نتایج جستجو برای: meteorological drought

تعداد نتایج: 52943  

2017
Steve Frolking Stephen Hagen Bobby Braswell Tom Milliman Christina Herrick Seth Peterson Dar Roberts Michael Keller Michael Palace

Amazonia has experienced large-scale regional droughts that affect forest productivity and biomass stocks. Space-borne remote sensing provides basin-wide data on impacts of meteorological anomalies, an important complement to relatively limited ground observations across the Amazon's vast and remote humid tropical forests. Morning overpass QuikScat Ku-band microwave backscatter from the forest ...

Journal: :Remote Sensing 2017
Lingtong Du Naiping Song Ke Liu Jing Hou Yue Hu Yuguo Zhu Xinyun Wang Lei Wang Yige Guo

The Temperature Vegetation Dryness Index (TVDI), a drought monitoring index based on an empirical parameterization of the Land Surface Temperature (LST)–Normalized Difference Vegetation Index (NDVI) space, has been widely implemented in a variety of ecosystems worldwide because it does not depend on ancillary data. However, the simulation of dry/wet edges in the TVDI model can be problematic be...

2017
Ping Li Nina Omani Indrajeet Chaubey Xiaomei Wei

Drought is one of the most widespread extreme climate events with a potential to alter freshwater availability and related ecosystem services. Given the interconnectedness between freshwater availability and many ecosystem services, including food provisioning, it is important to evaluate the drought implications on freshwater provisioning and food provisioning services. Studies about drought i...

2009
Òscar Guadayol Josep M. Gasol Cristina Roldán Elisa Berdalet Ramon Massana Anna Sabata

In temperate coastal zones, episodic meteorological forcing can have a strong impact on the classical seasonal phytoplankton succession. Episodes of continental runoff and wind storms involve nutrient enrichment and turbulence, 2 factors that can promote primary production and alter the planktonic community species composition and size structure. We determined the joint influence of these 2 var...

2017
Mingzhi Yang Weihua Xiao Yong Zhao Xudong Li Fan Lu Chuiyu Lu Yan Chen

In the current human-influenced era, drought is initiated by natural and human drivers, and human activities are as integral to drought as meteorological factors. In large irrigated agricultural regions with high levels of human intervention, where the natural farmland soil moisture has usually been changed significantly by high-frequency irrigation, the actual severity of agricultural drought ...

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