Trends For The Temperature Indices Of The Selected Aezs?

An example of a catastrophic climate change is a period known as the “Younger Dryas,” an epoch in time when the mean global surface temperature dropped drastically in a couple of decades and lasted for one millennium. Although the circumstance of the Younger Dryas is quite different compared to the present, it shows how cataclysmic a drastic climate change could enforce. Two important or major definitions presented in the work are mean global surface temperature and (global) climate. Mean global surface temperature is defined as “average of the air temperature measured at the land surface and of the surface water temperature measured over large bodies of water” (Jordan, 2006, p. 159). As for global climate, according to Jordan (2006), “the average of the global weather…over a time interval appropriate to the rate at which the climate is changing” is the best definition. These two terms appear frequently throughout, which shows the significance of comprehending the meaning as it relates to the argument and explanation.

What is the overall tend observed in global temperatures over the past thirty years or so? What is the projected trend over the next few decades (if

There is a positive correlation as the year increases so does the temperature anomaly. Satellites are useful as they measure the radiances in wavelength bands, which are then mathematically inverted to form indirect readings of temperature.

Climate change data was collected from the IPPC AR4 General Circulation Model (GCM). The GCM is regionally dependent and shows the different mixes of greenhouse gas concentration in the atmosphere. (Sheffield & Wood, 2007, p.81) The simple mutlicalar drought index (SPEI) is used to show the climatic water balance. Monthly or weekly difference physiologically equivalent temperature (PET) and precipitation and is calculated at different times. (Vicente-Serrano, Beguería, & López-Moreno, 2009, p. 1699) Streamflow data was obtained from the U.S. Geological Survey Hydrological Climate Date Network (HCDN). (Regonda, Rajagopalan, Clark, & Pitlick, 2004, p.374) Snowfall data is gathered from surveys that were performed by the Natural Resources Conservation Service and precipitation data was gathered from the National Weather Service Cooperative Network. (Regonda, Rajagopalan, Clark, & Pitlick, 2004, p.375)

The first argument examined on the man-made global warning side is that increasing greenhouse gases caused by human activities is causing directly observed climate changes. The first resulting climate change discussed is warming global surface temperature. There has been an increase in global surface temperature of 0.74 degrees C since the late 19th century. In the last 50 years alone the temperature has increased by 0.13 degrees C per decade. North America and Eurasia have seen the largest increase in warmth. However, some areas of the earth have actually cooled some this past century (Easterling & Karl, 2011, para6). After the mid 20th century 70% of the global land mass saw reduced diurnal temperatures. From 1979 to 2005 the maximum and minimum temperatures have shown no change; both indicate warming (Easterling & Karl, 2011, para10). Furthermore, borehole temperatures, snow cover, and glacier recession data all seem to agree with recent warming (Easterling & Karl, 2011, para11).

It has been observed through various researches that in the last century, average temperatures across the globe increased by over 1.3°F with an increase of more than two times in the Arctic. (Bates, Kundzewicz, Wu, & Palutikof, June 2008). The results of climate change can also be seen in changing precipitation patterns, increases in ocean temperatures, changes in the sea level, and acidity and melting of glaciers and sea ice (USEPA, 2014).

could have improved in this extended abstract. On several occasions, they used abbreviations without definitions. Some of these included “AMS”, “AUG”, “NCDC” and “NWS”. Though these abbreviations would have been common knowledge in the meteorology community, they should have still been defined with their first use. Another off-putting tendency was that the authors referred to Changnon by his first name, which was especially strange since they later referred to him by his last name. Furthermore, there were what appeared to be a few typographical errors in the abstract. For example, in Figures 4, 6, and 7, the nautical mile unit is abbreviated as “nim” instead of “nmi”. Additionally, the tense was not constant in the first paragraph. These changes would have been relative easy for the authors to

The graph visually represents the various temperature anomaly changes between 1880 and 2005. Temperature anomaly, quite simply, is the deviation from the average temperature for the region over a period of time. It can be either positive or negative, and this data undeniably supports the fact that climate change is very real. In the late nineteenth century, the majority of the temperature anomalies were negative. Unfortunately, Earth has not seen a negative temperature anomaly since 1982. At the end of the twentieth century and the beginning of the twenty first, the anomalies were overwhelmingly positive. Visually, the data points create a shape that curves upwards as it progresses. This visual is strengthened by the addition of a regression

Extreme climate change is crucial to understand and prominently discovering resolutions is essential to better our environment. This is calculated by the reading of satellites and several other forms of measurements. The two different remarks made from the 19th century and the 1950s era, concluded the various prolonged transformations on the ocean, air and terrestrial surface. It has been proven over the years the warming of the surface has occurred, nonetheless the whole earth had experienced this warming. The last thirty years has been the warmest time era in comparison to the last fourteen hundred years. It has been noticed not only the warming of the surface of the land but also the decline of snow, upsurge of sea altitudes and gas concentration.

“Arid and semi-arid environments, which represent a substantial portion of Earth's surface, have remained poorly studied. Yet water scarcity and salt content, changes in rainfall, flash floods, high rates of aquifer exploitation and growth of desert regions are all signs that suggest climate change and human activities are also affecting these arid and semi-arid zones” (Buis).

According to Penn State University researcher Michael Mann “ the average global temperature was relatively unchanging in pre-industrial times but sky-rocketed since 1900, and will increase by several degrees more over the next 100 years. There is no convincing empirical evidence that past climate was unchanging, nor that 20th century changes in average global temperature were unusual or unnatural”.

With reference to other findings, possible reasons for large-scale T estimates to be lower than small-scale estimates may be due to the limitation inherent in the RORA method within the valley, seasonality and scale of measurements, and improper quality of

The global climate has increased by approximately 0.6°C over the last 100 years (Walther et al. 2002). This increased rate of changes is largely due to humans: the industrial revolution, the advancement of technology and burning of fossil fuels (Timmermann et al. 1999). This human involvement has gradually changed the natural order of the environment and many of its processes. Some of these environmental conditions are not easily predictable, as these climatic changes are also increasing more extreme weather events such as: droughts in the savannah country, floods in low lying areas and an increase in intensity of cyclonic events (Knutson et al. 2010).

Monsoon season has led to changes in temperature worldwide. As an example, the seasonal temperature anomalies from June–July–August (Northern Hemisphere summer, Southern Hemisphere winter). The surface temperature anomalies relative to the base period from 1951 to 1980 are shown in Figure 1 for mid-decade years of the 1950s, 1960s, and 1970s, and for the past six years. Most regions in recent years are warmer than during 1951 to 1980. However, some areas are cooler than the 1051 to 1980 mean occur every year. For example, the United States was unusually cool in the summer of 2009. Research shows that global warming since 1951 to 1980 is about 0.5-0.6⁰C (about 1⁰F). Even though this seems small compared to weather fluctuations. This level of

The report concludes, again with “high confidence”, that anthropogenic (human caused) warming has had a discernible influence on many of our planets physical and biological systems. While there are limitations and gaps in the knowledge available, particularly from undeveloped countries, the knowledge available allowed the group to attribute most of the observed increase in the globally averaged temperature since the mid-20th century to the observed increase in anthropogenic greenhouse gas concentrations. The analysis was necessarily limited in the number of systems and locations considered. In addition, natural temperature variability is larger at the regional than at the global scale, thus affecting identification of changes due to external forcing and at the regional scale other factors such as land-use change and pollution, are an environmental