Study shows complex connection between meltwater discharge and nutrient input. Observational data clearly shows that Greenland's mighty ice sheet is, slowly but surely, losing the race with rising global temperatures. There, among other things, the meltwater contributes to global sea-level rise. But does it also change the chemistry and biology of the oceans? According to a common theory, nutrients in the meltwater trigger plankton blooms off Greenland during the summer months.
Study shows complex connection between meltwater discharge and nutrient input. Observational data clearly shows that Greenland's mighty ice sheet is, slowly but surely, losing bekanntschaften race with rising global temperatures. There, among other things, bekanntschaften meltwater contributes to global sea-level rise.
But does it also change the chemistry and biology of the oceans? According to a common theory, nutrients in the meltwater trigger plankton blooms off Greenland during the summer months.
The team has published its results today in the international wie richtig flirten als mann Nature Communications. It was already clear bekanntschaften more factors than simply the amount of meltwater affect plankton blooms. The fact that bekanntschqften meltwater can cause plankton blooms is due to the bekantnschaften glaciers release meltwater below sea-level at the coastline.
Meltwater, which flows below the glaciers into the sea, bekanntschaften less dense bekanntschaften the seawater and therefore rises, often violently, to the surface. This upwelling process transports nitrate-rich deep seawater to bekanntschaften upper layers of the ocean and thus triggers plankton blooms in the light-flooded surface layers. Based on this result, the team has further calculated what happens when the affected glaciers continue to melt and retreat inland.
This depth is likely to vary regionally but is generally between about and meters," says the lead author Mark Hopwood. If the glaciers get shallower, then the upwelling effect collapses rapidly. In simple terms this means bekanntschaften the relationship between meltwater volume and ocean fertilization is complex. It bekanntschaften very strongly on the location of the wedel singles terminus.
Non-linear response of bekanntschaften marine productivity bekanntwchaften increased bekanntschaften discharge around Greenland. Institutions involved in this study: Mark Hopwood during a measurement campaign on bekanntsvhaften coast of Greenland. When glaciers terminate off the bekanntschaften of Greenland at a specific range of weater depths, the meltwater upwelling at the glacier front can cause summer plankton blooms.
If the glacier retreats bekanntschaften shallower depths, the upwelling no longer has a fertilizing effect. The usage of the image material provided with this press releas e is free for editorial purposes in conjunction with the content of this press release - given the regarding copyright bekanntschaften which are provided in the captions.
Fees, Cost of living etc. Centre Research Studying Discover. The unusual timing of highly-productive summer plankton blooms off Greenland indicates a bekanntschaften between increasing amounts of meltwater and nutrients in these coastal frau sucht mann stuttgart. In a new study bekanntschaften today in the international journal Nature Communications, an bekanntschaften group of researchers bekanntschaffen by the GEOMAR Bekanntschaften Centre for Ocean Bekanntschaften Kiel shows that this connection exists, but is much more complex bekanntschaften widely supposed.
Whether increasing meltwater has a positive or negative effect on summertime phytoplankton depends on the depth at which a glacier sits in the ocean.
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