Sentences with phrase «of high insolation»

BrightSource focuses its selection process on areas of high insolation, or solar radiation, for project sites to maximize land efficiency and minimize a project's footprint.

Not exact matches

In addition, current insolation values are not predicted to return to the high values of late MIS 11 for another 65 kyr.

However, increase of solar insolation in the high latitudes did not warm the tropics and so GAT rose relatively little.

The combination of insolation at high latitude, solar irradiance, cloud cover, and carbon dixoide concentrations all combine to influence glacial cycles.

However as the area was ice covered at that time increased insolation wouldn't have caused high temperatures, although inflow of air or large leads / polnyas could.

A recent study on the GIS melt during the Eemian argues that temperature rise alone produced 55 % of the melt and the rest was caused by higher solar insolation and feedbacks.

Precession dominates * midsummer * high - latitude insolation (the usual Milankovitch metric), but obliquity has a stronger influence on Huybers» notion of «summer heat» (which takes into account the astronomical influence on length - of - season.

We know that there were two other factors at play, increasing CO2 and higher insolation, both of which also change the energy balance positively and therefore increase the equilibrium response to the changes in the environment.

During a sun cycle, the global cloud cover changes with + / - 2 %, good for a change of several W / m2 (depending on type of clouds and region), far higher than the effect of insolation change as result of the sun's energy variation.

Thus the «only 0.6 W / m2» in insolation since the Maunder Minimum, in reality may have been fortified to a difference of several W / m2... While there is no change in solar strength in the past 25 years, the level still is high and the oceans still may not be in equilibrium with the heat inflow...

IMHO, the increase in speed of the Hadley / Walker cells may be the result of higher ocean temperatures (or temperature differences over long distances), not the origin (or to a lesser extent, as less clouds lead to some extra insolation, thus warming).

So really it's the gain of the temperature - convection feedback that's at stake, and if it were high enough to fully offset all radiative effects on temperature, there'd be some obvious symptoms — low natural variability and glacial cycles perfectly correlated with insolation perhaps.

AIUI, the assumption is that most of the first - year ice will melt, and much of it is located around the North Pole this year, so it will melt late (if at all) because of less insolation at high latitudes.

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.

The references you gave for variance of insolation reaching the ground in this post are for decadal variations, in particular mid-century dimming (1950's -1980's), the well known cooling associated with high aerosols, and in fact discussed on SkS.

Past and future changes in insolation can be calculated over several millions of years with a high degree of confidence.

Keep in mind there's a dearth of insolation at high latitudes so albedo becomes increasingly less important so snow cover over land doesn't mean as much.

MILANKOVITCH CYCLES overall favor N.H. cooling and an increase in snow cover over N.H high latitudes during the N.H summers due to the fact that perihelion occurs during the N.H. winter (highly favorable for increase summer snow cover), obliquity is 23.44 degrees which is at least neutral for an increase summer N.H. snow cover, while eccentricity of the earth's orbit is currently at 0.0167 which is still circular enough to favor reduced summertime solar insolation in the N.H. and thus promote more snow cover.

What we know with some certainty about oceans (if data is to be believed) is that the intra-annual change in the insolation effects (suspiciously) high symmetricity in the N. Atlantic's sea surface temperature, cantered on 1st of March and 31st of August.

Because of the high Sun, the intertropical convergence zone receives the greatest quantity of daily solar insolation in the tropics.

The rapid 1940s retreat is linked to unusually high solar insolation and patterns of precipitation governed by the Atlantic Multidecadal and North Atlantic Oscillation.42, 43

The temperature of the tropics does not vary much from season to season because high quantities of solar insolation are received here regardless of the time of the year.

The warm early - Holocene climate around Svalbard was driven primarily by higher insolation and greater influx of warm Atlantic Water, but feedback processes further influenced the regional climate.»

In the early Holocene, Fisher argues that the glacier elevation was considerably higher than at present and was lowered through the high summer insolation of the early Holocene.

(For a given location on Earth's surface, the highest daily temperatures are achieved just after the period of greatest insolation, since time is required to heat the ocean surface waters and the soil.)

Even on the most aggressive interpretation of CO2 forcing, the increase in forcing is much, much lower than the Holocene summer insolation forcing (JJA insolation in the Holocene optimum was more than 40 wm - 2 higher than at present.)

Dry climates have a higher mean annual temperature than wet cllimates when insolation is the same at top of atmosphere.

In this article I present prima facie evidence that the ongoing natural increase in spring insolation occurring at high northern latitudes, coupled with the positive feedback effect of the resultant snow and ice loss reducing the region's mean albedo over summer, comprises just such a causative agency.

Yes, NASA data indicate insolation is at a 1000 year high, they however also indicate that there has been only very small changes the last century and no changes (aside from the 11 year cycles) over the last 30 years (since the onset of the satellite era).

Here it is shown that the precession of perihelion occurring over a century substantially affects the intra-annual variation of solar radiation influx at different locations, especially higher latitudes, with northern and southern hemispheres being subject to contrasting insolation changes.

Using pollen based climate reconstructions, Field et al. (1994) suggest that instability of the AMOC due to high summer insolation and increased precipitation may have led to cold winters in northern Europe.

In the case of the 100 kyr ice age cycles, that forcing is high northern latitude summer insolation driven by predictable changes in Earth's orbital and rotational parameters — aka, Milankovitch theory — which has the intial effect of melting glaciers, thereby reducing albedo at those latitudes.

Be CSI an omission or not, examination of those graphics suggests the size of the CSI effect AD1000 to AD2000 amounts to +2 Wm ^ -2 insolation (+0.002 Wm ^ -2 / year) over high northern latitudes during the merry months of April & May and -2 Wm ^ -2 insolation -LRB--0.002 Wm ^ -2 / year) over higher northern latitudes during the jolly months of July & August.

To compare this with AGW, AR5 Table AII.2 yields an annual average year - round and global forcing increase averaged over the last 30 years of +0.026 Wm ^ -2 / year, many times higher than the part - year, part - globe CSI which is also a small part of the insolation changes over the last 1,000 years, an effect which is adjudged, with or without any omission, to be insignificant in comparison to AGW.

In the first case, an ECS of 8 K / 2xCO2 is too high... obvious to me because I know that I didn't take methane into account, which is a significant contributor, nor ice albedo feedback as a function of high northern latitude insolation cycles a la Milankovitch.

A good place to start in comprehending the high variability of temperatures and sea ice in the Arctic is the recognition that, at those latitudes, the available heat comes primarily from oceanic and atmospheric advection, rather than local thermalization of insolation.

Given the global location of Iran provides it with some of the world's highest solar insolation, there is actually solar research occurring.

Despite enjoying some of the highest wind and insolation levels in the world, Mexico has yet to develop most of the potential of its renewable energy sources.

In the case of the early Holocene, the forcing was a maximum in Milankovitch - related northern high latitude summer insolation.

Regardless of the carbon source (s), it has been shown that the hyperthermals were astronomically paced, spurred by coincident maxima in the Earth's orbit eccentricity and spin axis tilt [17], which increased high - latitude insolation and warming.

Until climatologists can properly make models that reflect the entire global history and take into account plate position and how high the plates ride, oceanic levels due to this and the position of oceans, overall insolation, overall daylength and its effects on average global temperature and factor in known carbon dioxide levels over that time period, then they will be unable to give any correlation between current carbon dioxide levels and global temperature.

The direct radiative forcing (DRF) is strongest in the Northern Hemisphere summer when the insolation is the highest although different seasonal cycles of the sulphate burden from the chemical transport models result in maximum global mean radiative forcings ranging from May to August (e.g., Haywood and Ramaswamy, 1998), the ratio of the June - July - August / December - January - February radiative forcing being estimated to lie in the range less than 2 (e.g., van Dorland et al., 1997) to > 5 (e.g., Penner et al., 1998b; Grant et al., 1999) with a mean of approximately 3.3.

http://illconsidered.blogspot.com/2006/04/historically-co2-never-causes.html 100 years of shift does not factor into the larger scale phenomena http://illconsidered.blogspot.com/2006/01/one-hundred-years-is-not-enough.html Until climatologists can properly make models that reflect the entire global history and take into account plate position and how high the plates ride, oceanic levels due to this and the position of oceans, overall insolation, overall daylength and its effects on average global temperature and factor in known carbon dioxide levels over that time period, then they will be unable to give any correlation between current carbon dioxide levels and global temperature.

The increased evaporation deposits snow on high altitudes that survives the summer in lower insolation periods accumulating and reflecting more of the suns energy back into space.

The energy harvesting medium thus shares the same axis of orientation which is a disadvantage where the insolation may be coming from one direction in the sky high above and the wind from another direction horizontal to the earths surface, such that both energy sources may not be harvested efficiently.

During those months the insolation at the top of atmosphere over the arctic is higher than anywhere else in the world.

However, climates at high latitude are known to be very sensitive to orbital parameters affecting insolation (Ravelo et al., 2004), and thus proxy estimates with uncertain age constraints are not directly comparable to model simulations that typically span hundreds of years.

And of course changes in albedo make the dry adiabatic lapse of stratsosphere a moot point because high altitude clouds reject insolation before it ever gets a chance to reach the troposphere.

However Scafetta's (2009) bridging of contested calibration between satellites supports the lead investigator's case for higher than direct Total Solar Insolation (TSI) variation.

The surface temperature of Venus is (as you probably know) a hefty 740 K. That's much higher than the simple comparison of insolation would indicate.