@article{fdi:010064953, title = {{S}ensitivity testing of {WRF} parameterizations on air-sea interaction and its impact on water cycle in the {G}ulf of {G}uinea}, author = {{M}eynadier, {R}. and de {C}oetlogon, {G}. and {B}astin, {S}. and {E}ymard, {L}. and {J}anicot, {S}erge}, editor = {}, language = {{ENG}}, abstract = {{A} strong ocean-atmosphere coupling exists in the eastern equatorial region of the tropical {A}tlantic at intraseasonal time-scales, with a significant contribution in the functioning and partitioning of the water cycle in spring over the ocean, as well as later in the season over {W}est {A}frica. {U}ncertainties in simulating the air-sea interaction in the {G}ulf of {G}uinea and its impact on the water cycle are studied using modelling experiments during spring-summer 2006 with the {W}eather {R}esearch and {F}orecasting model ({WRF}). {T}ested parameters include physical packages of cumulus ({C}u), planetary boundary-layer ({PBL}), microphysics ({MP}) and radiative ({RAD}) schemes. {T}he simulations are compared with satellite-based observations, ship-based radiosonde data and state-of-the-art atmospheric model reanalyses. {R}esults show that cumulus, microphysics and radiative parametrizations exert a large influence on the simulated seasonal distribution of regional convective rainfall. {N}on-local {PBL} schemes are determinant to simulate the correct surface wind pattern and water vapor distribution in order to get realistic precipitation from intra-seasonal to diurnal scales, especially over the ocean where the nocturnal rainfall representation is improved.}, keywords = {{W}est {A}frica ; air-sea interaction ; {WRF} ; physical parametrization ; rainfall ; radiosonde observations ; {GUINEE} {GOLFE}}, booktitle = {}, journal = {{Q}uarterly {J}ournal of the {R}oyal {M}eteorological {S}ociety}, volume = {141}, numero = {690}, pages = {1804--1820}, ISSN = {0035-9009}, year = {2015}, DOI = {10.1002/qj.2483}, URL = {https://www.documentation.ird.fr/hor/fdi:010064953}, }