This paper develops residual-based monitoring procedures for cointegrating polynomial regressions, i. e. , regression models including deterministic variables, integrated processes as well as integer powers of integrated processes as regressors. The regressors are allowed to be endogenous and...

This study is based on a balanced panel of pollutants (CO2, SO2 and NOx emissions per capita) drawn from the electricity sector of 51 US regions covering the period 1990-2012. The empirical findings indicate strong evidence of non-linear cointegrated relationships between local (SO2 and NOX) and...