Elucidation of the Earth envimnmental cbange mechanism by satellite remote sensing and Earth system models

卫星遥感和地球系统模型阐明地球环境变化机制

• 批准号: 17360432
• 负责人: YAMAGUCHI Yasushi
• 金额: $ 6.68万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360432/
• 关键词: Remote sensing; Simple model; Terrestrial ecosystem model; Carbon cycle; Global warming; Glacial-inter glacial cycle; Ice sheet; General circulation model; 温暖化; 気象衛星; エルニーニョ; NDVI; 純一次生産量; 海洋循環

In order to elucidate the enviromnental change mechanism in the Earth system, we carried out this research by combining satellite remote sensing and Earth system models with a focus on the interactions between the biosphere and climate. We developed a simple Earth system model which couples energy and carbon cycles in the atmosphere-ocean interactive system, and found that the oscillation occurs when the partial pressure of carbon dioxide in the deep ocean is smaller than that of the atmosphere. We also developed a meridional one-dimensional Earth system model of a coupled energy and carbon cycles, and investigated the effect of global warming to carbon uptake by the terrestrial biosphere : The global net ecosystem production(NEP)is greatly affected not only by the biosphere carbon dioxide fertilization and temperature dependency of soil decomposition but also by temperature dependency of net primary production(NPP)and soil decomposition rate. We developed a new terrestrial ecosystem model named BEAMS, and analyzed the global NPP variations since 1980's by using satellite observation data as input.We investigated the effect of the Himalaya-Tibetan Plateau(HT)on the onset of Asian monsoon with the coupled ocean-atmosphere General Circulation Model(GCM), and found that the existence of HT is an important condition to form the sub-tropical high atmospheric pressure zone of the northern hemisphere in summer. Interaction between the spatial and temporal variations of terrestrial vegetation and climate since 1980's was studied by using satellite remote sensing. We found that El Nino gives a negative impact to all types of the terrestrial vegetation mainly due to precipitation decrease, and there are time lag between El Nino and the terrestrial vegetation activities.

为了阐明地球系统的环境变化机制，我们将卫星遥感与地球系统模型相结合，重点研究了生物圈与气候之间的相互作用。我们建立了一个简单的地球系统模型，该模型耦合了大气-海洋相互作用系统中的能量循环和碳循环，发现当深海二氧化碳分压小于大气分压时，地球系统就会发生振荡。我们还建立了一个能量和碳循环耦合的经向一维地球系统模型，并研究了全球变暖对陆地生物圈碳吸收的影响：全球生态系统净生产量(NEP)不仅受到生物圈二氧化碳施肥和土壤分解的温度依赖性的影响，而且还受到净初级生产力(NPP)和土壤分解速率的温度依赖性的影响。建立了一个新的陆地生态系统模式BEAMS，利用卫星观测资料分析了1980年代S以来全球净初级生产力的变化，并利用海洋-大气耦合环流模式研究了喜马拉雅-青藏高原(HT)对亚洲季风爆发的影响，发现HT的存在是夏季北半球副热带高压带形成的重要条件。利用卫星遥感技术研究了S 80年代以来陆地植被时空变化与气候的相互作用。研究发现，厄尔尼诺现象对各类陆地植被的负面影响主要是由于降水的减少，并且厄尔尼诺现象与陆地植被活动之间存在一定的时滞。

项目成果

Reducing the Discrepancy Between ASTER and MODIS Land Surface Temperature Products.

• DOI: 10.3390/s7123043
• 发表时间: 2007-12-04
• 期刊: Sensors (Basel, Switzerland)
• 作者: Liu Y;Yamaguchi Y;Ke C
• 通讯作者: Ke C

Time-space characteristics of diurnal rainfall over Borneo and surrounding oceans as observed by TRMM-PR

• DOI: 10.1175/jcli3714.1
• 发表时间: 2006-04-01
• 期刊: JOURNAL OF CLIMATE
• 影响因子: 4.9
• 作者: Ichikawa, H;Yasunari, T
• 通讯作者: Yasunari, T

Scaling of land surface temperature using satellite data: A case examination on ASTER and MODIS products over a heterogeneous terrain area

• DOI: 10.1016/j.rse.2006.06.012
• 发表时间: 2006-11-30
• 期刊: REMOTE SENSING OF ENVIRONMENT
• 影响因子: 13.5
• 作者: Liu, Yuanbo;Hiyama, Tetsuya;Yamaguchi, Yasushi
• 通讯作者: Yamaguchi, Yasushi

The behaviour of a surface temperature/vegetation index(TVX)matrixderived from 10-day composite AVHRR images over monsoon Asia

亚洲季风地区 10 天复合 AVHRR 图像得出的表面温度/植被指数 (TVX) 矩阵的行为

• 发表时间: 2007
• 期刊: Hydrological Processes 21
• 作者: Higuchi;A.;Hiyama;T.;Fukuta;Y.;Suzuki;R. and Fukushima;Y.
• 通讯作者: Y.

Estimation of regional evapotranspiration in a vegetated area using ASTER data

使用 ASTER 数据估算植被区域的区域蒸散量

• 发表时间: 2007
• 作者: Kafle;H. and Yamaguchi;Y.
• 通讯作者: Y.