A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures
Current conventional weather forecasts are based on high-dimensional numerical models. They are usually only skillful up to a maximum lead time of around 7 days due to the chaotic nature of the climate dynamics and the related exponential growth of model and data initialisation errors. Even the full...
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fttudresden:oai:qucosa:de:qucosa:26523 2024-06-09T07:48:23+00:00 A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures Wulffen, Anja von Kantz, Holger Kurths, Jürgen Technische Universität Dresden 2013-02-18 https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa-104493 https://tud.qucosa.de/id/qucosa%3A26523 https://tud.qucosa.de/api/qucosa%3A26523/attachment/ATT-0/ eng eng urn:nbn:de:bsz:14-qucosa-104493 379542803 https://tud.qucosa.de/id/qucosa%3A26523 https://tud.qucosa.de/api/qucosa%3A26523/attachment/ATT-0/ info:eu-repo/semantics/openAccess info:eu-repo/classification/ddc/530 ddc:530 Datenanalyse Lufttemperatur Wettervorhersage Kurzfristige Prognose Langfristige Prognose Prognoseverfahren Nordatlantik-Oszillation Temperatur Vorhersage Wiederkehrzeit Nordatlantische Oszillation statistische Datenanalyse Zeitreihenanalyse temperature forecasting first passage time North Atlantic Oscillation Statistical data analysis time series analysis doc-type:doctoralThesis info:eu-repo/semantics/doctoralThesis doc-type:Text 2013 fttudresden 2024-05-14T03:04:15Z Current conventional weather forecasts are based on high-dimensional numerical models. They are usually only skillful up to a maximum lead time of around 7 days due to the chaotic nature of the climate dynamics and the related exponential growth of model and data initialisation errors. Even the fully detailed medium-range predictions made for instance at the European Centre for Medium-Range Weather Forecasts do not exceed lead times of 14 days, while even longer-range predictions are limited to time-averaged forecast outputs only. Many sectors would profit significantly from accurate forecasts on seasonal time scales without needing the wealth of details a full dynamical model can deliver. In this thesis, we aim to study the potential of a much cheaper data-based statistical approach to provide predictions of comparable or even better skill up to seasonal lead times, using as an examplary forecast target the time until the next occurrence of frost. To this end, we first analyse the properties of the temperature anomaly time series obtained from measured data by subtracting a sinusoidal seasonal cycle, as well as the distribution properties of the first passage times to frost. The possibility of generating additional temperature anomaly data with the same properties by using very simple autoregressive model processes to potentially reduce the statistical fluctuations in our analysis is investigated and ultimately rejected. In a next step, we study the potential for predictability using only conditional first passage time distributions derived from the temperature anomaly time series and confirm a significant dependence of the distributions on the initial conditions. After this preliminary analysis, we issue data-based out-of-sample forecasts for three different prediction targets: The specific date of first frost, the probability of observing frost before summer for forecasts issued in spring, and the full probability distribution of the first passage times to frost. We then study the possibility of improving the ... Doctoral or Postdoctoral Thesis North Atlantic North Atlantic oscillation Dresden University of Technology: Qucosa |
institution |
Open Polar |
collection |
Dresden University of Technology: Qucosa |
op_collection_id |
fttudresden |
language |
English |
topic |
info:eu-repo/classification/ddc/530 ddc:530 Datenanalyse Lufttemperatur Wettervorhersage Kurzfristige Prognose Langfristige Prognose Prognoseverfahren Nordatlantik-Oszillation Temperatur Vorhersage Wiederkehrzeit Nordatlantische Oszillation statistische Datenanalyse Zeitreihenanalyse temperature forecasting first passage time North Atlantic Oscillation Statistical data analysis time series analysis |
spellingShingle |
info:eu-repo/classification/ddc/530 ddc:530 Datenanalyse Lufttemperatur Wettervorhersage Kurzfristige Prognose Langfristige Prognose Prognoseverfahren Nordatlantik-Oszillation Temperatur Vorhersage Wiederkehrzeit Nordatlantische Oszillation statistische Datenanalyse Zeitreihenanalyse temperature forecasting first passage time North Atlantic Oscillation Statistical data analysis time series analysis Wulffen, Anja von A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures |
topic_facet |
info:eu-repo/classification/ddc/530 ddc:530 Datenanalyse Lufttemperatur Wettervorhersage Kurzfristige Prognose Langfristige Prognose Prognoseverfahren Nordatlantik-Oszillation Temperatur Vorhersage Wiederkehrzeit Nordatlantische Oszillation statistische Datenanalyse Zeitreihenanalyse temperature forecasting first passage time North Atlantic Oscillation Statistical data analysis time series analysis |
description |
Current conventional weather forecasts are based on high-dimensional numerical models. They are usually only skillful up to a maximum lead time of around 7 days due to the chaotic nature of the climate dynamics and the related exponential growth of model and data initialisation errors. Even the fully detailed medium-range predictions made for instance at the European Centre for Medium-Range Weather Forecasts do not exceed lead times of 14 days, while even longer-range predictions are limited to time-averaged forecast outputs only. Many sectors would profit significantly from accurate forecasts on seasonal time scales without needing the wealth of details a full dynamical model can deliver. In this thesis, we aim to study the potential of a much cheaper data-based statistical approach to provide predictions of comparable or even better skill up to seasonal lead times, using as an examplary forecast target the time until the next occurrence of frost. To this end, we first analyse the properties of the temperature anomaly time series obtained from measured data by subtracting a sinusoidal seasonal cycle, as well as the distribution properties of the first passage times to frost. The possibility of generating additional temperature anomaly data with the same properties by using very simple autoregressive model processes to potentially reduce the statistical fluctuations in our analysis is investigated and ultimately rejected. In a next step, we study the potential for predictability using only conditional first passage time distributions derived from the temperature anomaly time series and confirm a significant dependence of the distributions on the initial conditions. After this preliminary analysis, we issue data-based out-of-sample forecasts for three different prediction targets: The specific date of first frost, the probability of observing frost before summer for forecasts issued in spring, and the full probability distribution of the first passage times to frost. We then study the possibility of improving the ... |
author2 |
Kantz, Holger Kurths, Jürgen Technische Universität Dresden |
format |
Doctoral or Postdoctoral Thesis |
author |
Wulffen, Anja von |
author_facet |
Wulffen, Anja von |
author_sort |
Wulffen, Anja von |
title |
A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures |
title_short |
A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures |
title_full |
A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures |
title_fullStr |
A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures |
title_full_unstemmed |
A Bridge between Short-Range and Seasonal Forecasts: Data-Based First Passage Time Prediction in Temperatures |
title_sort |
bridge between short-range and seasonal forecasts: data-based first passage time prediction in temperatures |
publishDate |
2013 |
url |
https://nbn-resolving.org/urn:nbn:de:bsz:14-qucosa-104493 https://tud.qucosa.de/id/qucosa%3A26523 https://tud.qucosa.de/api/qucosa%3A26523/attachment/ATT-0/ |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
urn:nbn:de:bsz:14-qucosa-104493 379542803 https://tud.qucosa.de/id/qucosa%3A26523 https://tud.qucosa.de/api/qucosa%3A26523/attachment/ATT-0/ |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1801380082584911872 |