搜索结果: 46-60 共查到“理学 anthropogenic”相关记录75条 . 查询时间(0.225 秒)
An understanding of the regional contributions and trends of anthropogenic carbon dioxide (CO2) emissions is critical to design mitigation strategies aimed at stabilizing atmospheric greenhouse gases....
The role of ocean transport in the uptake of anthropogenic CO2
role ocean transport uptake anthropogenic CO2
2010/1/19
We compare modeled oceanic carbon uptake in response to pulse CO2 emissions using a suite of global ocean models and Earth system models. In response to a CO2 pulse emission of 590 Pg C (corresponding...
Possible influence of anthropogenic aerosols on cirrus clouds and anthropogenic forcing
anthropogenic aerosols cirrus clouds anthropogenic forcing
2009/3/13
Cirrus clouds have a net warming effect on the atmosphere and cover about 30% of the Earth's area. Aerosol particles initiate ice formation in the upper troposphere through modes of action that includ...
The effect of changes in natural and anthropogenic deposition on modelling recovery from acidification
climate change dynamic modelling run-off chemistry
2009/3/12
The multi-layer dynamic soil chemistry SAFE model was used to study the dynamics of recovery in the F1 catchment at Lake Gårdsjön, Sweden.
Gas phase precursors to anthropogenic secondary organic aerosol: detailed observations of 1,3,5-trimethylbenzene photooxidation
Gas phase precursors anthropogenic secondary organic aerosol 1,3,5-trimethylbenzene photooxidation
2009/3/12
A series of photooxidation experiments were conducted in an atmospheric simulation chamber in order to investigate the oxidation mechanism and secondary organic aerosol (SOA) formation potential of th...
Weekly cycle of NO2 by GOME measurements: a signature of anthropogenic sources
Weekly cycle NO2 anthropogenic sources
2009/3/11
Nitrogen oxides (NO+NO2=NOx and reservoir species) are important trace gases in the troposphere with impact on human health, atmospheric chemistry and climate. Besides natural sources (lightning, soil...
Origin of anthropogenic hydrocarbons and halocarbons measured in the summertime european outflow
anthropogenic hydrocarbons summertime european outflow
2009/3/11
During the Mediterranean Intensive Oxidant Study MINOS in August 2001, 87 air samples were collected at the ground-based station Finokalia (35°19'N, 25°40'E) on the north coast of Crete and subsequent...
The isotopic fingerprint of the pre-industrial and the anthropogenic N2O source
isotopic fingerprint pre-industrial anthropogenic N2O
2009/3/10
We have performed high-precision measurements of the 18O and position dependent 15N isotopic composition of N2O from Antarctic firn air samples. By comparing these data to simulations carried out with...
The impact of anthropogenic chlorine emissions, stratospheric ozone change and chemical feedbacks on stratospheric water
anthropogenic chlorine emissions stratospheric ozone change chemical feedbacks
2009/2/25
Mixing ratios of water (H2O) in the stratosphere appear to increase due to increased input of H2O and methane from the troposphere and due to intensified oxidation of CH4 in the stratosphere, but many...
A simple modeling approach to study the regional impact of a Mediterranean forest isoprene emission on anthropogenic plumes
Mediterranean forest isoprene emission anthropogenic plumes
2009/2/12
Research during the past decades has outlined the importance of biogenic isoprene emission in tropospheric chemistry and regional ozone photo-oxidant pollution. The first part of this article focuses ...
Anthropogenic carbon distribution in the eastern South Pacific Ocean
Anthropogenic carbon distribution eastern South Pacific Ocean
2010/1/19
We present results of the CO2/carbonate system from the BIOSOPE cruise in the Eastern South Pacific Ocean, in an area not sampled previously. In particular, we present estimates of the anthropogenic c...
Radiocarbon analysis in an Alpine ice core: record of anthropogenic and biogenic contributions to carbonaceous aerosols in the past（1650–1940）
Radiocarbon analysis Alpine ice core anthropogenic and biogenic contributions carbonaceous aerosols
2009/1/21
Long-term concentration records of carbonaceous particles (CP) are of increasing interest in climate research due to their not yet completely understood effects on climate. Nevertheless, only poor dat...
A mass spectrometric study of secondary organic aerosols formed from the photooxidation of anthropogenic and biogenic precursors in a reaction chamber
mass spectrometric study secondary organic aerosols photooxidation of anthropogenic biogenic precursors reaction chamber
2009/1/20
An Aerodyne Aerosol Mass Spectrometer (AMS) has been utilised to provide on-line measurements of the mass spectral signatures and mass size distributions of the oxidation products resulting from irrad...
Temporal variability of the anthropogenic CO2 storage in the Irminger Sea
Temporal variability anthropogenic CO2 storage Irminger Sea
2010/1/18
The anthropogenic CO2 (Cant) estimates from cruises spanning more than two decades (1981–2006) in the Irminger Sea area of the North Atlantic Subpolar Gyre reveal a large variability in the Cant stora...
Anthropogenic and biophysical contributions to increasing atmospheric CO2 growth rate and airborne fraction
Anthropogenic and biophysical contributions atmospheric CO2 growth rate airborne fraction
2010/1/18
We quantify the relative roles of natural and anthropogenic influences on the growth rate of atmospheric CO2 and the CO2 airborne fraction, considering both interdecadal trends and interannual variabi...