Just Released! Order “Waking Up to Climate Change” by George Ropes, and receive 25% Discount. Learn More

Search
Close this search box.
Search
Close this search box.

HOME          CATEGORIES          OUR TAKE

Increasing Trend of Hot Temperature Anomalies by City Tech Blogger Jiehao Huang

This study uses the daily summary data from NOAA’s Integrated Surface Database (ISD) (Smith et al. 2011). We focused on station-based temperature observations from 1979 to 2014 of three airports in the New York City area: John F. Kennedy (JFK), LaGuardia (LGA) and Newark (EWR).

Daily anomaly threshold is defined as two standard deviations away from the daily mean. In this case, the threshold changes daily, which aims to describe more day-to-day variability and details of the weather. The daily anomaly threshold indicates if the strength of the daily maximum is changing over time. Anomalies can also be classified as the weird events or outliers. The magnitude of the temperature anomalies is the greatest temperature in both the positive and negative direction during winter [Fig. 1].

This graph describes both the positive and negative magnitudes of temperature anomalies away from the mean, assuming mean is 0. The Black lines are the thresholds for each of the three different sites.)

In the order words, temperatures tend to deviate most from the mean in winter compared to summer. This plot shows temperatures change from  overall maximal are stronger in the winter. In addition, we further analyzed the frequency of these temperature anomalies monthly and yearly [Fig.2a – Fig3c].

                                                 Fig.2c  

(Bar graphs to show annual frequency of daily temperature anomalies in New York City for each site.)

 

 

Fig. 3a                                     Fig.3b                                Fig.3c

The annual frequency plot shows an increasing trend of hot temperature anomalies, while a decreasing trend for cold temperature anomalies occurred in past 36 years. These plots are related to the climate change and address the issues of global warming. Overall, we observed an increase in the frequency of anomalous daily precipitation and temperature events over the last 36 years (precipitation part are not shown).

Comment on this article

ClimateYou moderates comments to facilitate an informed, substantive, civil conversation. Abusive, profane, self-promotional, misleading, incoherent or off-topic comments will be rejected. Moderators are staffed during regular business hours (New York time) and can only accept comments written in English.

Leave a Reply

Your email address will not be published. Required fields are marked *


The reCAPTCHA verification period has expired. Please reload the page.

SHARE THIS ARTICLE


More Posts Like This

CITY TECH BLOG

Carbon Capture and Storage (CCS): A Crucial Technology for Mitigating Climate Change

Climate change is one of the most pressing challenges of our time, requiring urgent action to mitigate its impacts. Among the array of solutions, carbon capture and storage (CCS) stands out as a crucial technology for reducing greenhouse gas emissions and combating climate change. This essay explores the

CITY TECH BLOG

Adapting to Heat Waves & Climate Change

Heat waves – once sporadic events – are becoming more frequent, intense, and prolonged due to climate change. These periods of excessively hot weather bring about a myriad of impacts on both the environment and human society. One of the most direct impacts of heat waves is on

CITY TECH BLOG

How Climate Change is Changing My Home City

As a person living in a coastal city, more specifically New York City, my area of living is a prime target for climate change occurrences. From rising sea levels and temperatures to structures being damaged or completely destroyed, a lot will change and has changed in my home,