claim: Water vapor helps trap heat, and is a far the strongest of the major greenhouse gases, contributing 36–72 percent of the greenhouse effect.
evidences.evidence_id: Greenhouse effect:13
evidences.article: Greenhouse effect
evidences.evidence: From 1859 onwards, he showed that the effect was due to a very small proportion of the atmosphere, with the main gases having no effect, and was largely due to water vapour, though small percentages of hydrocarbons and carbon dioxide had a significant effect.
evidences.votes: SUPPORTS SUPPORTS
evidences.evidence_id: Greenhouse effect:30
evidences.article: Greenhouse effect
evidences.evidence: However radiative energy losses become increasingly important higher in the atmosphere, largely because of the decreasing concentration of water vapor, an important greenhouse gas.
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Greenhouse effect:45
evidences.article: Greenhouse effect
evidences.evidence: By their percentage contribution to the greenhouse effect on Earth the four major gases are: water vapor, 36–70% carbon dioxide, 9–26% methane, 4–9% ozone, 3–7% It is not possible to assign a specific percentage to each gas because the absorption and emission bands of the gases overlap (hence the ranges given above).
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Greenhouse gas:172
evidences.article: Greenhouse gas
evidences.evidence: Water vapor accounts for the largest percentage of the greenhouse effect, between 36% and 66% for clear sky conditions and between 66% and 85% when including clouds.
evidences.votes: SUPPORTS REFUTES
evidences.evidence_id: Water vapor:110
evidences.article: Water vapor
evidences.evidence: Water vapor is the most potent greenhouse gas owing to the presence of the hydroxyl bond which strongly absorbs in the infra-red region of the light spectrum.
evidences.votes: SUPPORTS SUPPORTS