scholarly journals Validation of GPS-Based Monitoring and Remote Sensing of Ice-Shelf and Ice-Sheet Movement Changes

Sensors ◽  
2021 ◽  
Vol 21 (23) ◽  
pp. 7822
Author(s):  
Xiuhong Li ◽  
Xuejie Hao ◽  
Lizeyan Yin ◽  
Lu Liu ◽  
Yushuang Ma ◽  
...  
Keyword(s):  
Climate Change ◽  
Remote Sensing ◽  
Global Climate Change ◽  
Global Climate ◽  
Material Balance ◽  
Polar Regions ◽  
Polar Ice ◽  
Ice Shelf ◽  
Remote Communication ◽  
The Earth

The north and south poles of the earth (hereinafter referred to as the polar regions) are important components of the earth system. Changes in the material balance and movement of the polar ice shelf reflect the influence of the polar regions on global climate change and are also a response to global climate change. Through a comprehensive investigation of ice-shelf kinematics, with sufficient accuracy, it is possible to obtain ice-shelf elevation, movement-state data, ice-shelf material balance state, and the ice-shelf movement dynamics mechanism. Due to the extremely harsh environment in polar regions, remote sensing is currently widely used. Manual and equipment monitoring methods show insufficient accuracy or discontinuous time series. There is an urgent need to obtain continuous real-time ice-shelf kinematics-related parameters on the ground to verify the reliability of the parameters obtained by satellite remote sensing. These parameters should be combined with remote sensing monitoring to provide data support. In this paper, a monitoring system for the movement of polar ice and shelf ice cover is developed, and it is proposed that various data can be acquired by integrating high-precision GPS (global positioning system) and other sensors. Solutions to the problem of low-temperature power supply in the polar regions, data acquisition and storage strategies, and remote communication methods are proposed. Testing and remote sensing validation verified that the developed acquisition system can fulfill the requirements for monitoring the movement of the polar unmanned ice shelves and ice sheets.

scholarly journals Analysis of Long-Term Moon-Based Observation Characteristics for Arctic and Antarctic

2019 ◽  
Vol 11 (23) ◽  
pp. 2805 ◽  
Author(s):  
Yue Sui ◽  
Huadong Guo ◽  
Guang Liu ◽  
Yuanzhen Ren
Keyword(s):  
Global Climate Change ◽  
Large Scale ◽  
Global Climate ◽  
Earth Observation ◽  
Polar Regions ◽  
The Moon ◽  
The North ◽  
The Earth ◽  
The Antarctic

The Antarctic and Arctic have always been critical areas of earth science research and are sensitive to global climate change. Global climate change exhibits diversity characteristics on both temporal and spatial scales. Since the Moon-based earth observation platform could provide large-scale, multi-angle, and long-term measurements complementary to the satellite-based Earth observation data, it is necessary to study the observation characteristics of this new platform. With deepening understanding of Moon-based observations, we have seen its good observation ability in the middle and low latitudes of the Earth’s surface, but for polar regions, we need to further study the observation characteristics of this platform. Based on the above objectives, we used the Moon-based Earth observation geometric model to quantify the geometric relationship between the Sun, Moon, and Earth. Assuming the sensor is at the center of the nearside of the Moon, the coverage characteristics of the earth feature points are counted. The observation intervals, access frequency, and the angle information of each point during 100 years were obtained, and the variation rule was analyzed. The research showed that the lunar platform could carry out ideal observations for the polar regions. For the North and South poles, a continuous observation duration of 14.5 days could be obtained, and as the latitude decreased, the duration time was reduced to less than one day at the latitude of 65° in each hemisphere. The dominant observation time of the North Pole is concentrated from mid-March to mid-September, and for the South Pole, it is the rest of the year, and as the latitude decreases, it extends outward from both sides. The annual coverage time and frequency will change with the relationship between the Moon and the Earth. This study also proves that the Moon-based observation has multi-angle observation advantages for the Arctic and the Antarctic areas, which can help better understand large-scale geoscientific phenomena. The above findings indicate that the Moon-based observation can be applied as a new type of remote sensing technology to the observation field of the Earth’s polar regions.

scholarly journals Global Climate Change Coverage in Malaysia Mainstream Newspapers

2013 ◽  
Vol 1 (3) ◽  
pp. 104-121
Author(s):  
Rahmat Bin Ghazali ◽  
Nor Jijidiana Binti Azmi
Keyword(s):  
Climate Change ◽  
Content Analysis ◽  
Natural Disasters ◽  
Global Climate Change ◽  
Global Climate ◽  
Human Life ◽  
Newspaper Coverage ◽  
Climate Change Issue ◽  
Public Action ◽  
The Earth

Global Climate Change can affect human life and activities. The rising amount of natural disasters, the warming of the Earth and the melting of the icebergs are some examples of its effects. This study is conducted to analyze the coverage of global climate change issue in four Malaysia mainstream newspapers. The data for this study are collected from January 2008 to December 2010. A content analysis is conducted to identify the frequency of the articles related with global climate change, the articles length, the trend of newspaper coverage and the frames of the articles. The findings for this study will provide an understanding about the ways Malaysia mainstream newspapers provide the coverage about Global Climate Change and the audience reactions towards the issue. The findings also suggested that the coverage of global climate change is influenced by the events pertaining the issue. This can be observed from the trend of newspaper coverage. Finally, the result on the frames indicates that the most published topic in global climate change issue is public action to reduce the effects of global climate change and reduce the emissions of the greenhouse gas.

scholarly journals Global Warming – Truth and Myths

2018 ◽  
Vol 1 (1) ◽  
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Global Climate Change ◽  
Global Climate ◽  
Anthropogenic Effects ◽  
Interglacial Period ◽  
Changing Climate ◽  
The Earth ◽  
Degree Of Certainty

Climate change is inevitable. Contributing to this change are (1) natural effects, which include the Earth in an interglacial period and (2) various other effects such as anthropogenic effects, which include the release of non-indigenous gases into the atmospheres. However, the exact contribution of each effect to global climate change is not known with any degree of certainty and the blame can only be partially laid on the existence of the interglacial period and somewhat less on other effects. It is not the purpose of this paper to debunk the idea of climate change but to recognize other factors that can play a role in the changing climate.

scholarly journals Discussões sobre as mudanças climáticas globais: os alarmistas, os céticos e os modelos de previsão do clima

GeoTextos ◽  
2014 ◽  
Vol 10 (1) ◽  
Author(s):  
Francisco Ronnieplex De Moura Cruz ◽  
Letícia Andrade da Silva ◽  
Elisiene De Macêdo Pereira ◽  
Rebecca Luna Lucena
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Climate Changes ◽  
Climate Models ◽  
Global Climate ◽  
Intergovernmental Panel ◽  
Global Climate Changes ◽  
The Earth ◽  
Scientific Papers ◽  
Forecast Models

Este ensaio traz à tona questões intrigantes e dúvidas que permeiam as pesquisas voltadas às mudanças climáticas globais, enfatizando as discordâncias existentes entre as distintas correntes de cientistas e os prognósticos elaborados pelos modelos de previsão do clima. Para tanto, tomou-se por base as teorias propagadas por alarmistas e céticos, bem como o prognóstico do Painel Intergovernamental sobre as Mudanças Climáticas (IPCC) de 2007. O ensaio se baseou na análise de livros, relatórios técnicos e artigos científicos, além da interpretação dos gráficos contidos nos mesmos. Os resultados mostraram que sempre houve variação na temperatura da atmosfera, mesmo antes do surgimento do homem e em níveis bem mais elevados do que os atuais. Contudo, alarmistas e céticos concordam que a Terra passou por um aquecimento de cerca de 0,6ºC no século XX, havendo divergência no que diz respeito às causas desse aquecimento, suas consequências, e se ele ainda está ocorrendo. Entretanto, um aspecto que põe em xeque a confiabilidade de ambas as correntes diz respeito ao problema da previsão, pois são muitos os fatores e elementos envolvidos na complexidade do sistema climático, tornando, assim, previsões climáticas exatas praticamente impossíveis, e deixando o debate, até o momento, no campo das suposições. Abstract DISCUSSIONS ABOUT GLOBAL CLIMATE CHANGES: THE ALARMISTS, THE SKEPTICS AND CLIMATE FORECAST MODELS This paper aims to discuss difficult questions and doubts about researches regarding global climate change, showing discordances about what different scientific groups and the forecasts elaborated by forecasting climate models. Therefore, we take for basis the theories formulated by the two scientific groups: the alarmists and skeptics, and the prognostic showed by the Intergovernmental Panel of Climate Change (IPCC), 2007. This work was based in a research of books, technical documents and scientific papers, and the interpretation of graphs and data within these works. The results showed that oscillating temperatures always existed in the Earth’s atmosphere before human existence and the oscillation was larger than today. However, alarmists and skeptics believe that the earth atmosphere’s temperature elevated by approximated 0.6º C in the XX century, but there is a big divergence about the causes that rise and the consequences. Finally, an issue that questions the reliability of both groups, concerns the problem of forecast mainly because there are many factors and elements involved in the complexity of climate system thus making accurate climate predictions virtually impossible and leaving the debate so far, in the field of assumptions.

Investigation of the Methods of Self-Heating Climate Prevention

2020 ◽  
Vol 9 (2) ◽  
pp. 37-48
Author(s):  
Dmitry Strebkov
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Heat Balance ◽  
Global Climate ◽  
Radiation Balance ◽  
Material Resources ◽  
Self Heating ◽  
The Earth ◽  
Point Of No Return ◽  
The Heat Balance

The investigation has shown that the main cause of the global climate change is “anthropogenic thermal pollution,” which is created by the activity of mankind and creates the prerequisites for breaking the heat balance of the planet and transferring the climate into a state of self-heating. By different estimates, in 20-60 years there could be a point of no return for the warming of the climate of Earth when no material resources of mankind are able to stop the global disaster connected with thawing of glaciers, increasing level of the ocean of 80-100 m and the transition of the Earth climate to a condition incompatible with biological life. Urgent transition to fuel-free power and a change of radiation balance of Earth by increasing the albedo of the cities and deserts is necessary. Calculating the area of specular reflectors and the area of deserts necessary for their location, are necessary to prevent global warming, and showed that the required area is 0.95-1.21% of the area of the African desert.

The Politics of Climate Change Is More Than the Politics of Capitalism

2017 ◽  
Vol 34 (2-3) ◽  
pp. 25-37 ◽  
Author(s):  
Dipesh Chakrabarty
Keyword(s):  
Climate Change ◽  
Global Climate Change ◽  
Political Thought ◽  
Dominant Species ◽  
Global Climate ◽  
Earth System ◽  
Capitalist System ◽  
The Earth ◽  
The Common ◽  
Developed World

Discussion of global climate change is shaped by the intellectual categories developed to address capitalism and globalization. Yet climate change is only one manifestation of humanity’s varied and accelerating impact on the Earth System. The common predicament that may be anticipated in the Anthropocene raises difficult questions of distributive justice – between rich and poor, developed and developing countries, the living and the yet unborn, and even the human and the non-human – and may pose a challenge to the categories on which our traditions of political thought are based. Awareness of the Anthropocene encourages us to think of humans on different scales and in different contexts – as parts of a global capitalist system and as members of a now-dominant species – although the debate is, for now, still structured by the experiences and concepts of the developed world.

scholarly journals Oceanic Lidar: Theory and Experiment

2020 ◽  
Vol 237 ◽  
pp. 07021
Author(s):  
Dong Liu ◽  
Yudi Zhou ◽  
Qun Liu ◽  
Weibiao Chen ◽  
Aleksey Malinka ◽  
...  
Keyword(s):  
Climate Change ◽  
Remote Sensing ◽  
Multiple Scattering ◽  
Global Climate Change ◽  
Global Climate ◽  
Monte Carlo Model ◽  
Radiative Transfer Model ◽  
Transfer Model ◽  
Lidar System ◽  
Theory And Experiment

Study on the upper ocean is of great significance to the global climate change and carbon cycle. Lidar can be used to effectively detect depth-resolved optical properties of the ocean. However, both theory and experiment of oceanic lidar are limited by complex multiple scattering. Several progresses by Zhejiang University will be illustrated in this paper: 1) a polarized lidar system was developed, and a Monte Carlo model and a radiative transfer model were established (Zhou, et al. remote sensing, 2019; Zhou, et al. Journal of remote sensing, 2019; Xu, et al. and Liu, et al. Journal of remote sensing, 2019); 2) Cross validations are demonstrated to verify the availability of the lidar system and models (Liu, et al. IEEE TGRS, 2019); 3) phase function effects on backscatter and attenuation are studied considering multiple scattering, respectively (Liu, et al. Optics Express, 2019). Oceanic lidar is proven to have great potential in marine studies.

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