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Arctic Pollution 2011
AMAP, 2011
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Arctic Pollution 2011
AMAP, 2011
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Sécurité des moyens d’existence : changements climatiques, migrations et conflits au Sahel
PNUE, 2011Cette étude commune à paraître a deux objectifs : premièrement d’analyser l’évolution historique du climat dans le Sahel, d’identifier les régions où des problèmes se posent avec une acuité particulière (nommées « points chauds ») et de déterminer les implications potentielles des variations climatiques observées sur les moyens d’existence dépendants des ressources naturelles ; deuxièmement de fournir des recommandations destinées à améliorer la sensibilité des plans d’adaptations et d’investissement de la région aux problématiques de conflit et de migration.
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Growth pattern of a common feather moss, Hylocomium splendens, from contrasting water regimes in a high Arctic tundra
Antarctic Record, Vol. 54, No. 2. Ueno Takeshi; Kanda Hiroshi - Scholarly and Academic Information Navigator (CiNii), 2010Hylocomium splendens, a widespread feather moss, is one of the major plant species found in high-Arctic tundra. It occupies a variety of habitats ranging from exposed dry ground to swampy areas. To clarify the effect of the water regime on the growth pattern of H. splendens, the shoot morphology of H. splendens growing in contrasting water regimes, i.e. hydric, mesic and xeric sites, was investigated using retrospective analyses of growth. The derived growth parameters for H. splendens differed considerably among the sites. The growing period at the hydric, mesic and xeric sites was 1 year, 2 ...
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Further Study of Typhoon Tracks and the Low-Frequency (30-60 Days) Wind-Field Pattern at 850 hPa
Atmospheric and Oceanic Science Letters, Volume 3 Number 6. Tian Hua; Li Chong-Yin - Science Press, 2010The association of typhoon tracks over the western Pacific with the low-frequency wind-field pattern of atmospheric intraseasonal (30-60 days) oscillation at 850 hPa is further studied by using observational data analyses. Comparative analyses of the composite wind fields at 850 hPa, contrasting the atmospheric intraseasonal oscillation (ISO) with the original circulation, show that the typhoon tracks are closely related to the wind pattern of the ISO but are not obviously related to the original wind fields. Case studies of two typhoons in 2006 also show that the low-frequency wind-field patt ...
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Polar Vortex Response to Pacific Ocean Warming and Its Additive Nonlinearity with the Indian Ocean
A previous modeling study about Pacific Ocean warming derived polar vortex response signals, by subtracting those in the Indian Ocean warming experiments from those in the Indo-Pacific. This approach questions the resemblance of such an indirectly derived response to one directly forced by Pacific Ocean warming. This is relevant to the additive nonlinearity of atmospheric responses to separated Indian and Pacific Ocean forcing. In the present study, an additional set of ensemble experiments are performed by prescribing isolated SST forcing in the tropical Pacific Ocean to address this issue. T ...
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Vol. 88. No 3 - June 2010
is an issue of Journal of the Meteorological Society of Japan. Meteorological Society of Japan, 2010Contains:
- Mechanisms of Temporary Improvement and Rapid Changes in Visibility in Fogs
- Changes in Potential Intensity of Tropical Cyclones Approaching Japan due to Anthropogenic Warming in Sea Surface and Upper-Air Temperatures
- Convective Boundary Layer above a Subtropical Island Observed by C-band Radar and Interpretation using a Cloud Resolving Model
- Role of Large-Scale Circulation in Triggering Foehns in the Hokuriku District of Japan during Midsummer
- Diurnal Variations in Lower-Tropospheric Wind over Japan ...
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Regime Behavior in the Sea Surface Temperature-Cloud Radiative Forcing Relationships over the Pacific Cold Tongue Region
Atmospheric and Oceanic Science Letters, Volume 3 Number 5. Wu Chun-Qiang; Zhou Tian-Jun; De-Zheng Xiao-Li - Science Press, 2010Previous analyses on the estimates of water vapor and cloud-related feedbacks in the tropics usually use observations over the Earth Radiation Budget Experiment (ERBE) period (1985–89). To examine the sample dependence of previous estimates, the authors extend the analysis to two additional periods: 1990–94 and 1995–99. The results confirm our hypothesis, i.e., the values of the feedbacks depend on the period of data coverage. The differences in the feedbacks from cloud radiative forcings (CRFs) estimated from the three periods are particularly significant. Two possible causes for these differ ...
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Special issue - Atmospheric brown cloud in the Himalayas
is an issue of Atmospheric Chemistry and Physics (ACP). Copernicus GmbH, 2010
A Forecaster's Overview of the Northwest Pacific
This module provides an introduction to the northwest Pacific for weather forecasters. It touches on major aspects of the geography, oceanography, and climatology. Geography looks at plate tectonics, topography, and human population. Oceanography examines ocean currents, coastal tidal ranges, and sea ice distribution. Climatology briefly discusses jets streams, distribution of synoptic features, storm tracks of tropical and extratropical cyclones, the fronts, and sensible weather associated with the Northeast and Southwest Monsoons.
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