Guía de meteorología.CANADA

https://publications.gc.ca/collections/

collection_2017/eccc/En56-240-2013-eng.pdf

 

Table of Contents Acknowledgements ..................................................................................................................II Foreword..................................................................................................................................III SECTION I: METEOROLOGY 101...........................................................................................1 Chapter 1: Marine Meteorology Primer................................................................................1 1. Convention for Units of Measurement ..........................................................................1 2. Weather Maps................................................................................................................2 3. Forecasting .....................................................................................................................5 3.1 Marine Weather Services ......................................................................................5 3.2 Forecast Tailoring..................................................................................................7 3.3 Other Considerations ..........................................................................................10 4. Marine Safety ...............................................................................................................15 5. Marine Meteorology.....................................................................................................16 Chapter 2: Wind...................................................................................................................... 25 1. Introduction.................................................................................................................25 2. How Wind is Formed ...................................................................................................25 3. Effects of Atmospheric Stability on Wind....................................................................27 3.1 Stable Atmosphere..............................................................................................27 3.2 Unstable Atmosphere..........................................................................................28 4. Nearshore Effects on Wind ..........................................................................................29 4.1 Solar Heating .......................................................................................................29 4.2 Topography ............................................................................................................. 33 4.3 Combined Effects ................................................................................................39 Chapter 3: Sea State................................................................................................................ 45 1. Introduction.................................................................................................................45 2. The Anatomy of a Wave...............................................................................................46 2.1 How Waves Form................................................................................................46 2.2 Wave Characteristics...........................................................................................47 2.3 Understanding Wave Forecasts..........................................................................48 3. Other Influences on Waves..........................................................................................50

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las corrientes en Terranova

https://www.researchgate.net/figure/a-Map-showing

-the-major-surface-subsurface-currents-in-

the-North-Atlantic-Ocean-Blue_fig1_282901258

El patrullero de la Armada que zarpó de Cádiz para Ceuta sólo estuvo allí dos días

 

 

 

Diario de Cádiz

Fuentes militares confirman que partió hacia la ciudad autónoma precisamente el 18 de mayo, justo en medio de la crisis migratoria, "para incorporarse a labores de vigilancia ordinaria"

El buque llegó ayer a su base gaditana, corroboraron a este periódico las mismas fuentes

 

El patrullero de la Armada 'Medas'. / ARMADA ESPAÑOLA (Cádiz)

J. M.Cádiz, 28 Mayo, 2021 - 21:19h

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El patrullero de la Armada Española Medas (P-26), que zarpó urgentemente para Ceuta desde la Estación Naval de Puntales, en Cádiz, el pasado martes 18 de mayo para intervenir en labores de vigilancia en la crisis migratoria que se estaba viviendo en la ciudad autónoma sólo estuvo allí dos días, según ha podido saber este periódico. Ayer llegó a su base, según han confirmado a este periódico fuentes de la Armada Española.

A

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Calculating the tides: The Rule of Twelfths

 

 

 

Words by Will Forster & images by Jason Corroto, Magic Seaweed, NASA


   

Lets begin this piece by asking a question; how often do you consider the tides before going for a surf? Playa Guiones, where the Surf Simply resort is based is lucky to work all the way through from high to low. Where the tide is at any given time though may influence certain decisions before we paddle out; like for example where to surf, or which surfboard to ride. Typically at high tide there would be a slow, fatter wave breaking, and a fast more hollow wave breaking at low tide, with those characteristics transitioning through mid tide. This becomes even more critical when we travel up or down the coast

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The Complexities of Arctic Maritime Traffic

 

 

 

Christophe de Margerie at the dock in Yamal. Photo: Dimitriy Monakov

In late August 2017, the Russian icebreaking liquefied natural gas (LNG) carrier Christophe de Margerie made headlines in maritime traffic news for a record-setting transit of the Northern Sea Route (NSR). The ship transited the 2,193 nautical mile NSR in just six days, twelve hours, and fifteen minutes. It completed the entire journey from Hammerfest, Norway, to Boryeong, South Korea, in nineteen days—nearly thirty percent faster than the traditional Suez Canal route. During the transit, the vessel averaged just over fourteen knots, remarkable given that part of the transit was through ice fields that were 1.2 meters thick.1)

Such an accomplishment has fueled optimism,

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