This online calculator begins with some reasonable Pacfic ocean parameters. Free free to input your own parameters and see the results.

### Online Down-Upwelling Calculator

Heat Exchanger Effectiveness = 0.55

Total Bouyancy = 0.5549 metric tons

Total Power = 0.55 megawatts

Wave Height = 0.78 meters- crest to trough

Exchanger Diameter = 0.78 meters

 Depth (meters) Degrees (Celcius) Salinity (ppt) Density (kg/m3) 0 15.2 35.50 1026.341 50 12.0 35.10 1026.694 100 10.2 34.95 1026.905 150 9.2 34.92 1027.050 200 8.8 34.91 1027.106 250 8.2 34.89 1027.183 300 7.8 34.88 1027.235

## Up Flow

Top Extension Diameter = 0.00 meters

Diameter per downflow pipe = 0.00 meters

Downflow_bottom_position = 300 meters

Number of Downflow Pipes = 000

Downflow Conductance = 000 watts per square meter degree K

Downflow Reynolds number = 000

One Pipe Power = 795

Downflow Exit Temperature = 795 degrees C

Downflow Velocity = 795 meters per second

Bottom Extension Diameter = 795 meters

Downflow Egress Density = 795 kg per cubic meter

Upflow Top Position = 0.30 meters

Upflow Bottom Position = 0.20 meters

Upflow Conductance = 150 watts per square meter degree K

Upflow Reynolds number= 795

Upflow Exit Temperature = 795 degrees C

Upflow Velocity = 795 meters per second

Upwelling Rate = 795 metric tons per second

upWellingBuoyancy = 795 meters of head

dow_density = 795 kg per cubic meter

check for auto-graphing

Note that an upwelling is possible even at a wave-height of zero. This phenomenon was predicted and known as the "perpetual salt fountain". See "Artificial Upwelling of Deep Seawater Using the Perpetual Salt Fountain for Cultivation of Ocean Desert" by Maruyama, S. Tsubaki, K. Taira, K. Sakai, S. in JOURNAL OF OCEANOGRAPHY Vol. 60 pp. 563-568 (2004).

### Nutrients

In the top several hundred meters in the North Pacific, the concentration of nitrate increases approximately linearly by 6.5 μmoles per liter for every 100 meters depth, and phosphate concentration increases by 0.5 μmoles per liter for every 100 meters depth (Marine Geochemistry edited by Horst D. Schulz and Matthias Zabel, 2006, page 208). With the dimensions given for the device in the pacific, nitrate is added to the photic zone at a rate of 14.95 millimoles per cubic meter of upwelling. The amount of phosphate added is 1.15 millimoles per cubic meter of upwelling. At a rate of 1.4 cubic meters per second, a single upwelling device is delivering 112 kilograms of nitrate and 13.2 kilograms of phosphate to the photic zone each day.