IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
Long-term multi-proxy climate reconstructions and dynamics in South America (LOTRED-SA): State of the art and perspectives
Autor/es:
VILLALBA, R.; GROSJEAN, M.; KIEFER, T.
Revista:
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Jena; Año: 2009 vol. 281 p. 175 - 179
ISSN:
0031-0182
Resumen:
High-resolution, multi-proxy climate reconstructions with a representative spatial coverage over the globe
are arguably among the most important tools for the assessment of the responses of the Earth climate to
natural and anthropogenic forcing. Whereas hemispheric or regional multi-proxy reconstructions for the
past 5001000 years are available for Europe and North America, the Southern Hemisphere including South
America has remained largely terra incognita.
In this special issue we present a comprehensive review of previously published and new data sets from a
variety of paleoclimate archives across southern South America (south of ca. 15°S). The underlying
collaborative research initiative started in 2006 under the umbrella of IGBP-PAGES Focus 2 Regional Climate
Dynamics and aimed to (i) collate the large number of disperse paleoclimate data sets from various proxies
for the last ca. 1000 years, and (ii) produce a spatially explicit, highly resolved, multi-proxy climate
reconstruction for southern South America.
The review and research articles in this special issue cover a variety of archives (historical documents, tree
rings, ice cores, glacier fluctuations and lacustrine sediments) and suggest that, at least south of ca. 18°S, the
spatial and temporal coverage of the data is adequate to develop synoptic multi-proxy reconstructions for
the past ca. 400 years. Although additional high-quality proxy records are still needed to resolve the finer
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attention1000 years are available for Europe and North America, the Southern Hemisphere including South
America has remained largely terra incognita.
In this special issue we present a comprehensive review of previously published and new data sets from a
variety of paleoclimate archives across southern South America (south of ca. 15°S). The underlying
collaborative research initiative started in 2006 under the umbrella of IGBP-PAGES Focus 2 Regional Climate
Dynamics and aimed to (i) collate the large number of disperse paleoclimate data sets from various proxies
for the last ca. 1000 years, and (ii) produce a spatially explicit, highly resolved, multi-proxy climate
reconstruction for southern South America.
The review and research articles in this special issue cover a variety of archives (historical documents, tree
rings, ice cores, glacier fluctuations and lacustrine sediments) and suggest that, at least south of ca. 18°S, the
spatial and temporal coverage of the data is adequate to develop synoptic multi-proxy reconstructions for
the past ca. 400 years. Although additional high-quality proxy records are still needed to resolve the finer
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionterra incognita.
In this special issue we present a comprehensive review of previously published and new data sets from a
variety of paleoclimate archives across southern South America (south of ca. 15°S). The underlying
collaborative research initiative started in 2006 under the umbrella of IGBP-PAGES Focus 2 Regional Climate
Dynamics and aimed to (i) collate the large number of disperse paleoclimate data sets from various proxies
for the last ca. 1000 years, and (ii) produce a spatially explicit, highly resolved, multi-proxy climate
reconstruction for southern South America.
The review and research articles in this special issue cover a variety of archives (historical documents, tree
rings, ice cores, glacier fluctuations and lacustrine sediments) and suggest that, at least south of ca. 18°S, the
spatial and temporal coverage of the data is adequate to develop synoptic multi-proxy reconstructions for
the past ca. 400 years. Although additional high-quality proxy records are still needed to resolve the finer
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionRegional Climate
Dynamics and aimed to (i) collate the large number of disperse paleoclimate data sets from various proxies
for the last ca. 1000 years, and (ii) produce a spatially explicit, highly resolved, multi-proxy climate
reconstruction for southern South America.
The review and research articles in this special issue cover a variety of archives (historical documents, tree
rings, ice cores, glacier fluctuations and lacustrine sediments) and suggest that, at least south of ca. 18°S, the
spatial and temporal coverage of the data is adequate to develop synoptic multi-proxy reconstructions for
the past ca. 400 years. Although additional high-quality proxy records are still needed to resolve the finer
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attention and aimed to (i) collate the large number of disperse paleoclimate data sets from various proxies
for the last ca. 1000 years, and (ii) produce a spatially explicit, highly resolved, multi-proxy climate
reconstruction for southern South America.
The review and research articles in this special issue cover a variety of archives (historical documents, tree
rings, ice cores, glacier fluctuations and lacustrine sediments) and suggest that, at least south of ca. 18°S, the
spatial and temporal coverage of the data is adequate to develop synoptic multi-proxy reconstructions for
the past ca. 400 years. Although additional high-quality proxy records are still needed to resolve the finer
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionfluctuations and lacustrine sediments) and suggest that, at least south of ca. 18°S, the
spatial and temporal coverage of the data is adequate to develop synoptic multi-proxy reconstructions for
the past ca. 400 years. Although additional high-quality proxy records are still needed to resolve the finer
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionfiner
temporal and spatial structure of past climate variations, the currently available data do provide a consistent
picture of climate fluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionfluctuations at a large scale.
We have identified two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionfied two major directions for future research: (i) a dedicated effort to build a comprehensive,
quality-tested, and homogenized set of climate data during the (early) instrumental period in order to
calibrate proxy data series, to test and extend reanalysis data sets, and to explore the multi-decadal
variability of synoptic-scale atmospheric features, and (ii) expansion of the database of robust wellcalibrated
paleoclimate data series of adequate quality, temporal resolution and spatial representation;
currently, this is the bottleneck for further improvements of the reconstructions. Existing older data sets
should be updated to include the most recent years. While well-calibrated tree-ring archives and
documentary data have restrictions in terms of spatial coverage and/or the length of the data series,
calibration and quantification of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attentionfication of proxy series from ice cores, glacier fluctuations, lake sediments and
vegetation records are of utmost concern and require greatest attention