demo_video_caption.vtt

WEBVTT

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Diverting droughts with data, designing a visualization tool to drive water

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conservation efforts across

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Massachusetts.

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Welcome to our demo video. So for our first tab of our website, we have the

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motivation followed by the data as well

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as the demo video which we will link

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after this, in addition to our final

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report. So let's start with our first

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visualization which is the

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Massachusetts region map. So

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specifically this region map will help

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us with

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the 1st and 2nd domain task that we will mention next. So
first you can

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see how you have a legend, with a

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 categorical color map, so representing the

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six distinct regions. So the purpose of

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this is to better allow users to

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understand which region they are coming

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from. So in essence, we can click on the

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different counties that we have marked

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here with markers and say you're from

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Worcester County, then you know you're

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part of the Central Region and you can

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keep that in mind as you filter for the

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next few visualizations. So next we have

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the line chart and scatter plot. So

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let's look at the scatter plot first. This

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helps to address the first task, which

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is determining relationship between

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rainfall values and drought levels among

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regions. So let's say we're interested

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in all three years as well as January,

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February, November, December, in addition

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to the first four regions. So once we

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select those, we can click the button to

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display the scatter plot. And in general

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you can, as a user, see there is a general

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positive correlation between drought

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severity and precipitation levels. So

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that helps to answer the first domain task.

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The second domain task is determining

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which regions tend to have more or less

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precipitation than other regions during

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one or multiple months across one or

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multiple years. So given this line chart,

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say we're interested in 2018 data,

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so this only shows data from one year

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across all 12 months. So it's pretty

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clear that Cape Cod and Islands seems to

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have the greatest precipitation, while

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Connecticut River has the lowest

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precipitation within the month of March

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and you can see that across, for instance

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July where the lowest is actually

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Cape Code while the highest is Connecticut

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River. So using this tool tip, it better

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allows you to understand comparisons

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within one month of one year and then

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say we want to compare across

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multiple years for a given month. So you

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can use a scatter plot and you can see

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how in general for Cape Cod and Islands

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they seem to have the greatest

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precipitation regardless of the year, so

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across all years. And you can test that

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out with all these other months. And

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then lastly we have the linked bar and

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scatter plot which helps to answer

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determining of a region whether they

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have a higher or lower SPI, whether

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that corresponds with a region having

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higher or lower annual precipitation

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totals. So say we are interested in 2018

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and we press submit and then from there say we click on this bar and

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 see that for Cape Cod and Islands the precipitation seems to

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be pretty low compared to the other

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regions, right? And you can see how

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there is five points to the left of the

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 X = 0 drought severity level and then

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say then we look at Central which has

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the highest annual precipitation and it

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only has like around 2 1/2 points to the right of the drought severity. So to some extent it does

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show that annual precipitation does correspond with SPI levels in the sense that greater annual precipitation leads to

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less drought severity as negative means

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stronger drought severity. However, that

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is to some extent, as for instance you

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can look at Northeast which has the

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lowest annual precipitation but only has

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around three points to the left,

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compared to Cape Cod and Islands which has

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actually five points to the left. And

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then lastly, we just have our

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acknowledgement page. Thank you for

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listening.