ARTICLES on INDUSTRIAL EMISSIONS & CLIMATE CHANGE

工业排放与气候变化

Presented by Roger J. CHENG, ASRC UALBANY SUNY

OBAMA TAKES on POWER PLANTS as part of

NEW CLIMATE PLAN

(Reuters) - President Barack Obama tried to revive his stalled climate change agenda on Tuesday, promising new rules to cut carbon emissions from U.S. power plants andother domestic actions including support for renewable energy.

http://www.reuters.com/article/2013/06/25/us-usa-climate-obama-idUSBRE95O0G120130625

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奥巴马宣布将限制电厂碳排球变暖放量以缓解全球气候变暖的危机

美国总统奥巴马周25日宣布一揽子计划,限制美国发电厂的碳排放量,协助缓解全球气候变暖的 据报道 奥 巴马当天在乔治城大学发表演说时指出,目前已有法例规管发电厂排放有害物质如砷、水, 银、铅及其他物质的数量但 没有限制它们释出被指导致气候暖化元凶的二氧化碳排放量,因此有需要改变这做法。
奥巴马指出,所有美国人承担发电厂排放二氧化碳的苦果。因此,他的政策会以减少使用污染能源,加大洁净能源, 及节约用 能为主导。他还宣布计划扩大再生能源项目,改善防洪设施,并呼吁达成国际气候协议。
—奥巴马在今年1月就职演说中表示,他将在第二任期对气候变化采取行
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工业排放与气候变化

 

 

The MICRO-WORLD in our ENVIRONMENT

INDUSTRIAL EMISSIONS & CLIMATE CHANGE

工业排放与气候变化

ROGER J. CHENG: ASRC UNIVERSITY at ALBANY SUNYA

郑均华 研究员   纽约州立大学 大气科学研究中心

 

Effect of Graphitic Carbon on the Albedo of Clouds
  • Journal of the Atmospheric Sciences
  • Volume 41, Issue 21 (November 1984)
Petr Chýlek and V. Ramaswamy
National Center for Atmospheric Research,
Boulder, CO 80307
Roger J. CHENG
Atmospheric Sciences Research Center,
State University of New York,

ABSTRACT

We examine the radioactive properties of clouds containing submicron soot Particles as impurities. The soot particles are assumed to be distributed Randomly inside water drops. The refractive index of this inhomogeneous mixture is evaluated using the mixing rule for a composite medium. Single and multiple scattering properties are obtained using, respectively the Mie theory and the Delta-Eddington approximation.

The presence of soot enhances the visible light absorption in clouds. A soot volume fraction of 7 × 10"6 in a model stratus cloud increases the value of the single scattering co-albedo from 10"7 (the value corresponding to that of pure water) to 10"3.

  • Journal of the Atmospheric Sciences
  • Volume 41, Issue 21 (November 1984)

 

From Wikipedia, the free encyclopedi


Dr. Petr Chylek is a researcher for Space and Remote Sensing Sciences at Los Alamos National Laboratory.

Prior to becoming a government researcher in 2001, Chylek was a Professor at several US and Canadian universities

 including SUNY Albany, Purdue University, University of Oklahoma and Dalhousie University in Halifax, Canada.


Chylek has published over 100 first authored scientific papers in remote sensing, atmospheric radiation,

climate change, cloud and aerosol physics, applied laser physics and ice core analysis.

His work has been cited more than 4000 times. Chylek is best known for his work in remote sensing, aerosols and climate change.

 

 

  • OPTICAL PROPERTIES and MASS CONCENTRATION
  • of CARBONACEOUS SMOKES
  • APPLIED OPTICS
  • VOL. 20, NO. 17--SEPT-1981
  • Petr Chylek and V. Ramaswamy
  • Department of Meteorology,
  • Massachusetts Institute of Technology,
  • Cambridge, Massachusetts
  • Roger J. Cheng
  • Atmospheric Sciences Research Center
  • State University of New York
  • Albany, New York

ABSTRACT

Carbonaceous smokes are produced by a variety of combustion sources like chimney stack furnaces, industrial flames, aircraft and rocket engines, all mote vehicles and especially diesel engines. The soot formation results from incomplete combustion of fuels containing carbon. The carbonaceous particles contribute to local air pollution of densely populated and industrial areas, as well as to global pollution possibly affecting the earth's climate. For these reasons there is a need to measure and eventually routinely monitor the mass concentration of these pollutants released into the atmosphere. In this paper we propose a simple method (based upon the extinction measurement at two wavelengths) to determine accurately the mass concentration of carbonaceous smokes

  • APPLIED OPTICS
  • VOL. 20, NO. 17--SEPT-1981
  • CATALYTIC REACTIVITY
    • of AIRBORNE PARTICULATE MATERIAL
    • CONF. on CARBONACEOUS PARTICLES
    • in the ATMOSPHERE
    • NATIONAL SCIENCE FOUNDATION and LAWERENCE BERKELEY LAB.
    • BERKELEY, CALIFORNIA--MARCH 1978

 

  • RESEARCHERS from:
  • RENSSELAR POLYTECHNIC INSTITUTE
  • and ASRC-SUNYA

INTRODUCTION

 

A cooperative effort between research groups at the Atmospheric Sciences Research Center of the State University of New York and the Surface Studies Laboratory at Rensselaer Polytechnic Institute is currently under way. The ultimate aim of this effort is to assess the role that heterogeneous catalysis of atmospheric chemical reactions at the surface of airborne particulate material plays in the overall turnover rate of pollutant gases in the atmosphere. The approach to the problem is twofold. On the one hand, atmospheric sampling techniques are being used to collect airborne particulate materials, such as those found in fossil fuel fired power plant boilers. These particles are characterized in terms of morphology, size distribution and chemical composition both bulk and surface. Samples of these particles are then prepared for chemical kinetic studies in the molecular beam surface research system, to be described below. In a concurrent study, samples are being prepared to simulate those aspects of the surface composition of the airborne particulates that are felt to be of possible significance catalytically. These samples, after characterization, are being exposed to reactant gas mixtures in the molecular beam system. A combination of mass spectrometric detection of desorbed product fluxes and Auger electron spectrometric detection of non-volatile surface products is being used to characterize the rate and extent of the surface reaction. It is hoped that this combination of techniques will lead to unequivocal conclusions as to the rate-limiting steps in the chemical reactions studied. In the work to date, we have been investigating the overall reaction SO/2 + O/2 +SO/3 + Sulfates at the surfaces of both real stack particulate samples and laboratory- prepared samples, prepared so as to simulate the surface composition of the real particulates. The aim of the work is to assess the role that catalytic reaction on particulate surfaces plays in the turnover of SO/2 in power plant plumes. The techniques used are applicable to a wide range of reactions on a wide range of surfaces. The aim of the present paper is as much to explain the potentialities and limitations of the techniques employed as to report results on the specific system studied to date.

  • CONF. on CARBONACEOUS PARTICLES
  • in the ATMOSPHERE
  • NATIONAL SCIENCE FOUNDATION and LAWERENCE BERKELEY LAB.
  • BERKELEY, CALIFORNIA--MARCH 1978

纽约州立大学,大气科学研究中心 郑均华研究员主持的科研项目

 

ARTICLES on INDUSTRIAL EMISSIONS & CLIMATE CHANGE

ROGER J. CHENG-ASRC-UNIVERSITYat ALBANY-SUNYA

A JOURNEY through MICROSCOPE
exploring
The UNSEEN SECRETS of our ENVIRONMENT

WHO want to KNOW MORE the SECRETS of OUR ENVIRONMENT and
WHO wish to SEE the INDUSTRIAL EMISSIONS, ACID RAIN and the ECOLOGICAL EFFECTS on our ENVIRONMENT.
 
 

INDUSTRIAL EMISSIONS and CLIMATE CHANGE

工业排放与气候变化

Roger J. CHENG- ASRC UALBANY SUNY

郑均华 研究员   纽约州立大学 大气科学研究中心