scholarly journals Partitioning evapotranspiration using long-term carbon dioxide and water vapor fluxes

2017 ◽  
Vol 44 (13) ◽  
pp. 6833-6840 ◽  
Author(s):  
Russell L. Scott ◽  
Joel A. Biederman
Keyword(s):  
Carbon Dioxide ◽  
Water Vapor

Long-term spectroscopic measurements of carbon dioxide and water vapor content in the atmosphere over the continent

1999 ◽  
Author(s):  
Vladimir N. Aref'ev ◽  
N. Y. Kamenogradsky ◽  
F. V. Kashin ◽  
V. K. Semyonov ◽  
V. P. Sinyakov
Keyword(s):  
Carbon Dioxide ◽  
Water Vapor ◽  
Water Vapor Content ◽  
Spectroscopic Measurements

Mars: Long-Term Climate Change

2013 ◽  
Author(s):  
Andrew P. Ingersoll
Keyword(s):  
Climate Change ◽  
Carbon Dioxide ◽  
Water Vapor ◽  
Solar System ◽  
Liquid Water ◽  
Greenhouse Warming ◽  
Atmospheric Water ◽  
Major Objective ◽  
Current Value

This chapter examines the processes underlying long-term climate change on Mars, focusing on the so-called “faint young Sun paradox,” in which evidence of ancient rivers contradicts results from astronomy that the Sun's output in the first billion years of the solar system was seventy percent of its current value. The fascination with Mars stems in part from the possibility that life could have evolved there. Searching for evidence of liquid water, past and present, is therefore a major objective. Another objective is understanding Mars's climate, past and present. As on Earth, climate change is recorded in Mars's sediments and ice deposits. The chapter first provides an overview of Mars's climate before discussing the presence of carbon dioxide in the atmosphere. It also considers condensation, evaporation, greenhouse warming, atmospheric water vapor, and the process of terraforming on Mars.

Impact of Dursban and Abate on Microbial Numbers and Some Chemical Properties of Standing Ponds

1975 ◽  
Vol 10 (1) ◽  
pp. 33-41 ◽  
Author(s):  
J. Butcher ◽  
M. Boyer ◽  
CD. Fowle
Keyword(s):  
Carbon Dioxide ◽  
Active Ingredient ◽  
Algal Blooms ◽  
Chemical Properties ◽  
Total Carbon ◽  
Dissolved Carbon ◽  
Photosynthetic Productivity ◽  
Dissolved Carbon Dioxide ◽  
Microbial Numbers

Abstract Eleven small ponds, lined with polyethylene, were used to assess the consequences of applications of *DursbanR at 0.004, 0.030, 0.100 and 1.000 ppm and AbateR at 0.025 and 0.100 ppm active ingredient. The treated ponds showed a more pronounced long-term increase in pH and dissolved oxygen and decreasing total and dissolved carbon dioxide in comparison with untreated ponds. Algal blooms were of longer duration in treated ponds than in controls. Total photosynthetic productivity was higher in treated ponds but bacterial numbers did not change significantly. Photosynthetic productivity was estimated by following the changes in total carbon dioxide.

Mitigation of carbon dioxide by accelerated sequestration from long-term biochar amended paddy soil

2021 ◽  
Vol 209 ◽  
pp. 104955
Author(s):  
Qianqian Zhang ◽  
Pengpeng Duan ◽  
Anna Gunina ◽  
Xi Zhang ◽  
Xiaoyuan Yan ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Paddy Soil

scholarly journals Photocatalytic Activity Enhancement of Low-pressure Cold-Sprayed TiO2 Coatings Induced by Long-term Water Vapor Exposure

2021 ◽  
Author(s):  
Seremak Wioletta ◽  
Baszczuk Agnieszka ◽  
Jasiorski Marek ◽  
Gibas Anna ◽  
Winnicki Marcin
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Water Vapor ◽  
Sol Gel ◽  
Low Pressure ◽  
Oxygen Depletion ◽  
Amorphous Structure ◽  
Industrial Applications ◽  
Additional Parameter

AbstractThis work shows that the titanium dioxide coatings obtained by low-pressure cold gas spraying with the use of the sol–gel amorphous TiO2 powder are characterized by photocatalytic activity despite their partial amorphous content. Moreover, the research outcome suggests that the decomposition rate of organic pollutants is enhanced after long-term exposure to moisture. The condensation humidity test is not detrimental to the continuity and integrity of the coating, but the phase composition of coatings changes—with the exposure to water vapor, the portion of the amorphous phase crystallizes into brookite. The mechanism responsible for the conversion of amorphous TiO2 into brookite is attributed to the water-driven dissolution and reprecipitation of TiO6 octahedra. It has been shown that an additional parameter necessary for the stabilization of the brookite is the oxygen depletion of the amorphous structure of titanium dioxide. Considering the results presented in this paper and the advantages of a portable, low-pressure cold spray system for industrial applications, it is expected that TiO2 coatings produced from a sol–gel feedstock powder can be further developed and tested as efficient photocatalysts.

Effects of Aquifer Parameters on Long-Term Storage of Carbon Dioxide in Saline Aquifers

2012 ◽  
Author(s):  
Andrii Erich Torn ◽  
Farshid Torabi ◽  
Koorosh Asghari ◽  
Mehdi Mohammadpoor
Keyword(s):  
Carbon Dioxide ◽  
Saline Aquifers ◽  
Aquifer Parameters ◽  
Long Term Storage ◽  
Term Storage

Continuous automatic measurement of rhythms in fungal respiration using a gas chromatograph

1973 ◽  
Vol 51 (4) ◽  
pp. 701-710 ◽  
Author(s):  
Roger S. Smith
Keyword(s):  
Carbon Dioxide ◽  
Agar Medium ◽  
Quantitative Measure ◽  
Automatic Measurement ◽  
Carbon Dioxide Production ◽  
Chromatographic Technique ◽  
Gas Chromatograph ◽  
Growth Chambers ◽  
Long Term Measurement

The long-term measurement of aerobic fungal respiration, both on an agar medium and on wood blocks, was possible using a gas-chromatographic technique for the detection of the carbon dioxide. This method was fully automated to analyze gas samples sequentially from eight or more growth chambers, after variable but determined time periods. It provided a precise quantitative measure of the respired carbon dioxide, presented both in the form of punched computer tape and normal printed teleprinter output. This apparatus worked continuously for several years without serious breakdown.The fungi Lentinus lepideus, Lenzites trabea, Poria monticola, and several strains of Coniophora puteana all showed a rhythm in their respiration which was not controlled by temperature or light. The magnitude and frequency of the rhythmical peaks in carbon dioxide production varied between fungi and, although there was considerable variation between different isolates of the same species, the separation of these species of fungi based on their different patterns of respiration was possible.

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