METEO 3 Lesson 10 Images

Lesson 10: The Human Impact on Weather and Climate

 

Local Human Impacts

They're cities

Satellite map highlighting Minneapolis, St. Cloud, Mankato, and Rochester with temperature variations indicated by grayscale shading..
They're cities
Text description of They're cities image.

The image is a satellite view of a region highlighting several cities with labeled yellow text and circles. The map displays a cloudy texture in grayscale, indicating varying temperatures. Darker areas, marked as warmer, are scattered across the image. Major cities like Minneapolis, St. Cloud, Mankato, and Rochester are identified with yellow text and encircled. The cities are placed on a lightly outlined map of the area to provide geographical context..

Credit: CREDIT_HERE

example from 18Z on October 2, 2017

Satellite image of northeastern U.S. highlighting Lakes Ontario, Erie, Finger Lakes, Northern Forests, valley regions, Susquehanna River, and clouds.
example from 18Z on October 2, 2017
Text description of the example from 18Z on October 2, 2017 image.

The image is a satellite view showing parts of the northeastern United States, bordered by the Atlantic Ocean to the east. State boundaries are outlined in blue, highlighting the area from Lake Ontario and Lake Erie in the north and west, to the Atlantic Ocean in the east. The Finger Lakes and the Northern Forests are marked in the northern central area. Valley regions, identified as agricultural, are located south of the forests. The Susquehanna River runs across the southern section. There are patches of clouds visible over the southwest area near the Susquehanna River. Labels with yellow text identify key geographical features.

Credit: CREDIT_HERE

full-sized image

A satellite view of the northeastern United States with geographical features labeled.
full-sized image
Text description of the full-sized image image.

The image is a satellite view showing a portion of the northeastern United States, with state borders outlined in yellow. Prominent geographical features are labeled with yellow text, such as “Clouds” in the northwest, “Northern forests” toward the north-central area, and “Snow-covered valleys” in the central region. An “Ice-covered Susquehanna River” is labeled in the southeastern section of the image. The landscape shows various textures and shading indicating different terrain types and weather conditions, with some areas appearing darker due to forest cover or cloud shadows. The top left corner contains text referencing NOAA/NESDIS Satellite Applications and Research.

Credit: CREDIT_HERE

 

Natural Drivers of Climate Change

NASA graph of sunspot number during Solar Cycles 22-24

A graph of sunspot numbers from 1985 to 2020 over a solar image, showing solar cycles 22, 23, and 24.
NASA graph of sunspot number during Solar Cycles 22-24
Text description of the NASA graph of sunspot number during Solar Cycles 22-24 image.

The image is a graph overlaid on a vivid orange and yellow solar image, showing sunspot numbers from 1985 to 2020. The x-axis represents time, marked with intervals for every five years from 1985 to 2020. The y-axis indicates sunspot numbers ranging from 0 to 300. Three distinct solar cycles are shown: Cycle 22 (1985-1996), Cycle 23 (1996-2008), and Cycle 24 (2008-2020). White lines illustrate the actual recorded sunspot numbers, with peaks and troughs visible across each cycle. Dotted lines represent predictions for Sunspot Cycle 24. The background features a detailed image of the sun, showcasing bright spots and swirling patterns, enhancing the dynamic nature of solar activity. The image is labeled with text indicating the title, data source, and time of prediction.

Credit: NASA

varies between 22.1 degrees and 24.5 degrees

Illustration of axial obliquity variation showing angles of 22.1 and 24.5 degrees.
varies between 22.1 degrees and 24.5 degrees
Text description of the varies between 22.1 degrees and 24.5 degrees image.

The image illustrates the concept of axial obliquity variation. It features a dark, partially illuminated sphere resembling a planet, set against a black background. Two red lines originate from a point on the sphere's surface, diverging upward, symbolizing different axial tilt angles. The angles between these lines and a vertical white line are marked with two white arrows. One arrow indicates an angle of 22.1 degrees, and the other indicates 24.5 degrees. The sphere is partially in shadow, suggesting rotation or illumination from an off-screen light source.

Credit: NASA GSFC

precession

Image of Earth illustrating precession with arrows indicating Earth's rotation and a circular path at the North Pole.
precession
Text description of the precession image.

The image depicts a visualization of Earth in space demonstrating the concept of precession. The planet is shown as a globe, with a dark line dividing the illuminated side from the shadowed side, indicating day and night. Over the surface, a grid with dotted lines outlines the latitude and longitude. A red arrow extends upward from the North Pole, topped with a circular orbit path, suggesting the rotational path of the precession. White arrows along the equator indicate the direction of Earth's rotation. The backdrop is a starry space, providing a cosmic context. In the top left corner, the word "Precession" is written in white text.

Credit: NASA GSFC

that's not what has actually happened

Line graph showing global temperature anomalies from 1880 to 2020, illustrating an upward trend.
that's not what has actually happened
Text description of the that's not what has actually happened image.

The image is a line graph displaying the global temperature anomaly from 1880 to 2020. The y-axis, labeled "Temperature Anomaly (C)," ranges from -0.5 to 1.0, while the x-axis is labeled "YEAR" and ranges from 1880 to 2020. The data is represented by a thick black line that moves upwards over the years, indicating an increase in temperature anomalies. There are lighter gray dots and lines in the background, which likely indicate more granular data points or yearly variations. The graph shows a rising trend, particularly from the 1980s onward. A source citation at the bottom left reads "Source: climate.nasa.gov."

Credit: CREDIT_HERE

 

Anthropogenic Climate Change

observed temperature changes that have occurred since the late 1800s

Line graph showing global temperature anomalies from 1880 to 2020, illustrating an upward trend.
observed temperature changes that have occurred since the late 1800s
Text description of the observed temperature changes that have occurred since the late 1800s image.

The image is a line graph displaying the global temperature anomaly from 1880 to 2020. The y-axis, labeled "Temperature Anomaly (C)," ranges from -0.5 to 1.0, while the x-axis is labeled "YEAR" and ranges from 1880 to 2020. The data is represented by a thick black line that moves upwards over the years, indicating an increase in temperature anomalies. There are lighter gray dots and lines in the background, which likely indicate more granular data points or yearly variations. The graph shows a rising trend, particularly from the 1980s onward. A source citation at the bottom left reads "Source: climate.nasa.gov."

Credit: CREDIT_HERE

global carbon dioxide emissions have grown

Graph showing global carbon emissions from fossil fuels, 1900-2014, with an increasing trend.
global carbon dioxide emissions have grown
Text description of the global carbon dioxide emissions have grown image.

The image is a line graph depicting global carbon emissions from fossil fuels between 1900 and 2014. The graph's vertical axis represents "Million Metric Tons Carbon," ranging from 0 to 11,000. The horizontal axis features years, marked at intervals from 1900 to 2010. The blue line signifies an upward trend, starting near 500 million metric tons in 1900 and climbing to over 10,000 million metric tons by 2014. The increase is gradual until around 1950, after which it becomes steeper, indicating accelerated emissions growth. The background is white with green shading at the top, containing the graph's title.

Credit: U.S. Department of Energy

 

The Carbon Cycle

data from the Mauna Loa Observatory

Graph of atmospheric CO2 levels at Mauna Loa Observatory from 1960 to 2020, showing a consistent increase.
data from the Mauna Loa Observatory
Text description of the data from the Mauna Loa Observatory image.

The image is a graph showing the increase in atmospheric CO2 levels measured at Mauna Loa Observatory from 1960 to 2020. The y-axis represents CO2 levels in parts per million, ranging from 320 to 420. The x-axis represents the years, marked at each decade from 1960 to 2020. The graph features a red jagged line indicating the annual fluctuation and long-term upward trend in CO2 levels. Two logos are present in the bottom right corner. The title "Atmospheric CO2 at Mauna Loa Observatory" is placed at the top. Additional text near the top left credits Scripps Institution of Oceanography and NOAA Earth System Research Laboratory.

Credit: Scripps Institution of Oceanography and NOAA Earth System Research Laboratory

concentrations of atmospheric carbon dioxide have varied

Line graph of atmospheric CO2 levels over 400,000 years with a recent sharp increase.
concentrations of atmospheric carbon dioxide have varied
Text description of the concentrations of atmospheric carbon dioxide have varied image.

The image is a line graph depicting atmospheric carbon dioxide levels (parts per million) over time, from 400,000 years ago to the present day, with 0 years representing 1950. The x-axis is labeled "years before today (0 = 1950)" and the y-axis is labeled "carbon dioxide level (parts per million)" ranging from 180 to 500. The graph shows fluctuating CO2 levels between 180 and 300 ppm across most of the timescale, with a dramatic spike after 0 years, surpassing previous levels and reaching upwards of 400 ppm. A horizontal yellow line across the graph marks 300 ppm, indicating a previous atmospheric CO2 limit. The lines labeled "current level" and "1950 level" denote the recent increases.

Credit: CREDIT_HERE

warming trend since the late 1800s

Graph showing the global temperature anomaly from 1880 to 2020, with a noticeable rise after 1980.
warming trend since the late 1800s
Text description of the warming trend since the late 1800s image.

The image is a line graph illustrating the global temperature anomaly from 1880 to around 2020. The x-axis represents the year, ranging from 1880 to 2020, while the y-axis shows temperature anomaly in degrees Celsius, ranging from -0.5 to 1.0. The graph displays a fluctuating but overall rising trend. Starting from the late 19th century, the line varies slightly up and down but shows a clear increase over time, particularly pronounced from around 1980 onward. The data points are depicted with small gray circles, and a thick black line smooths out the yearly fluctuations, highlighting the upward trend. The graph includes a grid layout for better visualization.

Credit: CREDIT_HERE

 

Taking Earth's Temperature

graph of 133-month average global temperatures

Line graph of global temperature anomalies from 1880 to 2010 by several sources, showing an overall rising trend.
graph of 133-month average global temperatures
Text description of the graph of 133-month average global temperatures image.

The image is a line graph showing various measurements of global temperature anomalies over time, from the year 1880 to 2010. The x-axis represents the year, starting from 1880 to 2010, while the y-axis represents the temperature anomaly in degrees Celsius, ranging from -0.8 to 0.1. There are five different colored lines on the graph, each representing data from different sources: GISS (light blue), HADCRUT (purple), NOAA (green), RSS (orange), and UAH (red). The data shows an overall upward trend in temperature anomalies over time, with fluctuations along different years. All lines converge around a similar upward trajectory starting in the latter part of the 20th century. The graph is titled "Various Measurements of Global Temperature," and it includes a note that it represents a 133-month average.

Credit: CREDIT_HERE

NASA's temperature record

Line graph showing global temperature anomalies from 1880 to 2020 with a rising trend.
NASA's temperature record
Text description of the NASA's temperature record image.

The image is a line graph titled "Global Mean Estimates based on Land and Ocean Data." It displays temperature anomaly data from 1880 to 2020 on the x-axis and temperature anomaly in degrees Celsius from -0.6 to 1.0 on the y-axis. Two lines represent the data: the black line with square markers shows the annual mean, while a red line represents the LOWESS smoothing trend. There is a noticeable upward trend in temperature anomalies, particularly sharp after the 1980s. Error bars in blue appear at several data points. The source is noted as "NASA GISS" in the bottom right corner.

Credit: NASA

atmospheric carbon dioxide is steadily increasing

Graph showing rising atmospheric CO2 from 1960 to 2020 at Mauna Loa Observatory.
atmospheric carbon dioxide is steadily increasing
Text description of the atmospheric carbon dioxide is steadily increasing image.

The image is a graph displaying atmospheric CO2 levels at Mauna Loa Observatory from 1960 to 2020. The x-axis represents the year, marked at intervals from 1960 to 2020, while the y-axis shows CO2 concentration in parts per million, ranging from 320 to 420. A red jagged line illustrates a steady increase in CO2 levels over time, with minor seasonal fluctuations. Two circular logos are located in the bottom right corner, representing the Scripps Institution of Oceanography and NOAA Earth System Research Laboratory. The title at the top reads "Atmospheric CO2 at Mauna Loa Observatory."

Credit: CREDIT_HERE

no global warming had occurred for a period of 18 years and 3 months

Line graph illustrating temperature anomalies from 1997 to 2014 with no significant trend in global warming.
no global warming had occurred for a period of 18 years and 3 months
Text description of the no global warming had occurred for a period of 18 years and 3 months image.

The image is a line graph depicting global mean temperature changes from 1997 to 2014. The vertical axis represents temperature anomalies in degrees Celsius, ranging from -0.1 to 0.8, while the horizontal axis covers years from 1997 to 2014. The blue line zigzags, illustrating fluctuations in temperature anomalies. A bold horizontal blue line crosses the graph near the zero mark. The background is a grid with fine lines for easier reading of values. A prominent blue text in the center reads "No global warming for 18 years 3 months." Additional annotations show a trend value of 0.00°C and r² = 0.000, noting the change trend.

Credit: CREDIT_HERE
A U.S. map showing average mean temperature trends from 1895 to 2017 using a red and blue gradient to indicate changes.
temperature changes in the United States between 1895 and 2017
Text description of the temperature changes in the United States between 1895 and 2017 image.

The image is a map of the United States displaying average mean temperature trends from 1895 to 2017 with a 95% confidence interval. The map uses a color gradient to indicate changes in temperature, measured in degrees Fahrenheit per century. Cooler temperatures are shown in blue shades, while warmer temperatures are in red shades. Most of the map is in shades of red, indicating an increase in temperatures over time, with the darkest reds concentrated in the northern and western regions. A legend at the bottom provides a scale for interpreting the color gradient from -2.0 to 2.0 degrees Fahrenheit per century. The NOAA logo is present in the southeastern United States area.

Credit: CREDIT_HERE
Map of the U.S. showing summer temperature trends from 1895 to 2017, using a color gradient for warming and cooling.
maximum temperatures during summer
Text description of the maximum temperatures during summer image.

The image is a map of the United States illustrating average maximum temperature trends during the summers from 1895 to 2017, with a 95% confidence interval. The map uses a color gradient to represent temperature changes in degrees Fahrenheit per century. Warm colors, ranging from light peach to dark red, indicate areas with increasing temperatures, while cool colors, from light blue to dark blue, denote areas with decreasing temperatures. The western and northeastern regions predominantly show warmer trends, illustrated in various shades of red. In contrast, central areas display a trend of cooling, evident in blue tones. A color scale below the map provides reference for temperature changes from -2.0 to 2.0 degrees Fahrenheit per century. At the bottom is a note indicating the data source is the 5km Gridded Dataset (nClimGrid) and is prepared by the National Centers for Environmental Information. The NOAA logo appears on the southeastern portion of the map.

Credit: CREDIT_HERE

 

A Little Warming, Big Consequences

global average temperatures

Line graph of global mean temperature anomalies from 1880 to 2020, showing an upward trend.
global average temperatures
Text description of the global average temperatures image.

The image is a line graph titled “Global Mean Estimates based on Land and Ocean Data,” illustrating temperature anomalies from 1880 to 2020. The x-axis represents the years, ranging from 1880 to 2020, while the y-axis shows the temperature anomaly in degrees Celsius, spanning from -0.6 to 1.0. There are two lines on the graph: a black jagged line with square markers depicting the annual mean temperature anomaly and a smooth red line representing the Lowess smoothing. The graph shows a general upward trend in temperature anomalies, with fluctuations over time. In the bottom right corner, "NASA GISS" is labeled.

Credit: CREDIT_HERE

animation showing Arctic sea ice concentration between 1914 and 2013 (0:12)

animation showing Arctic sea ice concentration between 1914 and 2013
Text description of the animation showing Arctic sea ice concentration between 1914 and 2013 0:12)

The image shows a visual representation of Arctic sea ice extent in the year 1914. It features a predominantly white area indicating the ice, surrounded by gradient shades transitioning from light to dark blue, symbolizing decreasing ice concentration towards the edges. The background is a stark black, highlighting the contrast with the ice depiction. In the top left corner, the year "1914" is displayed in large, bold white text. At the bottom left, there is a smaller block of text in white providing data source information.

Credit: Zachary Labe

Greenland and Antarctica

World map highlighting Greenland and Antarctic Ice Sheets.
Greenland and Antarctica
Text description of the Greenland and Antarctica image.

The image is a world map in an equirectangular projection, shown in grayscale. Two rectangular areas are highlighted in red. The first rectangle outlines Greenland in the northern hemisphere, labeled "Greenland Ice Sheet" in red text. The second rectangle highlights Antarctica in the southern hemisphere, labeled "Antarctic Ice Sheet" in red text. The map outlines continental borders and island masses without any topographic detail or political boundaries.

Credit: NSIDC

trends in land-ice mass in these side-by-side graphs (0:06)

trends in land-ice mass in these side-by-side graphs
Text description of the animation showing trends in land-ice mass in these side-by-side graphs (0:06)

The image consists of two line graphs on a black background, depicting land ice loss in Antarctica and Greenland from 2002 to 2017. Both graphs show a downward trend, with data lines in cyan. The left graph for Antarctica shows fluctuations with a significant drop after 2011, marked with a magenta dot labeled "2017." The right graph for Greenland reveals a steeper and more consistent decline, also marked in 2017 with a similar magenta dot. Both graphs have vertical axes labeled in gigatonnes from 0 to -4000 at increments of 1000, and horizontal axes with years from 2002 to 2017. The titles at the bottom of each graph indicate "Antarctica" and "Greenland" in dark blue. Above both graphs, the words "LAND ICE" are displayed prominently in white. Additional text at the bottom provides data source, reference, and graphic creator information.

Credit: Zachary Labe

increasing sea levels began before 1993

Line graph showing sea level change in millimeters from 1870 to 1990, with an upward trend.
increasing sea levels began before 1993
Text description of the increasing sea levels began before 1993 image.

The image is a line graph illustrating sea level change in millimeters over a period from 1870 to 1990. The x-axis is labeled "YEAR" and spans from 1870 to 1990, marked at intervals of 10 years. The y-axis is labeled "Sea Level Change (mm)" and ranges from -50 to 250 millimeters, marked at intervals of 50 millimeters. A blue line represents the data, showing a general upward trend with fluctuations, indicating rising sea levels over time. The graph features a horizontal dashed line at the zero mark on the y-axis to indicate the starting point of measurement.

Credit: CREDIT_HERE

graphic from NOAA

A global map showing sea level trends with colored arrows.
graphic from NOAA
Text description of the graphic from NOAA image.

The image is a global map highlighting relative sea level trends with colorful arrows representing the direction and magnitude of change. The background features a world map with blue oceans and green continents. Arrows in different colors mark various locations across the globe: red, yellow, green, blue, and purple, signifying different rates of sea level changes. In North America and Europe, numerous arrows of varying colors indicate diverse trends. The Pacific Ocean hosts green and yellow arrows, mainly suggesting rising trends. Australia and Asia display a mix of colors, showing varying trends throughout the regions. At the bottom, a legend explains the color and direction of the arrows, with red indicating significant rises and blue indicating drops.

Credit: NOAA

 

Climate Change and Extreme Weather

eastern United States was extremely cold

Map showing February 2015 U.S. divisional temperature ranks; reds depict warmth in the west, blues indicate cold in the east.
eastern United States was extremely cold
Text description of the eastern United States was extremely cold image.

The image is a map of the contiguous United States depicting divisional average temperature ranks for February 2015. It uses a range of colors to signify temperature variations relative to historical averages from the period 1895-2015. The western states, including California, Nevada, and Arizona, are shown in shades of red, indicating much above average and record warmest temperatures. The central states display a mix of white and light blue colors, signaling near average to below average temperatures. The eastern states, including parts of Maine, Georgia, and the Carolinas, are in darker shades of blue, indicating much below average and record coldest temperatures. A legend at the bottom explains the color coding. The logo of the National Climatic Data Center is on the right side of the map, along with the date, March 4, 2015.

Credit: CREDIT_HERE

we examined evaporation rates and condensation rates in a closed chamber

Two containers show liquid evaporation and condensation, with heating on the right side.
we examined evaporation rates and condensation rates in a closed chamber
Text description of the we examined evaporation rates and condensation rates in a closed chamber image.

The image is a comparative illustration of two containers, side by side, depicting the effects of temperature on evaporation and condensation rates. Both containers are rectangular with a visible liquid layer at the bottom, shown in blue. The space above the liquid contains dispersed molecules, depicted as small clusters, indicating water molecules in the vapor phase.

In the left container, labeled with a blue downward arrow on the left stating "Condensation Rate," and a yellow upward arrow on the right saying "Evaporation Rate," the liquid and vapor are in equilibrium.

In the right container, the setup is similar but placed on a heating element illustrated by a gray platform with upward yellow and gray cones denoting increased temperature. The same labels for condensation and evaporation rates are present, showing that the evaporation rate has increased due to the heat source beneath.

Credit: CREDIT_HERE

corresponding graph from NOAA

Graph of percent of land area from 1910 to 2020, showing fluctuating trends with an increase in recent years.
corresponding graph from NOAA
Text description of the corresponding graph from NOAA image.

The image is a line and bar graph showing the percent of land area affected over time from 1910 to 2020. The x-axis represents the years, marked in increments of 10 from 1910 to 2020. The y-axis indicates the percent of land area, ranging from 0 to 25. Pale blue vertical bars represent annual data points, and an orange line overlays the bars to indicate trends over time. The graph shows fluctuations in land area percentage, with notable increases in more recent years.

Credit: NOAA

Breaking the United States down into regions

Map of the United States showing percentage changes in heavy precipitation by region, with a color scale indicating 0% to over 40% change.
Breaking the United States down into regions
Text description of the Breaking the United States down into regions image.

The image is a color-coded map of the United States showing observed changes in very heavy precipitation across different regions. Each state or region is shaded according to a gradient scale indicating the percentage change in precipitation. The color scale at the bottom ranges from tan, representing less than 0% change, to dark blue, indicating changes of 40% or more. Alaska shows an 11% increase, while Hawaii displays a -12% change, shown in tan. The western United States has lighter blue shades, indicating 5% in the Southwest and 12% in the Northwest. Further east, the Midwest shows a 16% change, while the Northern Great Plains is at 37%. The Southeast is marked with a 27% change, and the Northeast, the darkest blue, shows a 71% increase. Florida is at 33%.

Credit: National Climate Assessment, 2014

the number of weak tornadoes has increased dramatically

Line graph showing tornadoes by year from 1950 to 2016, categorized by intensity: Weak (orange), Strong (red), Violent (purple).
the number of weak tornadoes has increased dramatically
Text description of the the number of weak tornadoes has increased dramatically image.

The image is a line graph titled "Tornadoes by year since 1950," displaying the annual count of tornadoes in the United States from 1950 to 2016. There are three color-coded lines representing different tornado intensities on the Enhanced Fujita Scale: Weak (0-1) in orange, Strong (2-3) in red, and Violent (4-5) in purple. The y-axis shows the number of tornadoes ranging from 0 to 1,800, marked in increments of 200, while the x-axis displays years from 1950 to 2016. The orange line shows an increase in weak tornadoes, with fluctuations, peaking significantly around 2011. The red line indicates a lower and more consistent count of strong tornadoes. The purple line shows a relatively stable and low number of violent tornadoes. The graph has a dark gray background with grid lines for reference.

Credit: Ian Livingston / ustornadoes.com

the list of costliest weather disasters in the U.S from 1980 through 2017

A table listing hurricanes Katrina, Harvey, Maria, and Sandy with details on dates, summaries, costs, and deaths.
the list of costliest weather disasters in the U.S from 1980 through 2017
Text description of the the list of costliest weather disasters in the U.S from 1980 through 2017 image.

The image is a table detailing information about several notable hurricanes. It consists of five columns: Event, Begin Date, End Date, Summary, CPI-Adjusted Estimated Cost (In Billions), and Deaths. Four hurricanes are listed: Katrina, Harvey, Maria, and Sandy. Each row provides specific details about the hurricane, including the category, affected areas, and consequences.

EventBegin DateEnd DateSummaryCPI-Adjusted Estimated Cost (in Billions)Deaths
Hurricane Katrina
August 2005
2005-08-252005-08-30Category 3 hurricane initially impacts the U.S. as a Category 1 near Miami, FL, then as a strong Category 3 along the eastern LA-western MS coastlines, resulting in severe storm surge damage (maximum surge probably exceeded 30 feet) along the LA-MS-AL coasts, wind damage, and the failure of parts of the levee system in New Orleans. Inland effects included high winds and some flooding in the states of AL, MS, FL, TN, KY, IN, OH, and GA.$163.81,833
Hurricane Harvey
August 2017
2017-08-252017-08-31Category 4 hurricane made landfall near Rockport, Texas causing widespread damage. Harvey's devastation was most pronounced due to the large region of extreme rainfall producing historic flooding across Houston and surrounding areas. More than 30 inches of rainfall fell on 6.9 million people, while 1.25 million experienced over 45 inches and 11,000 had over 50 inches, based on 7-day rainfall totals ending August 31. This historic U.S. rainfall caused massive flooding that displaced over 30,000 people and damaged or destroyed over 200,000 homes and businesses.$126.389
Hurricane Maria
September 2017
2017-09-192017-09-21Category 4 hurricane made landfall in southeast Puerto Rico after striking the U.S. Virgin Island of St. Croix. Maria's high winds caused widespread devastation to Puerto Rico's transportation, agriculture, communication and energy infrastructure. Extreme rainfall of up to 37 inches produced widespread flooding and mudslides across the island. The interruption to commerce and standard living conditions will be sustained for a long period, as much of Puerto Rico's infrastructure is rebuilt. Maria tied Hurricane Wilma (2005) for the most rapid intensification strengthening from tropical depression to Category 5 storm in 54 hours. Maria's landfall at Category 4 strength gives the U.S. a record three Category 4+ landfalls this year (Maria, Harvey, and Irma). A reanalysis on the number of deaths due to Maria is being conducted and will be updated in the coming months.$90.965
Hurricane Sandy
October 2012
2012-10-302012-10-31Extensive damage across several northeastern states (MD, DE, NJ, NY, CT,MA,RI) due to high wind and coastal strm surg, particularly NY and NJ. Damage from wind, rain and heavy snow.$71.5159
Credit: NCEI

40-60 inches of rain

Color-coded map showing rainfall levels from 1 to 60.58 inches in Texas and surrounding areas, with the highest recorded in Nederland, TX.
40-60 inches of rain
Text description of the 40-60 inches of rain image.

The image is a weather map depicting rainfall levels in various regions, primarily focused on Texas and its surrounding states. It uses a color-coded system to indicate different ranges of rainfall measured in inches. The central area, around the Gulf Coast of Texas, features the highest measurements depicted in shades of bright green to yellow for rainfall between 30 to 60.58 inches. Surrounding areas in Texas and extending into neighboring states show varying levels of rainfall, with lighter colors like pink, blue, and purple representing lower rainfall amounts from 10 to 29.99 inches. Outermost regions in orange shades indicate the lowest range of 1 to 9.99 inches. A path titled "Track" is marked in black, suggesting the trajectory of a weather system. The map includes a legend on the right side listing the color-coded rainfall amounts, and a note at the bottom right corner states the location and maximum rainfall recorded: “Maximum: 60.58 inches, Nederland 1 SW, TX.”

Credit: CREDIT_HERE

 

Predicting the Misty, Distant Future

older climate model simulations

Graph of temperature anomalies from 1975 to 2017 with CMIP3 Ensemble and various datasets, showing a general upward trend.
older climate model simulations
Text description of the older climate model simulations image.

The image is a graph illustrating temperature anomalies from the years 1975 to 2017, using 1980-1999 as a reference point. The x-axis represents the years, divided into "Hindcast" (1975-2000) and "Forecast" (2000-2017). The y-axis shows the temperature anomaly. A black line represents the CMIP3 Ensemble mean along with a gray shaded area indicating the 95% range. Various colored lines plot different datasets: HadCRUT4 in blue, Cowtan & Way in orange, NOAA NCEI in light blue, and GISTEMP in red, with 2017 data estimated and highlighted in red. The lines mostly follow the same trend, rising over time within and above the gray area.

Credit: Gavin Schmidt

climate models predict sea-level increases

Graph showing historical sea level rise with projections from 1700 to 2100.
climate models predict sea-level increases
Text description of the climate models predict sea-level increases image.

The image is a line graph depicting sea level changes over time, spanning from the year 1700 to 2100. The x-axis represents the year, while the y-axis represents sea level in meters. The graph shows a historical trend of sea level rise, with data represented by a blue line with a shaded purple area indicating uncertainty until around 2000. Post-2000, the graph includes projections represented by two lines, one in red and one in blue, each with their respective shaded areas suggesting potential ranges of sea level increase. The red line shows a steeper increase compared to the blue line, indicating different projection scenarios.

Credit: Intergovernmental Panel on Climate Change

 

Case Study: Ozone Depletion