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Climate Leaf Analysis Multivariate Program

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Journal Article
Journal: Paleobiology
Published: 01 July 1997
Paleobiology (1997) 23 (3): 373–390.
... of species in a flora with untoothed leaf margins. The second approach, known as the Climate-Leaf Analysis Multivariate Program, is based on a modern data set that is multivariate. I argue here that the simpler, univariate approach will give paleotemperature estimates at least as precise as the multivariate...
Journal Article
Journal: Paleobiology
Published: 01 January 2000
Paleobiology (2000) 26 (4): 668–688.
... from different regions. Models based on data sets from North America and Japan, namely the Climate-Leaf Analysis Multivariate Program (CLAMP) data set of J. A. Wolfe, and from east Asia produce reasonably accurate estimates of temperature and precipitation, suggesting that the climateleaf morphology...
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Journal Article
Journal: PALAIOS
Published: 01 March 2007
PALAIOS (2007) 22 (2): 212–219.
... at the lamina-petiole junction. All 7 of these characters and only 1 of the 13 asymmetry characters had an association with climate. These characters corresponded to five of the seven broad categories of Wolfe's Climate-Leaf Analysis Multivariate Program shape descriptors, excluding only tooth shape and lobing...
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Journal Article
Journal: Paleobiology
Published: 01 September 2015
Paleobiology (2015) 41 (4): 528–553.
.... Several procedures have been developed that quantify covariation between the relative abundance of plant character states and the states of climate variables as a means of estimating paleoclimate parameters. One of the most widely used of these is the Climate Leaf Analysis Multivariate Program (CLAMP...
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Journal Article
Published: 02 February 2016
Canadian Journal of Earth Sciences (2016) 53 (6): 574–590.
... temperature (CMMT) 3.5–7.9 °C; mean annual precipitation (MAP) 103–157 cm/year. Leaf size analysis estimates MAP at 121 ± 39 cm/year. Estimates from the climate leaf analysis multivariate program corroborate these results, although with a slightly cooler MAT (13.3 ± 2.1 °C). Plants that support...
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Journal Article
Published: 24 July 2019
Canadian Journal of Earth Sciences (2020) 57 (3): 348–365.
... analysis; 14.8 ± 2.1 °C from Climate Leaf Analysis Multivariate Program), with mild winters (cold month mean temperature 3.9 ± 3.4 °C). Paleoclimate was cooler than the upper Paleocene and Eocene members of the Chuckanut Formation. Mean annual precipitation is estimated at ∼140 cm with large uncertainties...
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Series: GSA Special Papers
Published: 01 January 2014
DOI: 10.1130/2014.2503(06)
... temperature (MAT) estimates of ~7–11 °C (5–14 °C including overlapping estimation errors). The Climate Leaf Analysis Multivariate Program (CLAMP) produced a MAT value of 11–12 °C ± 2 °C. Leaf area analysis produced mean annual precipitation (MAP) estimates of 197 cm (+152/−86 cm) and 191 cm (+161/−87 cm...
Journal Article
Published: 19 November 2009
Canadian Journal of Earth Sciences (2009) 46 (11): 811–822.
... on the climate leaf analysis multivariate program, or CLAMP (e.g., Wolfe and Wehr 1991 ; Mustoe and Gannaway 1997 ; Wolfe et al. 1998 ; Dillhoff et al. 2005 ), which provides estimates of growing season precipitation but not mean annual precipitation (MAP). The Okanagan Highlands fossil localities...
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Journal Article
Published: 30 May 2019
Geological Magazine (2020) 157 (10): 1729–1746.
... and hydrological regimes over an average annual cycle at eight locations in NE Russia and northern Alaska. A new high spatial resolution (∼1 km) WorldClim2 calibration of the Climate Leaf Analysis Multivariate Program (CLAMP) yields results similar to, but often slightly warmer than, previous analyses, but also...
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Journal Article
Journal: PALAIOS
Published: 01 October 2005
PALAIOS (2005) 20 (5): 429–438.
...ROBERT A. SPICER; ALEXEI B. HERMAN; ELIZABETH M. KENNEDY Abstract CLAMP (Climate Leaf Analysis Multivariate Program) is a powerful paleoclimate proxy with the ability to yield quantitative data on past temperatures, precipitation, growing season length, and humidity, as well as enthalpy (a property...
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Journal Article
Journal: PALAIOS
Published: 01 March 2014
PALAIOS (2014) 29 (3): 121–128.
... are scarce. Using Climate Leaf Analysis Multivariate Program (CLAMP) and Bioclimatic Analysis (BA) on plant fossils from the mid- to Upper Cretaceous Winton Formation, central-western Queensland, and working within the context of global paleoclimatic reconstructions and the vertebrate fauna from this unit...
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List of dicotyledonous <b>leaf</b> morphotypes (labeled KC001–KC045) identified at...
Published: 24 July 2019
Table 1. List of dicotyledonous leaf morphotypes (labeled KC001–KC045) identified at Kanaka Creek (Paleocene; Vancouver, British Columbia) used for physiognomic analyses (Climate Leaf Analysis Multivariate Program and leaf margin analysis). Note: Where known, current corresponding
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Locality map showing the temperature (red symbols), fossil pollen (yellow c...
Published: 02 February 2021
Maastrichtian (blue bounding box in A). (D) WIB during the early Maastrichtian (green bounding box in A). The positions of relevant dinosaur fossil localities are marked by black circles. Paleogeography modified from Scotese and Wright (2018) and Blakey (2014) . CLAMP—Climate Leaf Analysis Multivariate
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Table 3.  Regression equations referenced in the text. AT refers to arcsine...
Published: 01 January 2002
(mean annual precipitation), and MAT (mean annual temperature). CLAMP (Climate Leaf-Analysis Multivariate Program) data sets may be modified by various authors as shown by inclusion of only those sites having higher than −2°C cold-month mean (CMM) temperature. WHA is the Western Hemisphere-Africa data
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<b>Climate</b> estimates from <b>leaf</b> physiognomy (<b>Climate</b> <b>Leaf</b> <b>Analysis</b> <b>Multivariate</b>...
Published: 24 July 2019
Table 3. Climate estimates from leaf physiognomy (Climate Leaf Analysis Multivariate Program (CLAMP) and leaf area analysis (LAA)) for the Kanaka Creek flora (Paleocene; Vancouver, British Columbia) and other Paleocene floras from the Pacific Northwest and Alberta. Note: Data
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Table  1. Data sets and statistical methods used to estimate <b>climate</b> from l...
Published: 01 January 2000
Table 1. Data sets and statistical methods used to estimate climate from leaf morphology in this study. CLAMP refers to the Climate-Leaf Analysis Multivariate Program data set of Wolfe (1993, 1995). CLAMP 3A refers to the most recent version of the data set, which has percent occurrence data
Journal Article
Journal: Geology
Published: 01 March 2017
Geology (2017) 45 (3): 215–218.
... by floral compositions, we analyzed leaf form. The well-archived leaf fossils in the Liuqu and Qiabulin floras allow the use of the Climate Leaf Analysis Multivariate Program (CLAMP) ( Spicer et al., 2003 ; http://clamp.ibcas.ac.cn ) ( Fig. 3 ; Tables DR3 and DR4), a non-taxonomic multivariate technique...
Journal Article
Journal: PALAIOS
Published: 01 January 2010
PALAIOS (2010) 25 (4): 234–238.
... was different from other regions and showed weak correlation. In addition to these mainly regional studies, the widely used method, CLAMP (Climate Leaf Analysis Multivariate Program), has largely improved our understanding of the relationship between leaf characters and climate ( Wolfe, 1993 ; Spicer et...
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Journal Article
Journal: PALAIOS
Published: 01 June 2011
PALAIOS (2011) 26 (6): 335–345.
... entire margins. Wolfe (1994) performed a leaf physiognomic climate estimate analysis on this collection (Climate Leaf Multivariate Program; CLAMP) and obtained results that indicate wet and warm temperate conditions, corroborating earlier paleoclimatic interpretations. The composite collection...
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Journal Article
Published: 01 October 2007
Reviews in Mineralogy and Geochemistry (2007) 66 (1): 173–193.
.... With these additions, he developed the Climate-Leaf Analysis Multivariate Program (CLAMP) utilizing correspondence analysis ( Wolfe 1993 ) to determine the relationship between climate and leaf shapes and sizes. Others have also employed multivariate regression techniques using the CLAMP data to infer paleoclimate...
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