Search Results

You are looking at 141 - 150 of 1,683 items for :

  • Journal of Hydrometeorology x
  • Refine by Access: All Content x
Clear All
John Roads and Alan Betts

assess the ability of forecast models to estimate the energy and hydrological balances for the Mississippi River basin, using observations of precipitation and runoff as evaluation data. Studies of the GCIP water and energy budgets have been carried out previously by Betts et al. (1998c , 1999) using the ECMWF reanalysis (hereinafter referred to as ERA) and by Roads et al. (1999) using the NCEP–NCAR reanalysis (hereinafter referred to as NRA). Here these disparate efforts are combined and the

Full access
Abayomi A. Abatan, William J. Gutowski Jr., Caspar M. Ammann, Laurna Kaatz, Barbara G. Brown, Lawrence Buja, Randy Bullock, Tressa Fowler, Eric Gilleland, and John Halley Gotway

1. Introduction The southwestern United States, including the upper Colorado River basin (UCRB), is highly vulnerable to regional climatic extremes, such as droughts and pluvials, because of the region’s geographic location and climatological characteristics ( Laird et al. 1996 ; Hidalgo 2004 ). Multiyear droughts and pluvials have severe consequences for the agricultural sector and water resources management, such as for Denver Water, a major water utility in the region. Multiyear to

Full access
Oldrich Rakovec, Rohini Kumar, Juliane Mai, Matthias Cuntz, Stephan Thober, Matthias Zink, Sabine Attinger, David Schäfer, Martin Schrön, and Luis Samaniego

1. Introduction Since the pioneering work of Crawford and Linsley (1966) , the efficiency of computational hydrologic models has been evaluated against streamflow observations that are available at determined locations within a river basin ( Dawdy and Lichty 1968 ; Sorooshian and Dracup 1980 ; Duan et al. 1992 ; Bergström 1995 ; Seibert 2000 ; Hundecha and Bárdossy 2004 ; Troy et al. 2008 ; Yilmaz et al. 2008 ; Samaniego et al. 2010 ; Kumar et al. 2013a ). This kind of continuous in

Full access
Yoshiki Fukutomi, Hiromichi Igarashi, Kooiti Masuda, and Tetsuzo Yasunari

balance over northern Eurasia on interannual timescales is needed to facilitate understanding of physical linkages with not only regional climatic conditions, but also with various climate subsystems. During the past two decades, there has been considerable interest in the hydrological cycle in high-latitude land areas. The primary reason is that the water balance in these high-latitude areas is thought to drive the Arctic climate, as reviewed by Walsh (2000) . For instance in the Mackenzie River

Full access
Rongqian Yang, Michael Ek, and Jesse Meng

necessary to understand the characteristics of water and energy climate and to point out the limitations and issues that still affect the ability to develop adequate budgets. Assessing surface energy and water balances for the Mississippi River basin has been a key objective and a focused region of the past Global Energy and Water Cycle Experiment (GEWEX) Continental Scale International Project (GCIP). Using data from a variety of sources, the basin budgets have been studied extensively, for example, by

Full access
Zhe Li, Dawen Yang, Bing Gao, Yang Jiao, Yang Hong, and Tao Xu

around the world (e.g., Su et al. 2008 ; Li et al. 2009 ; Bitew and Gebremichael 2011 ; Gebregiorgis et al. 2012 ; Yong et al. 2012 ), indicating that there is an increasing potential to use these products in hydrological modeling with continuing upgrades of retrieval algorithms ( Su et al. 2008 ; Yong et al. 2012 ). In the future, it is expected that the recently launched Global Precipitation Measurement (GPM) mission will further improve flood monitoring in medium-to-large river basins

Full access
Munir A. Nayak, Gabriele Villarini, and A. Allen Bradley

; Hou et al. 2014 ) core satellite. Our study focuses on atmospheric rivers (ARs) and rainfall during the IFloodS period. ARs are narrow (less than 400 km in width) and long (1000+ km in length) regions in the lower levels of the troposphere that transport large amounts of water vapor from the tropics and extratropics ( Newell et al. 1992 ; Newell and Zhu 1994 ). In extratropical cyclones, ARs generally form in the warm sector in the presence of low-level jets (LLJs) ahead of cold fronts. Because

Full access
Yongkang Xue, Jinjun Ji, Shufen Sun, Guoxiong Wu, K-M. Lau, Isabelle Poccard, Hyun-Suk Kang, Renhe Zhang, John C. Schaake, Jian Yun Zhang, and Yanjun Jiao

; Lettenmaier et al. 1994 ; Maurer et al. 2002 ). This study investigates the seasonal and interannual runoff variability in China at the continental scale and its relationship with precipitation, sea surface temperature (SST), and El Niño Southern Oscillation (ENSO) using river runoff and precipitation data that we obtained during the past few years. The water cycle in East Asia exhibits very high spatial and temporal variability. Often, the amplitude of the interannual variability can be as large as the

Full access
Gang Zhao, Huilin Gao, and Lan Cuo

practice for evaluating peak flow changes at the river basin scale is to drive hydrologic models using spatially (and temporally) downscaled outputs from GCMs ( Dibike and Coulibaly 2005 ; Ntegeka et al. 2014 ; Tian et al. 2016 ). However, both the downscaling techniques (dynamical or statistical) and the hydrologic models (among which the complexity in the representation of physical processes varies significantly) contribute to additional uncertainties of the simulated peak flows. Previous studies

Full access
Clara Draper and Graham Mills

1. Introduction Arid regions are thought to be particularly sensitive to global climate change and yet the response of the world’s arid regions to future climate changes is not well understood ( Lioubimtseva 2004 ). In the semiarid Murray–Darling River basin in southeast Australia, observations over the last half-century already suggest that rising regional temperatures have increased the severity of droughts ( Nicholls 2004 ). However, the impacts of increasing CO 2 and/or global climate

Full access