Posts Tagged «NOAA»

This new data set is a concerted effort to collect as many observations of sea ice thickness as possible in one place with consistent formats and with clear and abundant documentation. It will allow the community to better utilize what is now a considerable body of observations from moorings, submarines, aircraft, and satellites.

This project will produce authoritative SAT data sets covering the Arctic Ocean from 1901 to present, which will be used to better understand Arctic climate change.

Seasonal Anomaly Maps — each product compred to the ensemble medianSeasonal Trend Maps — seasonal trends of each variableThis work has been published in the Journal of Climate (Lindsay, R., M. Wensnahan, A. Schweiger, and J. Zhang, 2014: Evaluation of seven different atmospheric reanalysis products in the Arctic. J. Climate, DOI: 10.1175/JCLI-D-13-00014.1. )AbstractAtmospheric reanalyses depend on a mix of observations and model forecasts. In data-sparse regions such as the Arctic, the reanalysis solution is more dependent on the model structure, assumptions, and data assimilation methods than in data-rich regions. Applications such as the forcing of ice-ocean models are sensitive to…

The extent of arctic sea ice during the summer has declined to near-record minima during the last several summers. Can we predict future minima? Our weekly to seasonal forecasts provided by the National/Naval Ice Center help residents and navigators in the Arctic make better decisions regarding sea ice.

Our overarching goals are to study and understand the physical processes in the high latitude oceans, including large-scale circulation, shelf-basin interactions, and water mass formation; linkages between polar oceans and the lower latitudes; and the role of polar processes in climate. We do this primarily with observations, drawing on theory and modelling results to explain processes we observe. Our primary tools are subsurface moorings in ice-covered waters, which we deploy in several regions to study different questions.

The participants of the IABP work together to maintain a network of drifting buoys in the Arctic Ocean to provide meteorological and oceanographic data for real-time operational requirements and research purposes including support to the World Climate Research Programme and the World Weather Watch Programme.

We compare the observations of arctic sea ice thickness estimates from satellites with in situ observations – collected by submarine cruises and moorings under the sea ice, by direct measurement during field camps, by electromagnetic instruments flown over the sea ice, and by buoys drifting with the sea ice – to provide a careful assessment of our capabilities to monitor the thickness of sea ice.