Surface temperature differences in turn cause pressure differences. A hot surface heats the air above it and the air expands, lowering the air pressure and its density. The resulting horizontal pressure gradient accelerates the air from high to low pressure, creating wind, and Earth's rotation then causes curvature of the flow via the Coriolis effect. The simple systems thus formed can then display emergent behaviour to produce more complex systems and thus other weather phenomena. Large scale examples include the Hadley cell while a smaller scale example would be coastal breezes.
Summers are warmer than winters in the Northern Hemisphere due to the tilt of the earth. During this time, the earth is tilted towards the sun and the Northern Hemisphere is getting more direct sunlight.
Using the Xiuhpohualli calendar, the Aztecs had certain farming seasons to know what was the best times of year to farm certain crops. These seasons were named xopan (“green time of year"), tonallan (“time of heat”), tonalco (“during the heat”) & cecuizpan (“time of cold”). The main crops planted were maize, squash and beans, and were planted in the wet seasons.
has a broad range of meaning, and may indicate storms just about anywhere in the world.
Bolivia has two main seasons, the windy season, and the winter/fall season. It is winter/fall because there really isn’t a winter in Bolivia, the trees and grass just kind of grow weaker for a short time. The Amazons area has many storms that usually can start fires due to lightning strikes. The summer also is called the windy season because it is unusually windy in this season which allows seeds from plants to spread. It usually floods
Evidence (ethnohistoric data, temperatures in Europe and the rainfall in Yucatan correlation, etc.) of a heavy drought period could have also caused the
Cinco de mayo is spanish for the fifth of may it marks a very special holiday. Cinco de mayo
Throughout the book Curanderismo: Mexican American Folk Healing Trorrer and Chavira make mention of el Niño Fidencio in countless areas of the book. It is mentioned that one of the most important spiritualist movement is based on “the life teaching, and the spirit of a famous young folk healer (now dead) from northern Mexico el Niño Fidencio” (1997:35). Even today el Niño is an important figure in many aspects of the belief system and practice associated with the Curanderismo folk healing. History plays a major role in culture when it comes to establishing religion and medical practices, which in the case of the Mexican Curanderos many times martyrs or perhaps people with supernatural or mythical
Milankovitch cycles are caused by changes in Earth’s orbit, Earth’s tilt, and the wobble of Earth’s axis. The Milankovitch cycles change the amount of solar forcing in our climate system, causing temperatures
It is important to understand the various cycles our atmosphere goes through due to how they affect our daily lives. The ENSO Cycle has a large impact globally and locally in California as we have seen with the long-term drought Southern California is currently in. The ENSO cycle can be defined by sea surface temperature (SST) anomaly in the Pacific Equatorial Area known as Nino 3.4 region (5oN-5oS, 120o-170oW). Unusually cooler waters (-.5 degrees centigrade) occurring for three consecutive months outlines a La Niña. La Niña’s bring wetter weather to Australia and Indonesia but often leaves the Eastern Pacific dry. Unlike La Niña’s, unusually warm water (+.5 degrees centigrade above average) occurring for 3 consecutive month’s outlines an
The Aztec calendar consisted consisted of two aspects that when combined worked towards the 52 year cycle, which in our time is equal to a century. The first aspect was a 260 day cycle meant for counting days while the second was a 365 day cycle that was for counting years, they worked together like two wheels. The 260 day cycle is used for divination and forms an almanac which is made up of 20 groups of days with names or numbers. After going through the full 260 day cycle the calendar would be reset. The numbered and named days would also be replaced with a new combination. Each combination had their own meaning which is why the 260 day aspect was used for divination and acted as an almanac. The 365 day cycle was used for the cycle of seasonal festivals and was divided up into 18 months consisted of 20 days of the 260 day cycle. Every 365 day cycle was given a name with it’s own meaning. Depending on the combination the festivals could be directed towards a multitude of things. As said by Richard F. Townsend “As mentioned above, there was an annual cycle of 18 festivals associated with the eighteen veintena “months” of the 365-day solar year. These festivals were basically of three types: those directed to mountains and water in order to ensure rain; those directed to the earth, the sun, and maize, to ensure fertility, those directed to special deities, particularly those identified as patrons of different community groups or of the community as a whole.” (The AZTECS,
Many think the Mayan calendars solely predicted the end of the world. However, there are many other things to learn about the Mayan calendars. The Mayans of Guatemala were educated people that had many different dating systems. They used glyphs and the sky to help them tell time. Although one common interest is the long count calendar, which predicted the 2012 hysteria, the Tzolkin and Haab calendar worked together to create the Calendar Round. The Mayans also used the sky to give them the Lunar Series, and this also gave them another way to tell time. Overall, the Mayan culture uses many different types of dating systems, including the Calendar Round, the Long Count Calendar, and the Lunar Series to help them tell time. These calendars gave
The Medieval Warm period was a time of warm temperature in the North Atlantic that that began around 950 AD and has also been proven to show that other climate related circumstances may have been involved with this event. The Little Ice Age was a period of cool climate following the Medieval Warm Period. Global Warming has affected many different aspects of the environment including the increased ocean temperature, coral reef bleaching, the rising of sea level, increased droughts, and the melting of ice endangering the lives of polar bears. Increased ocean temperature has numerous shocking consequences including rise in sea level which can end up deluging coastal habitats, eroding of the shoreline, and causing stronger storms. Because warm water can change to vapor more quickly, causing what started as a small storm to turn into one much more powerful and can create storms such as hurricanes and tsunamis. As Dan Murphy stated in his article entitled “Is Global Warming Generating Storms like Typhoon Haiyan” that the analysis does not indicate significant long-period global or individual basin trends in the frequency or intensity of landfalling (tropical cyclones) of minor or major hurricane strength. Warmer oceans have also been found to spread diseases between marine life more easily and have been known to cause ice to melt leading to the collapsing of polar ice shelves.
Throughout history climates have drastically changed. There have been shifts from warm climates to the Ice Ages (Cunningham & Cunningham, 2009, p.204). Evidence suggests there have been at least a dozen abrupt climate changes throughout the history of the earth. There are a few suspected reasons for these past climate changes. One reason may be that asteroids hitting the earth and volcanic eruptions caused some of them. A further assumption is that 22-year solar magnetic cycles and 11-year sunspot cycles played a part in the changes. A further possibility is that a regular shifting in the angle of the moon orbiting earth causing changing tides and atmospheric circulation affects the global climate (Cunningham & Cunningham, 2009,
Scientists have discovered 'climate forcing’s ' influence variations in climate systems and based on the depth and period of such forcing’s the adjustments to climate may be in a shorter or longer earth cycle. Natural forcing’s like variations in earth 's orbit, solar variation, volcanic eruptions and motion of tectonic plates have influence on the Earth 's climate