Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density

Figure 3. Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density. (e) Normalized time serie...

Full description

Bibliographic Details
Main Authors: Buwen Dong, Sutton, Rowan T, Woollings, Tim, Hodges, Kevin
Format: Still Image
Language:unknown
Published: IOP Publishing 2013
Subjects:
Online Access:https://dx.doi.org/10.6084/m9.figshare.1011647
https://iop.figshare.com/articles/figure/_Composite_anomalies_for_a_sea_level_pressure_hPa_b_precipitation_mm_d_sup_1_sup_c_precipitation_wit/1011647
id ftdatacite:10.6084/m9.figshare.1011647
record_format openpolar
spelling ftdatacite:10.6084/m9.figshare.1011647 2023-05-15T17:36:48+02:00 Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density Buwen Dong Sutton, Rowan T Woollings, Tim Hodges, Kevin 2013 https://dx.doi.org/10.6084/m9.figshare.1011647 https://iop.figshare.com/articles/figure/_Composite_anomalies_for_a_sea_level_pressure_hPa_b_precipitation_mm_d_sup_1_sup_c_precipitation_wit/1011647 unknown IOP Publishing Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Environmental Science Image Figure graphic ImageObject 2013 ftdatacite https://doi.org/10.6084/m9.figshare.1011647 2021-11-05T12:55:41Z Figure 3. Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density. (e) Normalized time series precipitation indices averaged in two regions shown in (b). (f) as (e) but for England and Wales precipitation. Thick line in (a)–(d) outlines regions where anomalies are significant at 90% confidence level using the Student t -test. Abstract The summertime variability of the extratropical storm track over the Atlantic sector and its links to European climate have been analysed for the period 1948–2011 using observations and reanalyses. The main results are as follows. (1) The dominant mode of the summer storm track density variability is characterized by a meridional shift of the storm track between two distinct paths and is related to a bimodal distribution in the climatology for this region. It is also closely related to the Summer North Atlantic Oscillation (SNAO). (2) A southward shift is associated with a downstream extension of the storm track and a decrease in blocking frequency over the UK and northwestern Europe. (3) The southward shift is associated with enhanced precipitation over the UK and northwestern Europe and decreased precipitation over southern Europe (contrary to the behaviour in winter). (4) There are strong ocean–atmosphere interactions related to the dominant mode of storm track variability. The atmosphere forces the ocean through anomalous surface fluxes and Ekman currents, but there is also some evidence consistent with an ocean influence on the atmosphere, and that coupled ocean–atmosphere feedbacks might play a role. The ocean influence on the atmosphere may be particularly important on decadal timescales, related to the Atlantic Multidecadal Oscillation (AMO). Still Image North Atlantic North Atlantic oscillation DataCite Metadata Store (German National Library of Science and Technology)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language unknown
topic Environmental Science
spellingShingle Environmental Science
Buwen Dong
Sutton, Rowan T
Woollings, Tim
Hodges, Kevin
Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density
topic_facet Environmental Science
description Figure 3. Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density. (e) Normalized time series precipitation indices averaged in two regions shown in (b). (f) as (e) but for England and Wales precipitation. Thick line in (a)–(d) outlines regions where anomalies are significant at 90% confidence level using the Student t -test. Abstract The summertime variability of the extratropical storm track over the Atlantic sector and its links to European climate have been analysed for the period 1948–2011 using observations and reanalyses. The main results are as follows. (1) The dominant mode of the summer storm track density variability is characterized by a meridional shift of the storm track between two distinct paths and is related to a bimodal distribution in the climatology for this region. It is also closely related to the Summer North Atlantic Oscillation (SNAO). (2) A southward shift is associated with a downstream extension of the storm track and a decrease in blocking frequency over the UK and northwestern Europe. (3) The southward shift is associated with enhanced precipitation over the UK and northwestern Europe and decreased precipitation over southern Europe (contrary to the behaviour in winter). (4) There are strong ocean–atmosphere interactions related to the dominant mode of storm track variability. The atmosphere forces the ocean through anomalous surface fluxes and Ekman currents, but there is also some evidence consistent with an ocean influence on the atmosphere, and that coupled ocean–atmosphere feedbacks might play a role. The ocean influence on the atmosphere may be particularly important on decadal timescales, related to the Atlantic Multidecadal Oscillation (AMO).
format Still Image
author Buwen Dong
Sutton, Rowan T
Woollings, Tim
Hodges, Kevin
author_facet Buwen Dong
Sutton, Rowan T
Woollings, Tim
Hodges, Kevin
author_sort Buwen Dong
title Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density
title_short Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density
title_full Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density
title_fullStr Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density
title_full_unstemmed Composite anomalies for (a) sea level pressure (hPa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in JJA for high minus low PC1 of storm track density
title_sort composite anomalies for (a) sea level pressure (hpa), (b) precipitation (mm d −1 ), (c) precipitation with intensity ranging from 1 to 20 mm d −1 , and (d) rainy days with intensity ranging from 1 to 20 mm d −1 in jja for high minus low pc1 of storm track density
publisher IOP Publishing
publishDate 2013
url https://dx.doi.org/10.6084/m9.figshare.1011647
https://iop.figshare.com/articles/figure/_Composite_anomalies_for_a_sea_level_pressure_hPa_b_precipitation_mm_d_sup_1_sup_c_precipitation_wit/1011647
genre North Atlantic
North Atlantic oscillation
genre_facet North Atlantic
North Atlantic oscillation
op_rights Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
cc-by-4.0
op_rightsnorm CC-BY
op_doi https://doi.org/10.6084/m9.figshare.1011647
_version_ 1766136408572952576