OCEAN KARIZ: a novel approach to artificial upwelling

Artificial upwelling has long been recognized as a potential approach for enhancing marine productivity, supporting coastal ecosystems, and mitigating some consequences of global warming.

By Daei, Daei, Daei +1Frontiers in Marine ScienceOct 19, 2026

Score████░░░░░░4.3

VerdictWorth a reader's time today.

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Abstract

Artificial upwelling has long been recognized as a potential approach for enhancing marine productivity, supporting coastal ecosystems, and mitigating some consequences of global warming. By transporting cold, nutrient-rich deep sea water toward the upper ocean, artificial upwelling may contribute to reducing local sea surface temperature, improving fisheries, supporting aquaculture, and increasing coastal resilience. However, despite decades of scientific and social interest, large-scale implementation has remained limited, because most existing approaches depend on offshore pumping systems, high energy requirements, complex marine infrastructure, and demanding maintenance conditions. This paper introduces OCEAN KARIZ (OK), a novel conceptual framework for artificial upwelling inspired by a natural upwelling system (Dhofar phenomenon), which has changed regional weather and economic conditions in the limited coastal region of Oman without prominent side effects over the past millennia. Unlike conventional approaches that attempt to mechanically lift deep sea water at offshore locations, OCEAN KARIZ proposes establishing a hydraulic connection between deep ocean water and the coastline through a large-diameter transmission pipeline, named the "mother pipe". As a rule, we never connect the mother pipe directly to a pump. Instead, we connect it to an enlarged coastal terminal section. The coastal terminal, which is air-connected through an upright vent and totally located under water, functions as a stable hydraulic source from which independent branch pipelines can distribute deep sea water according to different applications. The OK system architecture has many technical and economic advantages over conventional systems, which make it controllable and extendable.

Mohammad Ali Daei, Bijan Daei, Behrooz Daei, Manijeh Daei

The editor's rubric

Heuristic review

Leverage3 / 5: A method or resource many groups across the field will adopt within a year.; 16% of this desk’s rubric
Magnitude2 / 5: Solid incremental gain on a meaningful problem.; 20% of this desk’s rubric
Evidence3 / 5: Solid: multiple benchmarks or cohorts, ablations, fair baselines, released code or data.; 20% of this desk’s rubric
Novelty3 / 5: A genuinely new approach to an open problem.; 10% of this desk’s rubric
Trajectory2 / 5: Some room to improve with obvious engineering.; 14% of this desk’s rubric
Stakes3 / 5: Meaningful benefit to many people within a few years.; 20% of this desk’s rubric

Dimension	Level	Weight	What that level means
Leverage	███░░ 3	16%	A method or resource many groups across the field will adopt within a year.
Magnitude	██░░░ 2	20%	Solid incremental gain on a meaningful problem.
Evidence	███░░ 3	20%	Solid: multiple benchmarks or cohorts, ablations, fair baselines, released code or data.
Novelty	███░░ 3	10%	A genuinely new approach to an open problem.
Trajectory	██░░░ 2	14%	Some room to improve with obvious engineering.
Stakes	███░░ 3	20%	Meaningful benefit to many people within a few years.

Editor’s rationale

Heuristic triage from title and abstract text only, not a reading of the paper. Cues found: method (new method); novelty (open problem); verification (independent replication); scale (scalable); stakes (global scale, energy, climate).

How the score was computed

rank-2026-10-18

Score████░░░░░░4.3

Score = 10 × (75% × adjusted merit / 10 + 15% × attention + 10% × freshness)

Desks place stronger verdicts first, then use this score to order work within the same verdict.

Merit: 5.3 / 10; Weighted rubric, evidence-gated.
Adjusted merit: 4.6 / 10; Shrunk toward the desk prior by editor confidence (44%).
Attention: 0%; Citations, upvotes, points, mentions.
Freshness: 85%; Half-life decay since publication.

Citations0 (reference 15, via openalex, Oct 21, 2026, 07:29 UTC)

The record

Reviewed by heuristic-v7 on Oct 21, 2026, 07:29 UTC. Paper type: method.
Categories: Oceanographic and Atmospheric Processes, Offshore Engineering and Technologies, Climate Change and Geoengineering, Oceanography, Earth and Planetary Sciences
BRIEF, No.3 in the Climate & Energy edition of October 21, 2026.