Results 51 to 60 of about 536 (192)

Analysis Synoptic Patterns for Forest Fires Risk in Northern of Iran [PDF]

مخاطرات محیط طبیعی, 2018
Iran is one of the countries in the Middle East and North of Africa that face high risk in terms of wildfire occurrence in forested areas. We had used the record data SLP, 850 and 500hpa, temperature, precipitation, relativity humidity, speed and ...
Dariush Rahimi, Samaneh Khademi
doaj   +1 more source

Observed Linkages Between Marine Heatwaves and Extreme Weather Over Land: A New Zealand Case Study

International Journal of Climatology, EarlyView.
Marine heatwaves consistently warm New Zealand's land surface, but rainfall impacts occur only when synoptic systems enable moisture transport. This 38‐year analysis shows MHWs act as thermodynamic background drivers of heat and conditional amplifiers of extreme rainfall events or droughts.
Matthew Chinappa, Hamish Lewis, Luke J. Harrington, Peter B. Gibson   +3 more
wiley   +1 more source

Identification and characterization of foehn events in Beijing and their impact on air pollution episodes [PDF]

Atmospheric Chemistry and Physics
This study proposes a method for identifying foehn events in Beijing using automatic weather station (AWS) data, considering upper-air wind direction, topography, meteorological changes, and foehn propagation.
J. Li, J. Li, J. Li, J. Li, J. Zhang, J. Zhang, M. Bai, J. Su, J. Su, Q. Li, Q. Li, X. Jia, X. Jia   +12 more
doaj   +1 more source

Characteristic Features of the Antarctic Surface Air Temperature with Different Reanalyses and In Situ Observations and Their Uncertainties

Atmosphere, 2023
Antarctic surface air temperature (SAT) variability is characterized by strong seasonality and regionality, which are associated with the tropical–polar teleconnections and the radiative forcing caused by the concentration changes in ozone and other ...
Meijiao Xin, Xichen Li, Jiang Zhu, Chentao Song, Yi Zhou, Wenzhu Wang, Yurong Hou   +6 more
doaj   +1 more source

Tracking Summer Greenland Blocking: The Upstream Pathway Shapes Historical Extremes and Future Change

International Journal of Climatology, EarlyView.
This study investigates summer Greenland atmospheric blocking using the Lagrangian tracking Python package blocktrack applied to ERA5 reanalysis and CMIP6 models. Two types of blocks—upstream (Northern Canada origin) and retrograding (Northern Atlantic origin)—are distinguished, with upstream blocks driving recent observed frequency increasing trends ...
Michele Filippucci, Jacob Maddison, Simona Bordoni   +2 more
wiley   +1 more source

Suggestions for unifying the parametrizations of turbulent orographic form drag, mountain wave drag, and flow blocking

Quarterly Journal of the Royal Meteorological Society, EarlyView.
A theory for the interaction between a boundary layer and a low mountain is used to provide estimates of the turbulent orographic form drag, upward‐propagating mountain gravity‐wave drag, and trapped lee‐wave drag (case shown in the figure). After reviewing briefly how these processes are represented in weather and climate models, we propose a ...
Francois Lott, Anton Beljaars, Bruno Deremble   +2 more
wiley   +1 more source

Observations and numerical simulations of a valley‐exit wind in the Alpine Bolzano basin

Quarterly Journal of the Royal Meteorological Society, EarlyView.
The evolution and spreading of the nocturnal valley‐exit wind flowing from the Isarco Valley into the Bolzano basin, in the Italian Alps, are found to be influenced by the basin temperature stratification. Measurements and high‐resolution simulations show that a cold‐air pool favors an upward trajectory of the flow at the exit of the valley.
Federica Gucci, Andrea Zonato, Marco Falocchi, Dino Zardi, Lorenzo Giovannini   +4 more
wiley   +1 more source

On the formation of foehn winds on the northern side of the Alps

Meteorologische Zeitschrift, 2012
This is the translated and edited version of a paper entitled “Über die Entstehung der Föhnwinde auf der Nordseite der Alpen (On the formation of foehn winds on the northern side of the Alps) by Heinrich von Ficker which was published in Meteorologische Zeitschrift 27, 439-451.
openaire   +2 more sources

Outracing a National Level Model Racing Car Champion: A Hybrid Model‐Based Data‐Driven Approach

Journal of Field Robotics, EarlyView.
ABSTRACT This paper discusses lap time optimization, focusing on a single lap without considering opponents in autonomous racing. The paper presents a control and optimization architecture composed of a model‐based low level controller and a higher level iterative learning algorithm with the goal of obtaining the fastest qualifying lap in autonomous ...
Mustafa Alp, Matteo Corno, Giulio Panzani, Sergio Matteo Savaresi   +3 more
wiley   +1 more source

How weather got its words: a history of meteorological English – Part 1: Old English to the Age of Discovery

Weather, EarlyView.
The English language is a gargantuan, gluttonous beast. It has become extraordinary among its peers in its powers of assimilation – such that we rarely consider the diverse origins of the words we use. In this two‐part paper, we will explore these origins, including the Pontic‐Caspian steppe, the British Empire, latinophone scientists and a TV show. We
Kieran M. R. Hunt
wiley   +1 more source