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| Formato: | Artículo científico |
| Lenguaje: | en |
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Universidad Nacional Autónoma de México
2007
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| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=56520204 |
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| _version_ | 1866815557675778048 |
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| author | A. R. Lupo |
| author_facet | A. R. Lupo |
| contents | Interannual and interdecadal variability in the predominant Pacific region SST anomaly patterns and their impact on climate in the mid-Mississippi valley region A. R. Lupo E. P. Kelsey D. K. Weitlich J. E. Woolard I. I. Mokhov P. E. Guinan F. A. Akyüz Biología El Niño climate climate variations Interannual variations sea surface temperatures Previous research has demonstrated that Pacific Region SSTs and SST anomalies can be separated into sevengeneral synoptic classifications (clusters) (A-G). Clusters B and G (C, D, and F) [A and E] were shown tobe generally representative of La Niña (El Niño) [neutral] type SST distributions. Further, an analysis of theSST patterns in 1955-1993 demonstrated that clusters A-D were prominent in 1955-1977, while types E andF dominated the later period. Type G clusters were comparatively rare, but occurred during both periods. Inretrospect, this shift during 1977 corresponds roughly with a change in phase of the Pacific Decadal Oscillation(PDO). After updating the analysis to include the 1994 to 2005 period, there was a correspondingchange in the predominant SSTs associated with a change in phase of the PDO during 1999 and 2000. Theresults show that SST patterns did evolve from predominantly E and F-type anomalies in 1994 to A, B, Dand G-type anomalies through 2005. Thus, these results suggest that A through D-type (C, E, and F-type)SST clusters are characteristic of the negative (positive) phase of the PDO. Also, using a modified techniquefor generating phase diagrams, it is shown that there are interannual and interdecadal variations in the mid-Mississippi region monthly mean surface temperature and precipitation records that can be associated withthe ENSO and PDO. Additionally, an analysis was performed to see if there was any statistical associationbetween temperature and precipitation anomalies in the mid-Mississippi region and prolonged SST regimes.B, D and G anomalies were associated with warmer-than-normal conditions, while C and E type anomaliestended to be associated with cooler-than-normal conditions across the region. C, D, F, and G anomalies wereassociated with drier than normal conditions 2007 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56520204 en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.2 Vol.20 |
| format | Artículo científico |
| id | redalyc_56520204 |
| language | en |
| publishDate | 2007 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Interannual and interdecadal variability in the predominant Pacific region SST anomaly patterns and their impact on climate in the mid-Mississippi valley region A. R. Lupo Biología El Niño climate climate variations Interannual variations sea surface temperatures Interannual and interdecadal variability in the predominant Pacific region SST anomaly patterns and their impact on climate in the mid-Mississippi valley region A. R. Lupo E. P. Kelsey D. K. Weitlich J. E. Woolard I. I. Mokhov P. E. Guinan F. A. Akyüz Biología El Niño climate climate variations Interannual variations sea surface temperatures Previous research has demonstrated that Pacific Region SSTs and SST anomalies can be separated into sevengeneral synoptic classifications (clusters) (A-G). Clusters B and G (C, D, and F) [A and E] were shown tobe generally representative of La Niña (El Niño) [neutral] type SST distributions. Further, an analysis of theSST patterns in 1955-1993 demonstrated that clusters A-D were prominent in 1955-1977, while types E andF dominated the later period. Type G clusters were comparatively rare, but occurred during both periods. Inretrospect, this shift during 1977 corresponds roughly with a change in phase of the Pacific Decadal Oscillation(PDO). After updating the analysis to include the 1994 to 2005 period, there was a correspondingchange in the predominant SSTs associated with a change in phase of the PDO during 1999 and 2000. Theresults show that SST patterns did evolve from predominantly E and F-type anomalies in 1994 to A, B, Dand G-type anomalies through 2005. Thus, these results suggest that A through D-type (C, E, and F-type)SST clusters are characteristic of the negative (positive) phase of the PDO. Also, using a modified techniquefor generating phase diagrams, it is shown that there are interannual and interdecadal variations in the mid-Mississippi region monthly mean surface temperature and precipitation records that can be associated withthe ENSO and PDO. Additionally, an analysis was performed to see if there was any statistical associationbetween temperature and precipitation anomalies in the mid-Mississippi region and prolonged SST regimes.B, D and G anomalies were associated with warmer-than-normal conditions, while C and E type anomaliestended to be associated with cooler-than-normal conditions across the region. C, D, F, and G anomalies wereassociated with drier than normal conditions 2007 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56520204 en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.2 Vol.20 |
| title | Interannual and interdecadal variability in the predominant Pacific region SST anomaly patterns and their impact on climate in the mid-Mississippi valley region |
| topic | Biología El Niño climate climate variations Interannual variations sea surface temperatures |
| url | https://www.redalyc.org/articulo.oa?id=56520204 |