Tundra climate is a Köppen climatic type with sub-freezing mean annual temperatures, large annual temperature ranges (albeit not as large as the adjacent continental subarctic climate), and moderately low precipitation. It is known for its frost-molded landscapes, extremely low temperatures, little precipitation, depleted nutrients, and short growing seasons. This article will explain to you about Tundra which will be helpful in preparing Geography for the UPSC Civil service exam.

Tundra - Concept

• The tundra biome is a cold, treeless plain where harsh conditions make survival difficult for both plants and animals.
• Tundra covers around 20% of the Earth's land surface.
• It's freezing - The tundra is the coldest biome.
• In the tundra, the average temperature is roughly -18 degrees Fahrenheit.
• Tundra Climate is also called Polar Climate or Arctic Climate or Frigid Climate.

Distribution

• North of the Arctic Circle and south of the Antarctic Circle are where they are spread.
• Greenland and Antarctica's ice caps are restricted to the highlands and high latitude regions.
• Antarctica is the world's largest single ice cap in the southern hemisphere (10,000 feet thick).
• The lowlands — Greenland's coastal strip, northern Canada and Alaska's desolate regions, and Eurasia's Arctic shoreline – all have tundra climates.

Temperature

• A very low mean yearly temperature characterizes the tundra climate.
• Temperatures can drop to 40 – 50 °C below freezing in the middle of winter.
• Summers are hotter than winters.
• Temperatures above freezing degrees are usually present only for four months.
• There are weeks of complete darkness in the Arctic and Antarctic Circles (Rotation and Revolution).
• Plants are unable to grow because the earth remains solidly frozen.
• Frost can strike at any time, and blizzards with winds of up to 130 miles per hour are not uncommon.

Precipitation

• Snow and sleet are the most common forms of precipitation.
• Convectional rainfall is almost non-existent.

Natural Vegetation

• In the tundra, there are no trees.
• Mosses, lichens, and other low-level vegetation can be seen here and there.
• The climate on the coastal lowlands is slightly more favorable.
• Reindeer moss and resistant grasses thrive in the coastal lowlands, providing the only source of pasturage for the animals.
• Berry-bearing bushes and Arctic flowers bloom during the limited summer.
• Birds travel north in the summer to feed on the plethora of insects that emerge when the snow thaws.
• Wolves, foxes, musk-ox, Arctic hare, and lemmings are among the mammals that live in tundra areas.
• Penguins can only be found in Antarctica.

Human Activities

• The tundra's human activities are mostly limited to the coast.
• A semi-nomadic lifestyle is maintained.
• The Eskimos live in Greenland, northern Canada, and Alaska.
• They reside in little igloos during the winter.
• Fish, seals, walruses, and polar bears supply their sustenance.
• Rifles are being employed to track down animals instead of traditional harpoons.

Recent Advancements

• Mineral discoveries have resulted in the formation of new communities.
• Gold is mined in Alaska, petroleum is mined in the Kenai Peninsula in Alaska, and copper is mined in Canada's Rankin Inlet.
• With iron ore reserves surrounding the Great Lakes dwindling, Labrador's iron ore deposits are becoming more important. To transport the ores to the St. Lawrence River, new railway lines have been built.
• Rich iron ore reserves at Kiruna and Gallivare aided Sweden's iron and steel export trade, as well as other metallurgical goods.
• Timber and fur may now be shipped from Siberia thanks to new ports on Eurasia's Arctic shoreline. The freezing seas are now navigable thanks to modern icebreakers.

Significance

• The Tundra plays a significant part in the planet's temperature management.
• It works as a carbon sink, absorbing carbon dioxide from the atmosphere and assisting in the mitigation of the negative impacts of carbon emissions.

Conclusion

Many of the plants and animals that have adapted to survive in cold, dry tundras are threatened by climate change, as are many of the plants and animals that have adapted to live there. To save the tundra, a variety of measures can be taken. Above all, they must be preserved as they work as a carbon sink.

FAQs

Question 1: What is the Tundra climate?

Question 2: What are the main features of the Tundra climate?

Question 3: Where can Tundra climates be found in the world?

Question 4: What types of plants and animals live in the Tundra?

Question 5: What are the environmental challenges in the Tundra biome?

MCQs

1. What is the primary characteristic of the Tundra climate?

A) Hot summers and cold winters

B) Long, harsh winters with short summers

C) High humidity and abundant rainfall

D) Tropical vegetation with high biodiversity

2. Which of the following is a key feature of the Tundra biome?

A) High biodiversity and dense forests

B) Permafrost and low-growing vegetation

C) Frequent rainfall and tropical conditions

D) Mild temperatures and heavy snowfall

3. What is the main reason for the lack of trees in the Tundra?

A) Too much sunlight

B) Lack of precipitation

C) Extremely cold temperatures and permafrost

D) High winds

4. Which of the following is a typical animal found in the Tundra biome?

A) Elephant

B) Polar bear

C) Kangaroo

D) Zebra

5. Where is the Tundra climate most commonly found?

A) Near the equator

B) High latitudes near the North and South Poles

C) Tropical rainforests

D) Desert regions

GS Mains Questions and Model Answers

Q1: Discuss the characteristics and significance of the Tundra biome in the global climate system.

Answer: The Tundra biome plays a vital role in the global climate system due to its unique characteristics:

• Cold Temperatures: The Tundra is marked by extremely low temperatures for most of the year, with very short summers and long winters. This results in permafrost, where the ground remains frozen throughout the year.
• Low Biodiversity: The Tundra has low biodiversity due to its harsh conditions. It supports only cold-adapted plants such as mosses and lichens, and animals like polar bears and snowy owls.
• Fragile Ecosystem: The Tundra biome is highly sensitive to disturbances and has a slow recovery rate. Small changes in temperature or human interference can have significant and long-lasting effects on the environment.
• Climate Regulation: The Tundra plays an important role in carbon storage through the permafrost, which traps carbon and prevents its release into the atmosphere. This makes it a key player in the global carbon cycle.
• Climate Change Impact: Due to its role in carbon storage, the melting of permafrost as a result of climate change poses a risk by releasing greenhouse gases like methane, which further contribute to global warming.

In conclusion, the Tundra biome is crucial to the global climate system, acting as a carbon sink, and its fragile ecosystem makes it vulnerable to climate change.

Q2: How is the Tundra biome being affected by global warming, and what are the potential consequences?

Answer: Global warming is having a profound impact on the Tundra biome. The following are some of the key effects:

• Melting of Permafrost: Rising temperatures are causing permafrost to thaw, which releases stored carbon and methane into the atmosphere, further exacerbating global warming.
• Changes in Flora and Fauna: The warming climate is altering the habitat for species in the tundra. For example, polar bears and Arctic foxes are facing challenges due to shrinking ice cover and shifting prey availability.
• Changes in Vegetation: Warmer temperatures are allowing some plants to grow in areas that were previously too cold, leading to shifts in vegetation patterns. However, the ability of tundra plants to adapt is limited due to the short growing seasons.
• Rising Sea Levels: As the Arctic ice melts, sea levels rise, which could affect coastal tundra regions and displace human populations and wildlife that rely on these areas.
• Human Impact: The thawing of the permafrost can affect human infrastructure, such as buildings and roads, which were built on frozen ground.

The consequences of global warming in the tundra are far-reaching, affecting not only the local ecosystems but also contributing to climate change through the release of greenhouse gases.

Q3: Evaluate the impact of human activity on the Tundra biome.

Answer: Human activity has a significant impact on the Tundra biome, which is already fragile due to its extreme climate. Some key impacts include:

• Oil and Gas Extraction: The discovery of oil and gas reserves in tundra regions, particularly in Alaska and Siberia, has led to extensive industrial development, which disrupts local ecosystems and increases the risk of pollution.
• Climate Change: Human-induced climate change is causing temperatures to rise, leading to permafrost melting and shifts in the vegetation and wildlife of the tundra.
• Mining and Resource Extraction: Mining operations can lead to habitat destruction, pollution of water sources, and disruption of the natural landscape, affecting both flora and fauna.
• Human Settlements: As humans settle in tundra regions, there is increased pressure on the environment, with activities such as construction, logging, and hunting contributing to habitat loss and resource depletion.
• Tourism: While tourism can bring economic benefits, it also leads to environmental degradation, with potential harm to sensitive ecosystems and species that are not well adapted to human presence.

In conclusion, human activity is having a significant and often detrimental impact on the Tundra biome, threatening its delicate ecosystems and accelerating the effects of climate change.

Previous Year Questions on the Tundra

1. UPSC CSE 2020

Question: "Describe the characteristics of the Tundra biome and explain its role in the global climate system."

Answer: The Tundra biome is characterized by extreme cold temperatures, long winters, short summers, and permafrost. It plays a critical role in the global climate system by acting as a carbon sink, trapping carbon in frozen soil. The warming of the tundra due to climate change is having significant effects, including the release of greenhouse gases and the disruption of ecosystems.

2. UPSC CSE 2019

Question: "Discuss the impact of climate change on the Tundra biome and its inhabitants."

Answer: Climate change is causing the Tundra biome to warm at an accelerated rate, leading to the thawing of permafrost, which releases greenhouse gases into the atmosphere. This is causing shifts in vegetation and wildlife patterns, threatening the survival of species such as polar bears and Arctic foxes. Additionally, the thawing permafrost disrupts human infrastructure and releases methane, a potent greenhouse gas.