Skip to main content

Ambarish Karmalkar

thumbnail
Evaluation of Downscaled Climate Modeling Techniques for the Northeast U.S.: A Case Study of Maple Syrup Production
Downscaling is the process of making a coarse-scale global climate model into a finer resolution in order to capture some of the localized detail that the coarse global models cannot resolve. There are two general approaches of downscaling: dynamical and statistical. Within those, many dynamical models have been developed by different institutions, and there are a number of statistical algorithms that have been developed over the years. Many past studies have evaluated the performance of these two broad approaches of downscaling with respect to climate variables (e.g., temperature, precipitation), but few have translated these evaluations to ecological metrics that managers use to make decisions in planning for...
thumbnail
A Regional Synthesis of Climate Data to Inform the 2025 State Wildlife Action Plans in the Northeast U.S.
The State Wildlife Action Plans (SWAPs) are proactive planning documents, known as “comprehensive wildlife conservation strategies.” SWAPs assess the health of each state’s wildlife and habitats, identify current management and conservation challenges, and outline needed actions to conserve natural resources over the long term. SWAPs are revised every 10 years, with the last revision in 2015 and the next revision anticipated in 2025. While state managers have a long history of managing for threats such as land-use change, pollution, and harvest, they have expressed a lack of expertise and capacity to keep pace with the rapid advances in climate science. This makes the prospect of integrating climate information...
thumbnail
Climate Assessments and Scenario Planning (CLASP)
This project compiled, synthesized, and communicated tailored climate change information to NE CASC stakeholders, including Landscape Conservation Cooperatives (LCC), state and federal agencies, and tribal communities. Our mission is to make climate science actionable by getting to know our stakeholders and the decisions they face, and delivering climate information that is directly relevant to their decisions and priorities. The project team served as a resource to answer individual inquiries related to climate model projections in order to aid climate change adaptation. Additionally, the team contributed to the development of a synthesis document to help the Midwest and Northeast states prepare their threatened...
Abstract (from Diversity and Distributions): Aim Identifying the mechanisms influencing species' distributions is critical for accurate climate change forecasts. However, current approaches are limited by correlative models that cannot distinguish between direct and indirect effects. Location New Hampshire and Vermont, USA. Methods Using causal and correlational models and new theory on range limits, we compared current (2014–2019) and future (2080s) distributions of ecologically important mammalian carnivores and competitors along range limits in the northeastern US under two global climate models (GCMs) and a high-emission scenario (RCP8.5) of projected snow and forest biomass change. Results Our hypothesis that...
Categories: Publication; Types: Citation
thumbnail
Enhancing the Reliability and Usability of Climate Change Information for Wildlife Action Plans in the Northeastern United States
The northeastern U.S. is home to a wide range of terrestrial and aquatic habitats, leading to a variety of interactions occurring between species and climate on multiple scales. Therefore, the most effective strategy to produce and deliver scientific climate information to resource managers is to align the scales of climate projections with the scales of resource management actions. While available downscaled climate data provides information at very fine resolutions (4-6 km), its usability in helping management decisions and its reliability in capturing various regional weather and climate metrics remain unclear. The goal of this project is for researchers to collaborate with State Wildlife Action Plan coordinators...
ScienceBase brings together the best information it can find about USGS researchers and offices to show connections to publications, projects, and data. We are still working to improve this process and information is by no means complete. If you don't see everything you know is associated with you, a colleague, or your office, please be patient while we work to connect the dots. Feel free to contact sciencebase@usgs.gov.