Search Results

You are looking at 71 - 80 of 531 items for :

  • Waves, oceanic x
  • Journal of Hydrometeorology x
  • All content x
Clear All
Robert F. Adler, George J. Huffman, Alfred Chang, Ralph Ferraro, Ping-Ping Xie, John Janowiak, Bruno Rudolf, Udo Schneider, Scott Curtis, David Bolvin, Arnold Gruber, Joel Susskind, Philip Arkin, and Eric Nelkin

oceans are considered. Thus, it seems that the standing waves in the NH help produce larger precipitation values over the oceans there, but the drier landmasses in this latitude zone reduce the total precipitation to slightly below the SH ocean and total values, which are nearly the same because of the relative lack of land in that zone. c. Global totals Table 1 contains the global precipitation totals for the GPCP Version 2, along with those for the two conventional climatologies. For the entire

Full access
Cédric H. David, David R. Maidment, Guo-Yue Niu, Zong-Liang Yang, Florence Habets, and Victor Eijkhout

, especially by the Intergovernmental Panel on Climate Change ( Solomon et al. 2007 ), opens potential studies of the evolution of water resources with global change. Using mapped streams and water bodies in LSMs could benefit the resulting assessment of the impact of global change in water resources by providing estimation of changes at the blue-line level. Furthermore, the use of parallel computing is quite common in regional- to global-scale atmospheric and ocean modeling but comparatively infrequent in

Full access
Ulrike Romatschke and Robert A. Houze Jr.

long lifetimes and propagating aspect has led to speculation ( Houze 2004 ) that these particular offshore systems may be a gravity wave response, of the type described by Mapes et al. (2003) , to the daytime systems over the high terrain. d. Coastal terrain—Continental side The high terrain of the coastal regions affects precipitation systems differently on their landward compared to their oceanic sides. In IWC, many small systems peaking in the afternoon ( Fig. 14b ) are located inland from the

Full access
Michael G. Bosilovich and Jiun-Dar Chern

1. Introduction When analyzing water cycle intensity, regional variations can be significantly different from the global background (e.g., Bosilovich et al. 2005 ). Precipitation over land is a function of both transport of water from the oceans and the evaporation from the land ( Trenberth et al. 2003 ). The water holding capacity of the vegetation and soil limits land evaporation. Therefore, variations of the land evaporation can affect the surface energy budget, planetary boundary layer

Full access
Paul X. Flanagan, Jeffrey B. Basara, Jason C. Furtado, and Xiangming Xiao

composite ( Fig. 4c ) depicts a stronger negative anomaly signal occurring in the southwest extending farther to the northwest over the North Pacific Ocean. To further diagnose the differences in the wave structure for the Pattern years, we investigate the υ ( Fig. 5 ) and u ( Fig. 6 ) anomaly fields. The 250-mb υ wind component anomaly Pattern composite ( Fig. 5a ) exhibits a series of statistically significant (denoted by stippling in Fig. 5 ) couplets across Asia and North America

Full access
Tajdarul H. Syed, James S. Famiglietti, and Don P. Chambers

of paramount importance in assessing changes in the earth system. However, integrated global networks of such observations are plagued by numerous technical, political, and economic challenges. Currently, there exists no comprehensive global network for the monitoring of freshwater discharge into the world oceans ( Alsdorf and Lettenmaier 2003 ; Brakenridge et al. 2005 ). To date, the majority of the reported assessments of global discharge are either based on modeled runoff, climatologies of

Full access
Kazuyuki Saito, Tetsuzo Yasunari, and Kumiko Takata

the Rossby wave pattern generated by the Tibetan orography and the increased diabetic heating ( Rodwell and Hoskins 1996 ), to decrease total rainy-season precipitation by 60 mm in JJA, and the local vapor source by one-third. b. East Asia Figure 13 shows the impact of land surface conditions on the major sources of water vapor precipitates out in east Asia. The Pacific Ocean is the primary source throughout the year regardless of the surface conditions. The comparable contribution from other

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

). Northern Eurasian hydrology is also considered an important factor controlling the Arctic climate (e.g., Peng and Mysak 1993 ; Bowling et al. 2000 ; Serreze et al. 2001a , 2002 ) and that of the neighboring Asian monsoon area (e.g., Yasunari et al. 1991 ; Kripalani and Kulkarni 1999 ). The water from major Eurasian rivers is recognized as an effective source of freshwater flowing into the Arctic Ocean, [see reviews by Bowling et al. (2000) and Carmack (2000) ]. Atmospheric moisture transport

Full access
Ian M. Ferguson, John A. Dracup, Philip B. Duffy, Philip Pegion, and Siegfried Schubert

persistence of extreme events such as droughts and heat waves ( Hong and Kalnay 2000 ; Schubert et al. 2004a ; Fischer et al. 2007 ; Pegion and Kumar 2008 ). Despite numerous studies on the relative contributions of ocean–atmosphere forcing and land–atmosphere feedbacks to the duration and magnitude of individual drought events, the influence of ocean–atmosphere forcing on the long-term stochastic characteristics of precipitation anomalies and drought—as opposed to individual drought events—has not

Full access
Ulrike Romatschke and Robert A. Houze Jr.

cooling over the continent. The spreading over the ocean at night could also be a gravity wave response to the daytime heating over the high coastal terrain ( Mapes et al. 2003 ), but the amplitude of the daytime peak in medium system occurrence is so slight that this possibility seems unlikely. Large systems in the BOB region have a strong diurnal cycle ( Figs. 13e and 16 ). A clear minimum of occurrence of large systems occurs over BOB during the evening and the maximum is reached midday. A

Full access