Water in the Atmosphere | Class 11 Geography Notes
By ConceptScroll Team · Published on 17 July 2026 · 5 min read
Water in the Atmosphere – this guide gives you a concise, exam-ready overview of Water in the Atmosphere from Class 11 Geography, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
Warm Temperate (Mid-Latitude) Climates-C
Warm temperate or mid-latitude climates (Group C) occur between 30° and 50° latitude, mainly along the eastern and western margins of continents. These climates generally have warm summers and mild winters. They are divided into four types: Humid Subtropical (Cfa and Cwa), Mediterranean (Cs), and Marine West Coast (Cfb). The Humid Subtropical climate (Cwa) is found poleward of the Tropics of Cancer and Capricorn, such as in the North Indian plains and South China interior plains. It is characterized by hot summers and dry winters, similar to the Aw tropical wet and dry climate but with warmer winters. The Mediterranean climate (Cs) occurs around the Mediterranean Sea and along the west coasts of continents between 30° and 40° latitude, including Central California, Central Chile, and parts of Australia. It is characterized by hot, dry summers and mild, rainy winters, with average summer temperatures around 25°C and winter temperatures below 10°C. Annual precipitation ranges from 35 to 90 cm. The Humid Subtropical climate with no dry season (Cfa) occurs on the eastern parts of continents in subtropical latitudes, such as eastern USA, southern and eastern China, and parts of Australia. These regions experience rainfall throughout the year due to unstable air masses, with summer thunderstorms and winter frontal precipitation. Mean summer temperatures are around 27°C and winter temperatures range from 5°C to 12°C. The Marine West Coast climate (Cfb) lies poleward of the Mediterranean climate on the west coasts of continents, including northwestern Europe, west coast of North America, southern Chile, southeastern Australia, and New Zealand. Due to maritime influence, temperatures are moderate with small annual and daily ranges. Summer temperatures range from 15°C to 20°C and winter temperatures from 4°C to 10°C. Precipitation occurs throughout the year, varying from 50 to 250 cm annually.
🔗 Connection: This section prepares for the next discussion on Cold Snow Forest Climates (Group D).
Frequently asked questions
1. Multiple choice questions. (i) Which one of the following is suitable for Koeppen's "A" type of climate? (a) High rainfall in all the months (b) Mean monthly temperature of the coldest month more than freezing point (c) Mean monthly temperature of all the months more than 18° C (d) Average temperature for all the months below 10 C (ii) Koeppen's system of classification of climates can be termed as : (a) Applied (b) Systematic (c) Genetic (d) Empirical (iii) Most of the Indian Peninsula will be grouped according to Koeppen's system under: (a) "Af" (b) "BSh" (c) "Cfb" (d) "Am" (iv) Which one of the following years is supposed to have recorded the warmest temperature the world over? (a) 1990 (b) 1998 (c) 1885 (d) 1950 (v) Which one of the following groups of four climates represents humid conditions? (a) A—B—C—E (b) A—C—D—E (c) B—C—D—E (d) A—C—D—F
(i) (c) Mean monthly temperature of all the months more than 18° C Explanation: Koeppen's 'A' type climate is tropical, characterized by high temperatures throughout the year, with mean monthly temperatures above 18°C.
(ii) (d) Empirical Explanation: Koeppen's classification is empirical because it is based on observed temperature and precipitation data rather than genetic or applied criteria.
(iii) (d) "Am" Explanation: Most of the Indian Peninsula falls under the 'Am' category, which is trop
2. Answer the following questions in about 30 words. (i) Which two climatic variables are used by Koeppen for classification of the climate? (ii) How is the "genetic" system of classification different from the "empirical one"? (iii) Which types of climates have very low range of temperature? (iv) What type of climatic conditions would prevail if the sun spots increase?
(i) Koeppen used temperature and precipitation as the two main climatic variables for classification.
(ii) Genetic classification is based on the origin and causes of climate, while empirical classification is based on observed data like temperature and rainfall.
(iii) Tropical climates have very low range of temperature because temperatures remain fairly constant throughout the year.
(iv) If sunspots increase, it generally leads to warmer climatic conditions due to increased solar radiation.
3. Answer the following questions in about 150 words. (i) Make a comparison of the climatic conditions between the "A" and "B" types of climate. (ii) What type of vegetation would you find in the "C" and "A" type(s) of climate? (iii) What do you understand by the term "Greenhouse Gases"? Make a list of greenhouse gases.
(i) 'A' type climate is tropical, characterized by high temperatures throughout the year and significant rainfall, supporting dense vegetation like tropical rainforests. 'B' type climate is arid or semi-arid, with low precipitation and high temperature variability, leading to sparse vegetation such as deserts and grasslands.
(ii) In 'C' type (temperate) climates, vegetation includes deciduous and mixed forests due to moderate temperature and rainfall. In 'A' type (tropical) climates, vegetation
Project Work Collect information about Kyoto declaration related to global climate changes.
The Kyoto Declaration, also known as the Kyoto Protocol, is an international treaty adopted in 1997 that commits its parties to reduce greenhouse gas emissions, based on the scientific consensus that global warming is occurring and human-made CO2 emissions are driving it. The protocol sets binding emission reduction targets for developed countries to combat climate change and its effects.
Students should collect detailed information on the objectives, mechanisms, and impact of the Kyoto Protoco
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