Volcanic and Solar Forcing of the Tropical Pacific over the Past 40 years

<climate forcing>

Jamie Lee20100502

IBBIOLOGY SL

Where data comes from? What is it about?

Volcanic and Solar Forcing of the Tropi-cal Pacific over the Past 40 years

• ftp://ftp.ncdc.noaa.gov/pub/data/paleo/climate_forcing/mann 2005/mann2005.txt

• 1. Tropical Solar Radiative Forcing -Tropical Solar Radiative Forcing, W/m2 in 40 years 1959-1999

• 2. Tropical Volcanic Radiative Forcing –Tropical Volcanic Radiative Forcing, W/m2 in

40 years 1959-1999

What data does this method?

• The response of El Ni to natural radiative forcing changes over the past 40year is investigated based on numerical experi-ments employing the Zebiak-Cane model of the tropical Pa-cific coupled ocean-atmosphere system. Previously published empirical results demonstrating a statistically significant ten-dency toward El Ni conditions in response to past volcanic ra-diative forcing are reproduced in the model experiments. A combination of responses to past changes in volcanic and so-lar radiative forcing closely reproduces changes in the mean state and interannual variability in El Ni in past centuries recorded from fossil corals. The dynamics of El Ni thus appear to have played an important role in the response of the global climate to past changes in radiative forcing. ftp://ftp.ncdc.noaa.gov/pub/data/paleo/climate_forcing/mann2005/mann2005.txt

What is the relationship between the data and climate?

• Volcanic AerosolsVolcanic eruptions can inject large amounts of aerosols into the atmos-phere, increasing the earth's albedo (reflectivity) and cooling the climate.

http://www.ncdc.noaa.gov/paleo/forcing.html

  Provide at least one diagram/image of "data" gathered your way which shows how to interpret

this kind of data.

• Data set was from the 1000years ago, however, I cut the data from 1959-1999 to make it simpler and those data became recent data (40years)

1. Tropical Solar Radiative Forcing -Tropical Solar Radiative Forcing, W/m2 in 40 years

1959-1999

1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 20050

0.05

0.1

0.15

0.2

0.25

0.3

0.35

0.4

0.45

Tropical Solar Radiative Forcing, W/m2

Tropical Solar Radiative Forcing, W/m2

2. Tropical Volcanic Radiative Forcing –Tropical Volcanic Radiative Forcing, W/m2 in

40 years 1959-1999

1955 1960 1965 1970 1975 1980 1985 1990 1995 2000 2005

-4

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0

Tropicalv Volcanic Radiative Forcing, W/m2

Tropicalv Volcanic Radiative Forcing, W/m2

My own visual image

What data are you collecting? What does the data tell you? What does the data have

to do with climate?• I collected data of Volcanic and Solar Forcing of

the Tropical Pacific over the Past 40 years, and this data tell me that volcanic and solar forces are opposite since solar data contains positive re-sults and volcanic contains negative results. The dynamics of data thus appear to have played an important role in the response of the global climate to past changes in radiative forcing.

• There for the climate of recent years had been var-ious with cold and warm weather. Like global warming, THIS made climate change dynamically!