Research Interests of Alan Robock

RESEARCH INTERESTS OF ALAN ROBOCK


NUCLEAR WINTER

Collaborators: Georgiy L. Stenchikov (Research Professor), Brian Toon (University of Colorado), Richard Turco (UCLA), Luke Oman (Johns Hopkins University), Charles Bardeen (University of Colorado)

In the 1980s much of my work addressed the problem of nuclear winter, the climatic effects of nuclear war, demonstrating long-term (several year) effects with a computer model, disproving the dirty snow effect, and discovering observational evidence of surface cooling due to forest fire smoke plumes in the atmosphere. I am now once again doing research in this area, using modern climate models to look at the climatic effects of regional nuclear conflicts.  Our latest work (this link includes all our recent papers and PowerPoints) shows that even a "small" regional nuclear conflict could have severe global climatic effects, and that there are still enough nuclear weapons in global arsenals to produce nuclear winter, which would last much longer than previously thought.  This is the most serious environmental threat faced by humans and demands immediate policy attention.

EFFECTS OF VOLCANIC ERUPTIONS ON CLIMATE

Collaborators: Georgiy L. Stenchikov (Research Professor), Luke Oman (Johns Hopkins University), Chaochao Gao (Graduate Student)

We were recently funded by NSF and NOAA to study the effects of volcanic eruptions on climate using computer models and data analysis, and to develop a better record of past volcanism with ice core data.  Our papers on volcanic eruptions and climate include studies of winter warming from large tropical eruptions, climatic effects of high-latitude eruptions (including how they have produced reduced precipitation and famine in Africa and Asia), radiative forcing from volcanic stratospheric aerosol clouds, evaluation of the volcanic record in ice cores, and climate modeling of the long-term effects of volcanic eruptions.

I have produced a PowerPoint presentation of the effects of volcanic eruptions on climate that can be used for teaching undergraduate and graduate classes.  It is 37 MB, and you can get it by clicking here.  You will also need the movie, pin.AVI.

SOIL MOISTURE AND CLIMATE

Collaborators: Konstantin Y. Vinnikov (University of Maryland), Haibin Li (Princeton University)

I have completed work on a NOAA-funded project to collect and analyze soil moisture data from the United States to evaluated the new Land Data Assimilation System soil moisture calculations. I established a Global Soil Moisture Data Bank to collect and distribute soil moisture observations. This project is related to the GEWEX Americas Prediction Project (GAPP). My papers on soil moisture also include studies of land-surface parameterization schemes, the temporal and spatial scales of soil moisture variations, remote sensing of soil moisture, design of surface observing networks for soil moisture, and trends of soil moisture.

HUMAN IMPACTS OF CLIMATE CHANGE

Collaborator: Konstantin Y. Vinnikov (University of Maryland)

I study the human impacts of climate change and the impacts of human activities on the climate system. My papers on human impacts include papers on creation of scenarios of regional climate change, impact of climate change on corn production in Venezuela, effects of preindustrial human activities on climate, and detection of anthropogenic climate effects by examining the vertical structure of observed and modeled climate change and by examining observed and modeled trends in Northern Hemisphere sea ice.

REGIONAL ATMOSPHERE-HYDROLOGY MODELING

Collaborators:  Ying Fan Reinfelder (Assistant Professor), Richard Anyah (Research Associate), Christopher Weaver (Environmental Protection Agency), Gonzalo Miguez-Macho (Universidade de Santiago de Compostela),  Elif Sertel (Fulbright Scholar from Istanbul Technical University)

I am now working on a project funded by NSF (and previously by the New Jersey Department of Environmental Protection) to use regional climate models to produce scenarios for impact analysis for New Jersey and to study the impacts of climate change on the hydrology of the United States.  This includes changes in water table and streamflow, as well as soil moisture.  Richard Anyah and I also have a new NSF grant to study climate change in the Greater Horn of Africa.  For both of these studies we use RAMS-Hydro, a regional climate model developed by Gonzalo Miguez-Macho and Ying Fan Reinfelder, that explicitly models not only the atmosphere but also water table and stream flow.  It is described and used in recent papers here.

GEOENGINEERING

Collaborators: Georgiy L. Stenchikov (Research Professor), Martin Bunzl (Professor, Philosophy), Richard Turco (UCLA), Luke Oman (Johns Hopkins University), Ben Kravitz (Graduate Student)

Funded by a new NSF grant, we are evaluation the efficacy and possible consequences of proposals to reduce incoming solar radiation to counteract global warming by injecting aerosol particle into the stratosphere.




Prepared by Alan Robock (robock@envsci.rutgers.edu) - Last updated on December 30 2007