Q1. Define the term anomaly and explain what the global reference temperature us
ID: 152435 • Letter: Q
Question
Q1. Define the term anomaly and explain what the global reference temperature used to define this anomaly is (i.e., area and dates).
Q2. Report the trends in temperature per century for land in degrees C per century from these data and explain in your own words why the ocean has not increased in temperature as much as land has during this time?
Q3. Does the average land or ocean surface absorb more energy from the sun? Explain why or why not.
Global Land Temperature Anomalies, January-December Temperature Anomalies - 1880-2017 Trend +1.01 CACentury 1.3 1.2 OAA 2.0 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 0.1 0.2 0.3 0.4 0.5 0.6 1.0 0.0 1.0 1880 890 1900 1910 920 1930 1940 1950 960 1970 1980 990 2000 2010Explanation / Answer
Q1 Anomalies are defined as the variation of measured value from the mean value over a long interval of time. In the case of temperature anomalies are calculated when the temperature at a particular time is compared to the average temperature value of certain years. Normally climatologists use data for last 30 years to make the base line and then compare the data of current period to find the anomaly.
Q2. If we see the data for the last century we’ll find that the temperature is following a straight line curve with positive slope that means the temperature is increasing with each passing years and from the start of the century to later part of 1970s the anomalies are negative but from 1980s the anomalies are positive in nature and the value of anomaly is getting higher with each passing year.
First of all the heat capacity of water is higher and secondly water evaporates when the temperature rises and hence the heat is used in evaporation due to these reason the ocean has not increased in temperature as much as land has during this time.
Q3. Yes if we consider the average then both ocean and land surfaces absorb equal amount of energy from the sun because the radiation coming from the sun is equal for land as well as for oceans but due to efficient convection process in ocean the heat is dispersed effectively as compared to the land surface.
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