The net result is that in the lower troposphere, the temperature difference between low and
high latitudes decreases as the planet warms, creating less wind shear.
If this is true then would not the Trade Winds decrease in intensity if the temperature differential between the tropic and
higher latitudes decrease?
Not exact matches
Mean MHW duration between the 1982 — 1998 and 2000 — 2016 periods increased across 84 % of the global ocean, with significant increases of up to 20 days in the mid - and
high - latitude regions of all ocean basis, up to 30 + days in the central tropical Pacific Ocean and northeastern Pacific Ocean, and
decreases in the eastern tropical Pacific Ocean and the
high latitudes of the Southern Ocean (Fig. 1h).
In that case (along with greater precipitation, and the precipitation belt moving to
higher latitudes), there could be more snow in the winter & greater melting in the summer (in
higher latitudes), while I'd think the lower
latitudes (with less precip) and the local mean temp being
higher, would melt the glaciers faster, without adequate snowfall & low winter temps to slow this glacial
decrease.
... Increases in temperatures of the
higher latitudes would also
decrease density because warmer water is less dense.
Global average surface temperatures are not expected to change significantly although temperatures at
higher latitudes may be expected to
decrease to a modest extent because of a reduction in the efficiency of meridional heat transport (offsetting the additional warming anticipated for this environment caused by the build - up of greenhouse gases).
This accounts for some of the heat loss, sea level rise, and
decreasing salinity at
high latitudes.
That was due to increased global moisture content,
decreased global average cloud cover and
decreased sea ice extent at
high latitudes.
In the tropics, simple thermodynamics (as covered in many undergraduate meteorology courses) dictates that it should actually warm faster, up to about 1.8 times faster by the time you get to 12 km or so; at
higher latitudes this ratio is affected by other factors and
decreases, but does not fall very far below 1.
Most far - term model agreement on increasing fire probabilities (62 percent) occurs at mid - to
high -
latitudes, while agreement on
decreasing probabilities (20 percent) is mainly in the tropics.
Availability of resources such as usable water will also depend on changing rates of precipitation, with
decreased availability in many places but possible increases in runoff and groundwater recharge in some regions like the
high latitudes and wet tropics.
See e.g. slide 31 of http://www.soest.hawaii.edu/GG/FACULTY/POPP/Lecture12.ppt E.g. a
decreased insolation at
high northern
latitudes would cause ice sheets to grow.
Decreases also occur at
high latitudes, where snow cover diminishes (Section 10.3.3).
This means the inertia of earth has
decreased due the massive snows that we have had during the past decade and more which moved water from the low latitude oceans to ice on
high latitudes.
Semiletov's work during the 1990s showed, among other things, that the amount of methane being emitted from terrestrial sources
decreased at
higher latitudes.
«One is you have a very gradual
decrease in the amount of sunlight hitting
high latitudes in the summer.
The largest
decreases have occurred at the
highest latitudes in both hemispheres because of the large winter / spring depletion in polar regions.
Season or specific months: (A) Seasonal temperatures are of particular interest because Polar Regions at
high latitudes are an outstanding example of the considerable impact and influence of the sun
decreases in wintertime as far down as the North - and Baltic Sea (both above 50 ° North).
Broadly, water resources are projected to
decrease in many mid-latitude and dry subtropical regions, and to increase at
high latitudes and in many humid mid-latitude regions (
high agreement, robust evidence).
By mid-century, annual average river runoff and water availability are projected to increase by 10 - 40 % at
high latitudes and in some wet tropical areas, and
decrease by 10 - 30 % over some dry regions at mid-
latitudes and in the dry tropics, some of which are presently water - stressed areas.
Existing projections suggest an increase in primary production at
high latitudes such as the Arctic and the Southern Ocean (because the amount of sunlight available for photosynthesis of phytoplankton goes up as the amount of water covered by ice
decreases).
The effects of declining sea ice on marine mammals are likely to be reflected in the shifting of marine mammal populations (or smaller units) to
higher latitudes by either direct movement and / or indirect shifts associated with increased mortality and
decreased reproduction at lower
latitudes, coincident with
decreased mortality and increased reproduction at
higher latitudes (Tynan and DeMaster 1997).
This
decreases the export of excess salt to the Pacific; it also makes the
high latitudes colder and the tropics warmer.
Globally, we predict
decreases in climatic suitability at lower altitudes and
high latitudes, which may shift production among the major regions that produce Arabica coffee.
We assumed only that due to the biological and physical effects the ratio fabsorbed (t) / (total CO2 content of then air) is more or less constant, hence a simple response pulse response exp -LRB-- t / lifetime) is applied to the anthropic time series of coal, gas, oil and cement which have different delta13C As the isotopic signature of (CO2 natural)(t) is slowly
decreasing because plants living days or centuries ago are now rotting and degassing and as molecules entered in the ocean decades ago are now in the upwellings after a slow migration along the equal density surface from the
high latitudes where those surface are surfacing at depth zero, there are common sense constraints or bounds on the possible evolution of the delta13C of the natural out - gassed CO2 molecules.
Species richness and fisheries catch potential are projected to increase, on average, at mid and
high latitudes (
high confidence) and
decrease at tropical
latitudes (medium confidence).
By contrast, the four Canadian stations, all at
high latitudes, had significant
decreases in tropospheric O3 for the same time period.
GMT drops initially at glacial inception in response to
decreased summer radiation at
high northern
latitudes that would have led to equatorward extension of sea ice and snow cover with associated cooling from increased albedo.
The
decrease in surface carbonate ion concentrations is found to be largest at low and mid-
latitudes, although undersaturation is projected to occur at
high southern
latitudes first (Figure 10.24).
In principle a similar situation could arise at lower
latitudes at
high elevations in the Rocky Mountains, although most models project a widespread
decrease of snow depth there (Kim et al., 2002; Snyder et al., 2003; Leung et al., 2004; see also Box 11.3).
Aquatic Climate Change Adaptation Services Program (ACCASP) In general, precipitation is expected to increase in
high latitudes and in locations and seasons that presently have
high precipitation, and to
decrease in locations elsewhere and seasons that presently have low precipitation.
The basic physics of greenhouse gases are simply not one of those things that are not well - enough understood and if you don't understand how greenhouse gases work you can't possibly move on to any reasonable debate about other phenomena which can and do (IMO) largely negate the effects of increasing greenhouse gases and leave us in a situation where the modest increase in carbon dioxide has vast beneficial effect by warming the planet at
high latitudes where warming is welcome, not warming it at low
latitudes where it is already warm enough, increasing the growth rate of green plants, and
decreasing the water needs of green plants at the same time.
«It is very likely that there will be continued loss of sea ice extent in the Arctic,
decreases of snow cover, and reductions of permafrost at
high latitudes of the Northern Hemisphere by 2016 — 2035.
Climate model simulations for the 21st century are consistent in projecting precipitation increases in
high latitudes (very likely) and parts of the tropics, and
decreases in some subtropical and lower mid-latitude regions (likely).
By 2100, the
decreasing number of suitable growing days in the tropics will offset optimistic projections at mid - and
high latitudes, resulting in minimal changes in the global average number of suitable days under RCP 2.6 and RCP 4.5 but a ~ 26 % reduction in the number of suitable growing days under RCP 8.5 (solid blue lines in Fig 3).
pp770 «
Decreases also occur at
high latitudes, where snow cover diminishes».
Coral migration to
higher latitudes with more optimal SST is unlikely, due both to latitudinally
decreasing aragonite concentrations and PROJECTED atmospheric CO2 increases (Kleypas et al., 2001; Guinotte et al., 2003; Orr et al., 2005; Raven et al., 2005).