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It's winter
\"Snow, sledding, and hot cocoa can only mean one thing: Winter is here. This charming fiction title transports readers into a winter wonderland, where a relatable narrator explores the season.\"--Amazon.com.
Book
Climate Variability and Change of Mediterranean-Type Climates
Mediterranean-type climates are defined by temperate, wet winters, and hot or warm dry summers and exist at the western edges of five continents in locations determined by the geography of winter storm tracks and summer subtropical anticyclones. The climatology, variability, and long-term changes in winter precipitation in Mediterranean-type climates, and the mechanisms for model-projected near-term future change, are analyzed. Despite commonalities in terms of location in the context of planetary-scale dynamics, the causes of variability are distinct across the regions. Internal atmospheric variability is the dominant source of winter precipitation variability in all Mediterranean-type climate regions, but only in the Mediterranean is this clearly related to annular mode variability. Ocean forcing of variability is a notable influence only for California and Chile. As a consequence, potential predictability of winter precipitation variability in the regions is low. In all regions, the trend in winter precipitation since 1901 is similar to that which arises as a response to changes in external forcing in the models participating in phase 5 of the Coupled Model Intercomparison Project. All Mediterranean-type climate regions, except in North America, have dried and the models project further drying over coming decades. In the Northern Hemisphere, dynamical processes are responsible: development of a winter ridge over the Mediterranean that suppresses precipitation and of a trough west of the North American west coast that shifts the Pacific storm track equatorward. In the Southern Hemisphere, mixed dynamic–thermodynamic changes are important that place a minimum in vertically integrated water vapor change at the coast and enhance zonal dry advection into Mediterranean-type climate regions inland.
Journal Article
Why Is the Mediterranean a Climate Change Hot Spot?
Higher precipitation is expected over most of the world’s continents under climate change, except for a few specific regions where models project robust declines. Among these, the Mediterranean stands out as a result of the magnitude and significance of its winter precipitation decline. Locally, up to 40% of winter precipitation could be lost, setting strong limits on water resources that will constrain the ability of the region to develop and grow food, affecting millions of already water-stressed people and threatening the stability of this tense and complex area. To this day, however, a theory explaining the special nature of this region as a climate change hot spot is still lacking. Regional circulation changes, dominated by the development of a strong anomalous ridge, are thought to drive the winter precipitation decline, but their origins and potential contributions to regional hydroclimate change remain elusive. Here, we show how wintertime Mediterranean circulation trends can be seen as the combined response to two independent forcings: robust changes in large-scale, upper-tropospheric flow and the reduction in the regional land–sea temperature gradient that is characteristic of this region. In addition, we discuss how the circulation change can account for the magnitude and spatial structure of the drying. Our findings pave the way for better understanding and improved modeling of the future Mediterranean hydroclimate.
Journal Article
What happens in winter?
\"Early readers will explore the super season of winter and learn the science behind Mother Nature's coldest season\"-- Publisher's website.
Book
Anexo al dossier: las imágenes de las artistas y su maternidades
Siempre ha habido mujeres artistas, igual que siempre ha habido madres, sin embargo, desde las Venus prehistóricas, la maternidad no ha sido nunca un asunto central del arte. Algunas de ellas son Louise Bourgeois, Frida Kahlo, Rineke Dijstra, Sally Mann, Elena del Rivero, Eulalia Valldosera, o Ana Álvarez Errecalde, por citar a algunas de ellas, entre muchas otras.
Journal Article
Winter wonderland
Each year, as days grow shorter and trees become bare, the world outside seems to slow and darken. But for children, this time of year is magical. The frosty air crackles with play and laughter. There is a sense of excitement as snow and cold weather make for outdoor adventures that are not possible any other time of year.
Book
Early-Season Mapping of Winter Crops Using Sentinel-2 Optical Imagery
Sentinel-2 imagery is an unprecedented data source with high spatial, spectral and temporal resolution in addition to free access. The objective of this paper was to evaluate the potential of using Sentinel-2 data to map winter crops in the early growth stage. Analysis of three winter crop types—winter garlic, winter canola and winter wheat—was carried out in two agricultural regions of China. We analysed the spectral characteristics and vegetation index profiles of these crops in the early growth stage and other land cover types based on Sentinel-2 images. A decision tree classification model was built to distinguish the crops based on these data. The results demonstrate that winter garlic and winter wheat can be distinguished four months before harvest, while winter canola can be distinguished two months before harvest. The overall classification accuracy was 96.62% with a kappa coefficient of 0.95. Therefore, Sentinel-2 images can be used to accurately identify these winter crops in the early growth stage, making them an important data source in the field of agricultural remote sensing.
Journal Article
Winter
Photographs and simple text describe the weather, plants, animals, foods, festivals, and fun things to do in winter. Includes instructions for a related activity.
Book
