2001-2010: Hottest decade with climate extremes

370,000 deaths globally due to extreme weather and climate conditions, says World Meteorological Organization report

 
By Jyotsna Singh
Last Updated: Thursday 17 September 2015 | 10:08:27 AM

map

The two most notable environment-related events in India this year have been severe drought and severe flooding in many states, with Uttarakhand having been the biggest spectacle. Such high-impact climate extreme events have been witnessed globally on an unprecedented scale in the decade 2001-2010. This has been the warmest decade so far since the initiation of modern measurements in 1850. These observations have been made by World Meteorological Organization  (WMO) in a recently released report titled ‘The global climate 2001-2010, a decade of climate extremes’.

The 100-page report compiled and analysed data on global and regional temperatures and precipitation collected from multiple agencies. It incorporated findings from 139 National Meteorological and Hydrological Services, apart from socio-economic data and analysis from several UN agencies and partners. It also analysed extreme events like the heat waves of Europe and Russia, tropical cyclone Nargis in Myanmar, droughts in the Amazon basin and floods in Pakistan.

Extreme weather increasingly common

Floods were the most frequently experienced extreme events over the course of the decade. India was particularly affected in 2005, Eastern Europe in 2001 and 2005, Africa in 2008, Asia and especially Pakistan in 2010, and Australia in 2010. 

Droughts affect more people than any other kind of natural hazard owing to their large scale and long-lasting nature. The decade 2001–2010 saw droughts occur in all parts of the world. Some of the highest impact and long-term droughts struck Australia (2002 and other years), East Africa (2004 and 2005, resulting in widespread loss of life) and the Amazon Basin (2010) with negative environmental impacts.

According to the US National Oceanic and Atmospheric Administration (UNOAA), 2001-2010 was the most active decade since 1855 in terms of tropical cyclone activity in the North Atlantic Basin. An average of 15 named storms per year was recorded, well above the long-term average of 12. 

graph

World turns hotter

Explaining the decadal analysis, WMO secretary general Michel Jarraud said that in natural climate variations some years are cooler while others are hotter, making a case for a longer time period to develop a comprehensive understanding of changing climate. "On an annual basis, the global temperature curve is not a smooth one. On a long-term basis the underlying trend is clearly in an upward direction, more so in recent times,” said Jarraud. 

Extreme weather in 2001-2010
Deaths: More than 370,000 died as a result of extreme weather and climate conditions (20 per cent higher than 1991-2000)

Deaths due to heat wave alone: 136,000 in 2001-2010, compared to less than 6,000 in 1991-2000 (the increase of more than 2,000 per cent was due to heat wave in Europe in 2003 and in Russia in 2010)

Decline in deaths due to storms (16 per cent) and floods (43 per cent), primarily due to better early warning systems

Average population exposed to flooding every year increased by 114 per cent globally between 1970 and 2010 (world population in corresponding duration increased by 87 per cent)

Number of people exposed to severe storms in cyclone prone areas increased by 192 per cent

 

The decade was warmest for both hemispheres and for both land and ocean surface temperatures. Arctic sea ice declined rapidly, and there was loss of mass from the Greenland and Antarctic ice sheets and the world's glaciers. The global mean sea level rose about 3 mm per year, compared to an average of 1.6 mm rise per year for the 20th century. The average land and ocean-surface temperature for the decade 2001-2010 was estimated to be 14.47°C, which is 0.47°C above the 1961–1990 global average and +0.21°C above the 1991–2000 global average. Every year of the decade except 2008 was among the 10 warmest years on record. Nearly 94 per cent of reporting countries had their warmest decade in 2001-2010 and no country reported a nationwide average decadal temperature anomaly cooler than the long term average. 

Some 44 per cent of countries in the survey reported nationwide hottest temperature records in 2001-2010, compared to 24 per cent in 1991-2000. However, coldest daily minimum temperature absolute records showed an opposite pattern. In 1961-1970, nearly 32 per cent of the countries reported nationwide lowest minimum temperature values. The percentage decreased to 11 per cent in 2001-2010. 

With regard to greenhouse gases, global average concentrations of carbon dioxide in the atmosphere rose to 389 parts per million in 2010, methane to 1,808 parts per billion and nitrous oxide to 323.2 parts per billion. Since the start of industrial era in 1750, this is an increase of 39 per cent, 158 per cent and 20 per cent respectively.

 

Subscribe to Weekly Newsletter :

Related Interview:

‘Ganga basin temperatures to rise by 1-2°C by 2050’

Related Story:

Future shock

2010: hottest year in India till date

2001-2010: Warmest decade on record

57 people die as heat wave sweeps Andhra Pradesh

Heat wave claims over 600 lives

North-west India may face frequent droughts: World Bank

Rains in Uttarakhand extreme weather event: scientists

We are a voice to you; you have been a support to us. Together we build journalism that is independent, credible and fearless. You can further help us by making a donation. This will mean a lot for our ability to bring you news, perspectives and analysis from the ground so that we can make change together.

Comments are moderated and will be published only after the site moderator’s approval. Please use a genuine email ID and provide your name. Selected comments may also be used in the ‘Letters’ section of the Down To Earth print edition.

  • Here the report is based on

    Here the report is based on changes over referred period in 2001 to 2010. If we want known the real situation -- the report should have presented the entire curve starting from 1880. Then the real picture comes out. During 1998 to 2011, the curve fitting show a pattern a convex type with little change from the previous part. As we know the data show stepwise increase since 1880, that is some increase and some flat years. The current 1998 to 2011 comes under flat pattern. I presented a linear fit and superposed on it a 60-year cycle with -0.3 to +0.3. Unfortunately WMO in 1966 presented a manual on climate change but not using the same while explaining the data. This they should have done it. This year throughout the season I monitored the temperature pattern in Hyderabad and AP. They haven't crossed the 1931-60 normal values presented in IMD Red Book for each month. Tgese extremes were associated with Western Disturbances -- a normal practice. Never believe studies based on truncated data sets!!! However, in urban areas with increased unplanned urbanization and pollution heat island effect is clearly seed. In cities this is felt. In rural areas, people changed their food habits and destroyed greenery & water bodies around their dwellings, generally feel more heat. So also the case under deforestation, mining, industrial belts, etc. These are part of ecological changes that affect local & regional areas and nothing to do global warming phenomenon. Let us not take it granted, when some body outside India presents such reports.

    Dr. S. Jeevananda Reddy

    Posted by: Anonymous | 6 years ago | Reply