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Activity Number: 642
Type: Topic Contributed
Date/Time: Thursday, August 4, 2016 : 8:30 AM to 10:20 AM
Sponsor: Business and Economic Statistics Section
Abstract #320617 View Presentation
Title: Weather Adjustment of Economic Output
Author(s): Sven Schreiber* and Erik Haustein
Companies: IMK, Hans Boeckler Foundation and University of Kiel
Keywords: weather ; business cycle ; nowcasting

While recurring and regular variations of weather conditions are implicitly addressed by standard seasonal adjustment procedures of economic time series, extraordinary weather outcomes are not. We propose a way of measuring aggregate abnormal weather conditions based on available local measurements and a straightforward regression-based framework to analyze their impact on German monthly total industrial and construction-sector production data, and find noticeable effects. In the historical -and seasonally adjusted- construction sector growth data the extra explanatory power of the weather regressors over a benchmark univariate autoregressive model even exceeds 50% of the variation. The estimated effects of weather deviations can be subtracted from the already seasonally adjusted data to obtain (seasonally as well as) weather adjusted series, which might capture economic developments better. Given the timely availability of the weather data compared to the publication lag of economic measurements, we also point out how measuring the weather impact may help short-term forecasting or nowcasting of industrial production in real time.

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