# Example 2.5 - A model for Mauna Kea based on median profiles computed from # NASA MERRA-2 reanalysis data for the period 2006-2015. # # Modified to output Trj and Jacobian with respect to trop. h2o. # # # MERRA references: # M. M. Rienecker et al. (2011), MERRA: NASA's Modern-Era Retrospective # Analysis for Research and Applications. J. Climate 24:3624. # # A. Molod et al (2015), Development of the GEOS-5 atmospheric general # circulation model: evolution from MERRA to MERRA2. Geoscience Model # Development 8:1339. # # MERRA is produced by the NASA/Goddard Global Modeling and Assimilation # Office (GMAO). MERRA-2 data are archived and distributed by the Goddard # Earth Sciences Data and Information Services Center (GES DISC). # # Data reference: # Global Modeling and Assimilation Office (GMAO) (2015), # MERRA-2 inst3_3d_asm_Np: 3d,3-Hourly,Instantaneous,Pressure-Level, # Assimilation,Assimilated Meteorological Fields,version 5.12.4, # Greenbelt, MD, USA:Goddard Space Flight Center Distributed Active # Archive Center (GSFC DAAC), # Accessed 2016 Feb 10 at doi:10.5067/QBZ6MG944HW0 # ? ? Usage: am example2.5.trop_h2o_Jacobian.amc fmin fmax df zenith_angle Tground trop_h2o_scale ? ? Example: am example2.5.trop_h2o_Jacobian.amc 170 GHz 390 GHz 2 MHz 0 deg 277 K 1.0 ? ? Tground is the surface temperature. At the summit of Mauna Kea, this is ? usually close to the median value of 277 K for the free atmosphere at the ? same altitude. ? ? trop_h2o_scale is a scaling factor on the median tropospheric water vapor ? profile. Spectra for other percentile profiles can be approximated by ? scaling the median profile to obtain the same total precipitable water ? vapor (pwv) column as follows: ? ? H2O profile percentile | 5 | 25 | 50 | 75 | 95 ? trop_h2o_scale | 0.206 | 0.513 | 1.00 | 2.07 | 4.60 ? pwv [mm] | 0.384 | 0.952 | 1.86 | 3.84 | 8.54 ? 225 GHz zenith opacity | 0.029 | 0.051 | 0.087 | 0.170 | 0.367 ? ? Setting df larger than about 100 kHz may result in warnings of unresolved ? lines on the lowest-pressure levels in this model. These warnings may ? be ignored if detailed resolution of line cores is not needed. ? f %1 %2 %3 %4 %5 %6 output f GHz Trj K jacobian Trj za %7 %8 tol 1e-4 Nscale troposphere h2o %11 1.0 T0 2.7 K layer mesosphere Pbase 0.1 mbar Tbase 222.3 K lineshape Voigt-Kielkopf column dry_air vmr column h2o vmr 6.46e-06 column o3 vmr 1.77e-06 layer mesosphere Pbase 0.3 mbar Tbase 243.3 K lineshape Voigt-Kielkopf column dry_air vmr column h2o vmr 6.60e-06 column o3 vmr 1.65e-06 layer mesosphere Pbase 0.4 mbar Tbase 249.2 K lineshape Voigt-Kielkopf column dry_air vmr column h2o vmr 6.75e-06 column o3 vmr 1.61e-06 layer mesosphere Pbase 0.5 mbar Tbase 254.6 K lineshape Voigt-Kielkopf column dry_air vmr column h2o vmr 6.75e-06 column o3 vmr 1.80e-06 layer mesosphere Pbase 0.7 mbar Tbase 262.1 K lineshape Voigt-Kielkopf column dry_air vmr column h2o vmr 6.72e-06 column o3 vmr 2.12e-06 layer stratosphere Pbase 1 mbar Tbase 264.7 K lineshape Voigt-Kielkopf column dry_air vmr column h2o vmr 6.63e-06 column o3 vmr 2.66e-06 layer stratosphere Pbase 2 mbar Tbase 255.9 K column dry_air vmr column h2o vmr 6.34e-06 column o3 vmr 4.01e-06 layer stratosphere Pbase 3 mbar Tbase 248.4 K column dry_air vmr column h2o vmr 5.97e-06 column o3 vmr 5.88e-06 layer stratosphere Pbase 4 mbar Tbase 243.9 K column dry_air vmr column h2o vmr 5.69e-06 column o3 vmr 7.28e-06 layer stratosphere Pbase 5 mbar Tbase 240.3 K column dry_air vmr column h2o vmr 5.47e-06 column o3 vmr 8.13e-06 layer stratosphere Pbase 7 mbar Tbase 234.9 K column dry_air vmr column h2o vmr 5.25e-06 column o3 vmr 8.75e-06 layer stratosphere Pbase 10 mbar Tbase 230.0 K column dry_air vmr column h2o vmr 5.01e-06 column o3 vmr 9.10e-06 layer stratosphere Pbase 20 mbar Tbase 222.3 K column dry_air vmr column h2o vmr 4.72e-06 column o3 vmr 8.01e-06 layer stratosphere Pbase 30 mbar Tbase 216.6 K column dry_air vmr column h2o vmr 4.49e-06 column o3 vmr 5.67e-06 layer stratosphere Pbase 40 mbar Tbase 212.1 K column dry_air vmr column h2o vmr 4.37e-06 column o3 vmr 3.60e-06 layer stratosphere Pbase 50 mbar Tbase 208.5 K column dry_air vmr column h2o vmr 4.30e-06 column o3 vmr 2.23e-06 layer stratosphere Pbase 70 mbar Tbase 202.1 K column dry_air vmr column h2o vmr 4.30e-06 column o3 vmr 1.23e-06 layer troposphere Pbase 100 mbar Tbase 198.5 K column dry_air vmr column h2o vmr 4.83e-06 column o3 vmr 4.72e-07 layer troposphere Pbase 150 mbar Tbase 207.2 K column dry_air vmr column h2o vmr 1.04e-05 column o3 vmr 1.39e-07 layer troposphere Pbase 200 mbar Tbase 219.0 K column dry_air vmr column h2o vmr 3.40e-05 column o3 vmr 6.74e-08 layer troposphere Pbase 250 mbar Tbase 229.9 K column dry_air vmr column h2o vmr 9.15e-05 column o3 vmr 5.25e-08 layer troposphere Pbase 300 mbar Tbase 239.5 K column dry_air vmr column h2o vmr 1.79e-04 column o3 vmr 4.85e-08 layer troposphere Pbase 350 mbar Tbase 247.7 K column dry_air vmr column h2o vmr 2.76e-04 column o3 vmr 4.69e-08 layer troposphere Pbase 400 mbar Tbase 254.7 K column dry_air vmr column h2o vmr 3.99e-04 column o3 vmr 4.60e-08 layer troposphere Pbase 450 mbar Tbase 260.9 K column dry_air vmr column h2o vmr 5.71e-04 column o3 vmr 4.52e-08 layer troposphere Pbase 500 mbar Tbase 266.2 K column dry_air vmr column h2o vmr 7.94e-04 column o3 vmr 4.45e-08 layer troposphere Pbase 550 mbar Tbase 270.9 K column dry_air vmr column h2o vmr 1.09e-03 column o3 vmr 4.38e-08 layer troposphere Pbase 600 mbar Tbase 275.0 K column dry_air vmr column h2o vmr 1.46e-03 column o3 vmr 4.30e-08 layer troposphere Pbase 625 mbar Tbase %9 %10 column dry_air vmr column h2o vmr 1.87e-03 column o3 vmr 4.23e-08