We investigated the anthropogenic and volcanic contributions to sulfate aerosol in the stratosphere through modeling and analysis of satellite data. We use a global model GOCART to simulate SO2 and sulfate aerosol in the period of 2000 to 2010, during which numerous volcanic eruptions occurred although nothing like the magnitudes of El Chichon or Pinatubo. We compared the model results with the column SO2 data from OMI and stratospheric SO2 data from MLS instrument on Aura satellite and the...
Topics: NASA Technical Reports Server (NTRS), MAN ENVIRONMENT INTERACTIONS, VOLCANOES, PERIODIC VARIATIONS,...
Aerosols that serve as cloud condensation nuclei (CCN) and ice nuclei (IN) have the potential to profoundly influence precipitation processes. Furthermore, changes in orographic precipitation have broad implications for reservoir storage and flood risks. As part of the CalWater I field campaign (2009-2011), the impacts of aerosol sources on precipitation were investigated in the California Sierra Nevada. In 2009, the precipitation collected on the ground was influenced by both local biomass...
Topics: NASA Technical Reports Server (NTRS), ANNUAL VARIATIONS, AEROSOLS, OROGRAPHY, ENVIRONMENT EFFECTS,...
Recent results from the GOCART and GMI models are reported. They include: Updated emission inventories for anthropogenic and volcano sources, satellite-derived vegetation index for seasonal variations of dust emission, MODIS-derived smoke AOT for assessing uncertainties of biomass-burning emissions, long-range transport of aerosol across the Pacific Ocean, and model studies on the multi-decadal trend of regional and global aerosol distributions from 1980 to 2010, volcanic aerosols, and nitrate...
Topics: NASA Technical Reports Server (NTRS), MODIS (RADIOMETRY), OCEAN MODELS, ATMOSPHERIC CHEMISTRY,...
This document describes the gridded output files produced by the Goddard Earth Observing System version 5 (GEOS-5) Goddard Aerosol Assimilation System (GAAS) from July 2002 through December 2014. The MERRA Aerosol Reanalysis (MERRAero) is produced with the hydrostatic version of the GEOS-5 Atmospheric Global Climate Model (AGCM). In addition to standard meteorological parameters (wind, temperature, moisture, surface pressure), this simulation includes 15 aerosol tracers (dust, sea-salt,...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, MODIS (RADIOMETRY), METEOROLOGICAL PARAMETERS,...
Mendeley Climate Change Library
25
25
Jul 5, 2019
07/19
by
Casey D. Bray; William Battye; Viney P. Aneja; Daniel Q. Tong; Pius Lee; Youhua Tang
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This study quantifies ammonia (NH 3 ) emissions from biomass burning from 2005 to 2015 across the continental US (CONUS) and compares emissions from biomass burning with the US Environmental Protection Agency (EPA) National Emissions Inventory (NEI), the Fire Inventory from the National Center for Atmospheric Research (FINN) and the Global Fire Emissions Database (GFED). A statistical regression model was developed in order to predict NH 3 emissions from biomass burning using a combination of...
Topics: Ammonia, Biomass burning, Fire emissions, National emissions inventory, Wildfires
Ozone vertical profile measurements obtained from ozonesondes flown at Fiji, Samoa, Tahiti and the Galapagos are used to characterize ozone in the troposphere over the tropical Pacific. There is a significant seasonal variation at each of these sites. At sites in both the eastern and western Pacific, ozone is highest at almost all levels in the troposphere during the September-November season and lowest during, March-May. There is a relative maximum at all of the sites in the mid-troposphere...
Topics: NASA Technical Reports Server (NTRS), OZONE, TROPOSPHERE, OBSERVATION, ANNUAL VARIATIONS, BIOMASS...
46
46
Oct 29, 2009
10/09
by
NASA/Goddard Space Flight Center Scientific Visualization Studio
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Aura's instruments study tropospheric, or low-level atmospheric chemistry and will monitor of air pollution around the world on a daily basis. Aura measures five of the six 'Criteria Pollutants' identified by the U.S. Environmental Protection Agency. The complexity of pollution transport makes it difficult to quantify how much industry contributes to poor local air quality. Note: This animation shows ozone in the troposphere from September 28, 2004 to November 6, 2004. Areas of red represent...
Topics: Atmospheric science, Ozone, Earth Science, Human Dimensions, Environmental Impacts, Biomass...
Source: http://svs.gsfc.nasa.gov/goto?3071
Carbon monoxide is considered mission critical (TRACE-P NRA) because it is one of the gases involved in controlling the oxidizing power of the atmosphere and, as a tracer gas, is valuable in interpreting mission data sets. Carbon monoxide exhibits interannual differences, suggesting relatively short-term imbalances in sources and sinks. Sources of CO are dominated by fossil fuel combustion, biomass burning, and the photochemical oxidation of CH4 and nonmethane hydrocarbons while reaction with...
Topics: NASA Technical Reports Server (NTRS), CARBON MONOXIDE, METHANE, BIOMASS BURNING, ANNUAL VARIATIONS,...
The chemical link between isoprene and formaldehyde (HCHO) is a strong, non-linear function of NOx (= 27 NO + NO2). This relationship is a linchpin for top-down isoprene emission inventory verification from orbital HCHO column observations. It is also a benchmark for overall mechanism performance with regard to VOC oxidation. Using a comprehensive suite of airborne in situ observations over the Southeast U.S., we quantify HCHO production across the urban-rural spectrum. Analysis of isoprene and...
Topics: NASA Technical Reports Server (NTRS), FORMALDEHYDE, METHYL COMPOUNDS, BUTADIENE, OXIDATION,...
Pollution is often considered a localized phenomenon, but it is now clear that it travels from region-to-region, country to country, and even continent to continent. In addition to urban pollution in developed countries, large emissions from developing nations and large-scale biomass fires add to the global pollution burden. Ozone and aerosols are two components of pollution that contribute to radiative forcing of the earth s climate. In turn, as climate changes, rates of chemical and...
Topics: NASA Technical Reports Server (NTRS), GLOBAL AIR POLLUTION, ATMOSPHERIC CHEMISTRY, CLIMATOLOGY,...
Many remote sensing techniques and passive sensors have been developed to measure global aerosol properties. While instantaneous comparisons between pixel-level data often reveal quantitative differences, here we use Empirical Orthogonal Function (EOF) analysis, also known as Principal Component Analysis, to demonstrate that satellite-derived aerosol optical depth (AOD) data sets exhibit essentially the same spatial and temporal variability and are thus suitable for large-scale studies....
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, BIOMASS BURNING, REMOTE SENSING, SEA-VIEWING WIDE...
Meteorological conditions, extremely conducive to fire development and spread in the spring of 1987, resulted in forest fires burning over extremely large areas in the boreal forest zone in northeastern China and the southeastern region of Siberia. The great China fire, one of the largest and most destructive forest fires in recent history, occurred during this period in the Heilongjiang Province of China. Satellite imagery is used to examine the development and areal distribution of 1987...
Topics: NASA Technical Reports Server (NTRS), CHINA, FOREST FIRES, SATELLITE OBSERVATION, SIBERIA,...
Hydrogen cyanide is not usually considered in atmospheric chemical models. The paper presents three reasons why hydrogen cyanide is likely to be significant for atmospheric chemistry. Firstly, HCN is a product and marker of biomass burning. Secondly, it is also likely that lightning is producing HCN, and as HCN is sparingly soluble it could be a useful long-lived "smoking gun" marker of lightning activity. Thirdly, the chemical decomposition of HCN leads to the production of small...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC CHEMISTRY, CYANIDES, HYDROGEN, HYDROCYANIC ACID,...
This research uses the critical reflectance technique, a space-based remote sensing method, to measure the spatial distribution of aerosol absorption properties over land. Choosing two regions dominated by biomass burning aerosols, a series of sensitivity studies were undertaken to analyze the potential limitations of this method for the type of aerosol to be encountered in the selected study areas, and to show that the retrieved results are relatively insensitive to uncertainties in the...
Topics: NASA Technical Reports Server (NTRS), BIOMASS BURNING, AEROSOLS, SPATIAL DISTRIBUTION, ABSORPTION...
Satellite remote sensing is providing us tremendous opportunities to measure the fire radiative energy (FRE) release rate or power (FRP) from open biomass burning, which affects many vegetated regions of the world on a seasonal basis. Knowledge of the biomass burning characteristics and emission source strengths of different (particulate and gaseous) smoke constituents is one of the principal ingredients upon which the assessment, modeling, and forecasting of their distribution and impacts...
Topics: NASA Technical Reports Server (NTRS), FIRES, IMAGING SPECTROMETERS, MODIS (RADIOMETRY), SATELLITE...
The northern sub-Saharan African (NSSA) region, bounded by the Sahara, Equator, and the West and East African coastlines, is subjected to intense biomass burning every year during the dry season. This is believed to be one of the drivers of the regional carbon and energy cycles, with serious implications for the water cycle anomalies that probably contribute to drought and desertification. In this presentation, we will discuss a new multi-disciplinary research in the NSSA region, review...
Topics: NASA Technical Reports Server (NTRS), AFRICA, BIOMASS BURNING, DROUGHT, GRASSLANDS, CLIMATE CHANGE,...
As part of the TRACE-P mission, ozone vertical profile measurements were made at a number of locations in the North Pacific. At most of the sites there is also a multi-year record of ozonesonde observations. From seven locations in the western Pacific (Hong Kong; Taipei; Jeju Island, Korea; and Naha, Kagoshima, Tsukuba, and Sapporo, Japan), a site in the central Pacific (Hilo, HI), and a site on the west coast of the U.S. (Trinidad Head, CA) both a seasonal and event specific picture of...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC SOUNDING, OZONOMETRY, TROPOSPHERE, PACIFIC OCEAN,...
Fires in South America cause forest degradation and contribute to carbon emissions associated with land use change. Here we investigated the relationship between year-to-year changes in satellite-derived estimates of fire activity in South America and sea surface temperature (SST) anomalies. We found that the Oceanic Ni o Index (ONI) was correlated with interannual fire activity in the eastern Amazon whereas the Atlantic Multidecadal Oscillation (AMO) index was more closely linked with fires in...
Topics: NASA Technical Reports Server (NTRS), FOREST FIRES, SEA SURFACE TEMPERATURE, TELECONNECTIONS...
The goal of this REASoN applications and technology project is to deliver and use Earth Science Enterprise (ESE) data and tools in support of air quality management. Its scope falls within the domain of air quality management and aims to develop a federated air quality information sharing network that includes data from NASA, EPA, US States and others. Project goals were achieved through a access of satellite and ground observation data, web services information technology, interoperability...
Topics: NASA Technical Reports Server (NTRS), AIR QUALITY, DATA PROCESSING, EARTH SCIENCES, MODIS...
The modelers point of view is that the aerosol problem is one of sources, evolution, and sinks. Relative to evolution and sink processes, enormous attention is given to the problem of aerosols sources, whether inventory based (e.g., fossil fuel emissions) or dynamic (e.g., dust, sea salt, biomass burning). On the other hand, aerosol losses in models are a major factor in controlling the aerosol distribution and lifetime. Here we shine some light on how aerosol sinks are treated in modern...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, ATMOSPHERIC MODELS, PARAMETERIZATION, SINKS, DUST,...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, ASIA, ATMOSPHERIC COMPOSITION, PARTICULATES,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, MESOSCALE PHENOMENA, ATMOSPHERIC GENERAL...
We conduct several sets of simulations with a version of NASA's Goddard Earth Observing System, version 5, (GEOS-5) Atmospheric Global Climate Model (AGCM) equipped with a two-moment cloud microphysical scheme to understand the role of biomass burning aerosol (BBA) emissions in Southeast Asia (SEA) in the pre-monsoon period of February-May. Our experiments are designed so that both direct and indirect aerosol effects can be evaluated. For climatologically prescribed monthly sea surface...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, RAIN, BIOMASS BURNING, ATMOSPHERIC CIRCULATION,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, EXTINCTION, CHARACTERIZATION, OPTICAL THICKNESS,...
An ensemble approach is used to examine the sensitivity of smoke loading and smoke direct radiative effect in the atmosphere to uncertainties in smoke emission estimates. Seven different fire emission inventories are applied independently to WRF-Chem model (v3.5) with the same model configuration (excluding dust and other emission sources) over the northern sub-Saharan African (NSSA) biomass-burning region. Results for November and February 2010 are analyzed, respectively representing the start...
Topics: NASA Technical Reports Server (NTRS), MESOSCALE PHENOMENA, SMOKE, BIOMASS BURNING, FIRES,...
57
57
Oct 29, 2009
10/09
by
NASA/Goddard Space Flight Center Scientific Visualization Studio
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Aura's instruments study tropospheric, or low-level atmospheric chemistry and will monitor air pollution around the world on a daily basis. Aura measures five of the six 'Criteria Pollutants' identified by the U.S. Environmental Protection Agency. Note: This animation shows how ozone in the Troposphere changes from September 28, 2004 to November 6, 2004. Areas of Red represent high levels (50+ DU) and areas of blue represent low areas (20 DU). Animator: Lori Perkins (NASA/GSFC), Stuart A....
Topics: Atmospheric science, Ozone, Earth Science, Human Dimensions, Environmental Impacts, Biomass...
Source: http://svs.gsfc.nasa.gov/goto?3070
Ground, airborne and spaceborne data were collected for a 450 ha prescribed fire implemented on 18 October 2011 at the Henry W. Coe State Park in California. The integration of various data elements allowed near coincident active fire retrievals to be estimated. The Autonomous Modular Sensor-Wildfire (AMS) airborne multispectral imaging system was used as a bridge between ground and spaceborne data sets providing high quality reference information to support satellite fire retrieval error...
Topics: NASA Technical Reports Server (NTRS), AIRBORNE EQUIPMENT, BIOMASS BURNING, SPACECRAFT INSTRUMENTS,...
Using Aura MLS data we have identified the stratospheric tape recorder in carbon monoxide (CO). Unlike the water vapor tape recorder, which is controlled by upper troposphere processes, the CO tape recorder is linked to seasonal biomass burning. Since CO has a lifetime of only a few months, the CO tape recorder barely extends above 20 km. The tape head for CO appears to be close to 360K near the same location as the water vapor tape head [Read et al, 20041. Both tape heads are below the...
Topics: NASA Technical Reports Server (NTRS), CARBON MONOXIDE, TAPE RECORDERS, STRATOSPHERE, MICROWAVE...
Biomass burning is an important source of chemical precursors of tropospheric ozone. In the tropics, biomass burning produces ozone enhancements over broad regions of Indonesia, Africa, and South America including Brazil. Fires are intentionally set in these regions during the dry season each year to clear cropland and to clear land for human/industrial expansion. In Indonesia enhanced burning occurs during dry El Nino conditions such as in 1997 and 2006. These burning activities cause...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC COMPOSITION, BIOMASS BURNING, TROPOSPHERE, OZONE,...
No abstract available
Topics: NASA Technical Reports Server (NTRS), CLIMATE MODELS, BIAS, DATA PRODUCTS, SATELLITE INSTRUMENTS,...
This report presents a summary, of the participation in the 6-week field study in southern Africa. During the field study there were flown 119.02 research hours (31 research flights). In these flights the researchers obtained many unique data sets for evaluating the effects of biomass burning and other sources of particles and gases on the climate of southern Africa, and obtained simultaneous measurements with NASA ER-2 and Terra overflights. They also analyzed portions of the large data sets...
Topics: NASA Technical Reports Server (NTRS), AFRICA, BIOMASS BURNING, MAN ENVIRONMENT INTERACTIONS,...
Clouds, aerosols, and their interactions are widely considered to be key uncertainty components in our current understanding of the Earth's atmosphere and radiation budget. The work presented here is focused on the quasi-permanent marine boundary layer . (MBL) clouds off the southern Atlantic coast of Africa and the effects on MODIS cloud optical property retrievals (MOD06) of an overlying absorbing smoke layer. During much of August and September, a persistent smoke layer resides over this...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, ATMOSPHERIC BOUNDARY LAYER, AIR WATER INTERACTIONS,...
Aerosols are small particles suspended in the atmosphere and have a variety of natural and man-made sources. Knowledge of aerosol optical depth (AOD), which is a measure of the amount of aerosol in the atmosphere, and its change over time, is important for multiple reasons. These include climate change, air quality (pollution) monitoring, monitoring hazards such as dust storms and volcanic ash, monitoring smoke from biomass burning, determining potential energy yields from solar plants,...
Topics: NASA Technical Reports Server (NTRS), SATELLITE OBSERVATION, SATELLITE INSTRUMENTS, AEROSOLS, AQUA...
The presence of absorbing aerosol layers above clouds is unambiguously detected by the TOMS/OMI UV Aerosol Index (AI) that uses satellite observations at two near-UV channels. A sensitivity study using radiative transfer calculations shows that the AI signal of resulting from the presence of aerosols above clouds is mainly driven by the aerosol absorption optical depth and the optical depth of the underlying cloud. Based on these results, an inversion algorithm has been developed to retrieve...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, BIOMASS BURNING, TOTAL OZONE MAPPING SPECTROMETER,...
During the southern African dry season, regional haze from mixed industrial pollution, biomass burning aerosol and gases from domestic and grassland fires, and biogenic sources from plants and soils is worsened by a semi-permanent atmosphere gyre over the subcontinent. These factors were a driver of several major international field campaigns in the 1990s and early 2000s, and attracted many scientists to the region. Some researchers were interested in understanding fundamental processes...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC CHEMISTRY, AEROSOLS, BIOMASS BURNING,...
We present multi-model global datasets of nitrogen and sulfate deposition covering time periods from 1850 to 2100, calculated within the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP). The computed deposition fluxes are compared to surface wet deposition and ice-core measurements. We use a new dataset of wet deposition for 2000-2002 based on critical assessment of the quality of existing regional network data. We show that for present-day (year 2000 ACCMIP time-slice),...
Topics: NASA Technical Reports Server (NTRS), ATMOSPHERIC CHEMISTRY, BIOMASS BURNING, CLIMATE MODELS,...
The accurate measurement of ecosystem biomass is of great importance in scientific, resource management and energy sectors. In particular, biomass is a direct measurement of carbon storage within an ecosystem and of great importance for carbon cycle science and carbon emission mitigation. Remote Sensing is the most accurate tool for global biomass measurements because of the ability to measure large areas. Current biomass estimates are derived primarily from ground-based samples, as compiled...
Topics: NASA Technical Reports Server (NTRS), BIOMASS, REMOTE SENSING, FOREST FIRES, BIOMASS BURNING,...
A synergy of numerical simulation, ground-based measurement and satellite observation was applied to evaluate the impact of biomass burning originating from Southeast Asia (SE Asia) within the framework of NASA's 2006 Biomass burning Aerosols in Southeast Asia: Smoke Impact Assessment (BASE-ASIA). Biomass burning emissions in the spring of 2006 peaked in MarcheApril when most intense biomass burning occurred in Myanmar, northern Thailand, Laos, and parts of Vietnam and Cambodia. Model...
Topics: NASA Technical Reports Server (NTRS), BIOMASS BURNING, AIR QUALITY, SOUTHEAST ASIA, AEROSOLS,...
In this paper, we present recent field studies conducted by NASA's SMART-COMMIT (and ACHIEVE, to be operated in 2013) mobile laboratories, jointly with distributed ground-based networks (e.g., AERONET, http://aeronet.gsfc.nasa.gov/ and MPLNET, http://mplnet.gsfc.nasa.gov/) and other contributing instruments over northern Southeast Asia. These three mobile laboratories, collectively called SMARTLabs (cf. http://smartlabs.gsfc.nasa.gov/, Surface-based Mobile Atmospheric Research & Testbed...
Topics: NASA Technical Reports Server (NTRS), BIOMASS BURNING, AEROSOLS, ANNUAL VARIATIONS, SOUTHEAST ASIA,...
The unique advantage of OMI observations for the characterization of aerosol properties is the availability of radiance measurement at near UV wavelengths. In spite of its coarse spatial resolution, OMI's near UV observations make possible the characterization of aerosol absorption properties. This capability is unavailable in any of the currently operational high spatial resolution aerosol sensors. A unique decadal record of aerosol absorption optical depth and single scattering albedo from...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, REMOTE SENSING, EARTH OBSERVATIONS (FROM SPACE),...
Biomass burning is an event that occurs globally and encompasses both human-initiated and naturally-occurring fires. It is estimated that 3 billion metric tons of biomass are burned every year worldwide (Curtis 2002). Societies have used these burning techniques for cooking and heating, clearing land for agricultural use, and removing excess biomass from grazing and croplands (Levine 1991). Our study focuses on the state of Louisiana and its commonly occurring methods of sugarcane and marsh...
Topics: NASA Technical Reports Server (NTRS), AIR QUALITY, BIOMASS BURNING, FOREST MANAGEMENT, LAND USE,...
304
304
May 31, 2011
05/11
by
Laird, William M.; Fauconneau, Gu
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Previous investigations have demonstrated the importance of the effect of linearly varying axial or in-plane loading on the vibration characteristics of beams and flat plates. It has already been established that the problem reduces to solving for the eigenvalues of a fourth order, variable coefficient differential equation that can not be solved in closed form. Beginning with a variational representation of the eigenvalue problem, methods are discussed by which both upper and lower bounds for...
Topics: RADIATIVE TRANSFER, UNITED STATES, BIOMASS BURNING, SIZE DISTRIBUTION, HUMIDITY, REFRACTIVITY,...
261
261
Jun 9, 2011
06/11
by
Finzi, Alberto; Ingrand, Felix; Muscettola, Nicol
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This paper reports on the design and implementation of a real-time executive for a mobile rover that uses a model-based, declarative approach. The control system is based on the Intelligent Distributed Execution Architecture (IDEA), an approach to planning and execution that provides a unified representational and computational framework for an autonomous agent. The basic hypothesis of IDEA is that a large control system can be structured as a collection of interacting agents, each with the...
Topics: CARBON MONOXIDE, METHANE, BIOMASS BURNING, ANNUAL VARIATIONS, AIR MASSES, PHOTOCHEMICAL REACTIONS,...
Mendeley Climate Change Library
28
28
Jul 6, 2019
07/19
by
Zhenyu Hong; Han Zhang; Yanru Zhang; Lingling Xu; Taotao Liu; Hang Xiao; Youwei Hong; Jinsheng Chen; Mengren Li; Junjun Deng; Xin Wu; Xiaoqiu Chen
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Secondary organic aerosol (SOA) plays an important role in global climate change and air quality. PM 2.5 (particles with aerodynamic diameters ≤2.5 μm) samples were collected at a mountainous forest site (Mt. Wuyi) in southeastern China between November 2015 and July 2016. Fourteen PM 2.5 -bound SOA tracers, including isoprene, α/β‑pinene, β‑caryophyllene, and toluene, were measured using the gas-chromatography–mass-spectrometry method. The total concentrations of the isoprene,...
Topics: Biomass burning, Mountainous forest area, PM 2.5, Secondary organic aerosol (SOA) tracers,...
The Aerosols99 cruise took place during the period from January 14, to February 8 1999 on the R/V Ron Brown. The cruise track was almost a straight line from Norfolk, Va. to Cape Town, South Africa and afforded the opportunity to sample several different aerosol regimes over the North and South Atlantic. A Micro Pulse LIDAR system was used continually during this cruise to profile the aerosol vertical structure. Inversions of this data illustrated a varying vertical structure depending on the...
Topics: NASA Technical Reports Server (NTRS), OPTICAL RADAR, ABSORPTION SPECTROSCOPY, AIR MASSES, BIOMASS...
Atmospheric aerosols have a complex internal chemical composition and optical properties. Therefore it is difficult to model their impact on redistribution and absorption of solar radiation, and the consequent impact on atmospheric dynamics and climate. The use in climate models of isolated aerosol parameters retrieved from satellite data (e.g. optical thickness) may result in inconsistent calculations, if the model assumptions differ from these of the satellite retrieval schemes. Here we...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, ATMOSPHERIC PHYSICS, ATMOSPHERIC RADIATION, BIOMASS...
High altitude smoke-plumes from large, explosive fires were discovered in the late 1990sThey can now be observed with unprecedented detail from space-borne instruments with high vertical resolution in the UTLS such as CALIOP, MLS and ACE. These events inject large quantities of pollutants into a relatively clean and dry environment They serve as unique natural experiments with which to understand, using chemical transport and composition-climate models, the chemical and radiative impacts of...
Topics: NASA Technical Reports Server (NTRS), HIGH ALTITUDE, FIRES, SATELLITE-BORNE INSTRUMENTS, HIGH...
50
50
Oct 29, 2009
10/09
by
NASA/Goddard Space Flight Center Scientific Visualization Studio
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Aura's instruments study tropospheric, or low-level atmospheric chemistry. Many different organizations monitor regional areas of the troposphere, but Aura is the first to record daily global measurements. Note: This animation shows how ozone in the Troposphere changes from September 28, 2004 to November 6, 2004. Areas of Red represent high levels (50+ DU) and areas of blue represent low areas (20 DU). Animator: Lori Perkins (NASA/GSFC), Stuart A. Snodgrass (GST). Scientist: Mark Schoeberl...
Topics: Atmospheric science, Ozone, Earth Science, Human Dimensions, Environmental Impacts, Biomass...
Source: http://svs.gsfc.nasa.gov/goto?3068
Our research efforts have addressed theoretical and numerical modeling of sources emissions and transport processes of trace gases and aerosols emitted by biomass burning on the central of Brazil and Amazon basin. For this effort we coupled all Eulerian transport model with the mesoscale atmospheric model RAMS (Regional Atmospheric Modeling System).
Topics: NASA Technical Reports Server (NTRS), BIOMASS BURNING, MATHEMATICAL MODELS, MESOSCALE PHENOMENA,...
The Southern African Regional Science Initiative (SAFARI 2000) is an international science project investigating the southern African earth-atmosphere-human system. The experiment was conducted over a two-year period March 1999 - March 2001. The dry season field campaign (August-Steptember 2000) was the most intensive activity and involving over 200 scientists from 18 different nations. The main objectives of this campaign were to characterize and quantify the biogenic, pyrogenic and...
Topics: NASA Technical Reports Server (NTRS), AEROSOLS, TRACE CONTAMINANTS, POLLUTION TRANSPORT,...
