evapotranspiration
Let an agent explain evapotranspiration, relay components, controls, measurement and uses from hydrology, agronomy and climate sources, describe the biotic pump hypothesis with the debate attributed, and distinguish evapotranspiration from evaporation alone, transpiration alone, potential versus actual evapotranspiration and precipitation recycling.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain evapotranspiration, relay components, controls, measurement and uses from hydrology, agronomy and climate sources, describe the biotic pump hypothesis with the debate attributed, and distinguish evapotranspiration from evaporation alone, transpiration alone, potential versus actual evapotranspiration and precipitation recycling.
The combined transfer of water to the atmosphere by evaporation from soil, water and plant surfaces and by transpiration through plant stomata, a major component of the water cycle and energy balance, estimated with methods such as the FAO-56 Penman-Monteith reference evapotranspiration equation, lysimeters, eddy covariance and satellite remote sensing, and used in irrigation scheduling, hydrology and climate studies; the registry alias biotic pump names a hypothesis proposed by Anastassia Makarieva and Victor Gorshkov in 2007 that forests drive moisture-laden winds inland through condensation, which is debated in atmospheric science and is a distinct idea, and positions are attributed.
What it is for: Understanding water and energy exchange between land and atmosphere.
It can be explain components and controls; relay measurement methods; relay uses in irrigation and hydrology; present the biotic pump debate with attribution.
Distinguishing features
Two component fluxes
Energy-limited or water-limited
Key irrigation input
Measured indirectly
What it looks like
Not directly visible; inferred from measurements, sometimes seen as mist over forests.
Physical character
FAO Irrigation and Drainage Paper 56: 1998 year - reference ET method
global land ET share of precipitation: about 60 percent note - estimate, attributed
biotic pump hypothesis: 2007 year - Makarieva and Gorshkov
How it is recognised
Evaporation plus transpiration
Biotic pump
Evaporation alone excludes plants; transpiration alone is plant water loss; potential ET is atmospheric demand; precipitation recycling is rain from local ET
Related models
is part of - related
includes -
is estimated by -
is contrasted with - debated hypothesis alias
In practice
Families and kinds
reference evapotranspiration
potential evapotranspiration
actual evapotranspiration
crop evapotranspiration
Standards and regulation
FAO-56 guidelines
ASCE standardised reference evapotranspiration equation
Failure modes and hazards
Over-irrigation from wrong estimates
Presenting the biotic pump as settled
Confusing potential and actual ET
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What evapotranspiration is.
Science.
Definition
Definition.
Definition
Definition.
- What is evapotranspiration, and how does it differ from evaporation, transpiration, potential ET and precipitation recycling? definition
- Is the question about irrigation, hydrology or climate research? boundary
Biotic pump
Biotic pump hypothesis.
Biotic pump
Biotic pump.
- What is the biotic pump hypothesis? definition
- Which entry fits the specific concept? action
Physics Controls.
Science.
Energy
Energy balance.
Energy
Energy.
- How do radiation, humidity, wind and soil moisture control ET? provenance
- Which references are standard? provenance
Stomata
Plant control.
Stomata
Stomata.
- How do plants regulate transpiration through stomata? provenance
- Which sources are cited? provenance
Measurement Measurement.
Regulation.
Penman-Monteith
Reference ET.
Penman-Monteith
Penman-Monteith.
- How is reference ET calculated with FAO-56 Penman-Monteith? measurement
- Which entry fits Penman-Monteith equation? action
Remote sensing
Satellite ET.
Remote sensing
Remote sensing.
- How do eddy covariance and satellites estimate actual ET? measurement
- Is the information current? boundary
Context Debates.
Attribution.
Forests
Forests and rainfall.
Forests
Forests.
- What do supporters and critics say about the biotic pump and forest-driven rainfall, with positions attributed? provenance
- Is the presentation neutral and attributed? boundary
Irrigation
Irrigation scheduling.
Irrigation
Irrigation.
- How do farmers use crop coefficients and ET for irrigation? provenance
- Which entry fits irrigation scheduling? action
What the second pass must settle
- The registry alias biotic pump should be moved to a separate hypothesis entry
- How should satellite ET products be linked?
- Should potential and actual ET be separate entries?