Välismaa uudised

Alaska's North Slope snow-free season is lengthening

ScienceDaily - 3. August 2017 - 21:10
On the North Slope of Alaska, snow is melting earlier in the spring and the snow-in date is happening later in the fall, according to a new study.
Kategooriad: Välismaa uudised

Very warm Mediterranean sea – and what that means for severe weather in the autumn

Severe Weather Europe - 3. August 2017 - 17:22
We take a short look at the weather patterns across the Mediterranean in the autumn that produce severe weather and how high sea surface temperatures may affect them. There are several weather patterns that generate particularly severe thunderstorms across the Mediterranean, particularly the N-CNTRL part. As summer progresses into autumn increasingly deep troughs enter the Mediterranean region, producing severe weather setups. Major flooding – particularly along the Ligurian coast (NW Italy) and north Adriatic region (NE Italy, W Slovenia, NW Croatia) Increasingly deep troughs over the northern Mediterranean with secondary cyclogenesis frequently establish slow moving strong surface wind convergences over the Ligurian sea. Lifting along the convergence and strong jetstream aloft produce long convective lines of training thunderstorms, that produce
Kategooriad: Välismaa uudised

Follow up on the heat wave – Thursday, August 3rd, 2017

Severe Weather Europe - 3. August 2017 - 14:10
Follow up on the current intense heat wave across the Mediterranean, parts of central Europe and the Balkan peninsula. Today, another extremely hot day is expected as temperatures are locally already well above 35 °C and expected to rise into upper 30s and into low 40s range during peak time hours this afternoon. Max afternoon temperatures yesterday reached up to 40 °C in SE France, central Italy and S Spain again while extremely hot and near record-breaking values were observed along the eastern Adriatic coast with over 42 °C in the city of Split, Croatia! Here are some peak temperatures yesterday: Italy: 1 Frosinone (Italy) 42.2 °C 2 Guidonia (Italy) 42.0 °C 3 Amendola (Italy) 41.6 °C 4 Ferrara (Italy)
Kategooriad: Välismaa uudised

Current sea temperatures in Greece – Ionian, Aegean, central Mediterranean sea

Severe Weather Europe - 3. August 2017 - 11:25
Heading for holidays in Greece? Here is a review of current sea surface temperatures around the country. Generally very warm Ionian sea and central Mediterranean, slightly ‘cooler’ Aegean sea. Ionian sea, central Mediterranean – Corfu, Lefkada, Cephalonia, western coast of Greece The western coast of Greece, including the islands Corfu, Lefkada and Cephalonia is very warm, with sea surface temperatures in 28-30 °C range. Crete The northern coast of the island is slightly warmer with sea surface temperature 28-29 °C, while the southern coast is about 1 °C cooler, 27-29 °C. Slight SWE hint – do visit the Balos Lagoon if you like warm water! Aegean sea Is somewhat ‘cooler’ with sea surface temperature in 26-28 °C range. The eastern
Kategooriad: Välismaa uudised

Extremely warm Adriatic sea – and getting (much!) warmer by the end of the week!

Severe Weather Europe - 3. August 2017 - 10:04
The Adriatic sea is hit 29 °C in its northernmost part already on Tuesday, and will be getting even warmer by the end of the week. The 29 °C mark (at 2 m depth!) was reached at the Debeli Rtič (Zora) station on the Slovenian coast. The sea cooled down to 28 °C last night and is expected to surpass 29 °C today. Sea surface temperature in the Adriatic sea forecast for August 6. Map: Adriatic Forecasting System. Current Adriatic sea surface temperatures indicate surface temperatures in 27-29 °C range across most of the northern Adriatic, 28-30 °C in the western Adriatic along the coast of central Italy, and somewhat cooler 24-26 °C in the southern Adriatic and locally in
Kategooriad: Välismaa uudised

Deadly heat waves could hit South Asia this century

ScienceDaily - 2. August 2017 - 22:25
In South Asia, new research suggests that by the end of this century climate change could lead to summer heat waves with levels of heat and humidity that exceed what humans can survive without protection.
Kategooriad: Välismaa uudised

Defunct satellites: Reliably determine and predict attitude motion

ScienceDaily - 2. August 2017 - 15:33
Uncontrollable flying objects in the Earth‘s orbit are an enormous risk for active satellites and for spacecraft in general. Since April 2012, the European environmental satellite ENVISAT has also been adrift in orbit. Now, experts have developed pioneering methods to precisely determine the attitude rotation of malfunctioning satellites and, thus, to support de-orbiting missions in the future.
Kategooriad: Välismaa uudised

Heat wave health risks

Severe Weather Europe - 2. August 2017 - 14:13
The ongoing heat wave across southern and southeastern Europe is pushing temperatures in the high 30s and locally even well above 40 °C – an extended period of such hot weather is physically challenging and presents an enhanced risk for health. Very hot weather, in particular in extended periods – heat waves – is uncomfortable, but it also presents a very significant health risk. During the European heat wave of 2003, the most intense heat wave in Europe on record, over 70 000 people died as the result of the hot weather. As the heat wave in southern and southeastern Europe intensifies, make sure to know the health risks and how to keep you and your loved ones healthy. Here
Kategooriad: Välismaa uudised

Follow up on the heat wave – Wednesday, August 2nd, 2017

Severe Weather Europe - 2. August 2017 - 12:18
The strong blocking pattern over the eastern half of Europe as well as most of the Mediterranean remains in place and the heat wave still strenghtening. Peak temperatures yesterday reached up to 41 °C in southern France, up to 35-38°C across much of Balkan peninsula, central Europe and Italy while some areas in Italy (Sardinia + central parts) and W Balkan reached up to 42°C. Here are some peak temperatures yesterday; Italy: 1 Alghero (Italy) 41.9 °C 2 Capo Frasca (Italy) 41.4 °C 3 Firenze (Italy) 41.3 °C 4 Firenze / Peretola (Italy) 41.3 °C 5 Guidonia (Italy) 40.8 °C 6 Frosinone (Italy) 40.0 °C 7 Marina Di Ginosa (Italy) 40.0 °C 8 Ferrara (Italy) 39.2 °C 9 Amendola (Italy)
Kategooriad: Välismaa uudised

Successful prediction of multi-year US droughts and wildfire risk

ScienceDaily - 1. August 2017 - 16:45
A new study shows that difference in water temperature between the Pacific and the Atlantic oceans together with global warming impact the risk of drought and wildfire in southwestern North America. A new model proves capable of much longer-term forecasts of mega-drought and active wildfire seasons than those currently available to people in agriculture, water management and forestry.
Kategooriad: Välismaa uudised

Follow up on the heat wave – Tuesday, August 1st, 2017

Severe Weather Europe - 1. August 2017 - 14:42
The strong blocking pattern over the eastern half of Europe remains in place and the heat wave continues intensifying and spreading from SSW in to central and southeastern Europe. Peak temperatures yesterday reached up to 40 °C in southern France, 41 °C in Italy (Sardinia) and 38 °C in southern Spain. Europe is still divided in two halfs with much cooler temps across W Europe and hot weather further ESE with deep trough over W Europe and an intense ridge over ESE Europe. Indeed, an active pattern is evolving across W-CNTRL Europe with severe thunderstorms over France and Germany last night and a severe thunderstorm outbreak expected today over central Europe! Today the highest temperatures are expected across parts of
Kategooriad: Välismaa uudised

Intense severe thunderstorms in eastern France, Luxembourg and Germany last night – August 1, 2017

Severe Weather Europe - 1. August 2017 - 13:28
Widespread severe thunderstorms hit eastern France, parts of BeNeLux and western Germany last night and this morning (July 31/August 1). Lightning tracks of individual storms mark the zone of severe thunderstorms late last night and this morning over France, Luxembourg and Germany (and W Poland). Over 276 000 lightning flashes were detected in the region over the past 24 hours! Map: Blitzortung.org A volatile setup over central-eastern France and central Germany yesterday produced widespread severe thunderstorms over the region. An unstable atmosphere, with moderate to high instability with MLCAPE in 1000-2000 J/kg range, overspread by a strong mid-level jetstream, to produce about 40-50 kt deep-layer shear; an environment conductive for formation of intense supercell thunderstorms. Intense discrete thunderstorms, including supercells
Kategooriad: Välismaa uudised

Severe supercells and hailstorms in CNTRL-E France – July 30, 2017

Severe Weather Europe - 1. August 2017 - 11:06
Severe hailstorms were reported in eastern parts of central France on July 30. Several discrete supercells formed, producing large to very large hail. Well-developed supercell over la Loire (42) late on July 30. Note the rain-free base, wall cloud and precipitation offset to the right. Photo: Alexandre Mancini / Rhône-Alpes / Auvergne infos météo. Hailstones up to about 3-4 cm in diameter were reported. Several storm chasers photographed the parent supercells, make sure to see the time lapse at the end. Large hail in: Arcy-Sur-Cure (89), photo by créperie ty heol (left) and Saint-Loup-de-Naud (77), photo by Diane Marcellas (right)..
Kategooriad: Välismaa uudised

Most noteworthy severe weather events in Europe: a review – July 2017

Severe Weather Europe - 31. Juuli 2017 - 21:45
A number of noteworthy severe weather events happened across Europe in July. Severe hailstorms were frequent, particularly in Spain, Italy and parts of southeastern Europe. Also, the coast of the Mediterranean burned in many places, including southern France, numerous locations in Italy and the eastern coast of the Adriatic sea in Croatia and Montenegro. Below is a compilation of some of the most outstanding severe weather events in July (click on the links to full reports): JULY 10 VIENNA AIRPORT, AUSTRIA TORNADO An exceptional stovepipe tornado formed near Vienna airport, Austria on a big isolated supercell thunderstorm on July 10. A favourable combination of instability, shear and a local surface low led to the development of the most photogenic tornado
Kategooriad: Välismaa uudised

Coral disease outbreaks fluctuate with El Niño years, new research finds

ScienceDaily - 31. Juuli 2017 - 20:41
Disease outbreaks in corals have followed El Niño-fueled coral bleaching events in the past, leading to speculation about the connection between the diseases and the El Niño cycles. This new study confirms the speculation.
Kategooriad: Välismaa uudised

Outlook day 1 (valid: 01/08/2017)

Severe Weather Europe - 31. Juuli 2017 - 20:00
VALID FOR 01-08-2017 *** A widespread severe weather outbreak appears likely across eastern France, north-central Germany into northern Poland on Tuesday – August 1st, 2017 *** Europe is dominated by two main large features, one being an extensive ridge across SSE part (an intense heat wave) and another feature being a large upper trough sitting over W Europe. In between, a powerful jet streak (70-80 knots at 500mb) travels from SW Europe across Germany into Baltic sea with an embedded short wave rapidly moving from N France across Germany – it serves as a focus for robust severe weather outbreak to occur. Another short-wave affects E Iberian peninsula while another one affects parts of Scandinavia. At surface, a difuse frontal
Kategooriad: Välismaa uudised

Spectacular mud flow captured in Pians, Tyrol, Austria – July 30, 2017

Severe Weather Europe - 31. Juuli 2017 - 11:42
A spectacular, textbook mud flow was captured on cameras in Pians, Tyrol, W Austria yesterday afternoon, July 30. A mud flow is a form of mass wasting and slope mass movement, similar to landslides and debris flows. It is a fast, rapidly surging flow, much faster than a landslide and more fluid than a debris flows. Mud flows usually originate from landslides, which become saturated with water and mobilize into a rapidly moving flow. The Pians mudflow caused little damage, except for filling the channel and spilling over bridges, requiring cleaning, but mudflows (and similar debris flows) can be deadly and there have been numerous occasions across the Alps of devastating such events. Mud flow and its deposits. Photo: Tirol’s
Kategooriad: Välismaa uudised

Follow up on the heat wave – Monday July 31st, 2017

Severe Weather Europe - 31. Juuli 2017 - 9:28
A blocking pattern dominates eastern half of Europe where an intensifying heat wave was spreading from SSW into central Europe past weekend. Yesterday’s max afternoon temps were locally already exceeding 35°C and even higher can be expected today. Here are peak afternoon temps across Iberian peninsula, Italy, central Europe countries and S Balkan countries yesterday – locally above 33-38 °C (e.g. S Greece, W Turkey central Balkan peninsula) with SSE Spain again up to 42 °C in some places! Europe is actually divided in two halfs with much cooler temps across W Europe and hot weather further ESE with deep trough over W Europe and an intense ridge over ESE Europe. These two maps reveal the still strengthening ridge with
Kategooriad: Välismaa uudised

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