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The representation of the Earth's surface in global monitoring and forecasting applications is moving towards capturing more of the relevant processes, while maintaining elevated computational efficiency and therefore a moderate complexity. These schemes are developed and continuously improved thanks to well instrumented field-sites that can observe coupled processes occurring at the surface–atmosphere interface (e.g., forest, grassland, cropland areas and diverse climate zones). Approaching global kilometer-scale resolutions, in situ observations alone cannot fulfil the modelling needs, and the use of satellite observation becomes essential to guide modelling innovation and to calibrate and validate new parameterization schemes that can support data assimilation applications. In this book, we review some of the recent contributions, highlighting how satellite data are used to inform Earth surface model development (vegetation state and seasonality, soil moisture conditions, surface temperature and turbulent fluxes, land-use change detection, agricultural indicators and irrigation) when moving towards global km-scale resolutions.

direct and inverse methods --- absorption coefficient --- emissivity --- land-surface model --- n/a --- variational retrieval --- temporal autocorrelation --- Bayesian bias correction --- hyperspectral --- infrared --- BRDF --- satellite rainfall --- MCD43C1 --- penetration depth --- RTTOV --- earth-observations --- earth system modelling --- representative depth --- land --- Changjiang (Yangtze) estuary --- CDOM --- soil moisture --- surface --- Maqu network --- surface soil moisture --- MODIS --- soil effective temperature --- GOCI --- microwave remote sensing --- rain gauge --- QAA inversion --- broadband emissivity --- radiation --- surface parameters --- satellite data --- East Africa

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Forest ecosystems are often disturbed by agents such as harvesting, fire, wind, insects and diseases, and acid deposition, with differing intensities and frequencies. Such disturbances can markedly affect the amount, form, and stability of soil organic carbon in, and the emission of greenhouse gases, including CO2, CH4, and N2O from, forest ecosystems. It is vitally important that we improve our understanding of the impact of different disturbance regimes on forest soil carbon dynamics and greenhouse gas emissions to guide our future research, forest management practices, and policy development. This Special Issue provides an important update on the disturbance effects on soil carbon and greenhouse gas emissions in forest ecosystems in different climate regions.

greenhouse gas emission --- heterotrophic respiration --- Camellia oleifera --- Larix principis-rupprechtii Mayr --- soil microbial residue --- assisted natural regeneration --- soil organic carbon --- soil carbon sequestration --- soil CO2 --- surface soil layer --- landform --- anthropogenic effect --- South Korea --- CO2 effluxes --- storm damage --- microbial properties --- calcareous soil --- land use pattern --- soil total nitrogen --- generation --- tree mortality --- land use types --- forest conversion --- DCD --- carbon source–sink --- stoichiometric ratios --- autotrophic respiration --- N2O --- CO2 emission --- organic carbon mineralization --- CH4 emissions --- clear-cutting --- CO2 production and diffusion --- soil quality --- nitrification inhibitor --- organic carbon accumulation --- climate change mitigation --- global change --- greenhouse gas inventory --- warming --- soil properties --- bacterial community --- sensitivity --- soil characteristics --- forest --- insect outbreak --- biochar --- nitrous oxide --- CO2 --- soil respiration --- land-use change --- decomposition --- soil --- natural forest --- calcareous soils --- greenhouse gas --- forest soils --- karst graben basin --- plantation --- rocky desertification --- fitting parameters --- temperature --- forest disturbance --- microbe --- subtropical forest --- N addition --- carbon stock changes --- IPCC --- next-generation sequencing --- nitrogen --- N2O emissions --- red soils --- CH4 --- coastal wetlands --- CO2 emissions --- stand age --- successive planting --- plum plantation ages

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Ten years have passed since the nuclear accident occurred in Fukushima, Japan, following the Great East Japan earthquake. Thereafter, many people around the world have been concerned about the risks posed by radiation. They still believe that even a small amount of radiation exposure will affect human health. In reality, however, there are many natural radionuclides in the environment, which emit a variety of types of radiation. Although it is well known that there is a positively linear relationship between acute radiation exposure and cancer risk in atomic bomb survivors, the risk of chronic radiation exposure due to natural radionuclides cannot be well explained to people who have lived in high-background radiation areas for many generations. Therefore, more studies in this research field are required to obtain new scientific findings. In order to promote further scientific activities, it will be the best for us to understand the current status of this field by summarizing what we have apprehended so far. This Special Issue will highlight measurement data, methodologies, radiation biology, and risk assessment related to radiation.

air dose rate --- difficult-to-return zone --- evacuation order-lifted areas --- effective dose rate --- external exposure risk --- Fukushima Daiichi Nuclear Power Station accident --- living space --- radiocesium --- surface soil --- Tomioka town --- tritium monitoring --- fusion test facility --- deuterium plasma experiment --- monthly precipitation --- chemical composition --- Fukushima Daiichi Nuclear Power Plant --- strontium-90 --- cesium-137 --- seawater monitoring --- contaminated water --- dose assessment --- Japan --- bottled water --- guidance level --- WHO --- natural radionuclides --- artificial radionuclides --- effective dose --- ingestion --- passive radon monitor --- development --- sensitivity --- detection limit --- air-exchange rate --- total diet study --- radioactive cesium --- potassium-40 --- dietary intake --- Fukushima accident --- 222Rn progeny --- 220Rn progeny --- CR-39 --- equilibrium equivalent concentration --- deposition velocity --- thoron --- thoron progeny --- indoor environment --- measurement technique --- radioactivity --- residential exposure --- dose --- gamma radiation --- health risk --- radon mapping --- 226Ra --- 228Ra --- 238U --- well water --- radiological hazards --- REE and uranium mines --- northern Vietnam --- radon --- hot spring --- public health --- Namie Town --- cesium-134 --- external exposure dose evaluation --- radon concentration --- groundwater --- residence time --- limestone aquifer --- Okinawa Island --- indoor --- environment --- nationwide survey --- SSNTD --- radon potential map --- geography information systems --- geology --- risk --- exhalation rate --- long-term measurement --- seasonal variation --- Fukushima --- free-roaming cat --- reproductive organ --- internal contamination