# # 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 = 56.208669 km # Date (UTC) = 2015-12-26T10:36:59.063 # Date (julian) = 2457382.94235027 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6498.9121 7.3268893e+10 0.040523851 0.031955141 97.507821 29.146837 6501.5585 6.2596593e+10 0.050658157 0.032753168 97.569962 29.022217 6504.2049 5.4074523e+10 0.061039023 0.033551195 97.634584 28.897588 6506.8514 4.7250182e+10 0.071800168 0.034349223 97.699204 28.772964 6509.4978 4.1618003e+10 0.083018700 0.035147250 97.763818 28.648352 6512.1443 3.6933766e+10 0.094771720 0.035945277 97.827829 28.523138 6514.7907 3.2922644e+10 0.10710923 0.036743304 97.887826 28.393910 6517.4371 2.9590180e+10 0.12015843 0.037541331 97.947824 28.264682 6520.0836 2.6813054e+10 0.13395954 0.038339359 98.012270 28.139902 6522.7300 2.4437235e+10 0.14647532 0.039108415 98.076883 28.015289 6525.3765 2.2261730e+10 0.15395944 0.039739250 98.137826 27.890664 6528.0229 2.0276929e+10 0.16025725 0.041460650 98.197835 27.766035 6530.6693 1.8483976e+10 0.16533029 0.044765761 98.257837 27.641417 6533.3158 1.6868468e+10 0.17023695 0.047653785 98.317834 27.516805 6535.9622 1.5472180e+10 0.17172530 0.047806889 98.377833 27.392193 6538.6087 1.4210561e+10 0.17458205 0.049453068 98.437834 27.267580 6541.2551 1.2998666e+10 0.17496218 0.051243800 98.500063 27.138338 6543.9015 1.1778138e+10 0.17341435 0.051618508 98.567561 26.998146 6546.5480 1.0592041e+10 0.17110103 0.052915430 98.632274 26.863738 6549.1944 9.5335921e+09 0.16800459 0.054164416 98.692272 26.739126 6551.8409 8.6846201e+09 0.16547983 0.055530909 98.752271 26.614510 6554.4873 7.9785224e+09 0.16252064 0.054842606 98.812280 26.489881 6557.1337 7.3499497e+09 0.15979379 0.053782273 98.872288 26.365254 6559.7802 6.7755677e+09 0.15659231 0.052299120 98.932286 26.240641 6562.4266 6.2329552e+09 0.15318365 0.050473948 98.992283 26.116029 6565.0731 5.7596500e+09 0.15023379 0.048235423 99.048261 25.991416 6567.7195 5.3403361e+09 0.14767742 0.046008821 99.103645 25.866803 6570.3660 4.9668823e+09 0.14565987 0.044765919 99.162280 25.742191 6573.0124 4.6313429e+09 0.14337584 0.043647535 99.222278 25.617578 6575.6588 4.3123312e+09 0.14055908 0.041713689 99.279797 25.495440 6578.3053 4.0180689e+09 0.13750271 0.038167548 99.335189 25.375426 6580.9517 3.7482852e+09 0.13423735 0.035641229 99.392292 25.253705 6583.5982 3.4956603e+09 0.13164320 0.034718906 99.452290 25.129093 6586.2446 3.2661429e+09 0.12876523 0.033168134 99.511342 25.004481 6588.8910 3.0622044e+09 0.12609311 0.033082365 99.566727 24.879869 6591.5375 2.8737526e+09 0.12258391 0.028595426 99.622111 24.755256 6594.1839 2.7033325e+09 0.11898595 0.026071560 99.677492 24.630643 6596.8304 2.5408091e+09 0.11499351 0.025723498 99.732873 24.506031 6599.4768 2.3748072e+09 0.11223628 0.024958407 99.794299 24.372350 6602.1232 2.2073094e+09 0.11078967 0.027411462 99.856617 24.237331 6604.7697 2.0505269e+09 0.10858595 0.026528290 99.912378 24.112153 6607.4161 1.9116659e+09 0.10637596 0.024885303 99.967762 23.987541 6610.0626 1.7986948e+09 0.10267930 0.024062760 100.02314 23.862929 6612.7090 1.6981275e+09 0.10064142 0.023791008 100.07853 23.738317 6615.3554 1.6006410e+09 0.099557704 0.023262468 100.13391 23.616530 6618.0019 1.5144656e+09 0.098814950 0.023772223 100.18929 23.496533 6620.6483 1.4298258e+09 0.098199948 0.024976121 100.24468 23.374472 6623.2948 1.3543449e+09 0.096670042 0.024601034 100.30007 23.249843 6625.9412 1.2823011e+09 0.095303021 0.026520753 100.35417 23.126507 6628.5877 1.2148786e+09 0.093488554 0.025941688 100.40493 23.006510 6631.2341 1.1546017e+09 0.091621885 0.025954545 100.45700 22.884243 6633.8805 1.0869215e+09 0.090034864 0.026305985 100.51931 22.744051 6636.5270 1.0155242e+09 0.088491057 0.026345107 100.57947 22.607625 6639.1734 9.4844452e+08 0.087468465 0.025566092 100.63023 22.487629 6641.8199 8.8995021e+08 0.088099003 0.025151084 100.68109 22.367541 6644.4663 8.4814783e+08 0.086879391 0.025394003 100.73648 22.242928 6647.1127 8.1050247e+08 0.085407887 0.026497138 100.79186 22.118316 6649.7592 7.6881228e+08 0.084193611 0.026587195 100.84873 21.984826 6652.4056 7.2184341e+08 0.083509286 0.027362124 100.90585 21.849807 6655.0521 6.7048918e+08 0.082208860 0.027631728 100.96136 21.724439 6657.6985 6.2690645e+08 0.079963852 0.029711352 101.01674 21.599826 6660.3449 5.9172888e+08 0.077988705 0.031939535 101.06862 21.478724 6662.9914 5.6645953e+08 0.076167632 0.032488046 101.11938 21.358726 6665.6378 5.4154721e+08 0.075408624 0.027502031 101.17392 21.229819 6668.2843 5.1269940e+08 0.074610614 0.027722330 101.23104 21.094820 6670.9307 4.8171330e+08 0.074517274 0.026897451 101.28391 20.966760 6673.5771 4.5697613e+08 0.074127436 0.028322385 101.33468 20.842148 6676.2236 4.3298728e+08 0.071830129 0.031857826 101.38545 20.719842 6678.8700 4.1556285e+08 0.070834897 0.030354701 101.43623 20.599829 6681.5165 3.9634131e+08 0.072123176 0.030053587 101.48913 20.474798 6684.1629 3.7152256e+08 0.072667987 0.032662359 101.54624 20.339799 6686.8094 3.5357796e+08 0.071374698 0.034231978 101.60076 20.210934 6689.4558 3.3551253e+08 0.068461773 0.033605737 101.65153 20.090936 6692.1022 3.1901144e+08 0.067359999 0.032646610 101.70383 19.967305 6694.7487 3.0259954e+08 0.066626776 0.030211719 101.76095 19.832306 6697.3951 2.8716113e+08 0.066029108 0.030141268 101.81606 19.702052 6700.0416 2.7457558e+08 0.064257180 0.030698542 101.86683 19.582054 6702.6880 2.6502068e+08 0.062842456 0.033426099 101.91777 19.459038 6705.3344 2.5070950e+08 0.063037631 0.037263170 101.96969 19.318847 6707.9809 2.3604098e+08 0.062616493 0.040046317 102.02277 19.179812 6710.6273 2.1985930e+08 0.060915029 0.040619285 102.07990 19.044793 6713.2738 2.0796969e+08 0.058311404 0.044676760 102.13513 18.914249 6715.9202 2.0015493e+08 0.055816964 0.048319745 102.18590 18.794252 6718.5666 1.9115944e+08 0.052921133 0.050694918 102.23682 18.672287 6721.2131 1.8375526e+08 0.052653558 0.050368102 102.28874 18.537288 6723.8595 1.7126022e+08 0.050660314 0.049848316 102.34173 18.402289 6726.5060 1.5820230e+08 0.046359565 0.040955931 102.39884 18.267290 6729.1524 1.4995137e+08 0.045630081 0.040943845 102.45289 18.136481 6731.7988 1.4451691e+08 0.043420944 0.043339878 102.49905 18.016483 6734.4453 1.3921426e+08 0.042616591 0.049326808 102.54643 17.895381 6737.0917 1.3593570e+08 0.044614114 0.054427770 102.60355 17.765575 6739.7382 1.2876462e+08 0.044955825 0.063729931 102.65970 17.634795 6742.3846 1.2362456e+08 0.041980382 0.069547928 102.71163 17.499776 6745.0311 1.2259607e+08 0.037494312 0.078579940 102.76355 17.364762 6747.6775 1.1924213e+08 0.032982213 0.067127926 102.81547 17.229763 6750.3239 1.1397580e+08 0.030237612 0.072557261 102.86740 17.094764 6752.9704 1.0798002e+08 0.027215456 0.073011572 102.91932 16.959765 6755.6168 1.0251078e+08 0.024561795 0.074334911 102.97337 16.824766 6758.2633 97110217. 0.023387588 0.074262013 103.03048 16.689767 6760.9097 93726025. 0.023796571 0.077796021 103.08509 16.557278 6763.5561 86802938. 0.029439584 0.078131494 103.13701 16.427471 6766.2026 82282422. 0.031298559 0.080171984 103.18894 16.294771 6768.8490 80912993. 0.026448022 0.083910998 103.24086 16.159772 6771.4955 77783930. 0.021383660 0.090506850 103.29278 16.024773 6774.1419 75955633. 0.016492439 0.096925632 103.34470 15.889774 6776.7883 73037564. 0.011531443 0.10334442 103.39663 15.758437 6779.4348 67652412. 0.0063828413 0.10976320 103.44855 15.628630 6782.0812 65732757. 0.0014817318 0.11618198 103.50047 15.494776 6784.7277 63238047. -0.0034578358 0.12260076 103.55239 15.359777 6787.3741 62498013. -0.0082301568 0.12901955 103.60432 15.224761 6790.0205 61056807. -0.013082764 0.13543833 103.65626 15.089742 6792.6670 55573022. -0.018462216 0.14185711 103.70336 14.959559 6795.3134 52427246. -0.023694107 0.14827589 103.75010 14.829742 6797.9599 55018027. -0.028186061 0.15469468 103.80202 14.694743 6800.6063 55612902. -0.033047449 0.16111346 103.85451 14.558730 6803.2528 53057104. -0.038532865 0.16753224 103.91385 14.410375 6805.8992 50697116. -0.044298166 0.17395102 103.97029 14.267241 6808.5456 46667569. -0.050985220 0.18036981 104.02222 14.132242 6811.1921 47654737. -0.057140900 0.18678859 104.07173 13.999657 6813.8385 45644937. -0.066488330 0.19320737 104.11845 13.869851 6816.4850 40510633. -0.096879856 0.19962615 104.17198 13.726850 6819.1314 39745012. -0.084323948 0.20604494 104.23132 13.572563 6824.4243 39800491. -0.048134171 0.21888250 104.32663 13.309369