Despite its perennial canopy, the Amazonian tropical evergreen forest shows significant canopy growth seasonality, which has been represented by optical satellite-based observations. In this paper, a new Microwave Temperature–Vegetation Drought Index (MTVDI) based on Advanced Scanning Radiometer for Earth Observing System (AMSR-E) sensors was used to capture seasonality from 2003 2010 in compar...

Droughts produce a complex set of negative economic, environmental, and social impacts across a country or region. Using monthly standardized Precipitation Index (SPI) values, drought characteristics, namely, drought duration, severity, interval time and minimum SPI values, were determined. Two exponential distributions were used to model drought duration and interval time, respectively; gamma ...

In recent years, global climate change has altered precipitation patterns, causing uneven spatial and temporal distribution of precipitation that gradually induces precipitation polarization phenomena. Taiwan is located in the subtropical climate zone, with distinct wet and dry seasons, which makes the polarization phenomenon more obvious; this has also led to a large difference between river f...

South Asia is home to one of the fastest-growing populations in Asia, and human activities are leaving indelible marks on land surface. Yet likelihood successive observed droughts (SA) its four subregions (R-1: semi-arid, R-2: arid, R-3: subtropical wet, R-4: tropical wet dry) remains poorly understood. Using state-of-the-art self-calibrated Palmer Drought Severity Index (scPDSI), we examined i...

Detailed study of historical drought events in North-Central China (NCC) is important to understand current hydroclimate variability the background global warming. Here, we combined 12 published tree-ring chronologies and dryness/wetness indices (DWI) reconstruct dry wet climate across NCC. These 24 proxy records showed similarly significant responses warm season (May–June–July–August–September...

Moisture conditions, especially those that occur as multi-decadal anomalies, have profound impacts on society, in arid and semi-arid regions. However, the lack of high-resolution climate data for first millennium CE greatly limits our understanding how moisture variations influenced history. Here, we present an 1882-year (134–2015 CE) tree-ring chronology developed from Qilian juniper (Juniperu...

Droughts are the most frequent natural disaster in regions at margins of East Asian summer monsoon (EASM), which pose threats to agriculture, economy, and human lives. However, limitations only approximately 60 years meteorological observations hamper our understanding characteristics mechanisms local hydroclimate. Trees growing marginal region EASM usually sensitive moisture variations have pl...

The insular Caribbean experiences numerous climate and environmental hazards, including but not limited to hurricanes, floods, earthquakes, drought. While some hazards are well explored in scientific literature, drought is considered one of the neglected because lack studies focusing on its causes effects. This study identifies spatial distribution seasonal from 1950 2017, relationship with eas...