Abstract
This paper highlights the relationship between precipitation variability at the sub-regional level in the Southwest United States and the SOI and PDO climate teleconnection indices during the period 1950-2000. Statistical correlations at α = 0.05 and 0.01 levels are calculated for fall, winter, and spring precipitation in the Southwest, and contemporaneous and antecedent seasonal SOI and PDO index values. A strong SOI-winter precipitation signal is seen to progress across Arizona and New Mexico from southwest to northeast over a three-season lagged period. The PDO also exhibits a strong relationship with winter and spring precipitation in New Mexico; however, the PDO is not well correlated with precipitation in Arizona. The results underscore the non-uniform spatio-temporal relationships of the SOI and PDO indices as they relate to the precipitation regime of the Southwest, and provide a framework for future diagnostic analyses of these relationships.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 0-8 |
| Number of pages | 9 |
| Journal | Atmospheric Science Letters |
| Volume | 3 |
| Issue number | 2-4 |
| DOIs | |
| State | Published - 2002 |
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Keywords
- GIS
- PDO
- Precipitation
- SOI
- Southwest United States
- Synoptic climatology
ASJC Scopus subject areas
- Atmospheric Science
Cite this
Sub-regional seasonal precipitation linkages to SOI and PDO in the Southwest United States. / Brown, David P.; Comrie, Andrew.
In: Atmospheric Science Letters, Vol. 3, No. 2-4, 2002, p. 0-8.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Sub-regional seasonal precipitation linkages to SOI and PDO in the Southwest United States
AU - Brown, David P.
AU - Comrie, Andrew
PY - 2002
Y1 - 2002
N2 - This paper highlights the relationship between precipitation variability at the sub-regional level in the Southwest United States and the SOI and PDO climate teleconnection indices during the period 1950-2000. Statistical correlations at α = 0.05 and 0.01 levels are calculated for fall, winter, and spring precipitation in the Southwest, and contemporaneous and antecedent seasonal SOI and PDO index values. A strong SOI-winter precipitation signal is seen to progress across Arizona and New Mexico from southwest to northeast over a three-season lagged period. The PDO also exhibits a strong relationship with winter and spring precipitation in New Mexico; however, the PDO is not well correlated with precipitation in Arizona. The results underscore the non-uniform spatio-temporal relationships of the SOI and PDO indices as they relate to the precipitation regime of the Southwest, and provide a framework for future diagnostic analyses of these relationships.
AB - This paper highlights the relationship between precipitation variability at the sub-regional level in the Southwest United States and the SOI and PDO climate teleconnection indices during the period 1950-2000. Statistical correlations at α = 0.05 and 0.01 levels are calculated for fall, winter, and spring precipitation in the Southwest, and contemporaneous and antecedent seasonal SOI and PDO index values. A strong SOI-winter precipitation signal is seen to progress across Arizona and New Mexico from southwest to northeast over a three-season lagged period. The PDO also exhibits a strong relationship with winter and spring precipitation in New Mexico; however, the PDO is not well correlated with precipitation in Arizona. The results underscore the non-uniform spatio-temporal relationships of the SOI and PDO indices as they relate to the precipitation regime of the Southwest, and provide a framework for future diagnostic analyses of these relationships.
KW - GIS
KW - PDO
KW - Precipitation
KW - SOI
KW - Southwest United States
KW - Synoptic climatology
UR - http://www.scopus.com/inward/record.url?scp=4143063705&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=4143063705&partnerID=8YFLogxK
U2 - 10.1006/asle.2002.0057
DO - 10.1006/asle.2002.0057
M3 - Article
VL - 3
SP - 0
EP - 8
JO - Atmospheric Science Letters
JF - Atmospheric Science Letters
SN - 1530-261X
IS - 2-4
ER -