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This paper provides a snapshot of the permafrost thermal state in the Nordic area obtained during the International Polar Year (IPY) 2007-2009. Several intensive research campaigns were undertaken within a variety of projects in the Nordic countries to obtain this snapshot. We demonstrate for Scandinavia that both lowland permafrost in palsas and peat plateaus, and large areas of permafrost in the
Mixing of powders into liquids is a common unit operation. Mixing can be divided into several steps: imbibation of the powder into the liquid being the first Under some circumstances, for instance, if the powder has poor wetting properties, imbibation can be the rate-determining step. In this study imbibation in a commercial mixer was studied and a method to measure powder imbibation in a model th
Recent advancements in catchment hydrology (such as understanding hydrological processes, accessing new data sources, and refining methods for parameter constraints) make it possible to apply catchment models for ungauged basins over large domains. Here we present a cutting-edge case study applying catchment-modelling techniques at the global scale for the first time. The modelling procedure was c
We used satellite remote sensing data; fractionof photosynthetically active radiation absorbed by vegetation(fPAR) from the Moderate Resolution Imaging Spectrora-diometer (MODIS) in combination with tower eddy covari-ance and meteorological measurements to characterise theLight Use Efficiency parameter (ε)variability and the maxi-mumε(εmax)for two contrasting Canadian peatlands. Eight-
The radiometric distortion of reflected radiation received by the NOAA AVHRR sensor is brought on by the effects of viewing and solar illumination geometry, as well as atmospheric effects. This may lead to a gross underestimation of bioproductivity or crop yield from models which use high temporal resolution NOAA AVHRR data as an input. Accordingly, a simple angular correction method is presented
Forest wind damage models are typically based on the assumption that windstorm damage results from the interaction between horizontal wind forces and forest stand properties. In complex terrain, mountain waves caused by stably stratified air flowing over mountains can generate standing waves and severe downslope windstorms on the leeward side. Using the windstorm of 19 November 2021 in a mountain
This study examines carbon (C) and water dynamics in two East African dryland ecosystems: a savanna rangeland grazed by livestock and wildlife, and a rainfed cropland under minimal tillage. Over 185 days, both systems were showed a similar magnitude of C emissions with differing temporal patterns. The rangeland showed fluctuating C exchange, with losses followed by increased C uptake after rainfal
In 1634, silver was found in inland Sápmi, on the present border between Norway and Sweden. The Swedish Crown had the ore extracted and a works for refining the silver was established in Silbojokk the following year. During the coming decades, two more works and many mines were opened in Sápmi. Sámi, Swedish and Dutch/German migrant workers were employed under restrictive conditions and in a harsh
Tropical forests are essential for global biodiversity, carbon storage, and hydrological regulation, yet accelerating land-use and land-cover change are rapidly eroding these functions across Southeast Asia. In Cambodia, forest conversion surrounding protected landscapes has intensified over recent decades, but its long-term ecological and economic consequences remain poorly quantified because few
Aerosol–cloud interactions (ACIs) are critical in modulating the Earth’s energy balance and water cycle at both regional and global scales. This study examines ACIs over the Indian subcontinent during 2003–2020 using the third edition of the satellite application facility on climate monitoring (CM SAF) cloud, albedo, and surface radiation dataset derived from advanced very high-resolution radiomet
