Andreas Hamann
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View article: A high-resolution database of historical and future climate for Africa developed with deep neural networks
A high-resolution database of historical and future climate for Africa developed with deep neural networks Open
View article: Short‐ and Long‐Term Growth Response to Multiple Drought Episodes: Evidence of Genetic Adaptation in a Conifer Species
Short‐ and Long‐Term Growth Response to Multiple Drought Episodes: Evidence of Genetic Adaptation in a Conifer Species Open
Drought tolerance of tree species is a concern in the context of climate change, and tree ring analyses can be used to assess past growth response(s), to drought events. In the current study, we applied this approach to 1281 individuals wi…
View article: Monthly High‐Resolution Historical Climate Data for North America Since 1901
Monthly High‐Resolution Historical Climate Data for North America Since 1901 Open
Interpolated grids of historical climate variables are widely used in climate change impact and adaptation research. Here, we contribute monthly historical time series grids since 1901 for our data product ClimateNA , which integrates hist…
View article: Interannual and spatial variations in acid-soluble trace elements in snow: comparison with the mineralogy of dusts from open pit bitumen mining
Interannual and spatial variations in acid-soluble trace elements in snow: comparison with the mineralogy of dusts from open pit bitumen mining Open
There is ongoing concern about trace element (TE) emissions to the global environment from the dusts generated by open pit mining of coal, iron ore, stone quarries, and aggregate extraction. However, the chemical composition and acid solub…
View article: Validation of global precipitation time series products against tree ring records and remotely sensed vegetation greenness
Validation of global precipitation time series products against tree ring records and remotely sensed vegetation greenness Open
Global interpolated climate products are widely used in ecological research to investigate biosphere-climate interactions and to track ecological response to climate variability and climate change. In turn, biological data could also be us…
View article: Carbon sequestration potential of eight economically important tree species in Northeast China under climate change
Carbon sequestration potential of eight economically important tree species in Northeast China under climate change Open
The carbon sequestration potential of forest ecosystems is expected to play a crucial role in mitigating global warming, depending on how climate change will affect tree growth under various local environmental conditions. Here, we investi…
View article: Habitat Loss and Biotic Velocity Response to Climate Change for Alpine Plant Species in Atlantic Oceanic Islands
Habitat Loss and Biotic Velocity Response to Climate Change for Alpine Plant Species in Atlantic Oceanic Islands Open
Climate change may shift species outside of their current climatic tolerances, which can be problematic for oceanic islands with limited options for species migration. Their alpine habitats, which represent islands within islands, are a sp…
View article: A Record-Setting 2021 Heat Wave in Western Canada Had a Significant Temporary Impact on Greenness of the World’s Largest Protected Temperate Rainforest
A Record-Setting 2021 Heat Wave in Western Canada Had a Significant Temporary Impact on Greenness of the World’s Largest Protected Temperate Rainforest Open
Extreme climate anomalies are expected to become more frequent under climate change, and rare extreme events, such as the 2021 western North American heat wave, provide an opportunity for comparative empirical analysis of ecosystem resilie…
View article: Threading the white spruce needle: hydraulic foliar adaptive traits stitch a story of diffusion trade-offs between growth maintenance, drought resistance, and needle water uptake
Threading the white spruce needle: hydraulic foliar adaptive traits stitch a story of diffusion trade-offs between growth maintenance, drought resistance, and needle water uptake Open
Although evidence of the incidence of foliar water uptake has previously been documented in white spruce (Picea glauca), its eco-physiological importance remains unclear. Our aim was to evaluate the ecological significance of functional di…
View article: Validation of global precipitation time series products against tree ring records and remotely sensed vegetation greenness - Dataset and R scripts
Validation of global precipitation time series products against tree ring records and remotely sensed vegetation greenness - Dataset and R scripts Open
The files in this collection include (1) EVI data (area under the curve) aggregated to 5km from MODIS collection MCD12Q2 v006 used for validation of climate data; (2) Climate data for seven global climate data products corresponding to EVI…
View article: Validating remotely sensed land surface phenology with leaf out records from a citizen science network
Validating remotely sensed land surface phenology with leaf out records from a citizen science network Open
Vegetation phenology indices derived from multispectral remote sensing data are used to estimate primary productivity, track impacts of climate change and predict fire seasons. Such indices may, however, lack accuracy due to effects of sno…
View article: Small‐bodied fish species from the western United States will be under severe water stress by 2040
Small‐bodied fish species from the western United States will be under severe water stress by 2040 Open
Human need to appropriate freshwater in combination with climate change has intensified the rapid decline in freshwater biodiversity. Based on 216 currently imperiled freshwater species in the United States, the Southwest, and the Rocky Mo…
View article: Climatic limiting factors of North American ecosystems: a remote-sensing based vulnerability analysis
Climatic limiting factors of North American ecosystems: a remote-sensing based vulnerability analysis Open
Remote-sensing based vulnerability assessments to climate change are a research priority of critical importance for landscape-scale efforts to prioritize conservation and management of ecosystems. Limiting climatic factors can serve as a p…
View article: Identifying Western North American Tree Populations Vulnerable to Drought under Observed and Projected Climate Change
Identifying Western North American Tree Populations Vulnerable to Drought under Observed and Projected Climate Change Open
Global climate change has affected forest health and productivity. A highly visible, direct climate impact is dieback caused by drought periods in moisture-limited forest ecosystems. Here, we have used a climate moisture index (CMI), which…
View article: Competitive Hierarchy Processes Support Mixed Species Regeneration in Strip-Cuts in the British Columbia Interior
Competitive Hierarchy Processes Support Mixed Species Regeneration in Strip-Cuts in the British Columbia Interior Open
Competitive exclusion can lead to a loss of species diversity within small forest gaps. Thus, it poses a potential concern for mixed species regeneration following strip-cut harvesting in the species rich interior moist forests of British …
View article: A CMIP6 ensemble for downscaled monthly climate normals over North America
A CMIP6 ensemble for downscaled monthly climate normals over North America Open
Use of downscaled global climate model projections is expanding rapidly as climate change vulnerability assessments and adaptation planning become mainstream in many sectors. Many climate change impact analyses use climate model projection…
View article: Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations
Assisted migration poleward rather than upward in elevation minimizes frost risks in plantations Open
View article: ClimateEU, scale-free climate normals, historical time series, and future projections for Europe
ClimateEU, scale-free climate normals, historical time series, and future projections for Europe Open
Interpolated climate data have become essential for regional or local climate change impact assessments and the development of climate change adaptation strategies. Here, we contribute an accessible, comprehensive database of interpolated …
View article: Weather Types Affect Rain Microstructure: Implications for Estimating Rain Rate
Weather Types Affect Rain Microstructure: Implications for Estimating Rain Rate Open
Quantitative precipitation estimation (QPE) through remote sensing has to take rain microstructure into consideration, because it influences the relationship between radar reflectivity Z and rain intensity R. For this reason, separate equa…
View article: Chilling and Forcing From Cut Twigs—How to Simplify Phenological Experiments for Citizen Science
Chilling and Forcing From Cut Twigs—How to Simplify Phenological Experiments for Citizen Science Open
Low-cost phenological experiments with cut twigs are increasingly used to study bud development in response to spring warming and photoperiod. However, a broader variety of species needs to be tackled and in particular the influence of ins…
View article: Estimation of the F2 generation segregation variance and relationships among growth, frost damage, and bud break in coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) wide-crosses
Estimation of the F2 generation segregation variance and relationships among growth, frost damage, and bud break in coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) wide-crosses Open
View article: Publisher Correction: Northern forest tree populations are physiologically maladapted to drought
Publisher Correction: Northern forest tree populations are physiologically maladapted to drought Open
View article: Genetic parameters of growth and adaptive traits in aspen (Populus tremuloides): Implications for tree breeding in a warming world
Genetic parameters of growth and adaptive traits in aspen (Populus tremuloides): Implications for tree breeding in a warming world Open
Aspen (Populus tremuloides Michx) is a widespread commercial forest tree of high economic importance in western Canada and has been subject to tree improvement efforts over the past two decades. Such improvement programs rely on accurate e…
View article: Xylem Anomalies as Indicators of Maladaptation to Climate in Forest Trees: Implications for Assisted Migration
Xylem Anomalies as Indicators of Maladaptation to Climate in Forest Trees: Implications for Assisted Migration Open
Xylem anomalies that are caused by unusual climate events have long been used to aid cross-dating in tree ring research. Here, we analyzed a range of xylem anomalies in a 39-year-old common garden experiment of white spruce (Picea glauc…
View article: A cross‐checked global monthly weather station database for precipitation covering the period 1901–2010
A cross‐checked global monthly weather station database for precipitation covering the period 1901–2010 Open
Comprehensive monthly weather station databases are the foundation for many gridded climate data products, and they are widely used to characterize regional climate conditions, track climate change and research the impact of climate on nat…
View article: Grids 1km, MPI AOGCM, RCP 4.5, 2050s, Bioclim
Grids 1km, MPI AOGCM, RCP 4.5, 2050s, Bioclim Open
Gridded data at 1km resolution, MPI AOGCM, RCP 4.5, 2050s projections, bioclimatic variables. Unzip the archive with 7-zip.org.
View article: Grids 1km, HadGem2 AOGCM, RCP 8.5, 2020s, Monthly
Grids 1km, HadGem2 AOGCM, RCP 8.5, 2020s, Monthly Open
Gridded data at 1km resolution, HadGem2 AOGCM, RCP 8.5, 2020s projections, monthly variables Tmin01-12 Tmax01-12 Tave01-12 Prec01-12. Unzip the archive with 7-zip.org.
View article: Grids 1km, CanESM2 AOGCM, RCP 4.5, 2020s, Monthly
Grids 1km, CanESM2 AOGCM, RCP 4.5, 2020s, Monthly Open
Gridded data at 1km resolution, CanESM2 AOGCM, RCP 4.5, 2020s projections, monthly variables Tmin01-12 Tmax01-12 Tave01-12 Prec01-12. Unzip the archive with 7-zip.org.
View article: Grids 1km, HadGem2 AOGCM, RCP 8.5, 2020s, Bioclim
Grids 1km, HadGem2 AOGCM, RCP 8.5, 2020s, Bioclim Open
Gridded data at 1km resolution, HadGem2 AOGCM, RCP 8.5, 2020s projections, bioclimatic variables. Unzip the archive with 7-zip.org.
View article: Grids 2.5km, Ensemble 15 AOGCMs, RCP 8.5, 2050s, Monthly
Grids 2.5km, Ensemble 15 AOGCMs, RCP 8.5, 2050s, Monthly Open
Gridded data at 2.5km resolution, Ensemble projections of 15 AOGCMs, RCP 8.5, 2050s projections, monthly variables Tmin01-12 Tmax01-12 Tave01-12 Prec01-12