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Cleaveland, Malcolm K.; Stahle, David W.; Therrell, Matthew D.; Villanueva‐Díaz, José; Burns, Barney T.

doi:10.1023/a:1024835630188

Cited by 134 publications

(48 citation statements)

References 35 publications

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“…This relatively warm episode in the late 16th century is recorded as one of the most important droughts during the last 500 years in northwest Mexico (ref. 22 and references therein), a region where currently arid climates are dominant, and as a time of historical deadly epidemics in central Mexico (23,24). The data from Lago Verde strongly suggest that during the LIA lake levels and vegetation at Los Tuxtlas were responding to solar forcing and provide further evidence that solar activity is an important element controlling decadal to centennial scale climatic variability in the tropics (6) and in general over the North Atlantic region (2,19).…”

Section: Discussionmentioning

confidence: 90%

Tracing the effects of the Little Ice Age in the tropical lowlands of eastern Mesoamerica

Lozano‐García¹,

Caballero

Ortega

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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The causes of late-Holocene centennial to millennial scale climatic variability and the impact that such variability had on tropical ecosystems are still poorly understood. Here, we present a highresolution, multiproxy record from lowland eastern Mesoamerica, studied to reconstruct climate and vegetation history during the last 2,000 years, in particular to evaluate the response of tropical vegetation to the cooling event of the Little Ice Age (LIA). Our data provide evidence that the densest tropical forest cover and the deepest lake of the last two millennia were coeval with the LIA, with two deep lake phases that follow the Spö rer and Maunder minima in solar activity. The high tropical pollen accumulation rates limit LIA's winter cooling to a maximum of 2°C. Tropical vegetation expansion during the LIA is best explained by a reduction in the extent of the dry season as a consequence of increased meridional flow leading to higher winter precipitation. These results highlight the importance of seasonal responses to climatic variability, a factor that could be of relevance when evaluating the impact of recent climate change.climate variability ͉ Late Holocene ͉ Mexico ͉ seasonality ͉ tropical ecosystems T he Little Ice Age (LIA) (1350-1850 A.D.) has been identified as one of the most important climatic oscillations of the late Holocene and the last of several centennial to millennial scale Holocene cooling events centered over the North Atlantic (1-4). Low-latitude cooling during the LIA is evident from tropical glacier advances (5, 6), and reduced sea-surface temperatures in the Caribbean (7-9). Dry LIA conditions in the Caribbean are relatively well documented and explained by a change in the position of the Intertropical Convergence Zone (ITCZ) (10, 11), but little is known about the impact that this climatic event had on the lowland tropical ecosystems of the Americas. Lago Verde, near the coast of the Gulf of Mexico (Fig. 1), is a highly sensitive record of recent climate change (12,13) where the response of the tropical vegetation and the lake system to the LIA cooling can be clearly traced, without any significant human impact. Multiproxy data from this lake show that in this tropical region the LIA is recorded by the deepest lake level and the densest forest cover of the last two millennia. In this article, we present arguments evaluating the role of solar forcing as an important element explaining climatic variability in the tropics and the North Atlantic region. We also discuss the role of regional moisture balance as a condition for the expression of regional precipitation trends, and, finally, we present an argument about the importance that changes in the seasonality of precipitation can have over the Gulf of Mexico coastal region, mitigating the dry LIA trend recorded in some areas of the Caribbean. Study SiteThis study is based mainly on pollen, charcoal particles, and diatom analyses on the sediment record from Lago Verde, a small, closed-basin lake at 200 m above sea level, on the outskirts of ...

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Section: Discussionmentioning

confidence: 90%

Tracing the effects of the Little Ice Age in the tropical lowlands of eastern Mesoamerica

Lozano‐García¹,

Caballero

Ortega

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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“…1), there is a significant link between the movement of the ITCZ and ENSO state of the climate. This is thought to be true on interannual (Clement, 1999) to millennial timescales (Cane, 2005). On decadal to centennial timescales, proxy (Haug et al, 2001;Hodell et al, 2005;Sachs et al, 2009;Rustic et al, 2015) and modelling (Broccoli et al, 2006) evidence points to a potential NH temperature forcing on the ITCZ, causing it to shift southwards in response to cooler NH temperatures.…”

Section: Interactions With Other Climatic Phenomenamentioning

confidence: 99%

Was the Little Ice Age more or less El Niño-like than the Medieval Climate Anomaly? Evidence from hydrological and temperature proxy data

2017

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Abstract. The El Niño-Southern Oscillation (ENSO) is the most important source of global climate variability on interannual timescales and has substantial environmental and socio-economic consequences. However, it is unclear how it interacts with large-scale climate states over longer (decadal to centennial) timescales. The instrumental ENSO record is too short for analysing long-term trends and variability and climate models are unable to accurately simulate past ENSO states. Proxy data are used to extend the record, but different proxy sources have produced dissimilar reconstructions of long-term ENSO-like climate change, with some evidence for a temperature-precipitation divergence in ENSO-like climate over the past millennium, in particular during the Medieval Climate Anomaly (MCA; AD ∼ 800-1300) and the Little Ice Age (LIA; AD ∼ 1400-1850). This throws into question the stability of the modern ENSO system and its links to the global climate, which has implications for future projections. Here we use a new statistical approach using weighting based on empirical orthogonal function (EOF) to create two new large-scale reconstructions of ENSOlike climate change derived independently from precipitation proxies and temperature proxies. The method is developed and validated using model-derived pseudo-proxy experiments that address the effects of proxy dating error, resolution, and noise to improve uncertainty estimations. We find no evidence that temperature and precipitation disagree over the ENSO-like state over the past millennium, but neither do they agree strongly. There is no statistically significant difference between the MCA and the LIA in either reconstruction. However, the temperature reconstruction suffers from a lack of high-quality proxy records located in ENSO-sensitive regions, which limits its ability to capture the large-scale ENSO signal. Further expansion of the palaeo-database and improvements to instrumental, satellite, and model representations of ENSO are needed to fully resolve the discrepancies found among proxy records and establish the long-term stability of this important mode of climatic variability.

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“…Lo anterior demuestra la influencia de la lluvia invernal sobre el crecimiento radial de P. douglasiana. La respuesta del crecimiento de coníferas a la lluvia invernal se ha discutido ampliamente en diversos estudios paleoclimáticos (Cerano et al, , 2011a(Cerano et al, , 2012Cleaveland, Stahle, Therrell, Villanueva, & Burns, 2003;Díaz et al, 2002;Stahle & Cleaveland, 1993;Villanueva et al, 2009). La similitud observada entre el IAA y la precipitación (enero-mayo) en el periodo 1961-1996 (Figura 2C) indica que P. douglasiana tiene potencial para reconstruir la precipitación en la RBSM.…”

Section: Relación íNdice Del Ancho De Anillo-precipitación Instrumentalunclassified

“…This demonstrates the influence of winter rainfall on root growth in P. douglasiana. The growth response of conifers to winter rainfall has been widely discussed in various paleoclimatic studies (Cerano et al, , 2011a(Cerano et al, , 2012Cleaveland, Stahle, Therrell, Villanueva, & Burns, 2003;Díaz et al, 2002;Stahle & Cleaveland, 1993;Villanueva et al, 2009). The similarity observed between the RWI and precipitation (January-May) in the period 1961-1996 ( Figure 2C) indicates that P. douglasiana has potential for reconstructing precipitation in the SMBR.…”

Section: Ring Width Index-instrumental Precipitation Relationshipmentioning

confidence: 99%

“…The drought was noteworthy for its area, as it was reported in much of the Mexican republic (Cerano et al, 2011b;Cleaveland et al, 2003;Díaz et (social y económico), ya que provocó hambruna generalizada y emigración del campo a la ciudad, incluso hacia Estados Unidos de América (Florescano, 1980;García et al, 2003). La sequía destacó por su extensión, pues se reportó en gran parte de la república mexicana (Cerano et al, 2011b;Cleaveland et al, 2003;Díaz et al, 2002;Therrell et al, 2006;Villanueva et al, 2009), con lo cual evidenció que este tipo de fenómenos modulan el clima a gran escala.…”

Section: Analysis Of Reconstructed Precipitation Variabilityunclassified

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RECONSTRUCCIÓN DE PRECIPITACIÓN INVIERNO-PRIMAVERA CON ANILLOS ANUALES DE Pinus douglasiana EN LA RESERVA DE LA BIOSFERA SIERRA DE MANANTLÁN, JALISCO

Cerano‐Paredes

Méndez-González

Amaro-Sánchez

et al. 2013

Rev Cha Se Cie For y del Amb

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Se reconstruyó la precipitación invierno-primavera de 219 años (1792-2010) de la Reserva de la Biosfera Sierra de Manantlán (RBSM), Jalisco, México, empleando los anillos anuales de Pinus douglasiana (Mtz.) como “proxy”. La sequía de mediados del siglo XX (1941-1963) fue la más severa del periodo estudiado. El índice multivariado de El Niño Oscilación del Sur (ENSO; 1959-2010) y el índice de ancho del anillo de P. douglasiana mostraron correlación significativa (r = 0.4542; P < 0.05) de los meses de enero-junio, con mayor correlación en los meses de enero (r = 0.4337; P < 0.0001) y marzo (r = 0.4310; P < 0.0001). Las teleconexiones de ENSO en la región varían a través del tiempo; de enero a junio, los eventos El Niño están asociados con precipitaciones mayores que el promedio, mientras que los eventos La Niña muestran lo contrario.

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Untitled

Cited by 134 publications

References 35 publications

Tracing the effects of the Little Ice Age in the tropical lowlands of eastern Mesoamerica

Tracing the effects of the Little Ice Age in the tropical lowlands of eastern Mesoamerica

Was the Little Ice Age more or less El Niño-like than the Medieval Climate Anomaly? Evidence from hydrological and temperature proxy data

RECONSTRUCCIÓN DE PRECIPITACIÓN INVIERNO-PRIMAVERA CON ANILLOS ANUALES DE Pinus douglasiana EN LA RESERVA DE LA BIOSFERA SIERRA DE MANANTLÁN, JALISCO

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