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February 2, 2018 | Weather | By admin | 0 Comments

By Roger Daley

ISBN-10: 0521382157

ISBN-13: 9780521382151

ISBN-10: 0521458250

ISBN-13: 9780521458252

Functionality becoming -- the strategy of successive corrections -- Statistical interpolation : univariate -- Statistical interpolation : multivariate -- The initialization challenge -- Quasi-geostrophic constraints -- Variational approaches -- general mode initialization : idea -- common mode initialization : purposes -- Dynamic initialization -- non-stop info assimilation -- destiny instructions

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Example text

Methane is an important greenhouse gas 21 times more effective as such than CO 2 on an equal mass basis. During winter and in periodic droughts, uncultivated dry soils of the southern Africa savannas are net sinks for atmospheric CH 4 (Zepp et al. 1996). Once wet they become sources. 8 mg CH 4 -C m-2 h- I at the start of the rainy season in the following October. The source effect lasts only for a few months into the wet season. Termites are often thought to be a primary source of CH 4 from savannas soils (Poth et al.

In contrast, the integrated 850-500 hPa offshore transport to the Indian Ocean over the east coast of South Africa is about 45 Mt yr- 1 at 35° E. The locus of the plume as it crosses the coast is at about 31° S with a mean height of about 750 hPa (again below the -700 hPa stable layer). 5 days. Only 4 Mt yr- 1 is estimated to be deposited by trajectories going to surface between 40° and 50° E. Most deposition of this kind appears to occur over the central Indian Ocean beyond 70° E (Piketh 2000).

South African cloud seeding experiments have demonstrated that the convective clouds of the region are very sensitive to the size and chemistry of aerosols in the atmospheric boundary layer (Mather et al. 1996, 1997a,b). Aerosols derived from the crust of the earth and biomass burning, as well as sulphates and elemental material from industrial sources, frequently remain in the haze layer for periods of a week, and on occasions for as long as three, while they recirculate anticyclonically over South Africa before being exported offshore (Tyson et al.

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Atmospheric data analysis by Roger Daley

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