Spatial Patterns of Crop Yield Change by Emitted Pollutant

Comparison of spatial patterns of pollutant distribution with CMAQ predictions

To evaluate the Models-3/Community Multiscale Air Quality (CMAQ) modeling system in reproducing the spatial patterns of aerosol concentrations over the country on timescales of months and years, the spatial patterns of model output are compared with those derived from observational data. Simple spatial interpolation procedures were applied to data from the Clean Air Status and Trends Network (C...

Principal Component Analysis of Crop Yield Response to Climate Change

Spatial Patterns of CO Vehicular Pollutant in Macao Peninsula

This paper describes a new approach to assess high-resolution Carbon Dioxide (CO) distribution for the peninsula of Macao Special Administrative Region (S.A.R.). Firstly, two widely used vehicular pollution models, namely Danish Operational Street Pollution Model (OSPM) and United States intersection vehicular pollution model (CAL3QHC), were applied to evaluate the roadside CO concentration fro...

Pcic Science Brief: Crop Yield under Climate Change and Adaptation

University House 1, PO Box 1700, STN CSC, University of Victoria, Victoria, British Columbia, Canada, V8W 3R4 Phone: 250-721-6236 | Fax: 250-721-7217 | pacificclimate.org 1. The best fit curves were determined using locally weighted polynomial regression. For more on locally weighted polynomial regression, see: Wand, M. P. and M. C. Jones, 1995: Kernel Smoothing, CRC Press, 232 pp. A recent met...

Climate change impacts on crop yield: evidence from China.

When estimating climate change impact on crop yield, a typical assumption is constant elasticity of yield with respect to a climate variable even though the elasticity may be inconstant. After estimating both constant and inconstant elasticities with respect to temperature and precipitation based on provincial panel data in China 1980-2008, our results show that during that period, the temperat...