Sentences with phrase «maximum tropical warming»

Not exact matches

Abstract — James L. Crowley — 12 November 2010 Effects of Rapid Global Warming at the Paleocene - Eocene Boundary on Neotropical Vegetation Temperatures in tropical regions are estimated to have increased by 3 ° to 5 °C, compared with Late Paleocene values, during the Paleocene - Eocene Thermal Maximum (PETM, 56.3 million years ago)......... eastern Colombia and western Venezuela.

You may already be preparing a post on this paper, but Allen and Sherwood (2008): «Warming maximum in the tropical upper troposphere deduced from thermal winds» is now available as an «advance online publication» in Nature Geoscience.

Using Mg / Ca paleothermometry from the planktonic foraminifera Globigerinoides ruber from the past 500 k.y. at Ocean Drilling Program (ODP) Site 871 in the western Pacific warm pool, we estimate the tropical Pacific climate sensitivity parameter (λ) to be 0.94 — 1.06 °C (W m − 2) − 1, higher than that predicted by model simulations of the Last Glacial Maximum or by models of doubled greenhouse gas concentration forcing.

Using Mg / Ca paleothermometry from the planktonic foraminifera Globigerinoides ruber from the past 500 k.y. at Ocean Drilling Program (ODP) Site 871 in the western Pacific warm pool, we estimate the tropical Pacific climate sensitivity parameter (λ) to be 0.94 — 1.06 °C (W m − 2) − 1, higher than that predicted by model simulations of the Last Glacial Maximum or by models of doubled greenhouse gas concentration forcing.

There is more to the increased thermodynamic potential of tropical storms than SST (as Kerry Emanuel, Greg Holland and others have very clearly shown), an example of that is the multi-model projections of MPI response (which shows a big swath of Maximum Potential Intensity (MPI) decrease in the Atlantic, even though the entire tropics are warming).

Maximum warming is predicted to occur in the middle and upper tropical troposphere.

«Observational analyses have shown the width of the tropical belt increasing in recent decades as the world has warmed... we use a climate model with detailed aerosol physics to show that increases in heterogeneous warming agents — including black carbon aerosols and tropospheric ozone — are noticeably better than greenhouse gases at driving expansion, and can account for the observed summertime maximum in tropical expansion.

«With the exception of the South Pacific Ocean, all tropical cyclone basins show increases in the lifetime - maximum wind speeds of the strongest storms... Our results are qualitatively consistent with the hypothesis that as the seas warm, the ocean has more energy to convert to tropical cyclone wind.»

There is a limit to maximum surface temperatures in the tropical warm pool (first determined by Ramanathan & Collins, Nature, v351, 27 - 32 (1991) and subsequently confirmed by several others).

If you want to see what a «warmer» climate looks like, look to the MWP, the RWP and interglacial periods, and even the Paleocene — Eocene Thermal Maximum when most of the planet was tropical up to the Arctic Circle, there was no winter, and life flourished (Oh, and CO2 was 5 times today).

For example, some investigators argue that tropical warming was approximately 5 °C from the last glacial maximum to today.

The models heavily relied upon by the Intergovernmental Panel on Climate Change (IPCC) had not projected this multidecadal stasis in «global warming»; nor (until trained ex post facto) the fall in TS from 1940 - 1975; nor 50 years» cooling in Antarctica (Doran et al., 2002) and the Arctic (Soon, 2005); nor the absence of ocean warming since 2003 (Lyman et al., 2006; Gouretski & Koltermann, 2007); nor the onset, duration, or intensity of the Madden - Julian intraseasonal oscillation, the Quasi-Biennial Oscillation in the tropical stratosphere, El Nino / La Nina oscillations, the Atlantic Multidecadal Oscillation, or the Pacific Decadal Oscillation that has recently transited from its warming to its cooling phase (oceanic oscillations which, on their own, may account for all of the observed warmings and coolings over the past half - century: Tsoniset al., 2007); nor the magnitude nor duration of multi-century events such as the Mediaeval Warm Period or the Little Ice Age; nor the cessation since 2000 of the previously - observed growth in atmospheric methane concentration (IPCC, 2007); nor the active 2004 hurricane season; nor the inactive subsequent seasons; nor the UK flooding of 2007 (the Met Office had forecast a summer of prolonged droughts only six weeks previously); nor the solar Grand Maximum of the past 70 years, during which the Sun was more active, for longer, than at almost any similar period in the past 11,400 years (Hathaway, 2004; Solankiet al., 2005); nor the consequent surface «global warming» on Mars, Jupiter, Neptune's largest moon, and even distant Pluto; nor the eerily - continuing 2006 solar minimum; nor the consequent, precipitate decline of ~ 0.8 °C in TS from January 2007 to May 2008 that has canceled out almost all of the observed warming of the 20th century.

In addition, the solar - plus - ozone change leads to increased tropical stratospheric warming in the mid-to-upper stratosphere during solar maximum conditions.