Please enable JavaScript.
Coggle requires JavaScript to display documents.
Models in Cryosphere (Pine Island Bedrock (Bedrock beneath glacier flowing…
Models in Cryosphere
Pine Island Bedrock
Bedrock beneath glacier flowing into ice shelf
Corrected bedrock using model (no bedrock high)
Observations along = insufficient
Model + Obv - distils physical principles required to describe bedrock
Bedrock shape @ ice-sea interface
--> shown to be key to its dynamics
Gourmelen
et al (2017)
Thinning beneath Dotson Ice Shelf, Antarctica
= Focussed along one margin
Goldberg recognised pattern from idealised model
--> suggesting channalised melting mechanism
Tedstone et al (2015)
Decadal slowdown land terminating part GRIS
in response to increasing surface temperatures
Models used to disprove other factors not responsible for cahnge
∴ Support mechanism proposed
Cryosphere science models
Complement observations
help us understand climate system
Vary in complexity
theoretical - simple conceptual model
complex i.e. global climate
Can help
Determine dominant physical processes
Develop plausible mechanisms
Infer quantites / properties that are not directly observable
Predictions
Prediction - not best application of models
Not v. reliable
e.g. sea ice extent reduced @ much greater rate than IPCC projections
Models help develop mechanisms / interpretations to explain observations