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Covarying Hydroclimate Patterns between Monsoonal Asia and North America over the Past 600 Years

Fang, K. Y.; Chen, Deliang; Li, J. B. and Seppa, H. (2014) In Journal of Climate 27(21). p.8017-8033
Abstract
Proxy data with large spatial coverage spanning to the preindustrial era not only provide invaluable material to investigate hydroclimate changes in different regions but also enable studies on temporal changes in the teleconnections between these regions. Applying the singular value decomposition (SVD) method to tree-ring-based field reconstructions of the Palmer drought severity index (PDSI) over monsoonal Asia (MA) and North America (NA) from 1404 to 2005, the dominant covarying pattern between the two regions is identified. This pattern is represented by the teleconnection between the dipole pattern of southern-northern latitudinal MA and the dipole of southwest NA (SWNA)-northwest NA (NWNA), which accounts for 59.6% of the total... (More)
Proxy data with large spatial coverage spanning to the preindustrial era not only provide invaluable material to investigate hydroclimate changes in different regions but also enable studies on temporal changes in the teleconnections between these regions. Applying the singular value decomposition (SVD) method to tree-ring-based field reconstructions of the Palmer drought severity index (PDSI) over monsoonal Asia (MA) and North America (NA) from 1404 to 2005, the dominant covarying pattern between the two regions is identified. This pattern is represented by the teleconnection between the dipole pattern of southern-northern latitudinal MA and the dipole of southwest NA (SWNA)-northwest NA (NWNA), which accounts for 59.6% of the total covariance. Its dominated by an antiphase low MA and SWNA teleconnection, driven by the El Nino-Southern Oscillation (ENSO), and is most significant at an interannual time scale. This teleconnection is strengthened (weakened) in periods of increased (decreased) solar forcing and high (low) temperature, which is associated with intensified (weakened) ENSO variability. Additional forcing by SST anomalies in the Indian and western Pacific Oceans appears to be important too. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
SEA-SURFACE TEMPERATURES, DROUGHT SEVERITY INDEX, UNITED-STATES, REANALYSIS PROJECT, MAUNDER MINIMUM, EL-NINO, CLIMATE, SUMMER, PRECIPITATION, PACIFIC, Meteorology & Atmospheric Sciences
in
Journal of Climate
volume
27
issue
21
pages
8017 - 8033
publisher
American Meteorological Society
external identifiers
  • scopus:84916239697
ISSN
1520-0442
DOI
10.1175/jcli-d-13-00364.1
project
MERGE
language
English
LU publication?
no
id
c4fe1dd3-44d6-4f17-9ca5-b0e87364111b (old id 7515664)
date added to LUP
2015-07-08 14:40:06
date last changed
2017-09-17 08:26:00
@article{c4fe1dd3-44d6-4f17-9ca5-b0e87364111b,
  abstract     = {Proxy data with large spatial coverage spanning to the preindustrial era not only provide invaluable material to investigate hydroclimate changes in different regions but also enable studies on temporal changes in the teleconnections between these regions. Applying the singular value decomposition (SVD) method to tree-ring-based field reconstructions of the Palmer drought severity index (PDSI) over monsoonal Asia (MA) and North America (NA) from 1404 to 2005, the dominant covarying pattern between the two regions is identified. This pattern is represented by the teleconnection between the dipole pattern of southern-northern latitudinal MA and the dipole of southwest NA (SWNA)-northwest NA (NWNA), which accounts for 59.6% of the total covariance. Its dominated by an antiphase low MA and SWNA teleconnection, driven by the El Nino-Southern Oscillation (ENSO), and is most significant at an interannual time scale. This teleconnection is strengthened (weakened) in periods of increased (decreased) solar forcing and high (low) temperature, which is associated with intensified (weakened) ENSO variability. Additional forcing by SST anomalies in the Indian and western Pacific Oceans appears to be important too.},
  author       = {Fang, K. Y. and Chen, Deliang and Li, J. B. and Seppa, H.},
  issn         = {1520-0442},
  keyword      = {SEA-SURFACE TEMPERATURES,DROUGHT SEVERITY INDEX,UNITED-STATES,REANALYSIS PROJECT,MAUNDER MINIMUM,EL-NINO,CLIMATE,SUMMER,PRECIPITATION,PACIFIC,Meteorology & Atmospheric Sciences},
  language     = {eng},
  number       = {21},
  pages        = {8017--8033},
  publisher    = {American Meteorological Society},
  series       = {Journal of Climate},
  title        = {Covarying Hydroclimate Patterns between Monsoonal Asia and North America over the Past 600 Years},
  url          = {http://dx.doi.org/10.1175/jcli-d-13-00364.1},
  volume       = {27},
  year         = {2014},
}