Sea Surface Temperature-Forced Monsoon Evolution and Variability in West Africa

西非海面温度强迫季风演变和变化

基本信息

  • 批准号:
    1612904
  • 负责人:
  • 金额:
    $ 59.04万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2016
  • 资助国家:
    美国
  • 起止时间:
    2016-11-01 至 2021-10-31
  • 项目状态:
    已结题

项目摘要

The West African monsoon delivers most of the annual rainfall to the Sahel region in a short but intense rainy season. Since agriculture remains the dominant economic activity in terms of percent of population engaged, understanding and predicting the variability in both the magnitude and timing of the monsoon season is especially important and potentially devastating if not prepared for. This work;will directly contribute to improving seasonal to interannual prediction of monsoon rainfall. The results of this work will be highly relevant to climate prediction organizations interested in helping the Sahel such as the International Research Institute for Climate and Society and its long-standing partners in West Africa. Through various channels, information from the study can inform applications;of climate information for better decision-making in the Sahel. The work will also support a graduate student. Knowledge gathered from this study will also contribute to the teaching of climate and society in the School for International and Public Affairs (SIPA) at Columbia University programs.The goal of this project is to improve the understanding and prediction of the West African summer monsoon, specifically response to changes in sea surface temperatures in the surrounding tropical oceans. Information on sea surface temperature fluctuations is routinely available and is important for climate prediction. The seasonal amount of Sahel monsoon rains, varies from year to year sometimes dropping to drought levels with serious effects on society. This variability has been linked to sea surface temperature fluctuations in remote and nearby ocean areas. Past studies have shown a that summer monsoon rains tend to weaken and sometimes fail when eastern tropical Pacific sea surface temperatures are relatively warm, a state known as the El Niño. Rains tend to be strong and plentiful when the east tropical pacific are relatively cool, during the La Nina phase. However, this association is not steady because the region is also sensitive to temperature changes in other basins, such as the tropical Atlantic and the Indian Oceans. Utilizing an atmospheric global climate model, in which different sea surface temperature scenarios are prescribed in the global ocean mimicking what is found in observations, this research will elucidate how the monsoon responds to changes in local and remote sea surface temperature changes in different basins, acting separately and together. By understanding the response pattern and the mechanisms of momentum, heat and moisture transport as a function of time, it is anticipated that possibilities of prediction of monsoon rainfall, based on pre-season sea surface temperatures conditions, will be advanced. This experimental method also provides a measure of "signal-to-noise" ratio in the monsoon rainfall. Putting the observations in that perspective will help frame better the prediction uncertainties, also helping advance the quality of monsoon season prediction.
西非季风在一个短暂但强烈的雨季为萨赫勒地区带来了大部分的年降雨量。由于农业仍然是占人口百分比的主要经济活动,因此了解和预测季风季节的大小和时间的变化尤为重要,如果不做好准备,可能具有破坏性。这项工作;将直接有助于改善季风雨的季节到年际预测。这项工作的结果将与有兴趣帮助萨赫勒地区的气候预测组织(如国际气候与社会研究所及其在西非的长期合作伙伴)高度相关。通过各种渠道,研究的信息可以通知应用程序;为萨赫勒地区更好的决策提供气候信息。这项工作还将支持一名研究生。从这项研究中收集的知识也将有助于哥伦比亚大学国际与公共事务学院(SIPA)的气候与社会课程的教学。该项目的目标是提高对西非夏季季风的理解和预测,特别是对周围热带海洋海面温度变化的反应。关于海面温度波动的资料经常可得,对气候预测很重要。萨赫勒季风降雨的季节性数量每年都在变化,有时会降至干旱水平,对社会造成严重影响。这种变化与遥远和附近海洋区域的海面温度波动有关。过去的研究表明,当东部热带太平洋海面温度相对温暖时,夏季季风性降雨往往会减弱,有时甚至会消失,这种状态被称为El Niño。在拉尼娜现象期间,当东热带太平洋相对凉爽时,雨水往往会充沛而强劲。然而,这种联系并不稳定,因为该地区对其他盆地(如热带大西洋和印度洋)的温度变化也很敏感。利用大气全球气候模型,在模拟观测结果的全球海洋中规定不同的海表温度情景,本研究将阐明季风如何响应不同盆地的本地和远程海表温度变化,单独或共同作用。通过了解动量、热量和水分输送随时间变化的响应模式和机制,预计将提高基于季前海面温度条件预测季风降雨的可能性。该实验方法还提供了一种测量季风降雨“信噪比”的方法。将观测结果放在这个角度将有助于更好地确定预测的不确定性,也有助于提高季风季节预测的质量。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Yochanan Kushnir其他文献

Volcanic rain shift
火山雨变化
  • DOI:
    10.1038/nclimate1941
  • 发表时间:
    2013-06-25
  • 期刊:
  • 影响因子:
    27.100
  • 作者:
    Yochanan Kushnir
  • 通讯作者:
    Yochanan Kushnir
Europe's winter prospects
欧洲的冬季前景
  • DOI:
    10.1038/18560
  • 发表时间:
    1999-03-25
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Yochanan Kushnir
  • 通讯作者:
    Yochanan Kushnir
Europe's winter prospects
欧洲的冬季前景
  • DOI:
    10.1038/18560
  • 发表时间:
    1999-03-25
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    Yochanan Kushnir
  • 通讯作者:
    Yochanan Kushnir

Yochanan Kushnir的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Yochanan Kushnir', 18)}}的其他基金

Collaborative Research: P2C2--Hydrological Variability during the Last Millennium from High Resolution Proxies
合作研究:P2C2——来自高分辨率代理的过去千年的水文变化
  • 批准号:
    1003417
  • 财政年份:
    2010
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant

相似国自然基金

“surface-17”量子纠错码在超导量子电路中的实现
  • 批准号:
  • 批准年份:
    2021
  • 资助金额:
    30 万元
  • 项目类别:
    青年科学基金项目
Space-surface Multi-GNSS机会信号感知植生参数建模与融合方法研究
  • 批准号:
    41974039
  • 批准年份:
    2019
  • 资助金额:
    63.0 万元
  • 项目类别:
    面上项目
基于surface hopping方法探索有机半导体中激子解体机制
  • 批准号:
    LY19A040007
  • 批准年份:
    2018
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
基于强自旋轨道耦合纳米线自旋量子比特的Surface code量子计算实验研究
  • 批准号:
    11574379
  • 批准年份:
    2015
  • 资助金额:
    73.0 万元
  • 项目类别:
    面上项目
全空间中临界Surface Quasi-geostrophic方程的全局吸引子及其分形维数
  • 批准号:
    11426209
  • 批准年份:
    2014
  • 资助金额:
    3.0 万元
  • 项目类别:
    数学天元基金项目
Nano/Micro-surface pattern的摩擦特性研究
  • 批准号:
    50765008
  • 批准年份:
    2007
  • 资助金额:
    22.0 万元
  • 项目类别:
    地区科学基金项目

相似海外基金

AGS-PRF: Understanding Historical Trends in Tropical Pacific Sea Surface Temperature Patterns
AGS-PRF:了解热带太平洋海面温度模式的历史趋势
  • 批准号:
    2317224
  • 财政年份:
    2024
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Fellowship Award
Interactions between winds and sea surface temperature at timescales of several days
几天时间尺度上风与海面温度之间的相互作用
  • 批准号:
    2241822
  • 财政年份:
    2023
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant
A study to clarify the effects of changes in local wind systems and fluctuations in coastal sea surface temperature on summer temperature and localized heavy rainfall in the Kanto Plain
研究阐明当地风系变化和沿海海面温度波动对关东平原夏季气温和局地强降雨的影响
  • 批准号:
    23K00979
  • 财政年份:
    2023
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Sea surface temperature pattern influence on monsoon variability and change
海面温度格局对季风变率和变化的影响
  • 批准号:
    2890055
  • 财政年份:
    2023
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Studentship
Change in Kuroshio under global warming: Assessment of its impact on sea surface temperature and extreme weather events around Japan
全球变暖下黑潮的变化:评估其对日本各地海面温度和极端天气事件的影响
  • 批准号:
    22K03714
  • 财政年份:
    2022
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Collaborative Research: Coupled Ocean Mixed Layer Processes Driving Sea Surface Temperature
合作研究:耦合海洋混合层过程驱动海面温度
  • 批准号:
    2219886
  • 财政年份:
    2022
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant
Collaborative Research: Determining the Role of Ocean Dynamics in Atlantic Sea Surface Temperature Variations Using a Hierarchy of Coupled Models
合作研究:使用耦合模型层次结构确定海洋动力学在大西洋表面温度变化中的作用
  • 批准号:
    2219934
  • 财政年份:
    2022
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant
Collaborative Research: Coupled Ocean Mixed Layer Processes Driving Sea Surface Temperature
合作研究:耦合海洋混合层过程驱动海面温度
  • 批准号:
    2219999
  • 财政年份:
    2022
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant
Collaborative Research: Coupled Ocean Mixed Layer Processes Driving Sea Surface Temperature
合作研究:耦合海洋混合层过程驱动海面温度
  • 批准号:
    2219980
  • 财政年份:
    2022
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant
Collaborative Research: Correcting sea surface temperature proxies for seasonal biases: combined data and model investigation
合作研究:修正海面温度代理的季节性偏差:结合数据和模型研究
  • 批准号:
    2202911
  • 财政年份:
    2022
  • 资助金额:
    $ 59.04万
  • 项目类别:
    Standard Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了