Understanding Winter in 2019: Dates, Definitions, and Climate Impacts

As we approach the winter solstice on December 21, 2019, it is important to understand the various definitions and dates of winter. This article will explore the differing definitions of winter, the recent climate impacts, and how these definitions affect our understanding of seasonal changes.

The Start of Winter in 2019

Winter in Maryland and much of the northern United States officially begins on December 21, 2019, marking the winter solstice. However, this date does not always align with the first signs of winter weather. For example, in Maryland, winter is more accurately defined as the time when snow occurs, rather than the calendar date. Nevertheless, the winter solstice is a significant event in the astronomical calendar, marking the shortest day of the year.

Multiple Definitions of Winter

There are several ways to define winter, each with its own characteristics and purposes. Let's explore these definitions:

Meteorological Winter vs. Calendar Winter vs. Solar Winter

Meteorological Winter: This is a period defined by fixed dates, spanning from December 1 to February 29. Meteorologists use this definition because it aligns with the average temperature trends throughout the year. For example, in 2019, meteorological winter began on December 1st and lasted until February 29th.

Calendar Winter: This definition is based on the calendar and traditionally includes December, January, and February. It is the most commonly used definition in official records and historical data.

Solar Winter: This is a period defined by the alignment of the Earth with the Sun. Solar winter typically spans from November 6 to February 5, depending on the specific year.

Global Warming and Winter Weather

While winter is officially defined by cold temperatures and potentially snowy conditions, the recent years have seen significant changes due to global warming. In 2019, many parts of the USA experienced record cold and record snowfall, challenging people's perceptions of winter. Despite these extreme weather events, global warming is still influencing the climate and causing changes in temperature patterns.

A notable example is the widespread snow cover across much of the USA in the early days of 2020, which raised questions about how climate change proponents would interpret these weather patterns. The idea that snowfall is a sign of global warming is a complex one, as it requires a nuanced understanding of the impact of climate change on different regions and seasons.

Changing Perspectives on Winter

The traditional perception of winter in many regions has shifted due to global warming. Recent years have seen colder than usual temperatures and significant snowfall, particularly in the northern states. This led some to suggest that winter should be declared earlier, perhaps as early as November 1st, to account for the bone-chilling cold conditions that preceded the official start.

However, the shift from traditional definitions to more climate-conscious interpretations is complex. It involves aligning scientific data with real-world observations and understanding the broader implications of climate change on weather patterns.

Conclusion

The start of winter in 2019 is a testament to the ongoing conversation about climate change and its impact on our planet. Understanding the different definitions of winter helps us appreciate the complexity of seasonal changes and the role of global warming in altering these patterns. As winter approaches, it is crucial to continue monitoring and analyzing these changes to better prepare for the future.