# # 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 = 54.095409 km # Date (UTC) = 2015-01-28T09:55:45.352 # Date (julian) = 2457050.91371935 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6490.0077 6.8411979e+10 0.023986576 0.029270044 101.19420 50.963430 6492.1977 6.1727379e+10 0.030580235 0.029930447 101.35673 50.770945 6494.3877 5.6789395e+10 0.036773199 0.030590849 101.51486 50.578431 6496.5778 5.1391852e+10 0.042721298 0.031251251 101.67300 50.385914 6498.7678 4.6586925e+10 0.048248213 0.031911653 101.82803 50.193419 6500.9579 4.2368871e+10 0.053409936 0.032572056 101.97926 50.000951 6503.1479 3.8495695e+10 0.058358931 0.033232458 102.13051 49.808437 6505.3380 3.4903079e+10 0.063306913 0.033892860 102.28177 49.615921 6507.5280 3.2066239e+10 0.068755918 0.034553262 102.43086 49.425676 6509.7181 2.9920140e+10 0.075214901 0.035213665 102.55691 49.259526 6511.9081 2.8164274e+10 0.083038447 0.035874067 102.68920 49.084405 6514.0981 2.6375276e+10 0.092255153 0.036534469 102.83355 48.891935 6516.2882 2.4231766e+10 0.10262475 0.037194871 102.97793 48.699425 6518.4782 2.2262744e+10 0.11474059 0.037855273 103.10946 48.520761 6520.6683 2.0660101e+10 0.12892607 0.038515676 103.22405 48.360339 6522.8583 1.9309861e+10 0.14255827 0.039142015 103.35908 48.173176 6525.0484 1.7874390e+10 0.15399836 0.039776694 103.50187 47.975389 6527.2384 1.6350752e+10 0.16384396 0.040889565 103.63934 47.782921 6529.4285 1.5074382e+10 0.17176517 0.042918290 103.75904 47.615351 6531.6185 1.3961526e+10 0.17728881 0.046128926 103.87435 47.453911 6533.8086 1.2972302e+10 0.17924613 0.047863198 104.01186 47.261397 6535.9986 1.1976076e+10 0.17752594 0.047791109 104.13283 47.084099 6538.1886 1.1089149e+10 0.17765755 0.049248540 104.24169 46.917946 6540.3787 1.0473585e+10 0.17657368 0.051033004 104.35053 46.756586 6542.5687 9.8891424e+09 0.17428283 0.051218161 104.46124 46.593431 6544.7588 9.2621824e+09 0.17262036 0.052259884 104.59188 46.400917 6546.9488 8.6223585e+09 0.17077998 0.053245255 104.70876 46.225053 6549.1389 8.0014439e+09 0.16867429 0.054107798 104.81762 46.058901 6551.3289 7.4520881e+09 0.16729138 0.055351205 104.93968 45.869383 6553.5190 6.9405847e+09 0.16575456 0.055074194 105.05454 45.690725 6555.7090 6.4731355e+09 0.16382065 0.054257632 105.15766 45.530302 6557.8990 6.1276956e+09 0.16198760 0.053302581 105.26078 45.365969 6560.0891 5.8049485e+09 0.15956474 0.052193980 105.36389 45.199850 6562.2791 5.4595808e+09 0.15677920 0.050614293 105.48642 45.008901 6564.4692 5.1029217e+09 0.15405911 0.048558964 105.59736 44.831992 6566.6592 4.7667968e+09 0.15184144 0.046809961 105.69476 44.671569 6568.8493 4.5024280e+09 0.14948898 0.044990978 105.79641 44.506901 6571.0393 4.2696889e+09 0.14740312 0.044492537 105.89952 44.340761 6573.2294 4.0573635e+09 0.14489039 0.043473424 105.99696 44.180300 6575.4194 3.8619022e+09 0.14175379 0.041953910 106.09436 44.019886 6577.6095 3.6807135e+09 0.13847949 0.039263070 106.19173 43.859493 6579.7995 3.4851341e+09 0.13546403 0.036630978 106.29549 43.679431 6581.9895 3.2733936e+09 0.13320221 0.035296962 106.40487 43.481989 6584.1796 3.0624059e+09 0.13142764 0.034417683 106.50226 43.321565 6586.3696 2.8829264e+09 0.12981360 0.033166518 106.59792 43.159396 6588.5597 2.7429089e+09 0.12836621 0.033193025 106.68959 42.993242 6590.7497 2.6210325e+09 0.12614592 0.029667466 106.78126 42.830294 6592.9398 2.5112618e+09 0.12410557 0.027160725 106.87293 42.669872 6595.1298 2.4028981e+09 0.12174911 0.025637033 106.96459 42.509476 6597.3199 2.2997965e+09 0.11931703 0.025621793 107.05624 42.348694 6599.5099 2.1947021e+09 0.11798939 0.024960398 107.14791 42.182540 6601.6999 2.0920028e+09 0.11773024 0.027375325 107.23958 42.018236 6603.8900 2.0011600e+09 0.11623128 0.026136401 107.33125 41.857814 6606.0800 1.9154183e+09 0.11574537 0.027360140 107.41961 41.697391 6608.2701 1.8385659e+09 0.11316970 0.023725231 107.50555 41.536967 6610.4601 1.7581721e+09 0.10998671 0.024442619 107.59149 41.371778 6612.6502 1.6716139e+09 0.10820147 0.023834969 107.67743 41.206123 6614.8402 1.5982490e+09 0.10686250 0.023361616 107.76337 41.045699 6617.0303 1.5277647e+09 0.10521857 0.023449282 107.84931 40.885286 6619.2203 1.4705921e+09 0.10416301 0.024579071 107.93523 40.724896 6621.4104 1.4174045e+09 0.10282739 0.024953434 108.02117 40.561075 6623.6004 1.3568662e+09 0.10068583 0.024714263 108.10711 40.394921 6625.7904 1.3020334e+09 0.099073108 0.026340837 108.18818 40.233640 6627.9805 1.2419395e+09 0.097160855 0.025695557 108.26899 40.073218 6630.1705 1.1912880e+09 0.095737546 0.025928722 108.35493 39.912795 6632.3606 1.1423006e+09 0.094259833 0.026075581 108.43882 39.752373 6634.5506 1.0973787e+09 0.093027752 0.026367008 108.51903 39.591948 6636.7407 1.0510468e+09 0.091736904 0.026262122 108.59924 39.428009 6638.9307 1.0037859e+09 0.090820105 0.025631094 108.67945 39.261859 6641.1208 9.6228600e+08 0.091592782 0.025148710 108.75965 39.100708 6643.3108 9.1563818e+08 0.091180172 0.025239545 108.83985 38.940311 6645.5008 8.7365879e+08 0.090251953 0.025686312 108.92006 38.779889 6647.6909 8.2838866e+08 0.089311446 0.026801537 109.00027 38.617305 6649.8809 7.8599069e+08 0.088595629 0.026419362 109.08048 38.451152 6652.0710 7.5945352e+08 0.087971083 0.027270050 109.15034 38.303106 6654.2610 7.3479199e+08 0.087081444 0.027925027 109.21418 38.165605 6656.4511 7.1589881e+08 0.085047346 0.028419319 109.28777 38.014452 6658.6411 6.9269166e+08 0.083342403 0.031198109 109.36798 37.854030 6660.8312 6.6390351e+08 0.081841817 0.032381482 109.44333 37.693606 6663.0212 6.3795133e+08 0.080478611 0.032477336 109.51781 37.533182 6665.2112 6.1109390e+08 0.079730133 0.028200991 109.59229 37.372759 6667.4013 5.8083815e+08 0.079097403 0.027250860 109.66677 37.210288 6669.5913 5.5263101e+08 0.078059467 0.027748356 109.74123 37.044169 6671.7814 5.2634298e+08 0.077771728 0.026876484 109.81571 36.881546 6673.9714 5.0772121e+08 0.076784611 0.028912061 109.89019 36.721124 6676.1615 4.8971795e+08 0.074381205 0.031817793 109.96467 36.560700 6678.3515 4.6806253e+08 0.073466323 0.030701503 110.03724 36.403094 6680.5416 4.4954748e+08 0.074106178 0.029558363 110.09617 36.265593 6682.7316 4.2735659e+08 0.074954743 0.030983520 110.15645 36.126108 6684.9217 4.1067355e+08 0.074992805 0.032700862 110.23093 35.965686 6687.1117 3.9514341e+08 0.073368671 0.034280604 110.30346 35.805263 6689.3017 3.8293467e+08 0.070788867 0.033744406 110.37221 35.644840 6691.4918 3.6930683e+08 0.069919201 0.032885233 110.44096 35.481003 6693.6818 3.5373780e+08 0.069088929 0.031370178 110.50971 35.314850 6695.8719 3.3805164e+08 0.068979500 0.029699320 110.58333 35.153596 6698.0619 3.2398140e+08 0.068299069 0.030302814 110.65617 34.995601 6700.2520 3.1623274e+08 0.066668907 0.030854610 110.71510 34.858100 6702.4420 3.0646698e+08 0.065547640 0.033229680 110.77470 34.719033 6704.6321 2.9743144e+08 0.065942521 0.036487927 110.84345 34.558611 6706.8221 2.8253471e+08 0.065898001 0.039877211 110.91035 34.398188 6709.0121 2.6946278e+08 0.065543748 0.041124816 110.97338 34.237764 6711.2022 2.5767820e+08 0.064006387 0.040922273 111.03971 34.077340 6713.3922 2.4973165e+08 0.062111236 0.045105264 111.10847 33.916917 6715.5823 2.3985871e+08 0.060479276 0.047974130 111.17722 33.756494 6717.7723 2.2639047e+08 0.058777058 0.049826496 111.24547 33.596072 6719.9624 2.2006698e+08 0.057701426 0.050455515 111.30849 33.435650 6722.1524 2.1117977e+08 0.057992266 0.050416776 111.37012 33.283054 6724.3425 2.0582291e+08 0.055431956 0.047066879 111.42905 33.145551 6726.5325 1.9977792e+08 0.052598295 0.040956170 111.48923 33.001066 6728.7226 1.9015141e+08 0.052567298 0.040652193 111.55224 32.840676 6730.9126 1.8445934e+08 0.051159334 0.041630185 111.61525 32.680268 6733.1026 1.7859932e+08 0.050199293 0.044481580 111.67828 32.519846 6735.2927 1.7097042e+08 0.050864756 0.049604141 111.74130 32.359421 6737.4827 1.6730075e+08 0.052456905 0.055673320 111.80433 32.198996 6739.6728 1.6431362e+08 0.052568521 0.063649903 111.86735 32.038574 6741.8628 1.5778472e+08 0.050546817 0.068219510 111.93037 31.880003 6744.0529 1.5377411e+08 0.045519757 0.077834303 111.99339 31.725310 6746.2429 1.4738310e+08 0.043294464 0.076163157 112.05641 31.567305 6748.4330 1.3960124e+08 0.039881815 0.069294699 112.11944 31.406882 6750.6230 1.3554798e+08 0.036484368 0.073067932 112.17496 31.265540 6752.8130 1.3160012e+08 0.032982879 0.073193630 112.22898 31.128040 6755.0031 1.2812921e+08 0.030405269 0.074603990 112.28560 30.972315 6757.1931 1.2705073e+08 0.026950466 0.076153939 112.34317 30.811922 6759.3832 1.1832399e+08 0.026963751 0.075912422 112.40619 30.651499 6761.5732 1.0978603e+08 0.028051128 0.078015585 112.46747 30.491077 6763.7633 1.0433567e+08 0.030903985 0.078762323 112.52477 30.330654 6765.9533 98661628. 0.031447745 0.079705225 112.58527 30.173437 6768.1434 94813146. 0.026951361 0.081371872 112.64829 30.018743 6770.3334 86598125. 0.020628018 0.087688356 112.70665 29.859385 6772.5235 82519564. 0.015068082 0.093000178 112.76394 29.698962 6774.7135 77159578. 0.0092484171 0.098312000 112.82124 29.538540 6776.9035 75248262. 0.0037320983 0.10362382 112.87853 29.378127 6779.0936 70383331. -0.0025884392 0.10893564 112.93581 29.217735 6781.2836 62892246. -0.010482105 0.11424747 112.99310 29.060635 6783.4737 63213566. -0.017743268 0.11955929 113.05039 28.905941 6785.6637 63274472. -0.029402688 0.12487111 113.10769 28.746480 6787.8538 64975254. -0.079497462 0.13018293 113.16498 28.586058 6790.0438 61216976. -0.042051682 0.13549475 113.22228 28.425634 6792.2339 51629168. 0.054151514 0.14080657 113.27957 28.267168