Article
Environmental Sciences
Herve Douville, Said Qasmi, Aurelien Ribes, Olivier Bock
Summary: This study uses various data sources to constrain the changes in global mean total precipitable water and finds that most global climate models exaggerate the predicted increase in atmospheric humidity. The study also finds that global warming will lead to a substantial intensification of the global water cycle.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Environmental Sciences
Jing Sun, Kaighin A. McColl, Yan Wang, Angela J. Rigden, Hui Lu, Kun Yang, Yishan Li, Joseph A. Santanello
Summary: The study used triple collocation to validate AIRS Level 3 retrievals of near-surface atmospheric state over land. The results showed that AIRS retrievals correlate well with ground observations outside the tropics, but less well in the tropics.
REMOTE SENSING OF ENVIRONMENT
(2021)
Article
Meteorology & Atmospheric Sciences
Qing Yue, Eric J. Fetzer, Likun Wang, Brian H. Kahn, Nadia Smith, John M. Blaisdell, Kerry G. Meyer, Mathias Schreier, Bjorn Lambrigtsen, Irina Tkatcheva
Summary: This study evaluates the self-consistency and continuity of cloud retrievals from Aqua and SNPP satellites. The results show that the products are highly consistent despite retrieval from different sensors using different algorithms. However, differences are revealed in cloud top pressure retrievals and cloud distribution between MODIS and VIIRS instruments.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Article
Meteorology & Atmospheric Sciences
Rongfeng Fan, Zhaoliang Zeng, Xin Wang, Lei Zhang, Wei Cheng, Minghu Ding
Summary: This study compares the detection capability of water vapor mixing ratio (q) and total precipitable water vapor (PWV) products of AIRS, VASS, and VIRR in Antarctica. The findings reveal that AIRS outperforms VASS and VIRR in the detection of both q and PWV.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Review
Meteorology & Atmospheric Sciences
Ramashray Yadav, Ram Kumar Giri, Virendra Singh
Summary: The study examined the spatiotemporal variations of integrated precipitable water vapor (IPWV) using satellite and Copernicus Atmosphere Meteorological Service (CAMS) retrievals in the Indian region. Differences in performance were found between INSAT-3DR and CAMS with respect to GNSS IPWV across seasons and locations, providing valuable insights for forecasting applications.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2021)
Article
Construction & Building Technology
Tingting Huang, Rong Luo
Summary: This study evaluated the relative humidity dependency of Phase I water vapor diffusion and explored the combined effect caused by relative humidity and temperature. Advanced models were used to determine diffusivity and water vapor retention capability, and comprehensive models were established to describe the dependency of diffusivity and water vapor retention capability on relative humidity and temperature. The combined effect of relative humidity and temperature was presented in forms of multiplication.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Geochemistry & Geophysics
J. Polkko, M. Hieta, A. -M. Harri, L. Tamppari, G. Martinez, D. Viudez-Moreiras, H. Savijarvi, P. Conrad, M. P. Zorzano Mier, M. De La Torre Juarez, R. Hueso, A. Munguira, J. Leino, F. Gomez, I. Jaakonaho, E. Fischer, M. Genzer, V. Apestigue, I. Arruego, D. Banfield, A. Lepinette, M. Paton, J. A. Rodriguez-Manfredi, A. Sanchez Lavega, E. Sebastian, D. Toledo, A. Vicente-Retortillo
Summary: The Mars 2020 mission rover Perseverance, launched on 30 July 2020 by NASA, successfully landed on 18 February 2021 at Jezero Crater, Mars. The payload of Perseverance includes the MEDA HS sensor, which measures relative humidity on Mars. The observations from sol 80 to sol 410 show that the measured humidity is reliable during the late night hours and few tens of minutes after sunrise when it is greater than 2%. Data delivered include relative humidity, sensor temperature, uncertainty, and volume mixing ratio.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Instruments & Instrumentation
Wei Nie, Xiao Lin, Gangfu Rao, Meirong Dong, Jidong Lu
Summary: Dew point temperature measurement is a significant task, and this study proposes a measurement method based on tunable diode laser absorption spectroscopy, which can simultaneously measure water vapor temperature, pressure, and concentration. Experimental results demonstrate that this method has high measurement accuracy and detection limit.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
William G. Read, Gabriele Stiller, Stefan Lossow, Michael Kiefer, Farahnaz Khosrawi, Dale Hurst, Holger Vomel, Karen Rosenlof, Bianca M. Dinelli, Piera Raspollini, Gerald E. Nedoluha, John C. Gille, Yasuko Kasai, Patrick Eriksson, Christopher E. Sioris, Kaley A. Walker, Katja Weigel, John P. Burrows, Alexei Rozanov
Summary: This study compares 19 different types of data sets, covering the humidity situation at different heights in the upper troposphere, with a focus on the challenging UTH measurements that require consideration of concentration and vertical gradients changes, as well as the impact of cloudiness on the measurements. Comparisons between satellite measurements and balloon sondes show some differences, particularly with up to 2-fold differences in UTH concentrations.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2022)
Article
Meteorology & Atmospheric Sciences
Carsten Abraham, Colin Goldblatt
Summary: Satellite observations of RH profiles over oceans can be clustered into distinct classes, which have different effects on OLR and are associated with large-scale dynamical structures. These classes occur in specific global ocean regions and are important for studying global climates and the relationship between SST, OLR, and atmospheric water vapor content.
JOURNAL OF THE ATMOSPHERIC SCIENCES
(2022)
Article
Engineering, Mechanical
Haojie Lang, Yitian Peng, Kun Zou, Ruling Chen, Yao Huang
Summary: This study investigates the tribological properties of graphene oxide (GO) in high-humidity environments as a solid lubricant. Atomic force microscopy is used to explore the topography, friction, and adhesion between GO and water nanodroplets at high relative humidity. The results show that the friction of GO inside the nanodroplet is influenced by the tip radius, with sharper tips experiencing higher friction and blunter tips experiencing lower friction. These findings contribute to a better understanding of the friction behaviors of GO.
TRIBOLOGY INTERNATIONAL
(2023)
Article
Engineering, Electrical & Electronic
Qinghui Li, Xiaolei Wang, Huibing Yang, Xichuan Liu
Summary: This study verified the effects of water vapor release and adsorption of the sensor under different conditions through experiments, and proposed a new method to improve the measurement accuracy of the sensor.
IEEE SENSORS JOURNAL
(2021)
Article
Geochemistry & Geophysics
Qian-Yu Liao, Pei Leng, Zhao-Liang Li, Chao Ren, Ya-Yong Sun, Mao-Fang Gao, Si-Bo Duan, Guo-Fei Shang
Summary: A new method for deriving all-sky relative humidity entirely based on MODIS data was proposed in this study, showing reasonable accuracy under different aridity conditions, with stable linear relationships over time.
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
(2021)
Article
Meteorology & Atmospheric Sciences
David M. Romps
Summary: Accurate and explicit expressions for dewpoint and frost point as functions of temperature and relative humidity have been derived theoretically using physical constants and Rankine-Kirchhoff approximations. Compared to modern laboratory measurements, these expressions are accurate to within a few hundredths of a degree over the full range of Earth-relevant temperatures.
JOURNAL OF THE ATMOSPHERIC SCIENCES
(2021)
Article
Optics
Heyu Xu, Wenxin Huang, Xiaolong Si, Xin Li, Weiwei Xu, Liming Zhang, Qingjun Song, Huiting Gao
Summary: In this paper, an onboard spectral calibration method based on a wavelength diffuser is proposed to monitor the spectral position drift, expansion, and contraction of the satellite calibration spectrometer (SCS) during on-orbit operation. The method uses a prelaunch measured wavelength diffuser reflectance as the standard spectrum and convolves it with the spectral response function of the SCS to obtain a reference spectrum. The results show that the method has high accuracy and reliability, and the spectral calibration uncertainty meets the radiometric calibration accuracy requirements.
Review
Engineering, Environmental
Cuihong Song, Jun-Jie Zhu, John L. Willis, Daniel P. Moore, Mark A. Zondlo, Zhiyong Jason Ren
Summary: This study quantitatively analyzed methane emissions from different types of sewers and water resource recovery facilities (WRRFs) and identified the main sources and sinks of methane in the wastewater sector. The results showed significant variations in methane emissions at the plant-level, with higher emissions observed in plants equipped with anaerobic digestion or stabilization ponds. Gravity sewers dominated most collection systems worldwide. The estimated annual methane emission from centralized municipal wastewater treatment in the U.S. was approximately 10.9 +/- 7.0 MMT CO2-eq/year, which is about twice the IPCC (2019) Tier 2 estimates.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Environmental Sciences
Mohammed Basheer, Victor Nechifor, Alvaro Calzadilla, Solomon Gebrechorkos, David Pritchard, Nathan Forsythe, Jose M. Gonzalez, Justin Sheffield, Hayley J. Fowler, Julien J. Harou
Summary: The uncertainties of climate change present challenges for managing the Nile River system, given the increasing demands for river-related services and political tensions among riparian countries. Cooperative adaptive management can help alleviate these stresses and tensions.
NATURE CLIMATE CHANGE
(2023)
Editorial Material
Environmental Sciences
Mohammed Basheer, Victor Nechifor, Alvaro Calzadilla, Solomon Gebrechorkos, David Pritchard, Nathan Forsythe, Jose M. Gonzalez, Justin Sheffield, Hayley J. Fowler, Julien J. Harou
Summary: There is high uncertainty regarding the climate change impacts on the economies and water-dependent sectors of the Nile region. Despite this, cooperative and adaptive management of the Grand Ethiopian Renaissance Dam can lead to economic and water management benefits for Ethiopia, Sudan, and Egypt.
NATURE CLIMATE CHANGE
(2023)
Article
Green & Sustainable Science & Technology
Jose M. Gonzalez, James E. Tomlinson, Eduardo A. Martinez Cesena, Mohammed Basheer, Emmanuel Obuobie, Philip T. Padi, Salifu Addo, Rasheed Baisie, Mikiyas Etichia, Anthony Hurford, Andrea Bottacin-Busolin, John Matthews, James Dalton, D. Mark Smith, Justin Sheffield, Mathaios Panteli, Julien J. Harou
Summary: A multi-objective design framework assisted by artificial intelligence is used in Ghana to explore optimized management and investment strategies for balancing hydropower, bioenergy, solar and wind energies, and their impacts. The development of renewable energy systems and improved operation play a crucial role in mitigating climate change. However, relying solely on hydropower integration to counterbalance intermittent renewables can have negative effects on aquatic ecosystems and increase water conflicts across sectors, highlighting the need for diversified investment strategies.
NATURE SUSTAINABILITY
(2023)
Article
Engineering, Environmental
Daniel P. Moore, Nathan P. Li, Lars P. Wendt, Sierra R. . Castaneda, Mark M. Falinski, Jun-Jie Zhu, Cuihong Song, Zhiyong Jason Ren, Mark A. Zondlo
Summary: A growing percentage of methane emissions from US waste come from wastewater treatment, but there is limited data leading to uncertainties. The largest study of methane emissions from US wastewater treatment was conducted, measuring 63 plants. The findings highlight the need for efforts to identify and mitigate methane emissions with increasing urbanization and centralized treatment.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Water Resources
Mengru Zhang, Xiaoli Yang, Ming Pan, Linyan Zhang, Xiuqin Fang, Justin Sheffield
Summary: The characteristics of meteorological drought in different river basins in China vary spatially and temporally, and this variation is also reflected in the influence of meteorological drought in different watersheds. This study investigates the future meteorological drought risk under different emission scenarios and explores the impact of precipitation and temperature on meteorological drought in different basins in China. The study also considers the uncertainty associated with CMIP6 in different watersheds. The results show a decreasing trend in the frequency of meteorological drought events in the future, but an increase in drought intensity and duration. Precipitation plays a major role in meteorological drought, especially in the northeast and southeast basins of China.
HYDROLOGY RESEARCH
(2023)
Article
Engineering, Civil
Tomasz Janus, James Tomlinson, Daniela Anghileri, Justin Sheffield, Stefan Kollet, Julien J. Harou
Summary: This study investigates the impact of hydrologic-land feedbacks and a hydrologic-water management linkage on optimized land cover arrangements within a multiobjective land cover design framework. It integrates a spatially-distributed and physically-based hydrologic model with a network-based multi-sector water resources management model. Results show that trade-offs between water, food, energy, and environment objectives depend on land cover composition and spatial arrangement. The study demonstrates the added benefits of coupling distributed hydrologic models with water management simulation for multisector multicriteria land cover planning.
JOURNAL OF HYDROLOGY
(2023)
Article
Multidisciplinary Sciences
Xing Yuan, Yumiao Wang, Peng Ji, Peili Wu, Justin Sheffield, Jason A. Otkin
Summary: Flash droughts have become increasingly common worldwide, posing challenges to drought monitoring and prediction. The intensification of droughts has accelerated over subseasonal time scales, leading to a transition towards more flash droughts in 74% of global regions over the past 64 years. This transition is linked to amplified anomalies in evapotranspiration and precipitation deficit due to human-induced climate change. In the future, this transition is expected to expand to most land areas, with greater increases under higher-emission scenarios. These findings highlight the urgency of adapting to faster-onset droughts in a warmer future.
Article
Green & Sustainable Science & Technology
Ailish Craig, Craig Hutton, Laura A. A. Lewis, Frank B. B. Musa, Justin Sheffield
Summary: This study examines the association between typologies of social capital and household food security in Southern Malawi, with a focus on access to food. The findings show that bonding and bridging social capital are associated with better household access to food, while linking social capital is associated with lower access to food. The study also suggests that female-headed households prioritize linking social capital, while male-headed households prioritize bonding social capital.
SUSTAINABILITY SCIENCE
(2023)
Article
Meteorology & Atmospheric Sciences
Neel Desai, Minghui Diao, Yang Shi, Xiaohong Liu, Israel Silber
Summary: This study analyzed remote sensing observations of Southern Ocean clouds and compared them with climate model simulations. It was found that the model underestimates the presence of ice phase clouds at high latitudes and overestimates the presence of liquid phase clouds. This indicates that the Earth's surface may absorb more solar radiation than the model estimates, especially around Antarctica. Both observations and simulations show that ice clouds are common at higher latitudes whereas liquid clouds are common at lower latitudes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Meteorology & Atmospheric Sciences
Xi Zhao, Xiaohong Liu, Susannah Burrows, Paul J. DeMott, Minghui Diao, Greg M. McFarquhar, Sachin Patade, Vaughan Phillips, Greg C. Roberts, Kevin J. Sanchez, Yang Shi, Meng Zhang
Summary: Research finds that GCMs used to simulate cloud phase and cloud radiative effect over the Southern Ocean (SO) face challenges. New-generation GCMs tend to predict excessive liquid and insufficient ice in mixed-phase clouds. This misrepresentation of cloud phase leads to weaker negative cloud feedback and higher climate sensitivity over the SO. By comparing models with observational data, the study identifies the main uncertainties related to cloud phase in the Community Earth System Model version 2 (CESM2), namely ice formation in pristine remote SO clouds. The study highlights the importance of accurately representing cloud phase by considering sea spray organic aerosols (SSOAs) as the most important ice nucleating particles (INPs) over the SO and the effects of secondary ice production (SIP) processes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geosciences, Multidisciplinary
Catherine Tlotlo Kerapetse, Jean-Marie Kileshye Onema, Webster Gumindoga, Cosmo Ngongondo, Justin Sheffield
Summary: The understanding of groundwater recharge occurrence in drylands is essential for water resources management. This study used Remote Sensing and GIS techniques to identify potential groundwater recharge zones and predicted crop yield. The results showed changes in land cover and suggested the existence of water resources for food security in water-scarce drylands.
PHYSICS AND CHEMISTRY OF THE EARTH
(2023)
Article
Meteorology & Atmospheric Sciences
John J. J. DAlessandro, Greg M. M. McFarquhar, Jeffrey L. L. Stith, Minghui Diao, Paul J. J. DeMott, Christina S. S. McCluskey, Thomas C. J. Hill, Greg C. C. Roberts, Kevin J. J. Sanchez
Summary: This study analyzes the microphysical properties of single- and multi-layer clouds over the Southern Ocean. It finds that multi-layer clouds have higher frequencies of ice-containing samples compared to single-layer clouds, especially in the lowest cloud layers. Differences in drop concentrations and size distributions are observed between single- and multi-layer clouds. Additionally, the environment's state affects drop concentrations.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Geography
Ailish Craig, Craig Hutton, Frank B. Musa, Justin Sheffield
Summary: From 2018 to 2020, 82% of Malawian's were classified as moderately or severely food insecure. The decline in social capital in sub-Saharan African countries raises questions about its effectiveness in alleviating hunger. Gender plays a role in both food security and social capital, but limited research has investigated the gender differences in social capital and food access.
JOURNAL OF RURAL STUDIES
(2023)
Article
Environmental Sciences
Flor Vanessa Maciel, Minghui Diao, Ryan Patnaude
Summary: This study distinguishes five evolution phases of cirrus clouds based on aircraft observations and finds strong correlations between ice microphysical properties and aerosol number concentrations. Heterogeneous nucleation is found to contribute to ice crystal formation when ice crystals first start to nucleate, while homogeneous nucleation becomes more prominent in later growth phases. The simulations underestimate ice water content and ice crystal number concentration and show negative correlations between these properties and aerosol concentration in the Southern Hemisphere. Future model development needs to address the insufficient representation of water vapor and vertical velocity to improve the simulation of ice particle formation and growth.
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2023)
