@article{fdi:010074413, title = {{S}ensitivity study of the regional climate model {R}eg{CM}4 to different convective schemes over {W}est {A}frica}, author = {{K}on{\'e}, {B}. and {D}iedhiou, {A}rona and {T}our{\'e}, {N}. {E}. and {S}ylla, {M}. {B}. and {G}iorgi, {F}. and {A}nquetin, {S}. and {B}amba, {A}. and {D}iawara, {A}. and {K}obea, {A}. {T}.}, editor = {}, language = {{ENG}}, abstract = {{T}he latest version of {R}eg{CM}4 with {CLM}4.5 as a land surface scheme was used to assess the performance and sensitivity of the simulated {W}est {A}frican climate system to different convection schemes. {T}he sensitivity studies were performed over the {W}est {A}frican domain from {N}ovember 2002 to {D}ecember 2004 at a spatial resolution of 50 km x 50 km and involved five convective schemes: (i) {E}manuel; (ii) {G}rell; (iii) {E}manuel over land and {G}rell over ocean ({M}ix1); (iv) {G}rell over land and {E}manuel over ocean ({M}ix2); and (v) {T}iedtke. {A}ll simulations were forced with {ERA}-{I}nterim data. {V}alidation of surface temperature at 2 m and precipitation were conducted using data from the {C}limate {R}esearch {U}nit ({CRU}), {G}lobal {P}recipitation {C}limatology {P}roject ({GPCP}) and the {T}ropical {R}ainfall {M}easurement {M}ission ({TRMM}) during {J}une to {S}eptember (rainy season), while the simulated atmospheric dynamic was compared to {ERA}-{I}nterim data. {I}t is worth noting that the few previous similar sensitivity studies conducted in the region were performed using {BATS} as a land surface scheme and involved less convective schemes. {C}ompared with the previous version of {R}eg{CM}, {R}eg{CM}4-{CLM} also shows a general cold bias over {W}est {A}frica whatever the convective scheme used. {T}his cold bias is more reduced when using the {E}manuel convective scheme. {I}n terms of precipitation, the dominant feature in model simulations is a dry bias that is better reduced when using the {E}manuel convective scheme. {C}onsidering the good performance with respect to a quantitative evaluation of the temperature and precipitation simulations over the entire {W}est {A}frican domain and its subregions, the {E}manuel convective scheme is recommended for the study of the {W}est {A}frican climate system.}, keywords = {{AFRIQUE} {DE} {L}'{OUEST} ; {ZONE} {SAHELIENNE} ; {ZONE} {GUINEENNE} ; {ZONE} {TROPICALE}}, booktitle = {}, journal = {{E}arth {S}ystem {D}ynamics}, volume = {9}, numero = {4}, pages = {1261--1278}, ISSN = {2190-4979}, year = {2018}, DOI = {10.5194/esd-9-1261-2018}, URL = {https://www.documentation.ird.fr/hor/fdi:010074413}, }