156 0.042081694 129.92483 26.044531 6733.8785 81655249. 0.032540202 0.048693732 129.98868 25.906197 6736.5903 77700172. 0.033868675 0.052586559 130.05253 25.767863 6739.3021 72919020. 0.033932673 0.063196240 130.11122 25.644129 6742.0139 68135260. 0.030674672 0.068644593 130.16797 25.525897 6744.7257 64096033. 0.024484087 0.078354721 130.22906 25.395367 6747.4375 61695708. 0.018317233 0.067210544 130.29291 25.257034 6750.1493 61939980. 0.013872767 0.072259095 130.35676 25.122582 6752.8611 59560427. 0.0052199595 0.073137994 130.42061 24.989549 6755.5729 55707128. -0.034401348 0.074354150 130.47992 24.851995 6758.2847 52366673. -0.0054676763 0.074307449 130.53844 24.713661 6760.9966 49134994. 0.068003840 0.077961650 130.60215 24.575328