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Warm oceans helped first human migration from Asia to North America（图）
Warm oceans first human migration Asia to North America
2020/12/31
New research reveals significant changes in the circulation of the North Pacific Ocean and their impact on the initial migration of humans from Asia to North America.The U.S. National Science Fou...
Climate patterns linked in Amazon, North and South America（图）
Climate patterns Amazon North South America
2020/10/16
Researchers at the University of Arkansas have established a link between climate patterns in the Amazon and large parts of North and South America using a newly developed tree-ring chronolo...
Coupling between the JULES land-surface scheme and the CCATT-BRAMS atmospheric chemistry model (JULES-CCATT-BRAMS1.0): applications to numerical weather forecasting and the CO2 budget in South America
JULES land-surface scheme the CCATT-BRAMS atmospheric
2014/12/12
This article presents the coupling of the JULES
surface model to the CCATT-BRAMS atmospheric chemistry model. This new numerical system is denominated
JULES-CCATT-BRAMS.
Unraveling the complex local-scale flows influencing ozone patterns in the southern Great Lakes of North America
the complex local-scale flows ozone patterns the southern Great Lakes of North America
2010/11/30
This study examines the complexity of various processes influencing summertime ozone levels in the southern Great Lakes region of North America. Results from the Border Air Quality and Meteorology (BA...
Statistical properties of aerosol-cloud-precipitation interactions in South America
Statistical properties aerosol-cloud-precipitation interactions South America
2010/3/16
Given the complex interaction between aerosol, cloud, and atmospheric properties, it is difficult to extract their individual effects to observed rainfall amount. This research uses principle componen...
Smoke injection heights from fires in North America: analysis of 5 years of satellite observations
Smoke injection heights fires North America
2010/2/21
We analyze an extensive record of aerosol smoke plume heights derived from observations over North America for the fire seasons of 2002 and 2004–2007 made by the Multi-angle Imaging SpectroRadiometer ...
Pollen-based biome reconstructions for Latin America at 0, 6000 and 18 000 radiocarbon years ago
Latin America Pollen-based biome
2009/12/3
The biomisation method is used to reconstruct Latin American vegetation at 6000±500 and 18 000±1000 radiocarbon years before present (14C yr BP) from pollen data. Tests using modern pollen data from 3...
Organic composition of single and submicron particles in different regions of western North America and the eastern Pacific during INTEX-B 2006
single and submicron particles western North America eastern Pacific INTEX-B 2006
2009/8/7
Single particles were collected from an aircraft platform as part of the Intercontinental Chemical Transport Experiment – Phase B (INTEX-B) conducted over the eastern Pacific and western North America...
Summertime impact of convective transport and lightning NOx production over North America: modeling dependence on meteorological simulations
convective transport lightning NOx production North America meteorological simulations
2009/7/15
Global-scale chemical transport model simulations indicate lightning NOx dominates upper tropospheric O3 production above Eastern North America during summertime but vary in their estimates. To improv...
Increasing ozone in marine boundary layer inflow at the west coasts of North America and Europe
ozone marine boundary layer west coasts North America Europe
2009/3/13
An effective method is presented for determining the ozone (O3) mixing ratio in the onshore flow of marine air at the North American west coast. By combining the data available from all marine boundar...
Trace elements in South America aerosol during 20th century inferred from a Nevado Illimani ice core, Eastern Bolivian Andes（6350 m asl）
Trace elements South America aerosol Nevado Illimani ice core Eastern Bolivian Andes
2009/3/11
A 137 m ice core drilled in 1999 from Eastern Bolivian Andes at the summit of Nevado Illimani (16º 37' S, 67º 46' W, 6350 m asl) was analyzed at high temporal resolution, allowing a characte...
A numerical modelling study on regional mercury budget for eastern North America
numerical modelling regional mercury budget eastern North America
2009/3/10
In this study, we have integrated an up-to-date physio-chemical transformation mechanism of Hg into the framework of US EPA's CMAQ model system. In addition, the model adapted detailed calculations of...
Single particle analysis of the accumulation mode aerosol over the northeast Amazonian tropical rain forest, Surinam, South America
accumulation mode aerosol northeast Amazonian tropical rain forest Surinam South America
2009/2/19
Single particle analysis of aerosols particles larger than 0.2 μm diameter was performed on 24 samples collected over Surinam tropical rain forest and in the adjacent marine boundary layer (MBL) durin...
Air quality in North America's most populous city – overview of the MCMA-2003 campaign
Air quality North America
2008/12/10
Exploratory field measurements in the Mexico City Metropolitan Area (MCMA) in February 2002 set the stage for a major air quality field measurement campaign in the spring of 2003 (MCMA-2003). Involvin...
Transpacific transport of ozone pollution and the effect of recent Asian emission increases on air quality in North America: an integrated analysis using satellite, aircraft, ozonesonde, and surface observations
ozone pollution Asian emission North America
2008/11/24
We use an ensemble of aircraft, satellite, sonde, and surface observations for April–May 2006 (NASA/INTEX-B aircraft campaign) to better understand the mechanisms for transpacific ozone pollution and ...