LET IT SNOW. What is Snow??? Snowflakes are the result of water vapor FREEZING onto a condensation nucleus. (dust, dirt, etc)

Slides:



Advertisements
Similar presentations
THE WATER CYCLE The water cycle — the continuous exchange of water between Earth's surface and atmosphere — is Earth's natural mechanism for recycling.
Advertisements

Clouds and Precipitation
Water in the Air Pgs
The Igloo A Dome of Many Wonders. Outline Igloo basics Igloo science Construction of an igloo An igloo in Hyde Park.
Persistent and non-persistent weak Layers
Earth Systems and Patterns: SC.5.E.7.3
Precipitation Chapter 7
Snow Pack Metamorphosis
AOSC 200 Lesson 8.
Metamorphism Due To Direct Weather Effects Learning Outcomes Understand the effects of direct weather on the snowpack. Understand melt-freeze and its effect.
Physical Properties of the Snowpack Richard Brandt – University of Washington Paul Smith’s College 21 Feb 2006.
BY SALLY, JINNY AND TINA.. In the 52nd Venice Biennale Igloo has been invited to show the work. “I’ve never been to Venice before so showing work there.
{ Hydrosphere. H2O molecule Hooray for Polarity!!!! Polarity= Having a positively and a negatively charged end.
Inside the Belly of the Beast Atmos 3200/Geog 3280 Mountain Weather and Climate Wendy Wagner, Leigh Jones and C. David Whiteman.
Understanding crevasses: Introduction
{ WINTER CAMPING Miranda and Ally. -shell jacket -shell jacket -shell pants -down jacket -fleece jacket -long underware (top and bottom) -wool socks -2.
ATS 351 Lab 7 Precipitation March 7, Droplet Growth by Collision and Coalescence Growth by condensation alone takes too long Occurs in clouds with.
Have you ever just looked at clouds?  Why do we have clouds?  Why are there different shapes?  What can they tell us about the weather?
Winter Outdoor Training Outdoor Shelters. The simplest structure to build is a quinzee. Basically, this is a snow mound with a cave carved into it.
Winter Wonderland Our Natural World Described Mathematically.
IPY/NSTA Web Seminar: The Fragile Ice LIVE INTERACTIVE YOUR DESKTOP Thursday, May 3, :00 p.m. to 8:00 p.m. Eastern time.
Fog, mist and temperature inversions TimeTemp In the early evening, the hill tops cool more rapidly than the valleys (being high and exposed). The.
Chapter 7 – Precipitation Processes
Winter Ecology Why is it cold in winter? We’re farther away from the sun? NO!! We’re tilted away from the sun? YES!!
WINTER STORMS By: Hannah Winter Storms Moisture evaporates in the air. Snow falls into warm air and melts into rain. An ice storm is a type of winter.
Winter Camping -clothing -shelters -cooking -sleeping.
Welcome to Mr. Conroy’s Science Class co-made by Logan L., Vince D., Angela S., & Kayana C.
WEATHER By: Jimmy Burgard. What is evaporation? evaporation is the process by which water changes from a liquid to a gas or vapor. if you put an ice cube.
5.03 Moisture References: FTGU pages ,
These notes are provided to help you pay attention IN class. If I notice poor attendance, fewer notes will begin to appear on these pages Snow Measuring.
Water in the Atmosphere I. Atmospheric Moisture Water exists on Earth in 3 forms:  Liquid  Solid (ice)  Gas.
Winter Camp Awareness Tents and Terrain The Objective: To Provide you with information in selecting the proper tent for snow camping and how to construct.
By: Lori Sedlak. Humidity Measure of water vapor in atmosphere Water vapor is gaseous form of water - Also called atmospheric moisture Increased air temperature.
Chapter 7: Climate Weather. Precipitation  Precipitation occurs when a cold air mass meets a warm air mass.  The cold air, being more dense, forces.
WATER.
M o u n t a i n T r a i n i n g T r u s t A v a l a n c h e A w a r e n e s s Starting Point Trigger Terrain Snow pack Simplistic Snow consolidates through.
Water cycle and precipitation. Evaporation/Transpiration · Water enters the atmosphere as water vapor through evaporation and transpiration, plants releasing.
Weathering and Erosion
Snow Shelters Winter School 2002 By Hector Briceno Pictures from
How to Build a Quinzee By: Wyatt Tyndall. Quinzees  A quinzee is basically a combination of an igloo and a snow cave put together. A quinzee works well.
Thermodynamics Jillian Campbell, Karly Johnson, Jared O, Daniel.
The Chuck Norris of snow shelters
Relative Humidity. Humidity  the measure of the amount of water in the air  high humidity =lots of moisture in the air.
Unit 3 Lesson 3 How Do We Measure Weather?
Winter Weather Homeroom Read. Warm Up: Define WINTER WEATHER ADVISORIES WINTER STORM WATCH WINTER STORM WARNING FROST/FREEZE WARNING.
Have you ever just looked at clouds?  Why do we have clouds?  Why are there different shapes?  What can they tell us about the weather?
Winter Camping 1 st Stittsville Scout Troop SECURING TENTS SNOW SHELTERS LAYERS FOR SLEEPING Presented by: Paul Young-Davies.
Winter Camping Mike, Sara. Clothing  Winter Coat: 1 large, or layer up in small  Hat: Keeps head warm during bed time  Warm socks: 1 large wool pair,
LET IT... SNOW!!.
Birth of a Snowflake How they are formed This assignment has been developed to instruct you on the use of sound within a PowerPoint presentation. Therefore,
Precipitation is any type of water that forms in the Earth's atmosphere and then drops onto the surface of the Earth.
Cloud Formation. Review LCL & Dew Point The Sun’s radiation heats Earth’s surface, the surrounding air is heated due to conduction and rises because of.
Winter Camping Tips for a comfortable trip. Clothing  You need to bring wool socks, insulated boots, snow pants, insulated jacket, balaclava, toque,
By: Logan Morey “I believe I have seen hell and it is white, snow-white” -Elizabeth Gaskell.
On a sunny day, water from a puddle evaporates. Evaporation is liquid water dissolving into the air. It becomes water vapor. The water behaves like a gas,
Winter Storms By: Neko and Christian.
Stability, Adiabatic Processes, Precipitation
Winter Storms By: Taylor and Maia.
Winter Storms By: Nolan and Tyler.
Building the Quinzhee Outdoor Education 9 Emergency Shelter.
Water in the Air.
The Chuck Norris of snow shelters
It all starts with water
Stories in the Snow involves….
Winter Storms By: Christian and Neko.
Winter Storms By: Taylor and Maia.
Shelter!! Your number 1 priority in harsh conditions
PRECIPITATION Chapter 11.3 notes.
“The sky is falling!” -Chicken Little
How do snow, sleet, and hail form?
Presentation transcript:

LET IT SNOW

What is Snow??? Snowflakes are the result of water vapor FREEZING onto a condensation nucleus. (dust, dirt, etc)

Elaborate patterns develop as the crystals grow.

Moisture and Temperature Influence Crystal Type

Microphysical Properties of Snow Primary snow grain types: Plate (new snow) Column (new snow) Dendrite (new snow) Images from: The Snowflake: Winter’s Secret Beauty -- by Kenneth Libbrecht and Patricia Rasmussen

Plates

Columns

Dendrites

Needles

Graupel (Melted grains)

ARTIFICAL SNOW

TYPES OF SNOW CRYSTALS MORE INFO HERE… AND HERE.

The Changing Snow Pack… Snow has three main metamorphism processes. –Destructive Metamorphism –Constructive Metamorphism –Melt Metamorphism

Destructive Metamorphism The shape and structure of the flake is destroyed, but the mechanical strength of snow is increased due to the Hydrogen bonding of individual ice grains. (AKA Sintering)

Constructive or Temperature Gradient Metamorphism This happens after destructive phase. Here the water vapor moves upward resulting from the temperature gradient of the snow and the pores. This creates more space in the subnivean environment below the surface of the snow known as the depth hoar.

Insulative Value and the Subnivean Environment The AIR SPACE IN THE SNOW creates good insulation from the cold temperatures above the snow pack. Many plants, insects and animals rely on the snow cover to keep safe and “warm” for the winter.

Melt Metamorphism The final stage of snow metamorphism is Melt. Snow is exposed to temperatures above freezing. Water vapors move Down (and up from the ground) creating a crust layer in the middle.

Quinzhee Construction

Quinzhee Construction Lab Quinzhee is the Inuit word for snow shelter. It is made by hollowing out a pile snow. Used by native Americans who lived in forested areas. Igloo: Constructed by using blocks of wind packed snow (or ice). Used by native Americans who lived in open areas.

Design Features Dome shape = structural stability Thick walls = insulation Vent holes – escape of moisture A raised platform takes advantage of warmer air higher up A small, low entrance prevents loss of warm air The entrance hole positioned perpendicular to the prevailing wind is protected from direct wind drafts

Step 1: Shoveling –Shovel a pile of snow into a mound big enough to hold as many people in your group. - Poke sticks 1 foot in. –Let the mound “Sinter” for at least four hours. (snow crystals will bond strong) (Hydrogen Bond)

Step 2: DIGGING - Need to have a person outside shelter at all times in case it collapses. –Keep entrance small and low. – Hollow the shelter out from the top down. (DIG UP!!!) –Stop digging when you see the sticks.

Step 3: Sleeping –Make elevated snow beds (above the door) to allows cold air to flow down. –Poke an air vent on ceiling to allow moister to escape. –Block door with backpack.