GLOBAL MONSOON DOMAIN AND INTENSITY

Figure number: Figure 3.17 From the IPCC Working Group I Contribution to the Sixth Assessment Report: Chapter 3

Description:

Model evaluation of global monsoon domain, intensity, and circulation. (a-b) Climatological summer-winter range of precipitation rate, scaled by annual mean precipitation rate (shading) and 850 hPa wind velocity (arrows) based on (a) GPCP and ERA5 and (b) a multi-model ensemble mean of CMIP6 historical simulations for 1979-2014. Enclosed by red lines is the monsoon domain based on the definition by Wang and Ding (2008) (c-d) 5-year running mean anomalies of (c) global land monsoon precipitation index defined as the percentage anomaly of the summertime precipitation rate averaged over the monsoon regions over land, relative to its average for 1979-2014 (the period indicated by light grey shading) and (d) the tropical monsoon circulation index defined as the vertical shear of zonal winds between 850 and 200 hPa levels averaged over 0º-20ºN, from 120ºW eastward to 120ºE in NH summer (Wang et al., 2013; m s–1) in CMIP5 historical and RCP4.5 simulations, CMIP6 historical and AMIP simulations. Summer and winter are defined for individual hemispheres: May through September for NH summer and SH winter, and November through March for NH winter and SH summer. The number of models and ensembles are given in the legend. The multi-model ensemble mean and percentiles are calculated after weighting individual members with the inverse of the ensemble size of the same model, so that individual models are equally weighted irrespective of ensemble size.

Author list:

• Kosaka, Y.: University of Tokyo, Japan; [email protected]
• Kazeroni, R.: DLR, Germany

Publication sources:

Please list any publications that describe, explain or use this figure.

• A paper title, A. Author et al, journal of science stuff 9, p51, DOI:564, 2021.

ESMValTool Branch:

• ESMValTool-AR6-OriginalCode-FinalFigures: ar6_chapter_3

ESMValCore Branch:

• ESMValCore-AR6-OriginalCode-FinalFigures: fix_cmip6_models_newcore

Recipe & diagnostics:

Recipe used: recipes/ipccwg1ar6ch3/recipe_ipccwg1ar6ch3_globalmonsoon.yml

Diagnostics used:

• diag_scripts/ar6ch3_monsoon/monsoon_domain_intensity.ncl
• diag_scripts/ar6ch3_monsoon/draw_global_monsoon.ncl

Expected image path:

This is the path of the image relative to the automatically generated ESMValTool output location:

• recipe_ipccwg1ar6ch3_globalmonsoon_YYYYMMDD_HHMMSS/plots/draw_global_monsoon_cmip5+6/plot_global_monsoon_runmean5yr/global_monsoon_GPCP-SG+ERA5_movingave5yrs.pdf

Ancillary figures and datasets:

In addition to the main figure, diagnostics may produce several figures and datasets along the way or several versions of the main figure. Please use this space to highlight anything that may be useful for future iterations:

Additional datasets:

What additional datasets were used to produce this figure? Where are they on the computational machine or in the respository? Can they be re-created? What are their access permissions/Licenses?

Software description:

• ESMValTool environment file: IPCC_environments/ar6_newcore_remi_conda_environment.yml
• pip file: IPCC_environments/ar6_newcore_remi_pip_environment.txt

Hardware description:

Machine used: Mistral