upwelling
pronunciation
How to pronounce upwelling in British English:
UK [ʌp'welɪŋ]
How to pronounce upwelling in American English:
US [ʌp'welɪŋ]
Word Origin
- upwelling (adj.)
- 1841, from up (adv.) + present participle of well (v.). As a noun from 1847. A verb upwell is attested from 1885.
Example
- 1. As upwelling declines , populations of larger phytoplankton such as diatoms are predicted to decline ( green line ) .
- 2. Simulating upwelling in a large lake using slippery sacks .
- 3. In the equatorial upwelling zone , there is very little seasonal change in phytoplankton productivity .
- 4. During el ni o events , phytoplankton productivity in the equatorial pacific declines dramatically as the easterly trade winds that normally drive upwelling grow still or even reverse direction .
- 5. These upwelling zones , including one along the equator maintained by the convergence of the easterly trade winds , and others along the western coasts of several continents , are among the most productive ocean ecosystems .