# # 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 = 50.397318 km # Date (UTC) = 2016-01-29T09:23:00.177 # Date (julian) = 2457416.89097428 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6502.6851 7.2574827e+10 0.057558973 0.033092897 110.40057 50.081088 6504.3701 6.7324049e+10 0.065475217 0.033601006 110.51692 49.933004 6506.0551 6.1642445e+10 0.073467006 0.034109114 110.63328 49.784907 6507.7401 5.5972630e+10 0.081556411 0.034617223 110.74966 49.636788 6509.4251 5.1097848e+10 0.089923211 0.035125331 110.86605 49.486121 6511.1101 4.6453095e+10 0.098459969 0.035633440 110.98243 49.332711 6512.7951 4.2380847e+10 0.10727062 0.036141549 111.09566 49.182450 6514.4801 3.8638899e+10 0.11626996 0.036649657 111.20672 49.034366 6516.1651 3.5208807e+10 0.12543870 0.037157766 111.31781 48.886256 6517.8501 3.2111434e+10 0.13478862 0.037665875 111.42890 48.738134 6519.5352 2.9577493e+10 0.14444178 0.038173983 111.52142 48.610016 6521.2202 2.7659024e+10 0.15442640 0.038682092 111.60958 48.486589 6522.9052 2.6042529e+10 0.16208411 0.039154279 111.70729 48.346925 6524.5902 2.4420056e+10 0.16779209 0.039636620 111.81309 48.193515 6526.2752 2.2601049e+10 0.17140748 0.039956573 111.91888 48.043573 6527.9602 2.0830691e+10 0.17595087 0.041413571 112.02465 47.895489 6529.6452 1.9372153e+10 0.17930626 0.043263501 112.11704 47.762800 6531.3302 1.8226136e+10 0.18109819 0.045709268 112.20520 47.634963 6533.0152 1.7165613e+10 0.18323154 0.047526042 112.30203 47.497151 6534.7002 1.6103363e+10 0.18337279 0.048140429 112.40783 47.349032 6536.3852 1.5037780e+10 0.18174835 0.048135149 112.50037 47.215763 6538.0702 1.4102972e+10 0.18146581 0.049190866 112.58413 47.092334 6539.7552 1.3272436e+10 0.18060461 0.050557788 112.67346 46.958936 6541.4402 1.2377645e+10 0.17830993 0.051183772 112.77394 46.805564 6543.1252 1.1487653e+10 0.17660419 0.051414757 112.86703 46.665430 6544.8102 1.0732532e+10 0.17519602 0.052301615 112.95078 46.542001 6546.4952 1.0081993e+10 0.17292974 0.052872017 113.03653 46.413367 6548.1802 9.4468614e+09 0.17142863 0.053721469 113.13175 46.259959 6549.8652 8.8375600e+09 0.17014578 0.054848023 113.22372 46.115042 6551.5502 8.3105630e+09 0.16812112 0.055428893 113.30748 45.991612 6553.2352 7.8512081e+09 0.16632908 0.055216813 113.39140 45.867742 6554.9202 7.3685990e+09 0.16461251 0.054851691 113.48662 45.714334 6556.6053 6.8567050e+09 0.16221810 0.053924142 113.57986 45.564656 6558.2903 6.4083790e+09 0.16002066 0.052991970 113.65920 45.441252 6559.9753 6.0766479e+09 0.15764203 0.052277101 113.73853 45.317847 6561.6603 5.7633069e+09 0.15448638 0.051047316 113.82692 45.173303 6563.3453 5.4173052e+09 0.15168430 0.049528969 113.91685 45.025184 6565.0303 5.0723648e+09 0.14938763 0.048284019 113.99657 44.896637 6566.7153 4.7646595e+09 0.14666895 0.046778253 114.07592 44.768800 6568.4003 4.5110588e+09 0.14417806 0.045403706 114.15219 44.644034 6570.0853 4.2876280e+09 0.14213686 0.044882180 114.22713 44.520606 6571.7703 4.0755872e+09 0.13984054 0.044292893 114.30207 44.395292 6573.4553 3.9110031e+09 0.13750797 0.043292116 114.37701 44.267455 6575.1403 3.7369269e+09 0.13578222 0.042233941 114.45434 44.136390 6576.8253 3.5515826e+09 0.13377377 0.040421448 114.54424 43.988306 6578.5103 3.3612340e+09 0.13160150 0.037843774 114.62895 43.845661 6580.1953 3.1740579e+09 0.12991850 0.036340254 114.69947 43.717824 6581.8803 3.0284878e+09 0.12801901 0.035330036 114.77003 43.590013 6583.5653 2.9015163e+09 0.12619047 0.034735525 114.84494 43.466561 6585.2503 2.7903413e+09 0.12451803 0.033770641 114.91989 43.343133 6586.9353 2.6873010e+09 0.12272076 0.033159205 114.99160 43.216480 6588.6203 2.5850257e+09 0.12097397 0.033172767 115.06213 43.088643 6590.3053 2.4962351e+09 0.11895072 0.030494084 115.13266 42.962847 6591.9903 2.4256755e+09 0.11657778 0.028084420 115.20319 42.839420 6593.6754 2.3450125e+09 0.11432030 0.026474349 115.27646 42.710167 6595.3604 2.2443198e+09 0.11203933 0.025660941 115.36108 42.556794 6597.0454 2.1214853e+09 0.10992145 0.025708413 115.44008 42.412514 6598.7304 2.0038752e+09 0.10819602 0.025058464 115.50620 42.289085 6600.4154 1.9160954e+09 0.10775837 0.025843797 115.57248 42.165655 6602.1004 1.8505324e+09 0.10678417 0.027430979 115.64301 42.042228 6603.7854 1.7864863e+09 0.10504973 0.026198332 115.71355 41.918800 6605.4704 1.7160214e+09 0.10434666 0.027059656 115.78069 41.791992 6607.1554 1.6457170e+09 0.10276577 0.025400165 115.84681 41.664156 6608.8404 1.5781106e+09 0.10008616 0.023710151 115.91294 41.538515 6610.5254 1.5191528e+09 0.097790490 0.024504982 115.97906 41.415088 6612.2104 1.4563855e+09 0.096465618 0.024163549 116.04518 41.290654 6613.8954 1.3895099e+09 0.095899174 0.023902116 116.11129 41.162842 6615.5804 1.3274168e+09 0.094980433 0.023269389 116.17740 41.035030 6617.2654 1.2724242e+09 0.094340468 0.023527246 116.24352 40.911430 6618.9504 1.2227204e+09 0.093868411 0.024488474 116.30964 40.788003 6620.6354 1.1732872e+09 0.093474196 0.024971962 116.37577 40.661523 6622.3204 1.1256274e+09 0.092553646 0.024672706 116.44189 40.533686 6624.0054 1.0863801e+09 0.091026261 0.024865217 116.50614 40.407717 6625.6904 1.0486847e+09 0.090336549 0.026221502 116.56786 40.284289 6627.3754 1.0101127e+09 0.088729155 0.025461837 116.62957 40.160862 6629.0604 9.7195961e+08 0.087864681 0.026098176 116.69129 40.037434 6630.7454 9.3133401e+08 0.086617470 0.025930139 116.75300 39.914007 6632.4305 8.9268750e+08 0.085526728 0.026083960 116.81862 39.786670 6634.1155 8.5834253e+08 0.084299848 0.026335265 116.88474 39.658834 6635.8005 8.2844780e+08 0.083119862 0.026519829 116.94814 39.533737 6637.4855 7.9737930e+08 0.082192625 0.025923645 117.00984 39.410334 6639.1705 7.6713217e+08 0.081382725 0.025567144 117.07154 39.285384 6640.8555 7.3670295e+08 0.081904009 0.025165983 117.13326 39.157546 6642.5405 7.1258353e+08 0.081576346 0.025173814 117.19462 39.030063 6644.2255 6.9102592e+08 0.080583577 0.025367976 117.25192 38.906634 6645.9105 6.6530888e+08 0.079816585 0.025878215 117.30923 38.783205 6647.5955 6.4091329e+08 0.079153697 0.026751310 117.37011 38.659777 6649.2805 6.1263004e+08 0.078474515 0.027247034 117.43182 38.536349 6650.9655 5.9100126e+08 0.078378379 0.026476268 117.49114 38.410526 6652.6505 5.6839317e+08 0.078294041 0.027429502 117.54845 38.282689 6654.3355 5.5181819e+08 0.077673070 0.027893294 117.60696 38.156065 6656.0205 5.3300632e+08 0.076372702 0.028041425 117.66868 38.032637 6657.7055 5.1438959e+08 0.075415300 0.029719493 117.73036 37.909210 6659.3905 4.9399325e+08 0.074357688 0.031753134 117.78766 37.785807 6661.0755 4.7023171e+08 0.073506203 0.032573419 117.84496 37.662404 6662.7605 4.5571496e+08 0.072749424 0.032617567 117.90226 37.535731 6664.4455 4.3522914e+08 0.072123471 0.030575880 117.95956 37.407893 6666.1305 4.2050204e+08 0.072287586 0.026934033 118.01303 37.290393 6667.8155 4.0726083e+08 0.071892481 0.027403022 118.06215 37.184601 6669.5006 3.9747667e+08 0.071257401 0.027841601 118.11127 37.078809 6671.1856 3.8971481e+08 0.071366598 0.026867993 118.16349 36.958515 6672.8706 3.7941939e+08 0.071231572 0.027384192 118.21639 36.835086 6674.5556 3.7113965e+08 0.070276585 0.029423447 118.27173 36.711658 6676.2406 3.5540727e+08 0.068645319 0.031868770 118.32904 36.588230 6677.9256 3.4729044e+08 0.068085876 0.031042417 118.38634 36.463545 6679.6106 3.3728187e+08 0.068152660 0.029763216 118.44365 36.335709 6681.2956 3.2383711e+08 0.069106049 0.029884125 118.50088 36.207945 6682.9806 3.1293113e+08 0.069851577 0.031173750 118.55378 36.084518 6684.6656 2.9775285e+08 0.070098984 0.032687868 118.60668 35.961090 6686.3506 2.8545321e+08 0.069654518 0.033965067 118.65957 35.837681 6688.0356 2.7774498e+08 0.068117714 0.033793408 118.71245 35.714277 6689.7206 2.7229873e+08 0.066756286 0.033367363 118.76534 35.590861 6691.4056 2.6060391e+08 0.066444216 0.032905565 118.81824 35.467431 6693.0906 2.5261131e+08 0.066271258 0.031573002 118.86955 35.347717 6694.7756 2.4052753e+08 0.066294280 0.030173955 118.91489 35.241925 6696.4606 2.3148795e+08 0.066486062 0.029867165 118.96023 35.136133 6698.1456 2.2735285e+08 0.066146915 0.030417709 119.00983 35.017909 6699.8306 2.2443965e+08 0.065213851 0.030823996 119.06273 34.890073 6701.5156 2.1818248e+08 0.064169882 0.032166032 119.11562 34.763538 6703.2006 2.1321959e+08 0.064599627 0.034177304 119.16852 34.640111 6704.8856 2.0314928e+08 0.065271029 0.036612452 119.22142 34.516683 6706.5707 1.9032000e+08 0.065690726 0.039439577 119.27432 34.393256 6708.2557 1.8129998e+08 0.065953641 0.040321977 119.32721 34.269828 6709.9407 1.7193523e+08 0.065607536 0.040534238 119.38011 34.146399 6711.6257 1.6549679e+08 0.064376559 0.041404067 119.43301 34.022969 6713.3107 1.6059982e+08 0.063144210 0.044810245 119.48375 33.899552 6714.9957 1.5443937e+08 0.062027024 0.047378263 119.53223 33.776149 6716.6807 1.4158017e+08 0.061240810 0.049403935 119.58071 33.652740 6718.3657 1.3502514e+08 0.059904651 0.050381936 119.62920 33.529313 6720.0507 1.2675655e+08 0.059810457 0.050413894 119.67769 33.405885 6721.7357 1.2411377e+08 0.059934217 0.050525566 119.72318 33.299251 6723.4207 1.2446487e+08 0.058347608 0.049603573 119.76852 33.193458 6725.1057 1.1978704e+08 0.054724436 0.041509995 119.81482 33.082275 6726.7907 1.1704130e+08 0.053223330 0.040958499 119.86331 32.958847 6728.4757 1.1632557e+08 0.052580782 0.040302335 119.91180 32.835420 6730.1607 1.1088676e+08 0.051224259 0.040599260 119.96029 32.711992 6731.8457 1.0749246e+08 0.049504747 0.043433159 120.00878 32.588565 6733.5307 1.0467017e+08 0.048211955 0.046805752 120.05727 32.465135 6735.2157 1.0033259e+08 0.048309882 0.049522442 120.10576 32.341705 6736.9007 1.0138055e+08 0.048672787 0.053760273 120.15425 32.218276 6738.5857 95706578. 0.048709230 0.060545835 120.20274 32.094848 6740.2707 95197936. 0.047252635 0.064512874 120.25122 31.971426 6741.9557 93462821. 0.044480761 0.068484531 120.29970 31.848023 6743.6407 91467067. 0.039732327 0.075369915 120.34818 31.724619 6745.3258 91862273. 0.036991115 0.078703830 120.39667 31.601192 6747.0108 82823738. 0.031253152 0.067357458 120.44516 31.477765 6748.6958 82040900. 0.030257497 0.070677329 120.49059 31.354337 6750.3808 78218729. 0.026201037 0.072654306 120.53467 31.230908 6752.0658 76666210. 0.022270687 0.074058367 120.57768 31.114984 6753.7508 78766425. 0.020488644 0.075406937 120.61924 31.009191 6755.4358 75261230. 0.017280585 0.074414284 120.66081 30.903399 6757.1208 76735544. 0.014411568 0.076373507 120.70433 30.783871 6758.8058 73624337. 0.013812287 0.075409270 120.74841 30.660442 6760.4908 69623637. 0.012413642 0.076997192 120.79474 30.537014 6762.1758 67639616. 0.014768060 0.077767268 120.84323 30.413585 6763.8608 66438716. 0.015730307 0.079059357 120.89066 30.290157 6765.5458 69830314. 0.016767239 0.079630832 120.93474 30.166730 6767.2308 71036226. 0.014649587 0.081717317 120.97882 30.043302 6768.9158 67357900. 0.0077695894 0.084151347 121.02290 29.919898 6770.6008 64983859. 0.00083602715 0.088336954 121.06697 29.796494 6772.2858 58463574. -0.010590586 0.092423831 121.11105 29.673073 6773.9708 57879173. -0.026020955 0.096510708 121.15513 29.549645 6775.6558 59528608. -0.097159686 0.10059758 121.19921 29.428137 6777.3408 52892985. -0.048563975 0.10468446 121.24329 29.309117 6779.0258 45458739. 0.097748945 0.10877134 121.28737 29.189360