Climate Change and Drought: a Perspective on Drought Indices

  title={Climate Change and Drought: a Perspective on Drought Indices},
  author={Sourav Mukherjee and Ashok Kumar Mishra and Kevin E. Trenberth},
  journal={Current Climate Change Reports},
Droughts occur naturally, but climate change has generally accelerated the hydrological processes to make them set in quicker and become more intense, with many consequences, not the least of which is increased wildfire risk. There are different types of drought being studied, such as meteorological, agricultural, hydrological, and socioeconomic droughts; however, a lack of unanimous definition complicates drought study. Drought indices are used as proxies to track and quantify droughts… 

Meteorological and Hydrological Drought Analysis and Its Impact on Water Quality and Stream Integrity

Rising temperature and shifting precipitation patterns due to climate change are likely to intensify droughts throughout the world. Understanding the drought characteristics of possible future

Impacts of Global Climate Warming on Meteorological and Hydrological Droughts and Their Propagations

Meteorological to hydrological drought propagation has been widely studied to reflect the relationship between these drought categories and better understand drought mechanisms. However, global

Response of Ecohydrological Variables to Meteorological Drought under Climate Change

Drought is the most widespread climatic extreme that has negative impacts on ecohydrology. Studies have shown that drought can cause certain degrees of disturbances to different ecohydrological

A Holistic View of Water Management Impacts on Future Droughts: A Global Multimodel Analysis

This study investigates the impacts of climate change and water management including agricultural irrigation, water withdrawal, and reservoir regulation on future meteorological, agricultural, and

Development of a New Multivariate Composite Drought Index for the Blue Nile River Basin

Drought is a slow-onset phenomenon that evolves over a season or even years. Drought affects people more than any other natural disaster due to its widespread and significant negative impacts.

A Study on Sensitivities of Tropical Forest GPP Responding to the Characteristics of Drought—A Case Study in Xishuangbanna, China

Droughts that occur in tropical forests (TF) are expected to significantly impact the gross primary production (GPP) and the capacity of carbon sinks. Therefore, it is crucial to evaluate and analyze

Drought indices: aggregation is necessary or is it only the researcher's choice?

Drought is a natural phenomenon caused by extreme and persistent precipitation shortage. This shortfall causes impacts on hydrology, agriculture, and the economy of a country. Secondly,

Challenges for drought assessment in the Mediterranean region under future climate scenarios




Understanding the Role of Climate Characteristics in Drought Propagation

In this study, we use numerical experiments with a simple water balance model to understand the roles of key climate characteristics in hydrologic drought propagation and the consequence of human

Multivariate drought index: An information theory based approach for integrated drought assessment

Drought risk assessment under climate change is sensitive to methodological choices for the estimation of evaporative demand

Daily output from two CMIP5 GCMs is analyzed to evaluate how differences in E0 formulation, treatment of meteorological driving data, choice of GCM, and standardization of time series influence the estimation of E0 and finds that standardization tends to amplify divergences between the E0 trends calculated using different E0 formulations.

A simulated soil moisture based drought analysis for the United States

[1] Droughts have severe economic, environmental and social impacts. Timely determination of the current level of drought may aid the decision making process in reducing the impacts from drought. In

Plant responses to increasing CO2 reduce estimates of climate impacts on drought severity

The water savings that plants experience under high CO2 conditions compensate for much of the effect of warmer temperatures, keeping the amount of water on land, on average, higher than the authors would predict with common drought metrics, and with a different spatial pattern.

Use of a standardized runoff index for characterizing hydrologic drought

Many current metrics of drought are derived solely from analyses of climate variables such as precipitation and temperature. Drought is clearly a consequence of climate anomalies, as well as of human

Application of relative drought indices in assessing climate-change impacts on drought conditions in Czechia

The common versions (referred to as self-calibrated here) of the Standardized Precipitation Index (SPI) and the Palmer Drought Severity Index (PDSI) are calibrated and then applied to the same

An aggregate drought index: Assessing drought severity based on fluctuations in the hydrologic cycle and surface water storage

An aggregate drought index (ADI) has been developed, and evaluated within three diverse climate divisions in California. The ADI comprehensively considers all physical forms of drought