# # 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 = 58.926273 km # Date (UTC) = 2012-01-04T07:34:01.059 # Date (julian) = 2455930.81529003 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6521.8207 4.6897572e+10 0.15942268 0.038863191 139.03601 38.138100 6524.6593 4.1327421e+10 0.16608967 0.039661190 139.12769 37.996475 6527.4979 3.6326166e+10 0.17024368 0.041077978 139.22236 37.851674 6530.3365 3.1994111e+10 0.17292996 0.044299849 139.30737 37.717115 6533.1751 2.8344776e+10 0.17447460 0.047594020 139.39152 37.583454 6536.0138 2.5284686e+10 0.17270937 0.047802807 139.48516 37.434745 6538.8524 2.2507838e+10 0.17267343 0.049571735 139.57928 37.284933 6541.6910 1.9937636e+10 0.17113630 0.051102455 139.66838 37.140132 6544.5296 1.7764140e+10 0.16937291 0.052073947 139.75596 36.998768 6547.3682 1.5989393e+10 0.16781664 0.053427376 139.84011 36.865107 6550.2068 1.4469922e+10 0.16643955 0.055037136 139.92570 36.726626 6553.0454 1.3120754e+10 0.16478604 0.055312250 140.01481 36.576254 6555.8840 1.1898317e+10 0.16232794 0.054110597 140.09904 36.436560 6558.7226 1.0840902e+10 0.15989219 0.052623559 140.17825 36.307850 6561.5612 9.9410446e+09 0.15653629 0.051096130 140.26214 36.168898 6564.3998 9.1088262e+09 0.15273216 0.048590402 140.35125 36.018527 6567.2384 8.2618437e+09 0.14939948 0.046415597 140.43659 35.868140 6570.0770 7.4777488e+09 0.14586028 0.044885602 140.52014 35.717747 6572.9156 6.8458537e+09 0.14168666 0.043705797 140.59986 35.586477 6575.7542 6.3284969e+09 0.13736730 0.041617970 140.67907 35.457766 6578.5928 5.8671031e+09 0.13358791 0.037713444 140.76681 35.310384 6581.4315 5.4203546e+09 0.13085746 0.035465960 140.85494 35.161451 6584.2701 5.0073364e+09 0.12863423 0.034368401 140.92919 35.032742 6587.1087 4.6402444e+09 0.12666066 0.033182445 141.00387 34.903028 6589.9473 4.3011903e+09 0.12453009 0.031166682 141.08741 34.752656 6592.7859 3.9594149e+09 0.12179216 0.027310202 141.17095 34.603682 6595.6245 3.6336080e+09 0.11884393 0.025688332 141.25449 34.458882 6598.4631 3.3658069e+09 0.11644716 0.025186071 141.33381 34.319144 6601.3017 3.1395594e+09 0.11611285 0.027187770 141.40807 34.185465 6604.1403 2.9305386e+09 0.11461312 0.026154581 141.48638 34.046942 6606.9789 2.7352797e+09 0.11368995 0.025744902 141.56992 33.902139 6609.8175 2.5580537e+09 0.10989441 0.023948771 141.64436 33.764468 6612.6561 2.4085585e+09 0.10713853 0.023830526 141.71366 33.630808 6615.4947 2.2710132e+09 0.10524574 0.023266753 141.79179 33.490241 6618.3333 2.1315491e+09 0.10385138 0.024022499 141.87532 33.345439 6621.1719 1.9834690e+09 0.10250354 0.025032458 141.95427 33.200637 6624.0105 1.8454953e+09 0.099936399 0.024867953 142.03199 33.056156 6626.8491 1.7309018e+09 0.097456819 0.025509011 142.10131 32.922478 6629.6878 1.6317215e+09 0.095368445 0.025984757 142.17075 32.788699 6632.5264 1.5398794e+09 0.092630783 0.026095460 142.25429 32.643896 6635.3650 1.4481847e+09 0.090195555 0.026454520 142.33665 32.497905 6638.2036 1.3512743e+09 0.088386421 0.025662773 142.41462 32.347534 6641.0422 1.2640005e+09 0.088646678 0.025148444 142.48690 32.206215 6643.8808 1.1948901e+09 0.087978716 0.025325606 142.55125 32.077505 6646.7194 1.1322786e+09 0.086997735 0.026292527 142.62102 31.942393 6649.5580 1.0750860e+09 0.086026958 0.026864518 142.69899 31.797591 6652.3966 1.0109703e+09 0.085765039 0.027359642 142.77695 31.652789 6655.2352 9.4784635e+08 0.084607740 0.027707405 142.85492 31.507988 6658.0738 8.9347031e+08 0.082662196 0.030191989 142.92191 31.372174 6660.9124 8.5067852e+08 0.080777444 0.032455343 142.98627 31.238513 6663.7510 8.1235616e+08 0.079050512 0.032275085 143.06135 31.096071 6666.5896 7.7023184e+08 0.078879590 0.027023492 143.13932 30.951248 6669.4282 7.2586445e+08 0.077724003 0.027915872 143.21178 30.806446 6672.2668 6.8061629e+08 0.077623144 0.027034267 143.28418 30.661644 6675.1055 6.4067480e+08 0.075934170 0.030000333 143.35658 30.516843 6677.9441 6.0684834e+08 0.073824857 0.031016144 143.42773 30.378482 6680.7827 5.7968868e+08 0.074128352 0.029610426 143.49704 30.249772 6683.6213 5.5346243e+08 0.074570373 0.032099056 143.56752 30.112825 6686.4599 5.2795748e+08 0.073338069 0.034028646 143.63993 29.962453 6689.2985 5.0071000e+08 0.069795163 0.033747344 143.70907 29.815338 6692.1371 4.7356734e+08 0.068401241 0.032606139 143.77590 29.670536 6694.9757 4.4869673e+08 0.067443757 0.029893542 143.84713 29.525735 6697.8143 4.2537679e+08 0.066477924 0.030194316 143.91953 29.380933 6700.6529 4.0411703e+08 0.064227703 0.031151996 143.99195 29.236111 6703.4915 3.8113044e+08 0.063744622 0.034905151 144.06436 29.091293 6706.3301 3.5960148e+08 0.063909726 0.039020946 144.13675 28.946492 6709.1687 3.4240614e+08 0.063318353 0.041025227 144.20392 28.808170 6712.0073 3.2755697e+08 0.060970085 0.041843566 144.26333 28.679458 6714.8459 3.1483618e+08 0.058572787 0.047367006 144.32771 28.544590 6717.6845 3.0182141e+08 0.056086334 0.049831926 144.40010 28.399789 6720.5231 2.8795916e+08 0.054993385 0.050359151 144.46923 28.254987 6723.3618 2.7369680e+08 0.053895273 0.049570700 144.53607 28.110185 6726.2004 2.5954573e+08 0.049383293 0.040953174 144.60290 27.965384 6729.0390 2.4515917e+08 0.048675250 0.041019456 144.66973 27.820582 6731.8776 2.3258224e+08 0.046411471 0.043496553 144.73656 27.675780 6734.7162 2.2329517e+08 0.045956479 0.049310509 144.80339 27.530977 6737.5548 2.1426260e+08 0.048090628 0.055902841 144.87023 27.386176 6740.3934 2.0690096e+08 0.047887693 0.064722400 144.93706 27.241366 6743.2320 1.9887727e+08 0.043552577 0.072612473 145.00390 27.096544 6746.0706 1.9135185e+08 0.040414221 0.078166459 145.07074 26.951734 6748.9092 1.8327575e+08 0.036583672 0.071800270 145.13756 26.806933 6751.7478 1.7307769e+08 0.031956791 0.074027851 145.21217 26.650471 6754.5864 1.6326844e+08 0.029832136 0.075270435 145.28624 26.494825 6757.4250 1.5323935e+08 0.027133690 0.075450217 145.35307 26.350022 6760.2636 1.4561964e+08 0.028157043 0.076564004 145.41741 26.205220 6763.1022 1.3945101e+08 0.033525940 0.076749131 145.47867 26.060418 6765.9408 1.3179332e+08 0.036399662 0.079702948 145.54356 25.915617 6768.7794 1.2609903e+08 0.031823829 0.083660669 145.61039 25.770815 6771.6181 1.1905885e+08 0.026685745 0.090804197 145.67245 25.626014 6774.4567 1.1282219e+08 0.021703385 0.097689065 145.73463 25.480343 6777.2953 1.0858012e+08 0.016711328 0.10457393 145.81102 25.321217 6780.1339 1.0463519e+08 0.011720878 0.11145880 145.88000 25.169104 6782.9725 1.0163098e+08 0.0067308629 0.11834367 145.94126 25.024301 6785.8111 97761331. 0.0017502898 0.12522854 146.00253 24.879500 6788.6497 91841972. -0.0032112944 0.13211340 146.06379 24.734698 6791.4883 89069329. -0.0081903194 0.13899827 146.13863 24.577026 6794.3269 87587053. -0.013173057 0.14588314 146.21006 24.422590 6797.1655 85862635. -0.018152260 0.15276801 146.27132 24.277789 6800.0041 83799175. -0.023127305 0.15965287 146.33259 24.132976 6802.8427 80360975. -0.028097532 0.16653774 146.39386 23.988154 6805.6813 79361454. -0.033078977 0.17342261 146.46157 23.832815 6808.5199 76577846. -0.038054097 0.18030748 146.53013 23.676074 6811.3585 72140590. -0.043026482 0.18719234 146.59140 23.531251 6814.1971 67184969. -0.048005539 0.19407721 146.65355 23.381137 6817.0358 62552350. -0.052996934 0.20096208 146.71719 23.222011 6819.8744 61783822. -0.058008707 0.20784695 146.78593 23.057801 6822.7130 59208326. -0.063042016 0.21473181 146.85395 22.898290 6825.5516 58172685. -0.068104099 0.22161668 146.91521 22.759058 6828.3902 55388869. -0.073234156 0.22850155 146.98026 22.608476 6831.2288 49155508. -0.078539854 0.23538642 147.05027 22.442984 6834.0674 47740008. -0.084453033 0.24227129 147.11481 22.282974 6836.9060 43733433. -0.095161320 0.24915615 147.18031 22.123848 6839.7446 43480046. -0.095725684 0.25604102 147.25033 21.964722 6842.5832 43511964. -0.090757486 0.26292589 147.31004 21.815895