气候变化领域集成服务门户(CCPortal): Agronomic monsoon onset definitions to support planting decisions for rainfed rice in Bangladesh

CCPortal

DOI	10.1007/s10584-024-03736-z
	Agronomic monsoon onset definitions to support planting decisions for rainfed rice in Bangladesh
	Han, Eunjin; Montes, Carlo; Hussain, Sk. Ghulam; Krupnik, Timothy J.
发表日期	2024
ISSN	0165-0009
EISSN	1573-1480
起始页码	177
结束页码	5
卷号	177 期号:5
英文摘要	The usability gaps between climate information producers and users have always been an issue in climate services. This study aims to tackle the gap for rice farmers in Bangladesh by exploring the potential value of tailored agronomic monsoon onset definitions. Summer aman rice is primarily cultivated under rainfed conditions, and farmers rely largely on monsoon rainfall and its onset for crop establishment. However, farmers' perception of the arrival of sufficient rains does not necessarily coincide with meteorological definitions of monsoon onset. Therefore, localized agronomic definitions of monsoon onset need to be developed and evaluated to advance in the targeted actionable climate forecast. We analyzed historical daily rainfall from four locations across a north-south gradient in Bangladesh and defined dynamic definitions of monsoon onset based on a set of local parameters. The agronomic onset definition was evaluated in terms of attainable yields simulated by a rice simulation model compared to results obtained using conventional meteorological onset parameters defined by the amount of rainfall received and static onset dates. Our results show that average simulated yields increase up to 7 - 9% and probabilities of getting lower yields are reduced when the year-to-year varying dynamic onset is used over the two drier locations under fully rainfed conditions. It is mainly due to earlier transplanting dates, avoiding the impact of drought experienced with early monsoon demise. However, no yield increases are observed over the two wetter locations. This study shows the potential benefits of generating localized and translated climate predictions.
英文关键词	Monsoon onset definition; South Asian monsoon; Bangladesh aman rice; Crop modeling
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001221707000002
来源期刊	CLIMATIC CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/299359
作者单位	United States Department of Agriculture (USDA); CGIAR; International Maize & Wheat Improvement Center (CIMMYT); CGIAR; International Maize & Wheat Improvement Center (CIMMYT)
推荐引用方式 GB/T 7714	Han, Eunjin,Montes, Carlo,Hussain, Sk. Ghulam,et al. Agronomic monsoon onset definitions to support planting decisions for rainfed rice in Bangladesh[J],2024,177(5).
APA	Han, Eunjin,Montes, Carlo,Hussain, Sk. Ghulam,&Krupnik, Timothy J..(2024).Agronomic monsoon onset definitions to support planting decisions for rainfed rice in Bangladesh.CLIMATIC CHANGE,177(5).
MLA	Han, Eunjin,et al."Agronomic monsoon onset definitions to support planting decisions for rainfed rice in Bangladesh".CLIMATIC CHANGE 177.5(2024).