Alan D Ziegler
Biographic Data
| ID | 153387 |
|---|---|
| NAME | Alan D Ziegler |
| GIVEN NAMES | Alan D |
| FAMILY NAME | Ziegler |
| SIGNATURE | ZIEGLER A D |
| AFFILIATIONS | National University of Singapore |
| ORCID | 0000-0001-5305-2136 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 295 |
| AUTHOR COUNT | 27 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2000 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 8 |
Hospital Resilience in a Multi-Hazard Era
Hospitals require continuous access to water to sustain essential health services, especially when resources are taxed when drought conditions are compounded with other public health emergencies. In mid-2020, we conducted a rapid assessment of 71 hospitals in northern Thailand to evaluate water use and resilience during the concurrent 2019–2020 drought and the early phase of the COVID-19 pandemic in Thailand. While most hospitals reported adequat…
Canals, Contaminants, and Connections
Emerging and persistent contaminants (EPCs) were detected at high concentrations in Chiang Mai’s Mae Kha Canal, identifying urban waterways as important sources of pollution in the Ping River system in northern Thailand. Maximum levels of metformin (20,000 ng/L), fexofenadine (15,900 ng/L), gabapentin (12,300 ng/L), sucralose (38,000 ng/L), and acesulfame (23,000 ng/L) point to inadequately treated wastewater as a plausible contributor. Downstrea…
Unpacking the black box
Accelerating global mountain forest loss threatens biodiversity hotspots
What drives the change of capacity factor of wind turbine in the United States
The capacity factor (CF) is a vital parameter used to quantify the performance and efficiency of a wind turbine. An increase in generation efficiency leads to higher wind power production, improving the economics within the growing global wind market. In this research, we use a data-driven statistical method to explore the contributions of the three main drivers of CF change: turbine aging, changes in wind speed, and technological improvements. W…
Energy production and water savings from floating solar photovoltaics on global reservoirs
Increases in China’s wind energy production from the recovery of wind speed since 2012
China has realized a 56-fold increase in installed wind capacity, from 5.9 GW in 2007 to 328 GW in 2021. In addition to increasing installed capacity, plans to substantially increase wind energy production for climate change mitigation also depend on future wind speeds, which strongly influences the efficiencies of installed turbines within individual wind farms. A reversal in globally decreasing wind speeds over several decades has been reported…
Influence of urbanization on hourly extreme precipitation over China
The impact of rapid urbanization on the spatiotemporal pattern of short-term extreme precipitation in China remains unclear at the subnational scale. In this study, we present a general framework that measures urbanization-induced variation in hourly extreme wet season precipitation (April–October) from 1985 to 2012, with reference to a dynamic urban–rural station classification based on annual changes in urban extent. We found that urbanization …
Doubling of annual forest carbon loss over the tropics during the early twenty-first century
Previous estimates of tropical forest carbon loss in the twenty-first century using satellite data typically focus on its magnitude, whereas regional loss trajectories and associated drivers are rarely reported. Here we used different high-resolution satellite datasets to show a doubling of gross tropical forest carbon loss worldwide from 0.97 ± 0.16 PgC yr −1 in 2001–2005 to 1.99 ± 0.13 PgC yr −1 in 2015–2019. This increase in carbon loss from f…
Upward expansion and acceleration of forest clearance in the mountains of Southeast Asia
Promoting sustainability education through hands-on approaches
High-spatiotemporal-resolution mapping of global urban change from 1985 to 2015
Untangling the Complexity of Liver Fluke Infection and Cholangiocarcinoma in NE Thailand Through Transdisciplinary Learning
Current trends of rubber plantation expansion may threaten biodiversity and livelihoods
Natural degradation of earthworks, trenches, walls and moats, Northern Thailand
“...........structures of this kind are hidden away securely under the thick overgrowth: thus does nature preserve what man would surely destroy” (from Sumet Jumsai, 1970) We investigate the geometry, age, and history of several enigmatic northern Thailand earthwork entrenchments that are mostly located on hills and could not have held water to form moats. The earthworks are either oval or rectangular in map view; and they typically encircle 0.3-…
De-mythologizing the faculty–postgraduate writing experience in geography
Geography's role in nurturing postgraduate students
In this commentary we encourage thinking about how to effectively nurture postgraduate students in geography. We offer some ideas and strategies for supervisors who mentor postgrads for careers in and beyond the academy. We also consider how supervisor-student relationships can take advantage of geography's interdisciplinarity to develop a well rounded postgraduate experience
Deforestation in the Ayeyarwady Delta and the conservation implications of an internationally-engaged Myanmar
Swidden, rubber and carbon
Comprehensive research in geography
10.1111/area.12021
Trends, drivers and impacts of changes in swidden cultivation in tropical forest-agriculture frontiers
The Rubber Juggernaut
The demise of swidden cultivation in Southeast Asia may have devastating environmental consequences.
Environmental Consequences of the Demise in Swidden Cultivation in Montane Mainland Southeast Asia
Environmental Consequences of the Demise in Swidden Cultivation in Southeast Asia
Consequences of Swidden Transitions for Crop and Fallow Biodiversity in Southeast Asia
Trends, drivers and impacts of changes in swidden cultivation in tropical forest-agriculture frontiers
Environmental Consequences of the Demise in Swidden Cultivation in Southeast Asia
Consequences of Swidden Transitions for Crop and Fallow Biodiversity in Southeast Asia
High-spatiotemporal-resolution mapping of global urban change from 1985 to 2015
Swidden, rubber and carbon
Current trends of rubber plantation expansion may threaten biodiversity and livelihoods
Environmental Consequences of the Demise in Swidden Cultivation in Montane Mainland Southeast Asia
Geography's role in nurturing postgraduate students
In this commentary we encourage thinking about how to effectively nurture postgraduate students in geography. We offer some ideas and strategies for supervisors who mentor postgrads for careers in and beyond the academy. We also consider how supervisor-student relationships can take advantage of geography's interdisciplinarity to develop a well rounded postgraduate experience
Deforestation in the Ayeyarwady Delta and the conservation implications of an internationally-engaged Myanmar
Comprehensive research in geography
10.1111/area.12021
Energy production and water savings from floating solar photovoltaics on global reservoirs
Contemporary changes in open water surface area of Lake Inle, Myanmar
Upward expansion and acceleration of forest clearance in the mountains of Southeast Asia
Promoting sustainability education through hands-on approaches
Natural degradation of earthworks, trenches, walls and moats, Northern Thailand
“...........structures of this kind are hidden away securely under the thick overgrowth: thus does nature preserve what man would surely destroy” (from Sumet Jumsai, 1970) We investigate the geometry, age, and history of several enigmatic northern Thailand earthwork entrenchments that are mostly located on hills and could not have held water to form moats. The earthworks are either oval or rectangular in map view; and they typically encircle 0.3-…
De-mythologizing the faculty–postgraduate writing experience in geography
Latent and Sensible Energy Flux Over Deforested Land Surfaces in the Eastern Amazon and Northern Thailand
Land cover change may impact watershed hydrology and regional climate by altering land‐atmosphere exchanges of energy and water. Conversion of forest to pasture has previously been shown to decrease the rate of evaporation (including transpiration) because of reduced aerodynamic roughness, less canopy rainfall interception and greater canopy resistance during dry periods. However, less is known about the effects of forest replacement land covers …
Contemporary changes in open water surface area of Lake Inle, Myanmar
The Rubber Juggernaut
The demise of swidden cultivation in Southeast Asia may have devastating environmental consequences.
Environmental Consequences of the Demise in Swidden Cultivation in Montane Mainland Southeast Asia
Environmental Consequences of the Demise in Swidden Cultivation in Southeast Asia
Consequences of Swidden Transitions for Crop and Fallow Biodiversity in Southeast Asia
Trends, drivers and impacts of changes in swidden cultivation in tropical forest-agriculture frontiers
Deforestation in the Ayeyarwady Delta and the conservation implications of an internationally-engaged Myanmar
Swidden, rubber and carbon
Comprehensive research in geography
10.1111/area.12021
Current trends of rubber plantation expansion may threaten biodiversity and livelihoods
Natural degradation of earthworks, trenches, walls and moats, Northern Thailand
“...........structures of this kind are hidden away securely under the thick overgrowth: thus does nature preserve what man would surely destroy” (from Sumet Jumsai, 1970) We investigate the geometry, age, and history of several enigmatic northern Thailand earthwork entrenchments that are mostly located on hills and could not have held water to form moats. The earthworks are either oval or rectangular in map view; and they typically encircle 0.3-…
De-mythologizing the faculty–postgraduate writing experience in geography
Geography's role in nurturing postgraduate students
In this commentary we encourage thinking about how to effectively nurture postgraduate students in geography. We offer some ideas and strategies for supervisors who mentor postgrads for careers in and beyond the academy. We also consider how supervisor-student relationships can take advantage of geography's interdisciplinarity to develop a well rounded postgraduate experience
Untangling the Complexity of Liver Fluke Infection and Cholangiocarcinoma in NE Thailand Through Transdisciplinary Learning
High-spatiotemporal-resolution mapping of global urban change from 1985 to 2015
Upward expansion and acceleration of forest clearance in the mountains of Southeast Asia
Promoting sustainability education through hands-on approaches
Increases in China’s wind energy production from the recovery of wind speed since 2012
China has realized a 56-fold increase in installed wind capacity, from 5.9 GW in 2007 to 328 GW in 2021. In addition to increasing installed capacity, plans to substantially increase wind energy production for climate change mitigation also depend on future wind speeds, which strongly influences the efficiencies of installed turbines within individual wind farms. A reversal in globally decreasing wind speeds over several decades has been reported…
Influence of urbanization on hourly extreme precipitation over China
The impact of rapid urbanization on the spatiotemporal pattern of short-term extreme precipitation in China remains unclear at the subnational scale. In this study, we present a general framework that measures urbanization-induced variation in hourly extreme wet season precipitation (April–October) from 1985 to 2012, with reference to a dynamic urban–rural station classification based on annual changes in urban extent. We found that urbanization …
Doubling of annual forest carbon loss over the tropics during the early twenty-first century
Previous estimates of tropical forest carbon loss in the twenty-first century using satellite data typically focus on its magnitude, whereas regional loss trajectories and associated drivers are rarely reported. Here we used different high-resolution satellite datasets to show a doubling of gross tropical forest carbon loss worldwide from 0.97 ± 0.16 PgC yr −1 in 2001–2005 to 1.99 ± 0.13 PgC yr −1 in 2015–2019. This increase in carbon loss from f…
Accelerating global mountain forest loss threatens biodiversity hotspots
What drives the change of capacity factor of wind turbine in the United States
The capacity factor (CF) is a vital parameter used to quantify the performance and efficiency of a wind turbine. An increase in generation efficiency leads to higher wind power production, improving the economics within the growing global wind market. In this research, we use a data-driven statistical method to explore the contributions of the three main drivers of CF change: turbine aging, changes in wind speed, and technological improvements. W…
Energy production and water savings from floating solar photovoltaics on global reservoirs
Hospital Resilience in a Multi-Hazard Era
Hospitals require continuous access to water to sustain essential health services, especially when resources are taxed when drought conditions are compounded with other public health emergencies. In mid-2020, we conducted a rapid assessment of 71 hospitals in northern Thailand to evaluate water use and resilience during the concurrent 2019–2020 drought and the early phase of the COVID-19 pandemic in Thailand. While most hospitals reported adequat…
Environmental Science (18 works) · Geography (18 works) · Ecology (17 works) · Agroforestry (10 works) · Biology (9 works) · Conservation, Biodiversity, and Resource Management (9 works) · Agriculture (8 works) · Geology (6 works) · Oil Palm Production and Sustainability (6 works) · Climate change (5 works)