Klaus Keller
Biographic Data
| ID | 3707210 |
|---|---|
| NAME | Klaus Keller |
| GIVEN NAMES | Klaus |
| FAMILY NAME | Keller |
| SIGNATURE | KELLER K |
| AFFILIATIONS | Pennsylvania State University |
| ORCID | 0000-0002-5451-8687 |
| VERIFIED | Yes |
| TOTAL WORKS | 17 |
| TOTAL CITATIONS | 9 |
| AUTHOR COUNT | 17 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1972 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 2 |
Seizing the policy opportunities for health- and equity-improving energy decisions
Developing more useful equity measurements for flood-risk management
Balancing multiple forest management objectives under climate change in central Wisconsin, U.S.A
Forest managers must balance multiple objectives and consider tradeoffs when developing a management plan. Complex interactions between successional dynamics and natural disturbances make it challenging, especially when decisions play out under the deep and dynamic uncertainties associated with climate change. Here we explored a suite of management strategies to maximize multiple management objectives and minimize tradeoffs under future climate p…
Effects of global climate mitigation on regional air quality and health
Regenerative landscape design
Addressing contemporary environmental and social crises requires solutions-based, systems-level changes. To achieve these changes, transdisciplinary research approaches are needed to align problem framing with solution deployment at landscape scales. However, practical frameworks to guide this work are lacking. Here we propose a new framework to help bridge this gap: regenerative landscape design (RLD). We define RLD as a process for finding patt…
Source decomposition of eddy-covariance CO 2 flux measurements for evaluating a high-resolution urban CO 2 emissions inventory
We present the comparison of source-partitioned CO 2 flux measurements with a high-resolution urban CO 2 emissions inventory (Hestia). Tower-based measurements of CO and 14 C are used to partition net CO 2 flux measurements into fossil and biogenic components. A flux footprint model is used to quantify spatial variation in flux measurements. We compare the daily cycle and spatial structure of Hestia and eddy-covariance derived fossil fuel CO 2 em…
Why Simpler Computer Simulation Models Can Be Epistemically Better for Informing Decisions
For computer simulation models to usefully inform climate risk management, uncertainties in model projections must be explored and characterized. Because doing so requires running the model many times over, and because computing resources are finite, uncertainty assessment is more feasible using models that demand less computer processor time. Such models are generally simpler in the sense of being more idealized, or less realistic. So modelers f…
Evidence for sharp increase in the economic damages of extreme natural disasters
Climate change has increased the frequency and intensity of natural disasters. Does this translate into increased economic damages? To date, empirical assessments of damage trends have been inconclusive. Our study demonstrates a temporal increase in extreme damages, after controlling for a number of factors. We analyze event-level data using quantile regressions to capture patterns in the damage distribution (not just its mean) and find strong ev…
Neglecting model structural uncertainty underestimates upper tails of flood hazard
Coastal flooding drives considerable risks to many communities, but projections of future flood risks are deeply uncertain. The paucity of observations of extreme events often motivates the use of statistical approaches to model the distribution of extreme storm surge events. A key deep uncertainty that is often overlooked is model structural uncertainty. There is currently no strong consensus among experts regarding which class of statistical mo…
Understanding scientists’ computational modeling decisions about climate risk management strategies using values-informed mental models
How effective is albedo modification (solar radiation management geoengineering) in preventing sea-level rise from the Greenland Ice Sheet
Albedo modification (AM) is sometimes characterized as a potential means of avoiding climate threshold responses, including large-scale ice sheet mass loss. Previous work has investigated the effects of AM on total sea-level rise over the present century, as well as AM's ability to reduce longterm (10 3 yr) contributions to sea-level rise from the Greenland Ice Sheet (GIS). These studies have broken new ground, but neglect important feedbacks in …
Many-objective robust decision making for managing an ecosystem with a deeply uncertain threshold response
Singh, R., P. M. Reed, and K. Keller. 2015. Many-objective robust decision making for managing an ecosystem with a deeply uncertain threshold response. Ecology and Society 20(3): 12. https://doi.org/10.5751/ES-07687-200312
Improved moraine age interpretations through explicit matching of geomorphic process models to cosmogenic nuclide measurements from single landforms
The statistical distributions of cosmogenic nuclide measurements from moraine boulders contain previously unused information on moraine ages, and they help determine whether moraine degradation or inheritance is more important on individual moraines. Here, we present a method for extracting this information by fitting geomorphic process models to observed exposure ages from single moraines. We also apply this method to 94 10 Be apparent exposure …
The regrets of procrastination in climate policy
Anthropogenic carbon dioxide (CO2) emissions are projected to impose economic costs due to the associated climate change impacts. Climate change impacts can be reduced by abating CO2 emissions. What would be an economically optimal investment in abating CO2 emissions? Economic models typically suggest that reducing CO2 emissions by roughly ten to twenty per cent relative to business-as-usual would be an economically optimal strategy. The currentl…
Learning and climate change
Learning – i.e., the acquisition of new information that leads to changes in our assessment of uncertainty – plays a prominent role in the international climate policy debate. For example, the view that we should postpone actions until we know more continues to be influential. The latest work on learning and climate change includes new theoretical models, better informed simulations of how learning affects the optimal timing of emissions reductio…
“Vergleichsuntersuchungen an gas-, bad- und ionitrierten Maschinenteilen”
'Vergleichsuntersuchungen an gas-, bad- und ionitrierten Maschinenteilen'
Unter den im Maschinenbau ublichen Verfahren zur Verbesserung tech nologischer Eigenschaften hochbeanspruchter Masohinenelemente wird das Nitrieren von Eisenwerkstoffen mit wachsenden Betriebsanforderun gen mehr und mehr angewendet. Gegenuber normaler Oberflachenhartung durch Martensitbildung weist dieses Verfahren als thermochemische Oberflachenbehandlung Besonderheiten auf, die ihm in vielen Fallen selbst gegenuber der Einsatzhartung den Vorran…
Effects of global climate mitigation on regional air quality and health
Understanding scientists’ computational modeling decisions about climate risk management strategies using values-informed mental models
Why Simpler Computer Simulation Models Can Be Epistemically Better for Informing Decisions
For computer simulation models to usefully inform climate risk management, uncertainties in model projections must be explored and characterized. Because doing so requires running the model many times over, and because computing resources are finite, uncertainty assessment is more feasible using models that demand less computer processor time. Such models are generally simpler in the sense of being more idealized, or less realistic. So modelers f…
Regenerative landscape design
Addressing contemporary environmental and social crises requires solutions-based, systems-level changes. To achieve these changes, transdisciplinary research approaches are needed to align problem framing with solution deployment at landscape scales. However, practical frameworks to guide this work are lacking. Here we propose a new framework to help bridge this gap: regenerative landscape design (RLD). We define RLD as a process for finding patt…
“Vergleichsuntersuchungen an gas-, bad- und ionitrierten Maschinenteilen”
'Vergleichsuntersuchungen an gas-, bad- und ionitrierten Maschinenteilen'
Unter den im Maschinenbau ublichen Verfahren zur Verbesserung tech nologischer Eigenschaften hochbeanspruchter Masohinenelemente wird das Nitrieren von Eisenwerkstoffen mit wachsenden Betriebsanforderun gen mehr und mehr angewendet. Gegenuber normaler Oberflachenhartung durch Martensitbildung weist dieses Verfahren als thermochemische Oberflachenbehandlung Besonderheiten auf, die ihm in vielen Fallen selbst gegenuber der Einsatzhartung den Vorran…
Learning and climate change
Learning – i.e., the acquisition of new information that leads to changes in our assessment of uncertainty – plays a prominent role in the international climate policy debate. For example, the view that we should postpone actions until we know more continues to be influential. The latest work on learning and climate change includes new theoretical models, better informed simulations of how learning affects the optimal timing of emissions reductio…
The regrets of procrastination in climate policy
Anthropogenic carbon dioxide (CO2) emissions are projected to impose economic costs due to the associated climate change impacts. Climate change impacts can be reduced by abating CO2 emissions. What would be an economically optimal investment in abating CO2 emissions? Economic models typically suggest that reducing CO2 emissions by roughly ten to twenty per cent relative to business-as-usual would be an economically optimal strategy. The currentl…
Improved moraine age interpretations through explicit matching of geomorphic process models to cosmogenic nuclide measurements from single landforms
The statistical distributions of cosmogenic nuclide measurements from moraine boulders contain previously unused information on moraine ages, and they help determine whether moraine degradation or inheritance is more important on individual moraines. Here, we present a method for extracting this information by fitting geomorphic process models to observed exposure ages from single moraines. We also apply this method to 94 10 Be apparent exposure …
How effective is albedo modification (solar radiation management geoengineering) in preventing sea-level rise from the Greenland Ice Sheet
Albedo modification (AM) is sometimes characterized as a potential means of avoiding climate threshold responses, including large-scale ice sheet mass loss. Previous work has investigated the effects of AM on total sea-level rise over the present century, as well as AM's ability to reduce longterm (10 3 yr) contributions to sea-level rise from the Greenland Ice Sheet (GIS). These studies have broken new ground, but neglect important feedbacks in …
Many-objective robust decision making for managing an ecosystem with a deeply uncertain threshold response
Singh, R., P. M. Reed, and K. Keller. 2015. Many-objective robust decision making for managing an ecosystem with a deeply uncertain threshold response. Ecology and Society 20(3): 12. https://doi.org/10.5751/ES-07687-200312
Understanding scientists’ computational modeling decisions about climate risk management strategies using values-informed mental models
Neglecting model structural uncertainty underestimates upper tails of flood hazard
Coastal flooding drives considerable risks to many communities, but projections of future flood risks are deeply uncertain. The paucity of observations of extreme events often motivates the use of statistical approaches to model the distribution of extreme storm surge events. A key deep uncertainty that is often overlooked is model structural uncertainty. There is currently no strong consensus among experts regarding which class of statistical mo…
Evidence for sharp increase in the economic damages of extreme natural disasters
Climate change has increased the frequency and intensity of natural disasters. Does this translate into increased economic damages? To date, empirical assessments of damage trends have been inconclusive. Our study demonstrates a temporal increase in extreme damages, after controlling for a number of factors. We analyze event-level data using quantile regressions to capture patterns in the damage distribution (not just its mean) and find strong ev…
Why Simpler Computer Simulation Models Can Be Epistemically Better for Informing Decisions
For computer simulation models to usefully inform climate risk management, uncertainties in model projections must be explored and characterized. Because doing so requires running the model many times over, and because computing resources are finite, uncertainty assessment is more feasible using models that demand less computer processor time. Such models are generally simpler in the sense of being more idealized, or less realistic. So modelers f…
Source decomposition of eddy-covariance CO 2 flux measurements for evaluating a high-resolution urban CO 2 emissions inventory
We present the comparison of source-partitioned CO 2 flux measurements with a high-resolution urban CO 2 emissions inventory (Hestia). Tower-based measurements of CO and 14 C are used to partition net CO 2 flux measurements into fossil and biogenic components. A flux footprint model is used to quantify spatial variation in flux measurements. We compare the daily cycle and spatial structure of Hestia and eddy-covariance derived fossil fuel CO 2 em…
Balancing multiple forest management objectives under climate change in central Wisconsin, U.S.A
Forest managers must balance multiple objectives and consider tradeoffs when developing a management plan. Complex interactions between successional dynamics and natural disturbances make it challenging, especially when decisions play out under the deep and dynamic uncertainties associated with climate change. Here we explored a suite of management strategies to maximize multiple management objectives and minimize tradeoffs under future climate p…
Effects of global climate mitigation on regional air quality and health
Regenerative landscape design
Addressing contemporary environmental and social crises requires solutions-based, systems-level changes. To achieve these changes, transdisciplinary research approaches are needed to align problem framing with solution deployment at landscape scales. However, practical frameworks to guide this work are lacking. Here we propose a new framework to help bridge this gap: regenerative landscape design (RLD). We define RLD as a process for finding patt…
Developing more useful equity measurements for flood-risk management
Seizing the policy opportunities for health- and equity-improving energy decisions
Environmental Science (10 works) · Economics (9 works) · Climate change (7 works) · Ecology (7 works) · Business (5 works) · Environmental resource management (5 works) · Geography (5 works) · Computer Science (4 works) · Natural resource economics (4 works) · Political science (4 works)