Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology.

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Presentation transcript:

Cloud Types Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University Dr. Dave Dempsey Professor of Meteorology Department of Geosciences San Francisco State University

Steam fog on lake surface Steam fog on lake surface Lassen National Park, CA ~ 6,000 ft. elevation October calm clear night

Steam devil (steam fog) Yellowstone National Park, WY geothermal hot pool breeze blowing across pool

Steam devil (steam fog) Steam devil (steam fog) Yellowstone National Park, WY geothermal hot pool breeze blowing across pool

Port Townsend, Washington Mixing clouds

Contrail and altocumulus clouds Olympic Mts., WA

Contrails Mt. St. Helens, WA taken May 20, 1979 mountain erupted May 18, 1980

Eastern Sierra Nevada Mts. and Mono Lake, CA Contrails

Radiation fog and altostratus clouds Santa Rosa Valley, CA April pre-dawn calm clear night

Santa Rosa Valley, CA (sunrise, April) Radiation fog

Central Valley near Chico, CA (morning in December; clear night) Radiation fog

Central Valley near Chico, CA (morning in December; clear night) Radiation fog

Central Valley near Chico, CA (morning in December; clear night) Radiation fog

San Francisco Peninsula, Crystal Springs Reservoir (June) Advection fog

San Francisco Peninsula (looking southwest; June) Advection fog

San Francisco (June) Advection fog

San Francisco (June) Advection fog

Golden Gate, San Francisco June

Stratus clouds (marine push) North Cascades National Park, WA ~ 6,000 ft. elevation well inland from Puget Sound

Cirrus clouds Western Colorado

Cirrus clouds Acoma Pueblo, NM

Cirrocumulus clouds Baja California

Mt. Everest, Nepal Cirrostratus (halo, arcs, etc.)

Mono Lake, CA Mid- and high-level clouds

Mono Lake, CA Mid- and high-level clouds

Point Reyes, CA (Sept.) Altocumulus clouds

Western Colorado (June) Altocumulus clouds

Death Valley, CA (March) Altocumulus & cumulus clouds

Altocumulus clouds Chico, CA Daisies summer

Boulder, Colorado Stratocumulus (roll) clouds

S.E. Utah (May) Fairweather cumulus clouds

Mono Lake, CA (Aug.) Stratocumulus clouds

Crater Lake N.P, Oregon (July) Cumulus clouds

San Luis Valley, Colorado (June) Cumulus cloud

Eastern Colorado (June) Cumulus clouds

Eastern Utah (July) Cumulonimbus & cumulus clouds

Western Colorado (July) Cumulonimbus & cumulus clouds

Eastern Utah (July) Cumulonimbus cloud

Death Valley N.P., CA (March) Cumulonimbus cloud with anvil

Death Valley N.P., CA (March) Cumulonimbus cloud with anvil

Mojave desert, CA (March) Cumulonimbus cloud with anvil

Northern New Mexico (Feb.) Cumulonimbus cloud, snowing

Eastern Colorado (May) Cumulus cloud with rotating mesocyclone

Eastern Colorado (May) Cumulus cloud w/rotating mesocyclone, dust updraft

North Texas (May) Cumulus cloud w/wall cloud, tornado

Yellowstone N.P., WY (June) Mammatus clouds beneath cumulus anvil

S.E. Utah (August) Virga (evaporating rain)

Pileus cap cloud on cumulus cloud Cirrus clouds

Baja California (Feb.) Orographic wave clouds (lens clouds)

Cap cloud Mt. St. Helens, WA (May 1979, before it’s May 1980 eruption)

Cap cloud Mt. St. Helens, WA (May 1979, before its May 1980 eruption)

Orographic Precipitation and Rain Shadow

California Topography and Precipitation

Temperate rainforest Hoh rainforest, Olympic National Park, WA annual rainfall ~ 160”

North American Deserts  Great Basin  Mohave  Sonoran  Chihuahuan North American Deserts  Great Basin  Mohave  Sonoran  Chihuahuan

Sand dunes, Eureka Valley, Death Valley NP, CA

Precipitation Pattern, Maui, Hawaii

Hanakapiai Falls, Na Pali coast, Kauai, Hawai  annual rainfall ~ 80” Hanakapiai Falls, Na Pali coast, Kauai, Hawai  annual rainfall ~ 80”

Big Island of Hawaii Mauna Loa, Mauna Kea, prickly pear cacti