A5016136671- Hydrology and Drought Analysis
- Hydrology and Watershed Management Studies
- Climate variability and models
- Flood Risk Assessment and Management
- Water resources management and optimization
- Meteorological Phenomena and Simulations
- Water-Energy-Food Nexus Studies
- Climate change impacts on agriculture
- Hydrology and Sediment Transport Processes
- Hydrological Forecasting Using AI
- Precipitation Measurement and Analysis
- Tree-ring climate responses
- Tropical and Extratropical Cyclones Research
- Plant Water Relations and Carbon Dynamics
- Geophysics and Gravity Measurements
- Agricultural risk and resilience
- Water Resources and Sustainability
- Land Use and Ecosystem Services
- Landslides and related hazards
- Crop Yield and Soil Fertility
- Urban Transport and Accessibility
- Wind and Air Flow Studies
- Water Quality and Resources Studies
- Environmental Changes in China
- Infrastructure Resilience and Vulnerability Analysis
City University of New York
2016-2025
The Graduate Center, CUNY
2025
City College
2015-2024
City College of New York
2015-2024
National Oceanic and Atmospheric Administration
2021-2023
NOAA Center for Earth System Sciences and Remote Sensing Technologies
2021-2023
Center For Remote Sensing (United States)
2015-2020
Centre de Recherche en Économie et Statistique
2018-2019
Centre for Research in Engineering Surface Technology
2018-2019
Columbia University
2010-2018
Abstract Storage and controlled distribution of water have been key elements a human strategy to overcome the space time variability water, which marked by catastrophic droughts floods throughout course civilization. In United States, peak dam building occurred in mid‐20th century with knowledge limited scientific understanding hydrologic records time. Ecological impacts were considered differently than current legislative regulatory controls would potentially dictate. Additionally, future...
<strong class="journal-contentHeaderColor">Abstract.</strong> Frequency and duration of floods are analyzed using the global flood database Dartmouth Flood Observatory (DFO) to explore evidence trends during 1985â2015 at latitudinal scales. Three classes (i.e., short: 1â7, moderate: 8â20, long: 21 days above) also considered for this analysis. The nonparametric MannâKendall trend analysis is used evaluate three hypotheses addressing potential monotonic in frequency flood,...
Irrigated agriculture is placing increasing pressure on finite freshwater resources, especially in developing countries, where water extraction often unregulated, un-priced and even subsidized. To shift to a more sustainable use of without harming the food security livelihoods hundreds millions smallholders, substantial improvements efficiency will be required. Here, we detailed hydroclimatic agricultural data estimate potential for widespread adoption efficient irrigation technologies halt...
Abstract Six water emergencies have occurred since 1981 for the New York City (NYC) region despite following: 1) its perhumid climate, 2) substantial conservation of 1979, and 3) meteorological data showing little severe or extreme drought 1970. This study reconstructs 472 years moisture availability NYC watershed to place these in long-term hydroclimatic context. Using nested reconstruction techniques, 32 tree-ring chronologies comprised 12 species account up 66.2% average May–August Palmer...
Degradation of freshwater ecosystems and the services they provide is a primary cause increasing water insecurity, raising need for integrated solutions to management. While methods characterizing multi-faceted challenges managing abound, tend emphasize either social or ecological dimensions fall short being truly integrative. This paper suggests that management sustainability systems needs consider linkages between human uses, governance. We present conceptualization resources as part an...
Abstract During the last few decades, global agricultural production has risen and technology enhancement is still contributing to yield growth. However, population growth, water crisis, deforestation, climate change threaten food security. An understanding of variables that caused past changes in crop yields can help improve future prediction models. In this article, we present a comprehensive analysis how they relate different large‐scale regional variables, unified framework. A new...
A key strategy for agriculture to adapt climate change is by switching crops and relocating crop production. We develop an approach estimate the economic potential of reallocation using a Bayesian hierarchical model yields. apply six in United States, show that it outperforms traditional empirical models under cross-validation. The fitted parameters provide evidence considerable existing adaptation across counties. If locations are held constant future, total profits will drop 31%...
Abstract Significant groundwater depletion in regions where grains are procured for public distribution is a primary sustainability challenge India. We identify specific changes the Indian Government’s Procurement & Distribution System as solution lever. Irrigation, using groundwater, facilitated by subsidized electricity, seen vital meeting India’s food security goals. Using over century of daily climate data and recent spatially detailed economic, crop yield, related parameters, we use...
Abstract A hierarchical Bayesian regression model is presented for reconstructing the average summer streamflow at five gauges in Delaware River basin using eight regional tree-ring chronologies. The provides estimates of posterior probability distribution each reconstructed series considering parameter uncertainty. vectors coefficients are modeled as draws from a common multivariate normal with unknown parameters estimated part analysis. This leads to multilevel structure. covariance...
Abstract This study presents a systematic analysis for identifying and attributing trends in the annual frequency of extreme rainfall events across contiguous United States to climate change variability modes. A Bayesian multilevel model is developed 1244 stations simultaneously test null hypothesis no trend verify two alternate hypotheses: can be attributed changes global surface temperature anomalies or combination well-known cyclical modes with varying quasiperiodicities anomalies. The...
Abstract New York City (NYC) faces many challenges in the coming decades due to climate change and its interactions with social vulnerabilities uneven urban development patterns processes. This Panel on Climate Change (NPCC) report contributes Panel's mandate advise city provide timely risk information that can inform flexible equitable adaptation pathways enhance resilience change. presents up‐to‐date scientific as well updated sea level rise projections of record. We also present a new...
Abstract A new indicator of drought‐induced water stress is introduced and applied at the county level in USA. Unlike most existing drought metrics, we directly consider current daily demands renewable supply to estimate potential stress. Water indices developed include Normalized Deficit Cumulated represent multiyear droughts by computing maximum cumulative deficit between demand over study period (1949–2009) Index representing associated with each year. These map storage requirements...
Abstract Our understanding of the full range natural variability in streamflow, including how modern flow compares to past, is poorly understood for Upper Indus Basin because short instrumental gauge records. To help address this challenge, we use Hierarchical Bayesian Regression with partial pooling develop six centuries long (1394–2008 CE) streamflow reconstructions at three gauges (Doyian, Gilgit, and Kachora), concurrently demonstrating that can be used reconstruct records interspersed...
A new approach for developing multimodel streamflow forecasts is presented. The methodology combines from individual models by evaluating their skill, represented rank probability score (RPS), contingent on the predictor state. Using average RPS estimated over chosen neighbors in state space, assigns higher weights a model that has better predictability under similar conditions. We assess performance of proposed algorithm Falls Lake Reservoir Neuse River Basin, North Carolina (NC), combining...
Abstract Seasonal streamflow forecasts contingent on climate information are essential for short-term planning (e.g., water allocation) and setting up contingency measures during extreme years. However, the allocated based issued at beginning of season needs to be revised using updated throughout season. In this study, reservoir inflow downscaled from monthly precipitation ECHAM4.5 forced with “persisted” SSTs were used improve both seasonal intraseasonal allocation October–February Angat...
The focus of NPCC3 is on high-risk events involving extreme temperatures, precipitation, and drought. Current trends are presented using historical climate records high temperature, cold snaps, humidity, precipitation for the New York metropolitan region. geographical span region considered here includes, in addition to City, adjacent sections Jersey such as Newark, City Elizabeth, well other nearby locations Yonkers Long Island. Historical droughts Delaware watershed also examined. Each...
Droughts, resulting from natural variability in supply and increased demand due to urbanization, have severe economic implications on local regional water systems. In the context of short-term (monthly seasonal) management, predicting these variations well advance are essential advocating appropriate conservation measures before onset drought. this study, we utilized 3-month ahead probabilistic multimodel streamflow forecasts developed using climatic information—sea surface temperature...
Key Points Spatially distributed measure of water stress integrates supply and demand Metric assesses risk posed by within year over-year variations in Much the concerns could be alleviated without significant modifications