# # 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 = 56.143213 km # Date (UTC) = 2015-01-07T09:48:53.036 # Date (julian) = 2457029.90894718 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6493.3400 8.0165749e+10 0.025324254 0.030274890 108.18044 35.009212 6495.4962 7.2960622e+10 0.031967890 0.030925090 108.23821 34.905630 6497.6524 6.5741206e+10 0.038544838 0.031575290 108.30590 34.787178 6499.8086 5.8910411e+10 0.045115899 0.032225490 108.37358 34.668725 6501.9648 5.2910190e+10 0.051798331 0.032875690 108.43807 34.553477 6504.1210 4.7520740e+10 0.058695464 0.033525890 108.50153 34.439255 6506.2772 4.3012669e+10 0.066004746 0.034176090 108.56498 34.323367 6508.4334 3.9097704e+10 0.073882159 0.034826290 108.62844 34.204915 6510.5897 3.5693950e+10 0.082487195 0.035476490 108.69190 34.086589 6512.7459 3.2573653e+10 0.091822728 0.036126690 108.75536 33.972350 6514.9021 2.9718556e+10 0.10196970 0.036776890 108.81882 33.858111 6517.0583 2.7241486e+10 0.11303212 0.037427090 108.87758 33.752341 6519.2145 2.5200373e+10 0.12518264 0.038077290 108.93399 33.650812 6521.3707 2.3568030e+10 0.13843643 0.038727491 108.99042 33.549113 6523.5269 2.1998281e+10 0.14801379 0.039309709 109.04964 33.430711 6525.6831 2.0411824e+10 0.15566985 0.039704250 109.10887 33.312259 6527.8393 1.8801374e+10 0.16342940 0.041325848 109.17082 33.196528 6529.9956 1.7319383e+10 0.17036542 0.043821624 109.23427 33.082305 6532.1518 1.5979047e+10 0.17512837 0.046810981 109.29773 32.968083 6534.3080 1.4682719e+10 0.17701676 0.048030712 109.36119 32.853860 6536.4642 1.3505109e+10 0.17660044 0.048205830 109.42465 32.739638 6538.6204 1.2491196e+10 0.17593276 0.049458787 109.47820 32.633595 6540.7766 1.1650468e+10 0.17437638 0.051220998 109.53085 32.528306 6542.9328 1.0923833e+10 0.17234846 0.051356393 109.58518 32.420723 6545.0890 1.0213412e+10 0.17074843 0.052456365 109.64442 32.306484 6547.2453 9.5061673e+09 0.16875813 0.053380632 109.70365 32.192245 6549.4015 8.8090610e+09 0.16683459 0.054375410 109.76288 32.078021 6551.5577 8.1800489e+09 0.16538057 0.055431506 109.82210 31.963798 6553.7139 7.5853107e+09 0.16357135 0.054976202 109.88133 31.849576 6555.8701 7.0225177e+09 0.16165695 0.054122267 109.94056 31.735354 6558.0263 6.5271840e+09 0.16016398 0.053216878 109.99869 31.623228 6560.1825 6.1066650e+09 0.15796630 0.052109734 110.05134 31.521700 6562.3387 5.7780101e+09 0.15543707 0.050557577 110.10398 31.420171 6564.4950 5.4930302e+09 0.15285728 0.048547283 110.15996 31.310081 6566.6512 5.2041447e+09 0.15078883 0.046814521 110.21918 31.191628 6568.8074 4.9171717e+09 0.14883504 0.045029488 110.27781 31.073776 6570.9636 4.6286420e+09 0.14725669 0.044518357 110.33281 30.959554 6573.1198 4.3529224e+09 0.14537905 0.043561341 110.38780 30.845332 6575.2760 4.0945783e+09 0.14300472 0.042097776 110.44609 30.731109 6577.4322 3.8470052e+09 0.14020916 0.039541446 110.50532 30.616887 6579.5884 3.6354662e+09 0.13721352 0.036747005 110.56026 30.507919 6581.7447 3.4593685e+09 0.13473486 0.035371118 110.60915 30.406377 6583.9009 3.3019878e+09 0.13262408 0.034565689 110.65804 30.304835 6586.0571 3.1630820e+09 0.13088221 0.033170558 110.71154 30.193714 6588.2133 3.0191961e+09 0.12971516 0.033308702 110.76654 30.079492 6590.3695 2.8701663e+09 0.12783830 0.030374736 110.82320 29.965269 6592.5257 2.7270195e+09 0.12583934 0.027562897 110.88242 29.851047 6594.6819 2.5898389e+09 0.12379912 0.025798178 110.94153 29.736825 6596.8381 2.4499147e+09 0.12152109 0.025723463 110.99653 29.622602 6598.9944 2.3193045e+09 0.11989475 0.024932427 111.05152 29.508380 6601.1506 2.2025943e+09 0.12015316 0.027116596 111.10246 29.402586 6603.3068 2.1095956e+09 0.11913852 0.026481663 111.15134 29.301058 6605.4630 2.0352822e+09 0.11848336 0.027053453 111.20024 29.199428 6607.6192 1.9613634e+09 0.11667666 0.024484308 111.25100 29.085248 6609.7754 1.8809287e+09 0.11368395 0.023936265 111.30177 28.971025 6611.9316 1.7961666e+09 0.11118948 0.024364355 111.35524 28.856803 6614.0878 1.7163479e+09 0.11013576 0.023879976 111.41024 28.742581 6616.2440 1.6370422e+09 0.10853664 0.023320602 111.46523 28.628354 6618.4003 1.5613807e+09 0.10779082 0.024073041 111.52024 28.514114 6620.5565 1.4886250e+09 0.10687236 0.024946521 111.57525 28.399875 6622.7127 1.4146759e+09 0.10533060 0.024568300 111.62638 28.285652 6624.8689 1.3486593e+09 0.10357908 0.025327426 111.67714 28.171430 6627.0251 1.2875207e+09 0.10127968 0.025326510 111.72687 28.064186 6629.1813 1.2365217e+09 0.10007905 0.026076321 111.77576 27.962657 6631.3375 1.1920875e+09 0.098406638 0.025965053 111.82464 27.861128 6633.4937 1.1471599e+09 0.097248002 0.026238456 111.87520 27.748297 6635.6500 1.1007632e+09 0.096018672 0.026497259 111.92596 27.634075 6637.8062 1.0565754e+09 0.095098675 0.025766574 111.97896 27.522080 6639.9624 1.0154152e+09 0.095053852 0.025284097 112.03396 27.412088 6642.1186 9.7385950e+08 0.095276205 0.025156549 112.08827 27.301407 6644.2748 9.3714386e+08 0.094322369 0.025373307 112.13903 27.187184 6646.4310 8.9684288e+08 0.093379377 0.026143257 112.18979 27.072962 6648.5872 8.5887264e+08 0.092320278 0.027357380 112.24056 26.958741 6650.7434 8.2216135e+08 0.091838234 0.026425432 112.29132 26.844519 6652.8997 7.8299869e+08 0.091495785 0.027498053 112.34209 26.730290 6655.0559 7.4602060e+08 0.090320106 0.027633301 112.39287 26.616051 6657.2121 7.1379269e+08 0.088410087 0.029147119 112.44324 26.502992 6659.3683 6.8219808e+08 0.086876415 0.031757772 112.48836 26.405224 6661.5245 6.5785976e+08 0.085364372 0.032802092 112.53348 26.307455 6663.6807 6.3694428e+08 0.083855375 0.032294569 112.58093 26.202901 6665.8369 6.1188081e+08 0.083594606 0.027175791 112.63170 26.088679 6667.9931 5.9225435e+08 0.082682448 0.027468256 112.68226 25.974456 6670.1494 5.6739409e+08 0.081934099 0.027259439 112.72879 25.860233 6672.3056 5.4234432e+08 0.081454462 0.027056711 112.77533 25.746011 6674.4618 5.1873713e+08 0.080180906 0.029344332 112.82476 25.634686 6676.6180 4.9860175e+08 0.077787950 0.032112016 112.87553 25.524696 6678.7742 4.8086382e+08 0.076918466 0.030418794 112.92629 25.413347 6680.9304 4.6228053e+08 0.077851171 0.029642332 112.97706 25.299125 6683.0866 4.4166219e+08 0.078563899 0.031315535 113.02782 25.184903 6685.2428 4.2022541e+08 0.078429530 0.032961337 113.07454 25.070680 6687.3991 4.0619288e+08 0.076507057 0.034120345 113.12107 24.956457 6689.5553 3.9369571e+08 0.074095578 0.033516197 113.17012 24.844744 6691.7115 3.7982651e+08 0.073092771 0.032833401 113.22088 24.734753 6693.8677 3.6622089e+08 0.072102251 0.031306418 113.27068 24.623786 6696.0239 3.5326304e+08 0.071907498 0.029685716 113.31722 24.509547 6698.1801 3.3900966e+08 0.071000933 0.030465043 113.36377 24.395308 6700.3363 3.2421659e+08 0.069305487 0.030917180 113.41030 24.284748 6702.4925 3.1110568e+08 0.068134164 0.033270024 113.45684 24.174757 6704.6488 2.9817055e+08 0.068346664 0.036496124 113.50337 24.062641 6706.8050 2.8960156e+08 0.067926673 0.039847378 113.54990 23.948419 6708.9612 2.7699406e+08 0.067281801 0.041090264 113.59643 23.834782 6711.1174 2.6646167e+08 0.065431797 0.040825786 113.64297 23.724790 6713.2736 2.5827096e+08 0.063221165 0.044676173 113.68951 23.614797 6715.4298 2.5051692e+08 0.061113850 0.047818187 113.73932 23.504805 6717.5860 2.4398182e+08 0.058835863 0.049838020 113.79008 23.394814 6719.7422 2.3456104e+08 0.057118576 0.050664661 113.84184 23.276381 6721.8984 2.2556681e+08 0.057092672 0.050574606 113.89503 23.145839 6724.0547 2.1469208e+08 0.054858579 0.049470215 113.94449 23.022334 6726.2109 2.0538094e+08 0.051020329 0.040953269 113.98679 22.912342 6728.3671 1.9744637e+08 0.050333689 0.040148379 114.02909 22.802351 6730.5233 1.9302605e+08 0.048679743 0.041096406 114.07554 22.688220 6732.6795 1.8653736e+08 0.047208413 0.043865304 114.12207 22.573998 6734.8357 1.7797044e+08 0.046960543 0.049303317 114.16861 22.462377 6736.9919 1.7269821e+08 0.048496562 0.054105068 114.21515 22.352385 6739.1481 1.6424524e+08 0.048998098 0.063007854 114.26168 22.242392 6741.3044 1.5887961e+08 0.047404712 0.066626737 114.30822 22.132401 6743.4606 1.5461250e+08 0.043118913 0.074154432 114.35475 22.022409 6745.6168 1.4620494e+08 0.040768878 0.078826177 114.40289 21.898475 6747.7730 1.4218589e+08 0.036312417 0.067095049 114.45124 21.772767 6749.9292 1.3778095e+08 0.033697574 0.072023515 114.49811 21.656451 6752.0854 1.3108130e+08 0.030565201 0.074035631 114.54465 21.542212 6754.2416 1.2767570e+08 0.029164955 0.075824898 114.58927 21.429907 6756.3978 1.2240591e+08 0.026344442 0.075190618 114.63157 21.319915 6758.5541 1.1835620e+08 0.026223019 0.074876946 114.67487 21.208484 6760.7103 1.1553886e+08 0.026443858 0.077415719 114.72805 21.082776 6762.8665 1.1363412e+08 0.031212908 0.076653142 114.78099 20.957434 6765.0227 1.0725083e+08 0.033463467 0.079535335 114.82329 20.847443 6767.1789 1.0268882e+08 0.032742793 0.081775439 114.86559 20.737452 6769.3351 1.0132272e+08 0.027783559 0.085267066 114.91507 20.617096 6771.4913 95339370. 0.023610580 0.090496829 114.96826 20.491389 6773.6475 94347484. 0.019621573 0.095726591 115.01501 20.374973 6775.8038 90212218. 0.015545873 0.10095635 115.05731 20.264981 6777.9600 84112092. 0.011388635 0.10618612 115.10099 20.151416 6780.1162 81099045. 0.0073483239 0.11141588 115.14934 20.025707 6782.2724 76709256. 0.0032094764 0.11664564 115.19673 19.902500 6784.4286 74804609. -0.00081742523 0.12187540 115.23904 19.792508 6786.5848 75937115. -0.0046804701 0.12710517 115.28134 19.682516 6788.7410 73929449. -0.0087803820 0.13233493 115.32845 19.560026 6790.8972 69844648. -0.013103829 0.13756469 115.37680 19.434319 6793.0535 65518168. -0.017595116 0.14279445 115.42075 19.320037 6795.2097 60320613. -0.022412861 0.14802422 115.46306 19.210045 6797.3659 57980114. -0.027225052 0.15325398 115.50756 19.094346 6799.5221 56451279. -0.032355052 0.15848374 115.55590 18.968638 6801.6783 52549751. -0.038733117 0.16371351 115.60425 18.842931 6803.8345 50924397. -0.046208855 0.16894327 115.65261 18.717223 6805.9907 49353507. -0.058318422 0.17417303 115.69959 18.595077 6808.1469 50530532. -0.10557359 0.17940279 115.74189 18.485086 6810.3031 51404320. -0.071387498 0.18463256 115.78420 18.375094 6812.4594 48105835. 0.0033768653 0.18986232 115.83171 18.251543