Special Issue "Biosphere-Atmosphere Interactions: Measurements, Models, and Model-Data Fusion"
A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Biosphere/Hydrosphere/Land - Atmosphere Interactions".
Deadline for manuscript submissions: closed (31 May 2017)
The exchange between vegetated land surface and the atmosphere covers a significant portion of the global cycle of energy, water, and greenhouse gases. Atmospheric exchange above ecosystems is an important component of the climate system from local to global scale. Since ecosystems and their respective exchange rates are influenced by varying environmental conditions, the atmospheric fluxes of carbon dioxide, water and energy, themselves, are also considered an indicator for changes of climate conditions quantified by related ecosystem responses such as alterations of net ecosystem exchange or changes in evaporation. Due to the functional interdependencies the biosphere-atmosphere interactions are not limited to ecosystem feedback but the biosphere, in return, affects the climate through changes of albedo, the energy budget, or changes in the concentration of atmospheric carbon dioxide driven by the biosphere–atmosphere exchange.
The complex interdependency of the ability of carbon uptake by vegetated areas and its drivers moved into the focus current and ongoing research. Giving its importance also in the context of climate change research, we invite papers that focus on the broad research field of biosphere-atmosphere exchange of greenhouse gases, energy, water, and volatile organic compounds for this Special Issue of the journal Atmosphere. This incorporates studies that focus on measurements or modeling (statistical modeling and process-based) of exchange processes, as well as studies that combine the two in data-model fusion approaches. We welcome your respective research manuscripts that are submitted by 30 April 2017.
Prof. Andres Schmidt
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atmosphere is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- Land-Atmosphere Exchange
- Carbon Cycle Modeling
- Flux measurements
- Process Based Biosphere Models
- Statistical Biosphere Models
- Eddy Covariance
- Data Assimilation
- Model-Data Fusion
- Climate Change
- Ecosystem Response
- Remote Sensing of Biosphere
- Volatile Organic Compounds
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Tentative Title: Chemical Tracers of Secondary Organic Aerosols from Biomass Burning
Author: Yury Desyaterik
Affiliation: Atmospheric Science Department, Colorado State University, 1371 Campus Delivery, Fort Collins, CO 80523, USA
Abstract: Ambient aerosol samples collected at three different locations in the U.S., representing urban and rural environments, showed a strong correlation between nitrocatechol concentrations and concentrations of levoglucosan, a known marker of biomass burning. Although nitrocatechols are found in diesel- and gasoline-powered engine exhaust, even in an urban environment the nitrocatechol concentration correlates strongly with the levoglucosan concentration, suggesting that the engine source is comparatively small. Analyses of aged biomass smoke samples show that nitrocatechols are tracers of secondary organic aerosols produced during atmospheric aging of biomass burning emissions. Analyses of freshly emitted smoke from combusted biomass reveal that primary emissions cannot account for concentrations of nitrocatechols found in the atmosphere. Although nitrocatechols are often analyzed by high-performance liquid chromatography (HPLC) with mass spectrometric detection, HPLC with UV/Vis absorption detection can provide a more routine, quantitative method for analysis of PM2.5 samples. The sensitivity of detection is sufficient for measuring nitrocatechol concentrations in 1-3 day samples (flow rate 17 L/min through the filter area used for extraction) without sample preconcentration.
Type of Paper: Article
Tentative Title: Multi-temporal linkage patterns of net ecosystem exchange (NEE) with the climatic and ecohydrological drivers in a Florida Everglades freshwater marsh
Authors: Omar I. Abdul-Aziz
Affiliations: Ecological Engineering, Department of Civil & Environmental Engineering, West Virginia University, Morgantown, U.S.A.
Abstract: The multi-temporal linkages of net ecosystem exchange (NEE) with the climatic and ecohydrological variables were investigated for a Florida Everglades freshwater wetland. Hourly observations during 2008-12 were gathered from the AmeriFlux network, and averaged to the four time-scales of 1-day, 8-day, 15-day, and 30-day. Principle component and factor analyses were employed to investigate the interrelation and grouping patterns of the climatic, ecological and hydrological variables at each time-scale. Partial least squares regressions were used to appropriately resolving multicollinearity among predictors and reliably estimate the relative linkages of NEE and the climatic/ecohydrological variables. The data-analytics indicated a robust interrelation and grouping patterns of NEE and the drivers among the four time-scales. Four biophysical components adequately described the data variance at each time-scale. “Radiation-energy” component was most strongly linked with NEE, followed by the “temperature-hydrology”, “aerodynamic”, and the “ambient atmospheric CO2” components. The relative linkage of radiation-energy and NEE appeared constant at different time-scales.
Type of Paper: Article
Tentative Title: Importance of Fast Temperature Measurements in the Sampling Cell of a Closed-Path Gas Analyzer with Short Intake Tube
Authors: James Kathilankal, Gerardo Fratini and George Burba
Affiliations: Li-COR Biosciences, Lincoln, United States
Abstract: Gas analyzers traditionally used in Eddy covariance methodology traditionally measure gas density and when fluxes are calculated, corrections are applied to account for the changes in density of the gas due to changes in temperature (expansion) and changes in water vapor (Dilution effect). The new generation of gas analyzers with fast temperature and pressure measurement in the measurement cell enables the calculation of dry mole fraction thus simplifying the flux processing as the WPL density terms accounting for the air density ﬂuctuations are no longer required. This should also lead to the reduction in uncertainties associated with the density terms resulting from the eddy covariance measurements of sensible and latent heat ﬂuxes.
Traditional closed path instruments with long intake tubes can effectively dampen the fast temperature fluctuations in the sampling tube, before it reaches the measurement cell, thus eliminating the need for an expansion correction while estimating fluxes. But in instruments with a short-tube enclosed design, most - but not all - of the temperature ﬂuctuations are attenuated, so calculating unbiased ﬂuxes using fast dry mole fraction requires high-speed, precise temperature measurements of the air stream inside the cell. Fast pressure and water vapor content of the sampled air should also be measured in the sampling cell, and carefully aligned in time with gas and temperature measurements.
In this study we examine the impact of fast precise temperature measurements on the estimation of carbon dioxide and water vapor fluxes at different time scales from three different ecosystems. The fast cell temperature data is filtered mathematically to obtain slower response cell temperature time series, which is used in the calculation of fluxes. This exercise is intended to simulate the use of thicker slower response thermocouples instead of fast response fine wire thermocouples for estimating cell temperature.