The Mexican Monsoon

Douglas, Michael W.; Maddox, Robert A.; Howard, Kenneth W.; Reyes, Sergio

doi:10.1175/1520-0442(1993)006<1665:tmm>2.0.co;2

Cited by 611 publications

(357 citation statements)

References 12 publications

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“…The source of moisture fuelling the warm season precipitation in the region is the subtropical Eastern Pacific/Gulf of California (e.g. Douglas et al 1993;Adams & Comrie 1997;Wright et al 2001). Moisture enters the region in surges lasting for many days or weeks, resulting in broad-scale changes in atmospheric humidity.…”

Section: Discussionmentioning

confidence: 99%

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Wright

Leavitt

2005

Plant Cell & Environment

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Section: Discussionmentioning

confidence: 99%

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Wright

Leavitt

2005

Plant Cell & Environment

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“…E-mail: gochis@rap.ucar.edu † The National Center for Atmospheric Research is sponsored by the National Science Foundation climate (cf Tang and Reiter, 1984;Adams and Comrie, 1997;Barlow et al, 1998;Higgins et al, 2003) and readers should refer to these for a more general discussion.] The region encompassing the Sierra Madre Occidental throughout western México has emerged as a locus of convective activity for the NAM (cf Mosino and Garcia, 1974;Douglas et al, 1993;Reyes et al, 1994;Comrie and Glenn, 1998;Hu andFeng 2002, Gutzler, 2004;. Here, frequent convective precipitation, though exhibiting marked interannual variability, is a dominant driver of the annual hydrologic cycle (Gochis et al, 2006a).…”

Section: Introductionmentioning

confidence: 99%

Correlations between sea‐surface temperatures and warm season streamflow in northwest Mexico

Gochis

Brito‐Castillo

Shuttleworth

2006

Intl Journal of Climatology

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Abstract:Previous hydroclimatological analysis of the North American Monsoon (NAM) region of northwest México revealed significant sub-regions of coherence in seasonal precipitation and streamflow. In this work, interannual variations in regionalized streamflow and rainfall-runoff relationships are explored. Modulation of the monsoon hydroclimatology by large-scale forcing mechanisms such as tropical, North Pacific, and Caribbean Sea-surface temperature perturbations results in nonlinear responses in seasonal runoff that varies by region. Analyses reveal that the El Niño-Southern Oscillation (ENSO) exerts a modest but statistically significant influence on NAM streamflow. Different sea-surface temperature and sea-level pressure indices exhibit markedly different lag-correlation structures in different NAM streamflow regions and these relationships vary significantly according to the decadal scale sea-surface temperature (SST) variability in the North Pacific. The structure of correlation patterns between eastern Pacific SST and regionalized NAM streamflow anomalies complicates the application of common ENSO indices as streamflow predictors. The occurrence of ENSO also has a significant impact on regional runoff fractions and on the partitioning of streamflow between the summer and winter seasons. The summer ENSO influence is explained, in part, by changes in the lower tropospheric pressure and wind fields, which result in modest increases in atmospheric moisture over the streamflow regions during La Niña episodes versus El Niño episodes. The results suggest that improved monitoring and prediction of ENSO variability, through careful development of eastern Pacific SST indices in the pre-monsoon period should provide useful guidance for seasonal forecasts of regional monsoon streamflow.

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“…Much of the precipitation in the southwestern U.S. and northwestern Mexico occurs between July and September [Douglas et al, 1993]. The North American Monsoon System (NAMS) is the source of much of this precipitation (Figure l a).…”

Section: Introductionmentioning

confidence: 99%

The influence of soil moisture anomalies on variability of the North American Monsoon System

Small

2001

Geophysical Research Letters

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Abstract. We examine the influence of land-atmosphere interactions, as moderated by soil moisture anomalies, on variability of the North American Monsoon System (NAMS). Sensitivity experiments, in which soil moisture was prescribed to field capacity, were completed with the MM5 mesoscale model linked to the OSU land surface scheme. Our results demonstrate that the NAMS precipitation response to soil moisture forcing depends critically on the location of anomalous surface conditions. Wet soil in the southern Rocky Mountains (SRM) during July, which could result from the melt of an above-normal snowpack, inhibits precipitation in the NAMS region. This is consistent with the observed negative correlation between SRM spring snowcover and NAMS summer precipitation [Gutzler and Preston, 1997]. In contrast, wet soil in the NAMS region enhances July precipitation within that arearea positive soil moisturerainfall feedback exists. Our findings must be tested with experiments that incorporate anomalies constrained by regional-scale soil moisture observations.

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The Mexican Monsoon

Cited by 611 publications

References 12 publications

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Correlations between sea‐surface temperatures and warm season streamflow in northwest Mexico

The influence of soil moisture anomalies on variability of the North American Monsoon System

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The Mexican Monsoon

Cited by 611 publications

References 12 publications

Needle cell elongation and maturation timing derived from pine needle cellulose δ18O

Needle cell elongation and maturation timing derived from pine needle cellulose δ18O

Correlations between sea‐surface temperatures and warm season streamflow in northwest Mexico

The influence of soil moisture anomalies on variability of the North American Monsoon System

Contact Info

Product

Resources

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Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O

Needle cell elongation and maturation timing derived from pine needle cellulose δ¹⁸O