منابع مشابه
Observed and modeled relationships among Arctic climate variables
[1] The complex interactions among climate variables in the Arctic have important implications for potential climate change, both globally and locally. Because the Arctic is a data-sparse region and because global climate models (GCMs) often represent Arctic climate variables poorly, significant uncertainties remain in our understanding of these processes. In addition to the traditional approac...
متن کاملInformation-Theoretic Methods for Identifying Relationships among Climate Variables
* Supported by NASA AIST-QRS-07-0001 AbstractInformation-theoretic quantities, such as entropy, are used to quantify the amount of information a given variable provides. Entropies can be used together to compute the mutual information, which quantifies the amount of information two variables share. However, accurately estimating these quantities from data is extremely challenging. We have devel...
متن کاملClimate trends in the Arctic as observed from space
The Arctic is a region in transformation. Warming in the region has been amplified, as expected from ice-albedo feedback effects, with the rate of warming observed to be ∼0.60 ± 0.07°C/decade in the Arctic (>64°N) compared to ∼0.17°C/decade globally during the last three decades. This increase in surface temperature is manifested in all components of the cryosphere. In particular, the sea ice e...
متن کاملVisualizing Relationships among Categorical Variables
Centuries of chart-making have produced some outstanding charts tailored specifically to the data being visualized. They have also produced a myriad of less-than-outstanding charts in the same vein. I instead present a set of techniques that may be applied to arbitrary datasets with specific properties. In particular, I describe two techniques – Nested Category Maps and Correlation Maps – for v...
متن کاملArctic Holocene proxy climate database – new approaches to assessing geochronological accuracy and encoding climate variables
We present a systematic compilation of previously published Holocene proxy climate records from the Arctic. We identified 170 sites from north of 58 N latitude where proxy time series extend back at least to 6 cal ka (all ages in this article are in calendar years before present – BP), are resolved at submillennial scale (at least one value every 400± 200 years) and have age models constrained ...
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ژورنال
عنوان ژورنال: Journal of Geophysical Research: Atmospheres
سال: 2003
ISSN: 0148-0227
DOI: 10.1029/2003jd003824