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Den pågående klimatförändringen är som mest uttalad i Arktis och påverkan på kryosfären har accelererat under de senaste årtiondena. Den här studien undersöker möjlihgeterna att applicera multispektrala satellitdata inom Kryosfärsstudier. Studieområdet täcker istäcksområdena Mýrdalsjökull och Eyjafjallajökull, belägna i Suðurland på Island. Analysen baseras sig på Landsatdata. Studien inkluderar eThe study focuses on the application of multispectral satellite imageries in glaciological studies. It aims to assess how the Icelandic glaciers have evolved over the last decades (from the 1980s to 2014). The study area covers Mýrdalsjökull and Eyjafjallajökull ice caps located in Suðurland, Iceland. The cryosphere is an integral part of the global climate system. Its occurrence is dependent on

Polarimetric radar observations of deep convective storms frequently reveal columnar enhancements of differential reflectivity Z(DR). Such "Z(DR) columns" can extend upward more than 3 km above the environmental 0 C level, indicative of supercooled liquid drops being lofted by the updraft. Previous observational and modeling studies of Z(DR) columns are reviewed. To address remaining questions, th

Bioenergi spelar idag en stor roll i det svenska energisystemet ur klimat- och energisäkerhetssynpunkt men vilken roll kan inhemsk bioenergi komma att spela framöver för att Sverige ska bli ett fossilfritt samhälle med nettonollutsläpp 2050? Syftet med denna rapport är att utifrån olika perspektiv beskriva hur tillförseln av inhemska skogsbaserade biobränslen kan komma att förändras under perioden

The durability of a road is among other factors dependent on the affinity between stones in the top layer and bitumen that holds the stones together. Poor adherence will cause stones to detach from the surface of the road more easily. The rolling bottle method is the standard way to determine the affinity between stones and bitumen. In this test a number of stones covered in bitumen are put in a r

This paper presents a discrete model of a sensor path planning problem, with a long-term planning horizon. The goal is to minimize the covariance of the reconstructed structures while meeting constraints on the length of the traversed path of the sensor. The sensor is restricted to move on a graph representing a discrete set of configurations, and additional constraints can be incorporated by alte

This paper describes a multi-camera system designed for capture and tracking of swimmers both above and below the surface of a pool. To be able to measure the swimmer's position, the cameras need to be accurately calibrated. Images captured below the surface provide a number of challenges, mainly due to refraction and reflection effects at optical media boundaries. We present practical methods for

I Skåne kan klimatförändringarna förbättra förutsättningarna för produktion av grödor och annan biomassa via förlängd växtsäsong och ökad tillväxt. Samtidigt ökar dock risker för skador, sjukdomar och insektsangrepp. En intensifiering av jordbruk för att ta vara på ökad produktionspotential och för att möta ett ökat behov av biomassa riskerar att förvärra problem som redan finns när det gäller fö

Neural networks designed for real-time object detectionhave recently improved significantly, but in practice, look-ing at only a single RGB image at the time may not be ideal.For example, when detecting objects in videos, a foregrounddetection algorithm can be used to obtain compact temporaldata, which can be fed into a neural network alongside RGBimages. We propose an approach for doing this, bas

Keynote presentation based on the book "Street Art and the Environment" (2018).

In models of plant volatile isoprenoid emissions, the instantaneous compound emission rate typically scales with the plant's emission potential under specified environmental conditions, also called as the emission factor, ES. In the most widely employed plant isoprenoid emission models, the algorithms developed by Guenther and colleagues (1991, 1993), instantaneous variation of the steady-state em

Extreme winter events that damage vegetation are considered an important climatic cause of arctic browning - a reversal of the greening trend of the region - and possibly reduce the carbon uptake of northern ecosystems. Confirmation of a reduction in CO2 uptake due to winter damage, however, remains elusive due to a lack of flux measurements from affected ecosystems. In this study, we report eddy

In the last few decades it has become ever clearer that humankind faces many serious environmental challenges. As the corporate sector has been identified as an important actor to address these challenges, understanding why certain companies choose to adopt sustainability initiatives, while others do not, is an important question. However, little previous research has addressed how sustainability

Landscapes influence precipitation via the water vapor and energy fluxes they generate. Biologically active landscapes also generate aerosols containing microorganisms, some being capable of catalyzing ice formation and crystal growth in clouds at temperatures near 0 degrees C. The resulting precipitation is beneficial for the growth of plants and microorganisms. Mounting evidence from observation

This keynote talk discussed how street art may influence our perception and use of the urban environment. With a point of departure in the book "The Street Art World" (2014), it argued that the open, unsanctioned and ephemeral nature of street art plays an important role in potentially changing how we relate to our surroundings. The talk also considered how sanctioned, often large-scale, works can

Selection of the number and which of multisource precipitation datasets is crucially important for precipitation fusion. Considering the effects of different inputs, this study proposes a new framework based on the Bayesian model averaging (BMA) algorithm to integrate precipitation information from gauge-based analysis CPC, reanalysis-derived dataset ERA5, and satellite-retrieval products IMERG-E

As the effects of climate change, political upheaval and ravaging war are palpable, apocalyptic images as well as the concept ‘apocalyptic’ are today regularly invoked in politics, popular culture and mass media. This essay ponders the potential dangers of the apocalyptic imaginary, especially its tendency to encourage idealization of one’s own community and demonization of the other. As carriers