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Type
House
Session
Year
Department
Member
Primary member
More
Watson of Wyre Forest, Lord (1)
Answering member
Legislative stage
Legislation
Subject
Publisher
To ask the Secretary of State for Environment, Food and Rural Affairs, what evaluation she has made of experiments to use oceans to absorb more carbon dioxide by spraying them with iron filings and the impact this will have on global warming.
To ask the Secretary of State for Environment, Food and Rural Affairs, what evaluation she has made of experiments to use oceans to absorb more carbon dioxide by spraying them with iron filings and the impact this will have on global warming.
Asked by
Lord Watson of Wyre Forest
(Labour)
Answered by
Elliot Morley
(Labour)
Answering body
Department for Environment, Food and Rural Affairs
Type
Written questions
Status
Answered
Tabled on
26 April 2004
For answer on
6 May 2004
Answered on
6 May 2004
Mr. Watson: To ask the Secretary of State for Environment, Food and Rural Affairs what evaluation she has made of experiments to use
oceans to absorb more carbon dioxide by spraying them with iron filings and the impact this will have on global warming. [169239]
Mr. Morley: Experimental studies of iron fertilisation have so far been carried out on a relatively small scale, and computer models
are needed to estimate the consequences of large scale fertilisation. Modelling studies of iron fertilisation are currently
performed as part of Defra's Climate Prediction Programme at the Hadley Centre.
Iron fertilisation encourages extra growth of phytoplankton, which increases the uptake of carbon dioxide from the water and
subsequently the atmosphere. Preliminary studies have indicated that even wide spread and continuous iron fertilisation would reduce
levels of atmospheric carbon dioxide by only a small fraction, making it unlikely that there would be a significant impact on global
warming. In addition, the consequences of such fertilisation on marine ecosystems could be severe.
Subjects
Climate change; Iron and steel; Research; Seas and oceans
Date
6 May 2004
Reference
420 c1663W;420 c1664W; 169239
House
House of Commons