Sentences with phrase «compare ocean observations»

Not exact matches

In February, Australian and American researchers who compared ocean and climate modeling results with weather observations published findings in Nature Climate Change advancing earlier studies that explored the oscillation's global influence.

In order to compare these satellite - based observations with ocean heat content it is necessary to anchor the data to an absolute scale.

In fact, the calculation has been done very carefully by Hansen and co-workers, taking all factors into consideration, and when compared with observations of ocean heat storage over a period long enough for the observed changes to be reliably assessed, models and observations agree extremely well (see this article and this article.).

«By comparing the actual New Horizons observations of Charon to the various predictions, we can see what fits best and discover if Charon could have had a subsurface ocean in its past, driven by high eccentricity.»

Since OHC uptake efficiency associated with surface warming is low compared with the rate of radiative restoring (increase in energy loss to space as specified by the climate feedback parameter), an important internal contribution must lead to a loss rather than a gain of ocean heat; thus the observation of OHC increase requires a dominant role for external forcing.

A detailed reanalysis is presented of a «Bayesian» climate parameter study (Forest et al., 2006) that estimates climate sensitivity (ECS) jointly with effective ocean diffusivity and aerosol forcing, using optimal fingerprints to compare multi-decadal observations with simulations by the MIT 2D climate model at varying settings of the three climate parameters.

Here's Randy's latest video, comparing the observations of adventurers voyaging on rafts in the Pacific Ocean 50 years apart:

Forest et al. 2006 compares observations of multiple surface, upper air and deep - ocean temperature changes with simulations thereof by the MIT 2D climate model run at many climate parameter settings.

The retrospective simulation results, in conjunction with available observations, will be compared to results from the projection runs in order to quantify the changes in an ice - diminished Arctic Ocean under various scenarios.

That was compared to real world observations of quantities and isotope changes in atmosphere and the oceans mixed layer.

Compare the SAR and the TAR for example, and since then we have many more proxy reconstructions to consider, the satellite analyses corrected, new data about energy imbalances, better observations of ocean currents and temperature, ice sheet behaviour in Greenland and Antarctica and much much more.

«Causes of differences in model and satellite tropospheric warming rates» «Comparing tropospheric warming in climate models and satellite data» «Robust comparison of climate models with observations using blended land air and ocean sea surface temperatures» «Coverage bias in the HadCRUT4 temperature series and its impact on recent temperature trends» «Reconciling warming trends» «Natural variability, radiative forcing and climate response in the recent hiatus reconciled» «Reconciling controversies about the «global warming hiatus»»

In an earlier study (Labe et al., 2018a), we show that the CESM - LENS sea ice thickness compares well with satellite observations and output from an ice - ocean model.

I would assume that all that happens is that the transport of heat is changed in the model: if surface air temps in the model are too high compared to observations, more heat is made to go down into the ocean, and vice versa.

Data from an ocean glider equipped with a host of scientific instrumentation and deployed ahead of the storm allowed researchers not only to see how sediment was being redistributed by the hurricane as the storm unfolded but also to compare their real - life observations with forecasts from mathematical models.

First, as in Mann and Kump, Mann compared model projections for land - and - ocean to observations for land - only.

The observation - based (Global Ocean Data Analysis Project; GLODAP) 1994 saturation horizon (solid white line) is also shown to illustrate the projected changes in the saturation horizon compared to the present.

Compared with observed atmospheric and ocean warming, the hindcasts tracked the observations best in both atmosphere and ocean for a pCO2 - doubling, climate sensitivity of 2.5 K.

After comparing a range of models with actual observations, his team predicts that the Arctic Ocean will be ice free during September as early as the end of this century.

More recent documentation (Hansen et al. 2010) compares alternative analyses and addresses questions about perception and reality of global warming; various choices for the ocean data are tested; it is also shown that global temperature change is sensitive to estimated temperature change in polar regions, where observations are limited.

None of these could have been caused by an increase in atmospheric CO2, Model projections of warming during recent decades have greatly exceeded what has been observed, The modelling community has openly acknowledged that the ability of existing models to simulate past climates is due to numerous arbitrary tuning adjustments, Observations show no statistically valid trends in flooding or drought, and no meaningful acceleration whatsoever of pre-existing long term sea level rise (about 6 inches per century) worldwide, Current carbon dioxide levels, around 400 parts per million are still very small compared to the averages over geological history, when thousands of parts per million prevailed, and when life flourished on land and in the oceans.

Interesting for sure, vut the scientific payoff for using all this computer time doesn't seem to be too high in the absence of observations of the ocean circulation during this period with which to compare the simulations.