Droughts have an adverse influence on agriculture, the environment, water supplies, and global economy. The drought risk was computed using integrated prospective approach: hazard, exposure, vulnerability based biophysical socio-economic conditions over Karachi, Pakistan during 2000–2019. Drought hazard map (DHM) created annual Palmer severity Index (PDSI). exposure (DEM) derived population den...

Hydroclimatic extremes such as droughts and floods triggered by human-induced climate change are causing severe damage in the Nile River Basin (NRB). These hydroclimatic not well studied a holistic approach NRB. In this study, Gravity Recovery Climate Experiment (GRACE) mission its Follow on (GRACE-FO) derived indices other standardized computed for developing monitoring evaluation methods of f...

The Amazon River Basin (ARB) plays an essential role in global climate regulation. Recent studies have revealed signs of increasing drought conditions different parts the basin. Although human activities degraded large areas, little work has been done to assess whether prolonged may exacerbate land degradation. Among methods for monitoring degradation, Sustainable Development Goal (SDG) indicat...

Drought severity still remains a serious concern across Sub-Saharan Africa (SSA) due to its destructive impact on multiple sectors of society. In this study, the interannual variability and trends in changes self-calibrating Palmer Severity Index (scPDSI) based Penman–Monteith (scPDSIPM) Thornthwaite (scPDSITH) methods for measuring potential evapotranspiration (PET), precipitation (P), normali...

We characterized fire history and examined climate–fire relationships in dry ponderosa pine (Pinus ponderosa) forests in the Zuni Mountains of northwestern New Mexico. Our findings indicate that the historical wildfire regime for the study area was typified by high-frequency, low-severity surface fires. Climate–wildfire relationships were assessed using both Superposed Epoch Analysis (SEA) and ...

Research on the forcing of drought and pluvial events over North America is dominated by general circulation model experiments that often have operational limitations (e.g., computational expense, ability to simulate relevant processes, etc). We use a statistically based modeling approach to investigate sea surface temperature (SST) forcing of the twentieth century pluvial (1905–1917) and droug...

been reviewed in final form. Permission, as indicated by the signatures and dates given below, is now granted to submit final copies to the College of Graduate Studies for approval. Abstract Changes in streamflow across the western US illustrate a need to better understand how drought indices derived from climate data track streamflow. Three drought metrics, the (SPEI), and Palmer Drought Sever...

Abstract Most Amazonia drought studies have focused on rainfall deficits and their impact on river discharges, while the analysis of other important driver variables, such as temperature and soil moisture, has attracted less attention. Here we try to better understand the spatiotemporal dynamics of Amazonia droughts and associated climate teleconnections as characterized by the Palmer Drought S...