scholarly journals The Sabine block, Gulf of Mexico: Promontory on the North American margin?: COMMENT

Geology ◽  
2018 ◽  
Vol 46 (4) ◽  
pp. e440-e440
Author(s):  
Harm J.A. Van Avendonk ◽  
Ian W.D. Dalziel
Keyword(s):  
Gulf Of Mexico ◽  
North American ◽  
The North

Record of the North American southwest monsoon from Gulf of Mexico sediment cores

Geology ◽  
2005 ◽  
Vol 33 (3) ◽  
pp. 209 ◽  
Author(s):  
R.Z. Poore ◽  
M.J. Pavich ◽  
H.D. Grissino-Mayer
Keyword(s):  
Gulf Of Mexico ◽  
North American ◽  
Sediment Cores ◽  
Southwest Monsoon ◽  
American Southwest ◽  
The North ◽  
North American Southwest

scholarly journals The Sabine block, Gulf of Mexico: Promontory on the North American margin?: REPLY

Geology ◽  
2018 ◽  
Vol 46 (4) ◽  
pp. e441-e441
Author(s):  
Peter D. Clift ◽  
Paul Heinrich ◽  
Dennis Dunn ◽  
Andrew Jacobus ◽  
Jerzy Blusztajn
Keyword(s):  
Gulf Of Mexico ◽  
North American ◽  
The North

scholarly journals The Sabine block, Gulf of Mexico: Promontory on the North American margin?

Geology ◽  
2017 ◽  
Vol 46 (1) ◽  
pp. 15-18 ◽  
Author(s):  
Peter D. Clift ◽  
Paul Heinrich ◽  
Dennis Dunn ◽  
Andrew Jacobus ◽  
Jerzy Blusztajn
Keyword(s):  
Gulf Of Mexico ◽  
North American ◽  
The North

Spanish Sea: The Gulf of Mexico in the North American Discovery, 1500-1685.

1986 ◽  
Vol 66 (3) ◽  
pp. 592
Author(s):  
Eugene Lyon ◽  
Robert S. Weddle
Keyword(s):  
Gulf Of Mexico ◽  
North American ◽  
The North

scholarly journals On the origin of moisture related to synoptic-scale rainfall events for the North American Monsoon System

2018 ◽  
Author(s):  
Paulina Ordoñez ◽  
Raquel Nieto ◽  
Yolande L. Serra ◽  
Luis Gimeno ◽  
Pedro Ribera ◽  
...  
Keyword(s):  
Water Vapor ◽  
Gulf Of Mexico ◽  
North American ◽  
Gulf Of California ◽  
Caribbean Sea ◽  
North American Monsoon ◽  
Synoptic Scale ◽  
Rainfall Events ◽  
The North ◽  
The Caribbean

Abstract. This work examines the origin of atmospheric water vapor arriving to the North American Monsoon (NAM) region over a 34-yr period (1981–2014) by using a Lagrangian diagnosis method. This methodology computes budgets of evaporation minus precipitation by calculating changes in the specific humidity of thousands of air particles advected into the study area by the observed winds. During the NAM wet season, on average the recycling process is the main water vapor source, followed by the supply of moisture from the Gulf of California. However, the water vapor transport that generates synoptic-scale rainfall comes primarily from the Caribbean Sea, the Gulf of Mexico and terrestrial eastern Mexico. An additional moisture source over the southwestern US is also identified in association with synoptic rainfall events over the NAM region. A high (low) moisture supply from the Caribbean Sea and the Gulf of Mexico from 4 to 6 days before precipitation events is responsible for high (low) rainfall intensity on synoptic scales during the monsoon peak. Westward propagating mid to upper level inverted troughs (IVs) seem to favor these water vapor fluxes. A 200 % increase in the moisture flux from the Caribbean Sea is related to the occurrence of heavy precipitation in the NAM area, accompanied by a decrease in water vapor advection from the Gulf of California.

Decadal Variation of Rainfall Seasonality in the North American Monsoon Region and Its Potential Causes

2012 ◽  
Vol 25 (12) ◽  
pp. 4258-4274 ◽  
Author(s):  
Paola A. Arias ◽  
Rong Fu ◽  
Kingtse C. Mo
Keyword(s):  
United States ◽  
Gulf Of Mexico ◽  
North American ◽  
Southeastern United States ◽  
Atmospheric Stability ◽  
Cyclonic Circulation ◽  
North American Monsoon ◽  
Monsoon Region ◽  
The North ◽  
Anomalous Cyclonic Circulation

Abstract This study shows that the North American monsoon system’s (NAMS) strength, onset, and retreat over northwestern Mexico exhibit multidecadal variations during the period 1948–2009. Two dry regimes, associated with late onsets, early retreats, and weaker rainfall rates, occurred in 1948–70 and 1991–2005, whereas a strong regime, associated with early onsets, late retreats, and stronger rainfall rates, occurred in 1971–90. A recovery of the monsoon strength was observed after 2005. This multidecadal variation is linked to the sea surface temperature anomalies’ (SSTAs) variability, which is a combination of the Atlantic multidecadal oscillation (AMO) and the warming SST trends. These SST modes appear to cause an anomalous cyclonic circulation and enhanced rainfall over the southeastern United States and the Gulf of Mexico, which in turn increases the atmospheric stability over the monsoon region. However, these SST modes cannot fully explain the circulation and rainfall anomalies observed during the early-retreat monsoons. An expansion of the North Atlantic surface high (NASH) in recent decades also contributes to the anomalous circulation associated with the early retreats of the NAMS. A northwestward expansion of the NASH further enhances the anomalous cyclonic circulation and rainfall over the southeastern United States and the Gulf of Mexico. Its associated northwestward shift of the subtropical jets over the western United States enhances subsidence over the NAMS region. The combined effects of the AMO, the warming trends, and the NASH expansion on atmospheric circulation contribute to a stronger and more persistent earlier retreat during the recent dry regime (1991–2005), while the earlier dry regime (1948–70) appears to be only influenced by the positive phase of the AMO.

"TRACHOMA AMONG THE NORTH AMERICAN INDIANS"

JAMA ◽  
1926 ◽  
Vol 86 (13) ◽  
pp. 970
Author(s):  
L. Webster Fox
Keyword(s):  
American Indians ◽  
North American ◽  
North American Indians ◽  
The North
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