Climate States of the Earth
Abstract
Over Earth's history Earth's climate has gone through substantial changes such as from total or partial glaciation to a warm climate and vice versa. Even though causes for transitions between these states are not always clear one-dimensional models can determine if such states are stable. On the Earth, undoubtedly, three different stable climate states can be found: total or intermediate glaciation and ice-free conditions. With the help of a one-dimensional model we further analyze the effect of cloud feedbacks on these stable states and determine whether those stabilize the climate at different, intermediate states. We then generalize the analysis to the parameter space of a wide range of Earth-like aquaplanet conditions (changing, for instance, orbital parameters or atmospheric compositions) in order to examine their possible stable climate states and compare those to Earth's climate states.
- Publication:
-
AGU Fall Meeting Abstracts
- Pub Date:
- December 2019
- Bibcode:
- 2019AGUFMPP51E1416A
- Keywords:
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- 0473 Paleoclimatology and paleoceanography;
- BIOGEOSCIENCES;
- 1051 Sedimentary geochemistry;
- GEOCHEMISTRY;
- 1615 Biogeochemical cycles;
- processes;
- and modeling;
- GLOBAL CHANGE;
- 5225 Early environment of Earth;
- PLANETARY SCIENCES: ASTROBIOLOGY