According to satellite data, changes in vegetation index were most 
pronounced from 2015 to 2020, which was related to changes in 
temperature. In other words, global warming speeds up the beginning of 
spring.

From March 24 to March 29, 2023, we experienced that the cherry 
blossom season at school came five days earlier than last year. This means 
that spring comes earlier than the past. Then we started wondering 
whether the flowering season was different from the past. Hence, we use 
NDVI to investigate how the flowering season changes and its relationship 
with climate change!

Conclusions

Hyoam High school

Team leader : Sangun Lee / kepler84@naver.com

Results

Introduction

To see how spring is changing, we calculate the NDVI that changes over 
time, We decided to check the following NDVI.

We analyzed the change trend of NDVI by analyzing a total of six 

periods from 2005, 2010, 2015, 2020, and 2023 in Gyeongsangnam-do 

and hanbando where we currently live in.

Study Area

*Satellite used : Modis-Terra, Sentinel-2 
*Progress :
1. Select the region and time to calculate the NDVI
2. Observe the changing temperature of the times
3. Analyze the correlation between climate change and NDVI
*Using Temperature sum : Sum of the average daily temperature for 
the start of flowering

Methods

In memory of Devorah Blumberg

SHE SPACE *South Korea*TEAM: Daeun Kim, Taegyeong Kim, 

Yelan lee, Nakyeoung kim, jiin Lee, Gaeun Jo, 
Yuhyun Oh, Sieon Kim

Your 

Institutional 

Logo here

The most obvious change in satellite data we investigated was 
between 2015 and 2020.
Comparing the same day every year, the NDVI index seen on 
the satellite darkens as vegetation grows faster.
As a result of comparing the sum of temperatures of cherry 
blossoms between 2015 and 2020, there was a difference of 
43.7 degrees on March 25th and 29.6 degrees on April 5.
In 2020, it

’s  already filled the sum of temperature needed for 

cherry blossoms

’s flowering on the 87th with Julian dating, and 

on the 56th with Julian dating, it

’s already filled the sum of 

temperature needed for forsythia

’s flowering. On the other hand, 

in 2015, the sum of temperature is far less than in 2020.