A5071118992- Geology and Paleoclimatology Research
- Tree-ring climate responses
- Archaeology and ancient environmental studies
- Plant Water Relations and Carbon Dynamics
- Pleistocene-Era Hominins and Archaeology
- Forest Management and Policy
- Economic and Environmental Valuation
- Conservation, Biodiversity, and Resource Management
- Marine and coastal plant biology
- Ocean Acidification Effects and Responses
- Remote Sensing and LiDAR Applications
- Geological formations and processes
- Forest ecology and management
- Coral and Marine Ecosystems Studies
- Forest Ecology and Biodiversity Studies
- Land Use and Ecosystem Services
- Geological and Geophysical Studies Worldwide
- Archaeological and Geological Studies
- Ancient and Medieval Archaeology Studies
- Scientific Research and Discoveries
- Astro and Planetary Science
- Wood Treatment and Properties
- Hydrology and Watershed Management Studies
- Cultural Heritage Materials Analysis
- Landslides and related hazards
GFZ Helmholtz Centre for Geosciences
2017-2025
Impact Technology Development (United States)
2022
University of Arizona
2020
Freie Universität Berlin
2018-2020
Bath Spa University
2020
Institut de l'Information Scientifique et Technique
2020
University of Waterloo
2015
ABSTRACT Advances in accelerator mass spectrometry have resulted an unprecedented amount of new high-precision radiocarbon ( 14 C) -dates, some which will redefine the international C calibration curves (IntCal and SHCal). Often these datasets are unaccompanied by detailed quality insurances place at laboratory, questioning whether structure is real, a result laboratory variation or measurement-scatter. A handful intercomparison studies attempt to elucidate offsets but may fail identify...
Abstract Protected Areas (PAs) are continuously being established in tropical forests an effort to preserve biodiversity and reduce deforestation. It was recently demonstrated that PAs more effective at reducing forest loss than unprotected control sites across southeast Asia. The voluntary REDD+ scheme offers a new framework for the protection of high deforestation landscapes, jurisdictions, countries backed by international carbon finance. Here we analyzed economic drivers Cambodia...
Past ocean acidification recorded in the geological record facilitates understanding of rates and influences contemporary pCO2 enrichment. Most pH reconstructions are made using boron, however there is some uncertainty associated with vital effects isotopic fractionation. Here we present a new structural proxy for carbonate chemistry; Mg-O bond strength coralline algae. Coralline algae were incubated control (380 μatm pCO2), moderate (750 high (1000 pCO2) conditions 24 months. Raman...
ABSTRACT As the worldwide standard for radiocarbon ( 14 C) dating over past ca. 50,000 years, International Calibration Curve (IntCal) is continuously improving towards higher resolution and replication. Tree-ring-based C measurements provide absolute throughout most of Holocene, although high-precision data are limited Younger Dryas interval farther back in time. Here, we describe dendrochronological characteristics 1448 new dates, between ~11,950 13,160 cal BP, from 13 pines that were...
Abstract Nature-based solutions that use a counterfactual scenario depend heavily on the methodology used to determine business as usual (BAU) case, i.e., “baseline.” Reducing emissions from deforestation and forest degradation (REDD+) projects traditionally set baselines using “reference area” control for estimating BAU in treatment (project) area. While REDD+ market is shifting project-based nested approaches countries increase their efforts meet nationally determined contributions (NDCs)...
Abstract Nearly 13,000 years ago, the warming trend into Holocene was sharply interrupted by a reversal to near glacial conditions. Climatic causes and ecological consequences of Younger Dryas (YD) have been extensively studied, however proxy archives from Mediterranean basin capturing this period are scarce do not provide annual resolution. Here, we report hydroclimatic reconstruction stable isotopes (δ 18 O, δ 13 C) in subfossil pines southern France. Growing before during transition YD...
Abstract The dynamics of the Late Glacial have been demonstrated by numerous records from Northern Hemisphere and far fewer Southern (SH). SH paleoclimate reveal a general warming trend, interrupted deglaciation pause Antarctic Cold Reversal (ACR; ∼14,700–13,000 cal BP). Here, we present decadal tree‐ring stable isotope chronologies (δ 18 O, δ 13 C) New Zealand (NZ) subfossil kauri trees ( n = 6) covering post‐ACR millennium 13,020 to 11,850 BP. We find distinct, simultaneous downturn...
Abstract Cambodia is facing widespread deforestation due to agriculture, logging, land grabbing, and infrastructure. The implementation of REDD+ (Reducing Emissions from Deforestation Forest Degradation) projects has become a key strategy protect at-risk forests using the sale verified emission reductions as financing; generated by reducing forest loss against counterfactual baseline scenarios. We test series ex-post assessment methodologies on three Cambodian two geospatial datasets (one...
Abstract The implementation of REDD+ (Reducing Emissions from Deforestation and Forest Degradation) projects has become a key Nature Based Solutions (NBS) strategy to protect at-risk forests using the sale verified emission reductions (carbon credits) as financing, generated by reducing forest loss against counterfactual baseline scenarios. Controversy over reasonableness such scenarios thrown this nascent market mechanism into disarray. While new technical approaches baseline-setting that...
<p>The Younger Dryas stadial (YD) was a return to glacial-like conditions in the North Atlantic region that interrupted deglacial warming around 12900 cal BP (before 1950 AD). Terrestrial and marine records suggest this event initiated by interruption of deep-water formation arising from American freshwater runoff, but causes millennia-long duration remain unclear. To investigate solar activity, possible YD driver, we exploit cosmic production signals tree-ring radiocarbon...
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