Models Of Climate Change Are Most In Agreement With Observed Data Quizlet

Another common problem in climate models is the position of jet streams in climate models. Jet streams are high-speed wind rivers that flow up the atmosphere. They can move weather systems from west to east on Earth. In addition, changes in instrumentation due to changes in the surveyor`s design affect factors such as wind, humidification losses and evaporation, which affect the collection efficiency and measurement of rain, and in particular snow, lead to distortions over time that need to be corrected. National practices for converting frozen precipitation to liquid equivalent vary. In the past, discontinuities have often been observed in isohyets* beyond the borders of neighbouring countries. Correcting ubiquitous inhomogens in precipitation records with full station readings is essential if one wants to gain confidence in the change in precipitation over time. This gives scientists more confidence in using models to make future estimates. Climate simulations for the period 1990-2100, based on IPCC emission scenarios, show an average global increase in surface temperature of 1.4 to 5.8°C (2.5 to 10.4°F) compared to 1990. The wide variety of uncertainties in these estimates reflects both the different assumptions about future greenhouse gas and aerosol concentrations in the different scenarios envisaged by the IPCC, as well as the different climate sensitivities of the different climate models used in the simulations. The range of climate sensitivities implied by these forecasts is generally consistent with previously reported values. Why did this happen? Much of it could be related to changes in the tropics and what meteorologists call “tele-connections.” Tele-connections are created because the atmosphere reacts to dendränges by building waves that can propagate over long distances.

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