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| Titel |
GloboLakes: A global observatory of lake responses to environmental change. |
| VerfasserIn |
Steve Groom, Andrew Tyler, Peter Hunter, Evangelos Spyrakos, Victor Martinez-Vicente, Chris Merchant, Mark Cutler, John Rowan, Terry Dawson, Stephen Maberly, Laurence Cavalho, Alex Elliot, Stephen Thackery, Claire Miller, Marian Scott |
| Konferenz |
EGU General Assembly 2014
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 16 (2014) |
| Datensatznummer |
250098445
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| Publikation (Nr.) |
 EGU/EGU2014-14124.pdf |
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| Zusammenfassung |
| The world’s freshwater ecosystems are vital components of the global biosphere, yet
are vulnerable to climate and other human-induced change. There is increasing
recognition that lakes play an important role in global biogeochemical cycling and
provide key ecosystem services. However, our understanding of how lakes respond to
environmental change at a global scale, and how this impacts on their status and
function, is hampered by limited information on their chemical, physical and ecological
condition. There are estimated to be over 300 million lakes globally, of which over
17,000 are greater than 10 km2 in surface area. These numbers have limited the
systematic study of lake ecosystems. GloboLakes is a five-year UK research programme
investigating the state of lakes and their response to climatic and other environmental
drivers of change. It will establish a satellite-based observatory with archive and
near-real time data processing to produce a time series of observed biogeochemical
parameters and lake temperature for over 1000 lakes globally. This will be supported by
linked ancillary data on climate and catchment land-use. The ability to monitor a
large number of lakes consistently at high frequency and globally will facilitate a
paradigm shift in our understanding of how lakes respond to environmental change
at different spatial and temporal scales. A key requirement is to validate satellite
retrieval algorithms and test the time-series of resulting lake properties such as
chlorophyll-a by comparison with in situ data. To support the former extensive
bio-optical and constituent data were taken in year 1 of the project in a number of UK
lakes with a variety of trophic states. Furthermore, for wider validation activities
GloboLakes has established the LIMNADES initiative to create a centralised database of
ground bio-optical measurements of worldwide lakes through voluntary cooperation
across the international scientific community. This presentation will introduce the
GloboLakes project including its scientific ambitions for the next 4 years, present initial
results, focussing on in-water optical data and describe the LIMNADES database. |
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