KlimaCampus Kolloquium: Measuring the Climate on the Oceans - 150 Years of Weather Observations at Sea

In the middle of the 19th century, merchant ships leaving the harbour of Hamburg started to take meteorological instruments with them to conduct systematic meteorological observations at sea. The data was collected on behalf of the "Deutsche Seewarte" and significantly improved the knowledge about the weather and the climatic conditions on the oceans allowing safer and faster voyages.

This system of "Voluntary Observing Ships" still exists and nowadays a fleet of several hundred vessels regularly sends weather reports to Deutscher Wetterdienst (DWD) in Hamburg.

Apart from their use in operational weather forecasting, the observations are an important contribution for climatological archives such as marine in-situ database of DWD's Marine Climate Data Centre. Apart from recent data received through operational data streams, the database consists of a large amount of historic data, which is continuously growing by digitization from old meteorological ship logbooks.

As part of the international data exchange, data is regularly integrated in the International Comprehensive Ocean-Atmosphere Data Set (ICOADS) and is used for a variety of application such as input for climate reanalyses, operational climate monitoring and the calibration of satellite observations.

In this talk, I will give an overview of the history of marine meteorological observations in Hamburg from the 19th century sailing ship era to modern automated observation systems. The data rescue project will be highlighted as well as the evolution of the international data exchange and recent climate related applications.

To join the talk, please register at www.klimacampus-hamburg.de/klimacampus-colloquium.

Date

01.07.2021

Time

15:15 h

Place

Virtual Seminar
Hamburg

Speaker

Axel Andersson, Deutscher Wetterdienst, Hamburg

Organizers

Bjorn Stevens

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