搜索结果: 1-15 共查到“大气科学 spring”相关记录32条 . 查询时间(0.115 秒)
Springtime rains can be a surprising source of pollen, according to research supported by the National Science Foundation.University of Iowa researchers report that tree pollen fragments remain in the...
Is Spring Getting Longer?UNH Research Points to a Lengthening “Vernal Window”
Spring Getting Longer UNH Research Points Vernal Window
2017/3/30
With the first day of spring around the corner, temperatures are beginning to rise, ice is melting, and the world around us is starting to blossom. Scientists sometimes refer to this transition from w...
SPRING SNOW A NO-GO?
SPRING SNOW NO-GO
2016/6/12
Spring snowpack, relied on by ski resorts and water managers throughout the Western United States, may be more vulnerable to a warming climate in coming decades, according to a new University of Utah ...
Assessment of fossil fuel carbon dioxide and other anthropogenic trace gas emissions from airborne measurements over Sacramento, California in spring 2009
fossil fuel carbon dioxide anthropogenic trace gas airborne measurements Sacramento California
2011/2/24
Direct quantification of fossil fuel CO2 (CO2ff) in atmospheric samples can be used to examine several carbon cycle and air quality questions. We collected in situ CO2, CO, and CH4 measurements and fl...
Evaluation of stratospheric chlorine chemistry for the Arctic spring 2005 using modelled and measured OClO column densities
stratospheric chlorine chemistry the Arctic spring 2005 OClO column densities
2011/2/24
Chlorine dioxide, OClO, column amounts retrieved from measurements of the SCIAMACHY satellite instrument are presented and validated by comparison with simultaneous ground-based DOAS observations. In ...
IASI carbon monoxide validation over the Arctic during POLARCAT spring and summer campaigns
IASI carbon monoxide the Arctic POLARCAT spring summer campaigns
2010/11/30
In this paper, we provide a detailed comparison between carbon monoxide (CO) data measured by the Infrared Atmospheric Sounding Interferometer (IASI)/MetOp and aircraft observations over the Arctic. T...
Trans-Pacific transport of reactive nitrogen and ozone to Canada during spring
Trans-Pacific reactive nitrogen ozone Canada spring
2010/9/21
We interpret observations from the Intercontinental Chemical Transport Experiment, Phase B (INTEX-B) in spring 2006 using a global chemical transport model (GEOS-Chem) to evaluate sensitivities of the...
Chemistry of hydrogen oxide radicals (HOx) in the Arctic troposphere in spring
hydrogen oxide radicals the Arctic troposphere spring
2010/8/13
We use observations from the April 2008 NASA ARCTAS aircraft campaign to the North American Arctic, interpreted with a global 3-D chemical transport model (GEOS-Chem), to better understand the sources...
A trajectory analysis of atmospheric transport of black carbon aerosols to Canadian high Arctic in winter and spring (1990–2005)
atmospheric transport black carbon aerosols Canadian high Arctic
2010/8/13
Black carbon (BC) particles accumulated in the Arctic troposphere and deposited on snow have been calculated to have significant effects on radiative forcing of the Arctic regional climate. Applying c...
Airborne measurements of aerosol optical properties related to early spring transport of mid-latitude sources into the Arctic
Airborne measurements aerosol optical properties mid-latitude sources the Arctic
2010/8/13
Airborne lidar and in-situ measurements of the aerosol properties were conducted between Svalbard Island and Scandinavia in April 2008. Evidence of aerosol transport from Europe and Asia is given. The...
Analysis of snow bidirectional reflectance from ARCTAS Spring-2008 Campaign
snow bidirectional reflectance ARCTAS Spring-2008 Campaign
2010/8/12
The spring 2008 Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) experiment was one of major intensive field campaigns of the International Polar Year aimed ...
Quantifying pollution inflow and outflow over East Asia in spring with regional and global models
Quantifying pollution East Asia spring regional and global models
2010/8/12
Understanding the exchange processes between the atmospheric boundary layer and the free troposphere is crucial for estimating hemispheric transport of air pollution. Most studies of hemispheric air p...
The Elemental Composition of Atmospheric Particles at Beijing during Asian Dust Events in Spring 2004
Dust Chemical element composition Asian dust event
2016/3/29
The chemical element composition of dust particles was characterized by the ground-based samples collected at Beijing
in the spring of 2004. Most of mineral and pollutant element concentrations in pa...
Source attribution and interannual variability of Arctic pollution in spring constrained by aircraft (ARCTAS, ARCPAC) and satellite (AIRS) observations of carbon monoxide
Arctic pollution spring constrained ARCTAS carbon monoxide
2010/2/21
We use aircraft observations of carbon monoxide (CO) from the NASA ARCTAS and NOAA ARCPAC campaigns in April 2008 together with multiyear (2003–2008) CO satellite data from the AIRS instrument and a g...
VOC measurements within a boreal forest during spring 2005: on the occurrence of elevated monoterpene concentrations during night time intense particle concentration events
VOC measurements boreal forest monoterpene concentrations
2009/11/19
In this study we present measurements of selected trace gases and aerosols made in a boreal forest during the BACCI-QUEST IV intensive field campaign in Hyytiälä, Finland in April 2005. Spri...