# # 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 = 62.478954 km # Date (UTC) = 2013-12-11T09:36:34.544 # Date (julian) = 2456637.90039981 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6496.0539 6.3821543e+10 0.035527089 0.031093263 111.08302 29.221421 6498.7460 5.8206120e+10 0.044330547 0.031905077 111.14406 29.094655 6501.4382 5.2808510e+10 0.053168195 0.032716890 111.21040 28.959204 6504.1303 4.7575738e+10 0.062124637 0.033528703 111.28435 28.811308 6506.8225 4.2570283e+10 0.071260907 0.034340516 111.35161 28.674346 6509.5147 3.8206867e+10 0.080803506 0.035152329 111.41265 28.547564 6512.2068 3.4574909e+10 0.091021438 0.035964142 111.47551 28.420789 6514.8990 3.1459117e+10 0.10204645 0.036775956 111.54124 28.294025 6517.5911 2.8587793e+10 0.11393723 0.037587769 111.60576 28.166048 6520.2833 2.5915671e+10 0.12670333 0.038399582 111.66680 28.034587 6522.9754 2.3507354e+10 0.13778135 0.039172684 111.72784 27.903729 6525.6676 2.1309279e+10 0.14412687 0.039706022 111.78887 27.776964 6528.3598 1.9338811e+10 0.15055331 0.041727886 111.84990 27.650198 6531.0519 1.7528196e+10 0.15560176 0.045304254 111.91095 27.523416 6533.7441 1.5897012e+10 0.16119811 0.047835799 111.97199 27.396634 6536.4362 1.4480183e+10 0.16442029 0.048180816 112.03303 27.269868 6539.1284 1.3216968e+10 0.16803832 0.049799051 112.09406 27.143103 6541.8206 1.2121260e+10 0.16980150 0.051060430 112.15510 27.016338 6544.5127 1.1177290e+10 0.16989659 0.052060271 112.21613 26.889573 6547.2049 1.0342992e+10 0.16873431 0.053365274 112.27431 26.759949 6549.8970 9.5878638e+09 0.16679699 0.054880426 112.33065 26.628488 6552.5892 8.8330291e+09 0.16439817 0.055438468 112.39290 26.491676 6555.2813 8.0789560e+09 0.16189039 0.054616966 112.46157 26.349042 6557.9735 7.3794884e+09 0.15935577 0.053255911 112.52577 26.215708 6560.6657 6.7884532e+09 0.15621773 0.051674128 112.58681 26.088943 6563.3578 6.3059650e+09 0.15339386 0.049514450 112.64570 25.962178 6566.0500 5.8883267e+09 0.15073453 0.047154611 112.70204 25.835412 6568.7421 5.5033285e+09 0.14909301 0.045089461 112.75838 25.708647 6571.4343 5.1492833e+09 0.14774837 0.044384660 112.81472 25.581882 6574.1265 4.8313808e+09 0.14556398 0.042794270 112.87198 25.455113 6576.8186 4.5314044e+09 0.14348438 0.040429153 112.93302 25.328331 6579.5108 4.2448174e+09 0.14069371 0.036789704 112.99375 25.201550 6582.2029 3.9761412e+09 0.13842575 0.035238572 113.05009 25.074786 6584.8951 3.7343968e+09 0.13622599 0.034027923 113.10644 24.948021 6587.5872 3.5122396e+09 0.13393935 0.033288480 113.16278 24.821256 6590.2794 3.3123079e+09 0.13119417 0.030542334 113.21912 24.694491 6592.9716 3.1360466e+09 0.12794367 0.027129843 113.27546 24.571513 6595.6637 2.9685764e+09 0.12416148 0.025692401 113.33179 24.449443 6598.3559 2.7973741e+09 0.12102235 0.025237257 113.39290 24.313468 6601.0480 2.6192796e+09 0.11975418 0.027068312 113.45629 24.170854 6603.7402 2.4510860e+09 0.11756560 0.026225081 113.51416 24.040648 6606.4324 2.3062993e+09 0.11637214 0.026727040 113.57050 23.913867 6609.1245 2.1888414e+09 0.11286825 0.023742917 113.62377 23.787096 6611.8167 2.0755767e+09 0.11016224 0.024437663 113.67542 23.660330 6614.5088 1.9689383e+09 0.10942105 0.023589931 113.72952 23.533565 6617.2010 1.8711003e+09 0.10828131 0.023505885 113.78587 23.406800 6619.8931 1.7833853e+09 0.10792248 0.024741415 113.84221 23.281885 6622.5853 1.7081458e+09 0.10656752 0.024602205 113.89855 23.159815 6625.2775 1.6258697e+09 0.10503744 0.025728697 113.95536 23.032311 6627.9696 1.5389283e+09 0.10322652 0.025691359 114.01347 22.889676 6630.6618 1.4528300e+09 0.10155546 0.025929933 114.06918 22.752934 6633.3539 1.3723565e+09 0.099955127 0.026214046 114.12082 22.626170 6636.0461 1.3046355e+09 0.098077537 0.026531853 114.17360 22.500539 6638.7383 1.2450135e+09 0.096690745 0.025639479 114.22994 22.378468 6641.4304 1.1898524e+09 0.097077508 0.025149762 114.28575 22.255874 6644.1226 1.1441517e+09 0.095772161 0.025356853 114.33740 22.129109 6646.8147 1.0974801e+09 0.094243261 0.026341876 114.38904 22.002344 6649.5069 1.0465190e+09 0.092763704 0.026934974 114.44703 21.860024 6652.1990 9.9109599e+08 0.091975007 0.027305285 114.50456 21.719223 6654.8912 9.3506898e+08 0.090570873 0.027656566 114.55621 21.597136 6657.5834 8.8830809e+08 0.088035316 0.029577788 114.60786 21.475050 6660.2755 8.4835090e+08 0.085832335 0.031876428 114.66401 21.348479 6662.9677 8.1451722e+08 0.083782990 0.032501349 114.72035 21.221715 6665.6598 7.7816073e+08 0.082879685 0.027465972 114.77815 21.086193 6668.3520 7.3959021e+08 0.081903542 0.027782261 114.83625 20.948862 6671.0441 7.0302288e+08 0.081703248 0.026865977 114.88831 20.825807 6673.7363 6.7079703e+08 0.081113938 0.028560418 114.93995 20.703737 6676.4285 6.4432779e+08 0.078566102 0.031989867 114.98782 20.577871 6679.1206 6.1784761e+08 0.077650704 0.030168094 115.03478 20.451089 6681.8128 5.9111654e+08 0.078891467 0.030280912 115.08927 20.317177 6684.5049 5.6008965e+08 0.079196357 0.032679715 115.14738 20.179846 6687.1971 5.3141004e+08 0.077415555 0.034232977 115.20042 20.050784 6689.8893 5.0809260e+08 0.074705521 0.033215551 115.25206 19.924018 6692.5814 4.8439743e+08 0.073511447 0.032090168 115.30792 19.790356 6695.2736 4.6365451e+08 0.072762730 0.029809222 115.36602 19.653026 6697.9657 4.4330661e+08 0.071860515 0.030213480 115.41566 19.527287 6700.6579 4.2404227e+08 0.069621380 0.031155693 115.46261 19.405217 6703.3500 4.0805436e+08 0.068900564 0.034551163 115.51658 19.273538 6706.0422 3.8962453e+08 0.068813151 0.038519858 115.57468 19.136207 6708.7344 3.6974577e+08 0.068114558 0.040843274 115.62457 19.006644 6711.4265 3.5217387e+08 0.065876900 0.041177497 115.67153 18.879861 6714.1187 3.3619962e+08 0.063102109 0.047312331 115.72525 18.746678 6716.8108 3.2243037e+08 0.060678909 0.049595650 115.78336 18.609347 6719.5030 3.0841734e+08 0.058256073 0.050891956 115.83769 18.472016 6722.1952 2.9395965e+08 0.058217491 0.050363943 115.89051 18.334685 6724.8873 2.8013121e+08 0.053820684 0.042517036 115.93851 18.209872 6727.5795 2.6806860e+08 0.052019522 0.040188366 115.98546 18.087802 6730.2716 2.5861981e+08 0.050697151 0.040751338 116.04011 17.955198 6732.9638 2.4713694e+08 0.049223258 0.043917639 116.09821 17.817867 6735.6559 2.3484538e+08 0.050046196 0.049989766 116.15210 17.680536 6738.3481 2.2284843e+08 0.051768869 0.059237558 116.20492 17.543204 6741.0403 2.1474475e+08 0.050841003 0.065873518 116.25244 17.419652 6743.7324 2.0771494e+08 0.045804475 0.075988321 116.29940 17.297566 6746.4246 2.0206461e+08 0.042406179 0.074051089 116.35089 17.163677 6749.1167 1.9459533e+08 0.039862828 0.072245971 116.40372 17.026346 6751.8089 1.8618634e+08 0.035433422 0.074053676 116.45654 16.889015 6754.5011 1.7754468e+08 0.033588612 0.075407717 116.50935 16.751684 6757.1932 1.6587279e+08 0.030760567 0.076153715 116.56217 16.614352 6759.8854 1.5650663e+08 0.031982092 0.076033609 116.61499 16.477020 6762.5775 1.5211534e+08 0.036510903 0.077119247 116.66781 16.339689 6765.2697 1.5061072e+08 0.039552257 0.079580425 116.72063 16.202358 6767.9618 1.4946400e+08 0.037205287 0.080898751 116.77345 16.065027 6770.6540 1.4456031e+08 0.031566151 0.088465941 116.82446 15.933844 6773.3462 1.3767073e+08 0.026665788 0.094995608 116.87141 15.816469 6776.0383 1.3158161e+08 0.021746113 0.10152528 116.91941 15.695536 6778.7305 1.2616239e+08 0.016805340 0.10805494 116.97224 15.558184 6781.4226 1.2119450e+08 0.011861066 0.11458461 117.02506 15.420838 6784.1148 1.1561000e+08 0.0069470953 0.12111428 117.07788 15.283507 6786.8070 1.1324465e+08 0.0020122946 0.12764394 117.13129 15.138484 6789.4991 1.0822541e+08 -0.0028568349 0.13417361 117.18562 14.981531 6792.1913 1.0217896e+08 -0.0077094916 0.14070328 117.23884 14.842892 6794.8834 94012799. -0.012547072 0.14723295 117.29167 14.710843 6797.5756 88083553. -0.017426758 0.15376261 117.34448 14.574347 6800.2677 87654452. -0.022370946 0.16029228 117.39730 14.437016 6802.9599 85687680. -0.027300177 0.16682195 117.44511 14.299684 6805.6521 83491682. -0.032229737 0.17335161 117.49294 14.162647 6808.3442 77963450. -0.037157792 0.17988128 117.54576 14.030598 6811.0364 74524271. -0.042100874 0.18641095 117.59882 13.894503 6813.7285 74098146. -0.047034532 0.19294062 117.65315 13.737550 6816.4207 70513137. -0.051986388 0.19947028 117.70672 13.593196 6819.1128 69184688. -0.056924353 0.20599995 117.75954 13.461147 6821.8050 67362500. -0.061877504 0.21252962 117.80912 13.325862 6824.4972 64689574. -0.066859755 0.21905928 117.85666 13.188531 6827.1893 62318478. -0.071864650 0.22558895 117.90909 13.041425 6829.8815 57947456. -0.077002449 0.23211862 117.96332 12.891362 6832.5736 53465590. -0.082284334 0.23864829 118.01614 12.754032 6835.2658 52928082. -0.087567930 0.24517795 118.06922 12.614396 6837.9580 51897971. -0.093218890 0.25170762 118.12355 12.463480 6840.6501 51162314. -0.10022251 0.25823729 118.17439 12.322245 6843.3423 49335921. -0.11843490 0.26476696 118.22193 12.190196 6846.0344 45796756. -0.11249789 0.27129662 118.27368 12.042709 6848.7266 42997653. -0.090329463 0.27782629 118.32801 11.885756