scholarly journals Principal components-based regionalization of precipitation regimes across the southwest United States and Northern Mexico, with an application to monsoon precipitation variability

1998 ◽  
Vol 10 ◽  
pp. 201-215 ◽  
Author(s):  
AC Comrie ◽  
EC Glenn
Keyword(s):  
United States ◽  
Principal Components ◽  
Precipitation Variability ◽  
Monsoon Precipitation ◽  
Northern Mexico ◽  
Southwest United States ◽  
Precipitation Regimes

scholarly journals Interdecadal Seesaw of Precipitation Variability between North China and the Southwest United States

2019 ◽  
Vol 32 (10) ◽  
pp. 2951-2968 ◽  
Author(s):  
Qing Yang ◽  
Zhuguo Ma ◽  
Peili Wu ◽  
Nicholas P. Klingaman ◽  
Lixia Zhang
Keyword(s):  
United States ◽  
North Pacific ◽  
Large Scale ◽  
North China ◽  
Atlantic Multidecadal Oscillation ◽  
Precipitation Variability ◽  
Circulation Anomaly ◽  
Potential Predictability ◽  
Southwest United States ◽  
Rainfall Anomalies

Abstract This paper reports a consistent seesaw relationship between interdecadal precipitation variability over North China and the Southwest United States, which can be found in observations and simulations with several models. Idealized model simulations suggest the seesaw could be mainly driven by the interdecadal Pacific oscillation (IPO), through a large-scale circulation anomaly occupying the entire northern North Pacific, while the Atlantic multidecadal oscillation (AMO) contributes oppositely and less. Modulation of precipitation by the IPO tends to be intensified when the AMO is in the opposite phase, but weakened when the AMO is in the same phase. The warm IPO phase is associated with an anomalous cyclone over the northern North Pacific; consequently, anomalous southwesterly winds bring more moisture and rainfall to the Southwest United States, while northwesterly wind anomalies prevail over North China with negative rainfall anomalies. The east–west seesaw of rainfall anomalies reverses sign when the circulation anomaly becomes anticyclonic during the cold IPO phase. The IPO-related tropical SST anomalies affect the meridional temperature gradient over the North Pacific and adjacent regions and the mean meridional circulation. In the northern North Pacific, the atmospheric response to IPO forcing imposes an equivalent barotropic structure throughout the troposphere. An important implication from this study is the potential predictability of drought-related water stresses over these arid and semiarid regions, with the progress of our understanding and prediction of the IPO and AMO.

Climate change and the potential expansion of buffelgrass (Cenchrus ciliaris L., Poaceae) in biotic communities of Southwest United States and northern Mexico

2019 ◽  
Vol 21 (11) ◽  
pp. 3335-3347 ◽  
Author(s):  
Fábio Suzart de Albuquerque ◽  
Miguel Ángel Macías-Rodríguez ◽  
Alberto Búrquez ◽  
Yaiyr Astudillo-Scalia
Keyword(s):  
Climate Change ◽  
United States ◽  
Cenchrus Ciliaris ◽  
Northern Mexico ◽  
Southwest United States

scholarly journals Comparing Twentieth- and Twenty-First-Century Patterns of Interannual Precipitation Variability over the Western United States and Northern Mexico*

2012 ◽  
Vol 13 (1) ◽  
pp. 366-378 ◽  
Author(s):  
Tyler W. Ruff ◽  
Yochanan Kushnir ◽  
Richard Seager
Keyword(s):  
United States ◽  
Twentieth Century ◽  
Interannual Variability ◽  
Climate Models ◽  
Precipitation Variability ◽  
First Century ◽  
Western United States ◽  
Spatial Structures ◽  
Northern Mexico ◽  
Twenty First Century

Abstract The ability of coupled climate models to simulate the patterns of interannual precipitation variability over the western half of the United States and northern Mexico is investigated by applying principal component analysis to observations and model output. Global Precipitation Climatology Centre (GPCC) observations are compared to the pooled twentieth-century warm- and cold-season precipitation averages simulated by five coupled global climate models included in the Intergovernmental Panel on Climate Change Fourth Assessment Report. The pooled model spatial structures (EOFs) closely match those of the GPCC observations for both halves of the year. Additionally, the twenty-first-century model pooled EOFs are almost identical in spatial extent and amplitude to their twentieth-century counterparts. Thus, the spatial characteristics of large-scale precipitation variability in the western United States are not projected to change in the twenty-first century. When global observed and modeled seasonally averaged sea surface temperature anomalies are correlated with the time series corresponding to the three leading EOFs to discern sources of each mode of precipitation variability, a pattern reminiscent of El Niño is found to be the only significant association. The spatial structures of variability also appear independent of the model-predicted precipitation trend over the twenty-first century, indicating that the mechanisms responsible for the trend are different from those associated with interannual variability. The results of this study lend confidence in the pooled model predictions of seasonal precipitation patterns, and they suggest that future changes will primarily result from the contribution of the mean trend over which statistically stationary interannual variability is superimposed.

scholarly journals “TICRAT” International Workshops: 26 Years Disseminating Sustainable Traditional Techniques for the Conservation of Earthen Architecture

2020 ◽  
pp. 309-314
Author(s):  
Francisco Uviña Contreras ◽  
Luis Fernando Guerrero
Keyword(s):  
United States ◽  
Rural Communities ◽  
Building Materials ◽  
International Workshop ◽  
Theoretical Knowledge ◽  
Urban Centers ◽  
Northern Mexico ◽  
Southwest United States ◽  
Earthen Architecture

The building traditions of the Southwest United States and Northern Mexico have been successfully passed on from generation to generation, but have recently been threatened by the development of new, modern materials and technologies, as well as an undervaluing of traditional earthen building materials and a loss of knowledge in the use of these historic techniques. The Taller Internacional de Conservación y Restauración de Arquitectura de Tierra (TICRAT) was created to disseminate these techniques, mainly lime and adobe, and at least slow down the ongoing loss of knowledge. This international workshop gave rise to a collective participatory program promoting practical and theoretical knowledge on the best techniques to be applied both in modest vernacular and larger restoration projects. These workshops soon spread to many rural communities and urban centers in this region.

“The Greatest Nation on Earth”

2017 ◽  
Vol 86 (1) ◽  
pp. 50-83 ◽  
Author(s):  
Sarah K.M. Rodriguez
Keyword(s):  
United States ◽  
Natural Resources ◽  
Federal Government ◽  
Manifest Destiny ◽  
The United States ◽  
Northern Mexico ◽  
Texas Revolution

Between 1820 and 1827 approximately 1,800 U.S. citizens immigrated to northern Mexico as part of that country’s empresario program, in which the federal government granted foreigners land if they promised to develop and secure the region. Historians have long argued that these settlers, traditionally seen as the vanguard of Manifest Destiny, were attracted to Mexico for its cheap land and rich natural resources. Such interpretations have lent a tone of inevitability to events like the Texas Revolution. This article argues that the early members of these groups were attracted to Mexico for chiefly political reasons. At a time when the United States appeared to be turning away from its commitment to a weak federal government, Mexico was establishing itself on a constitution that insured local sovereignty and autonomy. Thus, the Texas Revolution was far from the result of two irreconcilable peoples and cultures. Moreover, the role that these settlers played in the United States’ acquisition of not just Texas, but ultimately half of Mexico’s national territory, was more paradoxical than inevitable.

Understanding grower perceptions and attitudes on the use of nontraditional water sources, including reclaimed or recycled water, in the semi-arid Southwest United States

2019 ◽  
Vol 170 ◽  
pp. 500-509 ◽  
Author(s):  
Jessica L. Dery ◽  
Channah M. Rock ◽  
Rachel Rosenberg Goldstein ◽  
Cathy Onumajuru ◽  
Natalie Brassill ◽  
...  
Keyword(s):  
United States ◽  
Water Sources ◽  
Recycled Water ◽  
Southwest United States ◽  
Perceptions And Attitudes ◽  
Arid Southwest ◽  
Semi Arid
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