Sentences with phrase «weather season length»

The results show fire weather season length is significantly correlated with the amount of land scorched by fires each year in all eight countries they analysed: Canada, US, Spain, Portugal, Italy, France, Greece and Latvia.

Maps show a) Changes in fire weather season length (in days per year), and b) Changes areas experiencing «long» fire weather seasons (in percent).

Global patterns of fire weather season length changes from 1979 to 2013.

We show that fire weather seasons have lengthened across 29.6 million km2 (25.3 %) of the Earth's vegetated surface, resulting in an 18.7 % increase in global mean fire weather season length.

Fire weather season length and long fire weather season affected area increased significantly across all continents except Australia (Table 1).

South America's tropical and subtropical forests, grasslands and savannas have experienced tremendous fire weather season length changes, with a median increase of 33 days over the last 35 years (Fig. 3a and Table 6).

Generally, low correlations between fire weather season length and global land carbon uptake are to be expected because wildfires represent a small proportion of the total land carbon flux.

This metric was examined to identify global and regional patterns in fire weather season length changes as well as changes in the frequency of, and the area affected by, long fire weather seasons (defined as > 1.0 σ above historical mean) over the last 35 years.

Fire weather season length and long fire weather season affected area significantly increased across all vegetated continents except Australia.

Nonetheless, our global fire weather season length metrics were significantly correlated to global net land carbon flux.

Inter-annual variations in mean US fire weather season length were significantly correlated with variation in annual burned area reported by the US National Interagency Fire Center44 over the full time series from 1979 to 2013 and also from 1992 to 2013, when fire occurrence data quality was highest45 (ρ = 0.679 and 0.683, respectively, P < 0.001).

Annual fire weather season length anomaly maps for a subset of known severe fire years are presented in Fig. 4 and anomalies for all years are presented in Supplementary Figs 1 — 4 and annual ensemble - mean anomaly data are available as Supplementary Data 1.

In addition, our fire weather season length metric captures variations in the number of days each year that fires are likely to burn, but it does not account for inter-annual variations in fire season severity.

Our ensemble fire weather season length metric captured important wildfire events throughout Eurasia such as the Indonesian fires of 1997 — 98 where peat fires, following an El Niño - induced drought, released carbon equivalent to 13 — 40 % of the global fossil fuel emissions from only 1.4 % of the global vegetated land area (Fig. 4, 1997 — 1998) 46 and the heatwave over Western Russia in 2010 (Fig. 4, 2010) that led to its worst fire season in recorded history and triggered extreme air pollution in Moscow51.

Fire weather season length and long fire weather season affected area were only weakly correlated to Canadian boreal forest burned area (Table 4).

In addition, when correlations were constrained to the time period that satellite burned area observations were available from the Moderate Resolution Imaging Spectroradiometer (MODIS)(2001 - 2012), and thus where estimates of land - use change carbon emissions were more certain2, correlations between fire weather season length, long fire season affected area and net land carbon fluxes increased substantially to ρ = − 0.797 and ρ = − 0.825, respectively, n = 12, P < 0.01).

Our results extend these findings by demonstrating that areas with the most significant change in fire weather season length occur where not only temperature but also changes in humidity, length of rain - free intervals and wind speeds are most pronounced.

Likewise, fire weather season length and long fire weather season affected area were significantly correlated with global net land carbon flux calculated from an analysis of the global carbon budget from 1979 to 2012 (ref.

Both mean fire weather season length and long fire weather season affected area, constrained to only boreal forests where most Canadian fires occur, were only weakly correlated to burned area across Canadian forests (ρ = 0.3 and 0.324, respectively, P < 0.1)(Table 4 and Supplementary Fig. 5).

We show that fire weather seasons have lengthened across 29.6 million km2 (25.3 %) of the Earth's vegetated surface, resulting in an 18.7 % increase in global mean fire weather season length.

The highest correlations between the net land carbon flux and continental biome mean fire weather season metrics were observed in the tropical and subtropical forests, grasslands and savannas and xeric shrublands of South America where regional fire weather season length metrics accounted for between 15.7 and 29.7 % of the variations in global net land carbon flux (Table 5).

Because climate studies using multi-model ensembles are generally superior to single model approaches43, all nine fire weather season lengths for each location were averaged into an ensemble mean fire weather season length, hereafter referred to as «Fire Weather Season Length» (See Supplementary Methods).

Not exact matches

A talented defender with length and experience, he helped the Bulls to weather an entire season without Derrick Rose and still reach the conference semifinals.

«The timing of snowmelt and length of the snow - free season significantly impacts weather, the permafrost, and wildlife — in short, the Arctic terrestrial system as a whole,» said Christopher Cox, a scientist with CIRES at the University of Colorado Boulder and NOAA's Physical Sciences Division in Boulder, Colorado.

In contrast to all other continents in our analysis, Australia showed no significant trends in biome - level fire season length, but we identified regional increases in the frequency of anomalously long fire weather seasons, especially from 1996 to 2013 (Fig. 3b).

I am missing trending knee length or any type of boots though... weather is just too humid here in SG and we don't get the seasons!

The spring powerpoint covers objectives in the Y1 science curriculum, looking at the season of spring and how the weather and day length varies.

Objectives Covered: Observe changes across the 4 seasons Observe and describe weather associated with the seasons and how day length varies ALSO ADDED: Individual assessments for ALL science objectives for ALL year groups are available for purchase as are individual year group, KS1, KS2 or complete Primary packs.

Objectives covered: Identify and name a variety of common wild and garden plants, including deciduous and evergreen trees Identify and describe the basic structure of a variety of common flowering plants, including trees Identify and name a variety of common animals including fish, amphibians, reptiles, birds and mammals Identify and name a variety of common animals that are carnivores, herbivores and omnivores Describe and compare the structure of a variety of common animals (fish, amphibians, reptiles, birds and mammals including pets) Identify, name, draw and label the basic parts of the human body and say which part of the body is associated with each sense Distinguish between an object and the material from which it is made Identify and name a variety of everyday materials, including wood, plastic, glass, metal, water, and rock Describe the simple physical properties of a variety of everyday materials Compare and group together a variety of everyday materials on the basis of their simple physical properties Observe changes across the 4 seasons Observe and describe weather associated with the seasons and how day length varies ALSO ADDED: Individual assessments for ALL science objectives for ALL year groups are available for purchase as are individual year group, KS1, KS2 or complete Primary packs.

We are suffering terrible climate change damage — consider the decline in run - off in the Murray Basin, rising temperatures, increasing frequency and violence in extreme weather events, increased ferocity of bushfires and length of the fire danger season, increasing acidity of the oceans and rise in sea levels, the decline in rainfall in the southern half of the country, the damage to the Great Barrier Reef, etc. — we should reduce our CO2 production levels for our own benefit.