# # 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 = 44.987819 km # Date (UTC) = 2016-12-04T10:18:01.956 # Date (julian) = 2457726.92918930 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6509.2736 6.0961980e+10 0.10043542 0.035079649 102.29555 25.470019 6511.1709 5.4626805e+10 0.10867023 0.035651776 102.34020 25.369579 6513.0682 4.8835304e+10 0.12601940 0.036223902 102.38322 25.276904 6514.9655 4.4115925e+10 0.13432390 0.036796028 102.42624 25.184257 6516.8628 4.0311559e+10 0.13829840 0.037368155 102.46925 25.091610 6518.7601 3.6868729e+10 0.15113075 0.037940281 102.50902 24.998963 6520.6574 3.3946751e+10 0.15697453 0.038512407 102.54872 24.906316 6522.5547 3.1196085e+10 0.16200424 0.039062518 102.58842 24.813669 6524.4521 2.8497908e+10 0.16340051 0.039587553 102.63290 24.709899 6526.3494 2.5733211e+10 0.17198410 0.040034342 102.67757 24.605671 6528.2467 2.3110316e+10 0.18383873 0.041638155 102.71997 24.505522 6530.1440 2.0866006e+10 0.18987594 0.044030232 102.75637 24.416184 6532.0413 1.9039619e+10 0.18800825 0.046718657 102.79277 24.326846 6533.9386 1.7478920e+10 0.18550060 0.047918447 102.83000 24.236671 6535.8359 1.6093029e+10 0.18573013 0.047861704 102.86971 24.144012 6537.7332 1.4880703e+10 0.18247458 0.049030880 102.90942 24.051353 6539.6305 1.3733215e+10 0.17626436 0.050406790 102.95027 23.956034 6541.5278 1.2587727e+10 0.17140186 0.051155378 102.99494 23.851805 6543.4251 1.1417924e+10 0.17700640 0.051493455 103.03961 23.747576 6545.3224 1.0357609e+10 0.18189299 0.052458455 103.08158 23.651441 6547.2197 9.4925918e+09 0.17784910 0.053370902 103.12129 23.562103 6549.1170 8.7844527e+09 0.17008827 0.054085487 103.16099 23.472765 6551.0143 8.1619983e+09 0.16802811 0.055240763 103.19897 23.381702 6552.9116 7.6110365e+09 0.16898354 0.055357323 103.23537 23.289055 6554.8089 7.1441593e+09 0.16231770 0.054849354 103.27177 23.196408 6556.7062 6.7089373e+09 0.15202421 0.053909304 103.31230 23.099839 6558.6035 6.2419199e+09 0.14959139 0.052725061 103.35697 22.999332 6560.5008 5.7553746e+09 0.15447109 0.051822785 103.40164 22.898825 6562.3981 5.3052334e+09 0.15742681 0.050501107 103.43959 22.804696 6564.2954 4.9314192e+09 0.15254577 0.048637726 103.47598 22.712038 6566.1927 4.6202591e+09 0.14644518 0.047073878 103.51238 22.619379 6568.0900 4.3408581e+09 0.14614236 0.045688935 103.54878 22.529347 6569.9873 4.0995303e+09 0.14345619 0.044916682 103.58518 22.440009 6571.8846 3.8854458e+09 0.13742454 0.044261674 103.62158 22.350671 6573.7819 3.6802017e+09 0.12906968 0.043030025 103.66147 22.249887 6575.6792 3.4551920e+09 0.12755823 0.041693254 103.70242 22.145657 6577.5765 3.2205213e+09 0.13195725 0.039314823 103.74326 22.042652 6579.4738 3.0108961e+09 0.13107074 0.036810025 103.78297 21.953315 6581.3711 2.8286856e+09 0.12835718 0.035484232 103.82268 21.863978 6583.2684 2.6799645e+09 0.12184447 0.034885809 103.86218 21.774640 6585.1657 2.5443180e+09 0.11735361 0.033838290 103.89859 21.685290 6587.0630 2.4103695e+09 0.11541180 0.033172331 103.93499 21.595940 6588.9603 2.2836358e+09 0.10983964 0.033059230 103.97156 21.506022 6590.8576 2.1490991e+09 0.10813657 0.029466763 104.01251 21.401792 6592.7549 2.0112520e+09 0.11197926 0.027340268 104.05346 21.297563 6594.6522 1.8892103e+09 0.11287317 0.025814485 104.09281 21.198572 6596.5495 1.7838879e+09 0.10974255 0.025724775 104.12920 21.109234 6598.4468 1.6938067e+09 0.10595111 0.025193835 104.16560 21.019896 6600.3441 1.6160072e+09 0.10350796 0.025697338 104.20091 20.930558 6602.2414 1.5391264e+09 0.10527535 0.027310607 104.23399 20.841221 6604.1387 1.4699075e+09 0.10146080 0.026153651 104.26708 20.751883 6606.0360 1.4033717e+09 0.091923895 0.027439212 104.30258 20.659114 6607.9333 1.3171814e+09 0.096243083 0.023864009 104.34353 20.558607 6609.8306 1.2321937e+09 0.10304449 0.023952670 104.38448 20.458099 6611.7279 1.1602553e+09 0.10115671 0.024494246 104.42260 20.364520 6613.6252 1.0960268e+09 0.10411382 0.023802993 104.45901 20.275170 6615.5225 1.0557951e+09 0.091351024 0.023267609 104.49541 20.185821 6617.4198 1.0109942e+09 0.093626781 0.023578448 104.53181 20.094496 6619.3171 9.6835276e+08 0.092788229 0.024602437 104.56820 20.001850 6621.2144 9.3077134e+08 0.083390002 0.025018366 104.60460 19.909204 6623.1118 8.8113419e+08 0.090294276 0.024533228 104.64148 19.812023 6625.0091 8.3643727e+08 0.084352046 0.025408407 104.67870 19.711516 6626.9064 7.8632143e+08 0.094006392 0.025436123 104.71592 19.611009 6628.8037 7.4805755e+08 0.091988373 0.026029388 104.75241 19.520448 6630.7010 7.1641145e+08 0.087122596 0.025930029 104.78881 19.431110 6632.5983 6.8755307e+08 0.083332094 0.026104082 104.82521 19.341772 6634.4956 6.6077766e+08 0.075028228 0.026362991 104.86232 19.242737 6636.3929 6.2540313e+08 0.082709671 0.026397187 104.89955 19.142230 6638.2902 5.9326999e+08 0.079343879 0.025659001 104.93662 19.043752 6640.1875 5.5950401e+08 0.087123493 0.025247715 104.97302 18.954402 6642.0848 5.3208705e+08 0.091811997 0.025155165 105.00942 18.865053 6643.9821 5.1352900e+08 0.080518447 0.025340899 105.04596 18.773918 6645.8794 4.9286032e+08 0.076187278 0.025863639 105.08318 18.673411 6647.7767 4.7168895e+08 0.072128053 0.026846704 105.12041 18.572904 6649.6740 4.4596344e+08 0.078527831 0.026704642 105.15567 18.477687 6651.5713 4.1943342e+08 0.089117988 0.026921969 105.18876 18.388350 6653.4686 4.0157256e+08 0.089129253 0.027764903 105.22185 18.299012 6655.3659 3.9050322e+08 0.072255944 0.027761400 105.25848 18.206313 6657.2632 3.7484520e+08 0.062564300 0.029206399 105.29943 18.109528 6659.1605 3.5447737e+08 0.063172806 0.031801121 105.34038 18.012744 6661.0578 3.2943097e+08 0.085246417 0.032564383 105.37531 17.921656 6662.9551 3.0989439e+08 0.091349396 0.032508409 105.40840 17.832318 6664.8524 2.9934116e+08 0.083373658 0.029087215 105.44149 17.742979 6666.7497 2.9520179e+08 0.073662046 0.027054683 105.47765 17.645346 6668.6470 2.9148137e+08 0.057876771 0.028043321 105.51488 17.544840 6670.5443 2.8081592e+08 0.053888651 0.027076467 105.55210 17.444333 6672.4416 2.6462821e+08 0.055326828 0.027135560 105.58933 17.343811 6674.3389 2.4248727e+08 0.077076079 0.029240678 105.62656 17.243289 6676.2362 2.2289512e+08 0.10070152 0.031865957 105.66226 17.146910 6678.1335 2.1508274e+08 0.086497196 0.030847318 105.69534 17.057572 6680.0308 2.1163456e+08 0.073517330 0.029448069 105.72843 16.968234 6681.9281 2.0997813e+08 0.081660862 0.030369391 105.76296 16.876303 6683.8254 2.1335209e+08 0.047620402 0.032398233 105.80018 16.779519 6685.7227 2.0507491e+08 0.064373675 0.033468203 105.83741 16.682735 6687.6200 1.9803671e+08 0.063352674 0.033997110 105.87189 16.590878 6689.5173 1.8961035e+08 0.061538186 0.033550354 105.90498 16.501540 6691.4146 1.7650626e+08 0.080307077 0.032903440 105.93807 16.412202 6693.3119 1.7032458e+08 0.049084439 0.031497080 105.97381 16.315721 6695.2092 1.5888086e+08 0.062232408 0.029821042 106.01103 16.215215 6697.1065 1.4605852e+08 0.062116192 0.030104746 106.04826 16.114709 6699.0038 1.3354887e+08 0.073100668 0.031586899 106.08548 16.017750 6700.9011 1.2308898e+08 0.10381326 0.031336112 106.12271 15.920966 6702.7984 1.1957944e+08 0.088789945 0.033514282 106.15894 15.823189 6704.6957 1.1966587e+08 0.066410204 0.036519196 106.19244 15.722682 6706.5930 1.2097528e+08 0.045706280 0.039478538 106.22594 15.622175 6708.4903 1.1851020e+08 0.055833839 0.040577539 106.25920 15.530064 6710.3876 1.1416922e+08 0.072510303 0.040572371 106.29230 15.444023 6712.2849 1.1203731e+08 0.080201018 0.042359002 106.32539 15.357982 6714.1822 1.1296256e+08 0.053653999 0.047317110 106.36079 15.263861 6716.0795 1.1178394e+08 0.054324549 0.048518524 106.39802 15.163355 6717.9768 1.1143362e+08 0.039898670 0.049813846 106.43524 15.062848 6719.8742 1.0760381e+08 0.058251372 0.050539333 106.46922 14.965588 6721.7715 1.0395131e+08 0.081498061 0.050536341 106.50272 14.868804 6723.6688 1.0527578e+08 0.017087015 0.049741920 106.53691 14.771328 6725.5661 98285581. 0.044175839 0.041222432 106.57414 14.670822 6727.4634 92850821. 0.045198435 0.040343061 106.61136 14.570316 6729.3607 86120399. 0.034176300 0.040805038 106.64673 14.471668 6731.2580 75364341. 0.057353513 0.042263417 106.68023 14.374884 6733.1553 68364273. 0.064742651 0.044767278 106.71374 14.278099 6735.0526 62528703. 0.073722206 0.049349235 106.75026 14.178288 6736.9499 56610756. 0.11384378 0.053946037 106.78749 14.077781 6738.8472 58131949. -0.0086893128 0.061985150 106.82424 13.977745 6740.7445 51972219. 0.060851583 0.065322164 106.85775 13.880961 6742.6418 46985190. 0.091463588 0.070174553 106.89125 13.784176 6744.5391 44706937. 0.052844966 0.078210373 106.92639 13.687386 6746.4364 40466887. 0.16034245 0.073913903 106.96362 13.590588 6748.3337 44956250. -0.030223186 0.068772398 107.00085 13.493789 6750.2310 40923639. 0.058373591 0.072398542 107.03527 13.397002 6752.1283 39225489. 0.045852514 0.073986029 107.06877 13.300217 6754.0256 37074204. 0.072058721 0.076172327 107.10227 13.203180 6755.9229 34372166. 0.10908650 0.074200718 107.13578 13.102673 6757.8202 36009816. 0.053821173 0.074251001 107.16928 13.002166 6759.7175 37591022. 0.045427926 0.075993097 107.20420 12.903079 6761.6148 37712224. 0.019495124 0.078019019 107.24143 12.806295 6763.5121 36564468. 0.080904919 0.077997360 107.27865 12.709511 6765.4094 39273193. 0.14068355 0.079605930 107.31329 12.612727 6767.3067 44339020. 0.11097974 0.081632343 107.34679 12.515943 6769.2040 48481524. -0.0024674654 0.084949052 107.38029 12.419158