Some links on this page are affiliate links: if you buy through them we may earn a commission, at no extra cost to you.
A 2024 climate study found that three pronounced cold phases in a southern Italian sediment record overlapped with the Antonine Plague, the Plague of Cyprian and the Plague of Justinian. The dates make climate stress a plausible part of the historical picture—but they do not show that cold weather caused any of the outbreaks. The record comes from the Gulf of Taranto, not Rome, and reconstructs regional temperature and precipitation rather than measuring conditions in the city directly.
What did the climate study find?
The 2024 study in Science Advances reconstructed temperature and precipitation from marine sediments in the Gulf of Taranto, in southern Italy. Its record covers approximately 200 BCE to 600 CE and has approximately three-year resolution, according to the study authors. That makes it unusually detailed for this period, but it remains a climate-proxy reconstruction: the researchers infer past conditions from sediment evidence rather than reading them from instruments.
The study describes a broad transition away from a warmer, humid and relatively stable climate pattern. Its gradual end began around 100 CE and became more pronounced from around 130 CE. Later in the Roman imperial period, the record indicates greater environmental variability. Within that longer story, the authors identify cold phases around 160–180 CE, 245–275 CE and after 530 CE.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Scan for outdated or missing drivers - takes under a minute3Repair Windows errors before they cause bigger problemsThose intervals overlap with the conventional onset dates of three major outbreaks. The central finding is therefore a chronology: cold phases in a southern Italian climate record coincide in time with the Antonine Plague, the Plague of Cyprian and the Plague of Justinian. The study does not quantify a particular temperature drop in the evidence summarized here, nor does it estimate disease mortality.
Popular on Amazon
- 【90 Degree Full Function USB C Adapter】Supports the latest USB4 standard for up to 40Gbps of bandwidth, 8K video support, and up to 240W Fast charging; Support USB PD 3.1 Extended Power Range (EPR) including 140W, 180W and 240W. Your productivity is easily doubled. *Warm Tip: For the best fit, please make sure the USB-C port is fully exposed; thick or bulky cases may affect compatibility.
- 【Reliable Quality】Made from high-quality, scratch-resistant aluminum alloy, delicate metal frame. get excellent wear resistance and heat dissipation. Non-Slip Design for easier insertion and removal.
- 【Small and portable】Ultra thin size, ultra compact design, a petite physique that matches the minimalist design of your modern laptops. Coming with a slim figure that won't block the port next to the one it's plugged into.
- 【Compatibility】Widely work with most usb c, thunderbolt 4/3 devices. Compatibilit for ROG Ally, Steam Deck, Switch, MacBook Pro, Quest 3 VR headset, Surface Book 2, iPhone 18/17/16/15, Samsung Galaxy S23/S22/S21, Note 20/10, Google Pixel, ChromeBook, etc.
- 【Excellence Customer Support】If you experience any issues or cable failure, simply reach out to our dedicated customer service team. We provide a prompt response within 18 hours, providing you with the necessary technical support to resolve any concerns.
| Outbreak | Reported onset | Climate interval identified in the study | What the overlap establishes |
|---|---|---|---|
| Antonine Plague | Around 165 CE | Around 160–180 CE | The reported onset falls within the cold phase. |
| Plague of Cyprian | Around 251 CE | Around 245–275 CE | The reported onset falls within the cold phase. |
| Plague of Justinian | Around 541 CE | After 530 CE | The reported onset falls within a period of strong cooling. |
The dates in the table are the study’s reported climate intervals and approximate outbreak onsets, not proof that cooling began an epidemic. They also should not be mistaken for exact start and end dates for either climate conditions or disease. The climate reconstruction is regional, while epidemics and political boundaries could extend across much larger areas.
How does the climate timeline line up with each plague?
Each of the three named outbreaks falls within a cold interval in the reconstructed record, but the historical evidence and what can be inferred differ from case to case.
The Antonine Plague: around 165 CE
The reported onset around 165 CE falls inside the study’s 160–180 CE cold phase. A historical review describes the outbreak as spreading to Rome and lasting into the late second century. That gives the comparison direct relevance to Roman history, but the Taranto sediments do not tell us what conditions were in Rome during each year of the outbreak. Nor does this climate comparison settle the disease’s identity or a reliable death toll.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
The Plague of Cyprian: around 251 CE
The outbreak’s reported onset around 251 CE falls within the 245–275 CE cold phase. This is a chronological overlap, not evidence that cooling produced the outbreak or determined its course. The research summarized here does not establish the pathogen responsible or a specific climate mechanism for this epidemic.
The Plague of Justinian: around 541 CE
The Plague of Justinian began around 541 CE, during the strong cooling that the Roman Italy study identifies after 530 CE. A separate study defines the Late Antique Little Ice Age as lasting from 536 to about 660 CE and suggests that it may have been an additional environmental factor in the plague’s establishment. “Additional factor” is a proposed contribution, not proof that cooling generated the outbreak. The dating and interpretation of this broader climate episode are distinct from the Taranto study’s regional record.
Also popular on Amazon
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Does the evidence show that cold weather caused the Roman plagues?
No. The study shows that cold phases and outbreak onsets overlapped in time; it does not demonstrate that cold caused the outbreaks. Establishing causation would require evidence for the steps connecting climate conditions to disease emergence or transmission, not just two timelines that align.
Several pathways are conceivable, but the climate reconstruction by itself cannot show that any one of them operated in a particular outbreak. Climate stress could potentially affect harvests, food availability, population health, mobility or the ecology of disease organisms. Social organization and biological conditions could shape whether those environmental effects matter, and how an outbreak spreads. These are questions for further investigation, not findings established by the chronology.
The study authors make that limitation explicit: “The full causal implications of the changing climate for agricultural systems, demographic patterns, and social impact in Roman Italy will require fuller investigation.” The careful wording matters. It leaves room for climate to have contributed to vulnerability or disruption without presenting it as a single cause of three epidemics.
How should readers understand the evidence?
Keep four distinctions in view when reading claims about climate and ancient disease: chronology, geography, evidence type and causal strength.
- Chronology: The three cold intervals overlap with the approximate onset dates of the outbreaks. This temporal alignment is the study’s key comparative result.
- Geography: The climate archive is from the Gulf of Taranto in southern Italy—not from Rome itself, and not a direct record for every place affected by an epidemic.
- Evidence type: Sediment proxies reconstruct environmental conditions. Historical accounts can provide information about reported outbreaks, but ancient written records and natural proxies vary in quality and interpretation. Neither kind of evidence automatically answers every question the other can address.
- Causal strength: The research supports coincidence and motivates the possibility of interaction. It does not establish a specific mechanism linking cooling to the emergence or spread of each plague.
This distinction helps prevent a common leap: “The outbreak happened during a cold phase” is not the same statement as “the cold phase caused the outbreak.” The first is a finding about timing; the second needs a demonstrated causal chain. A regional climate proxy can help historians identify periods worth investigating, but it cannot by itself reconstruct local weather in Rome, explain an epidemic’s pathogen, or measure how climate changed individual exposure and risk.
Also popular on Amazon
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Comparative research also warns against assuming one universal climate–epidemic relationship. A study of ancient China found that the relationship between temperature and epidemics depended on the time scale examined. In its long-run model, cold and dry conditions could be linked to epidemics indirectly through drought, locusts and famine, while associations over shorter windows were unstable. That is useful context for why mechanisms and time scales matter, but it is not evidence that those same pathways explain the Roman outbreaks.
Outdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware matchWindows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallThe wider Mediterranean evidence presents a similar interpretive challenge. Written accounts do not preserve every outbreak or describe every place in the same way, and natural archives each have limits in what they record and where. Historians therefore have to compare evidence types carefully rather than treating a dated textual report and a climate proxy as interchangeable measurements. When they align, the match can help frame a question; it does not close the argument.
It is also useful to separate three levels of claim. The first is chronological: the reported onset of each plague falls within one of the study’s identified cold intervals. The second is a plausible interaction: climate stress may have intersected with ecology, food systems, health, movement or social conditions. The third would be a demonstrated mechanism: evidence showing how a particular climate change altered a particular disease’s emergence or spread. The study supports the first, makes the second worth investigating, and does not establish the third.
What does this finding add to the history of Rome?
It gives researchers a more finely resolved regional climate timeline to compare with major events in Roman and late antique history. A record at approximately three-year resolution can help identify when environmental shifts may have overlapped with social disruptions, more precisely than a broad label such as “the Roman climate.” But higher time resolution does not automatically mean direct observation, city-level coverage or proof of cause.
The title’s reference to Rome needs a geographic qualification. The archive is from the Gulf of Taranto, not the city of Rome. The Antonine Plague is described in a historical review as having spread to Rome, but that does not make the sediment record a measurement of Roman weather. It is evidence for a regional climate history in southern Italy that can be compared with wider historical events. The distinction matters because conditions in one part of Italy cannot automatically stand in for conditions throughout the empire.
Also popular on Amazon
- Portable and powerful USB-C HUB: BENFEI USB Type-C HUB, with super-soft and knot-free silicone woven design cable, meets most mobile office needs. Compact, lightweight, stylish, and powerful portable USB C Hub equipped with 1 x HDMI port, 1 x 100W charging, and 3 x USB ports. 18-month warranty, 24-hour response, to ensure you feel at ease when using our product.
- Design centered on comfort and reliability: Thanks to BENFEI's end-to-end in-house cable production capability, in-house PCBA and assembly capability, using the industry's most advanced silicone woven design and process, 20cm cable in length, no knots, super-soft, the HUB is easy to use in all scenarios: laptop, tablet, stand etc. Super-soft, 25000+ life cycles, to meet your daily carrying and office needs.
- 100W Charging: Support up to 90W USB C pass-through charging via Type-C port to keep your laptop powered. 10W is reserved for other interface operations. No data and video function on the Type-C port.
- 4K HDMI Display: The HDMI port supports media display at resolutions up to 4K 30Hz, keeping every incredible moment detailed and ultra vivid. Please note that the C port of the Host device needs to support video output.
- Transfer Files in Seconds: Transfer files and from your laptop at speeds up to 10 Gbps with USB A 3.2 port. Extra 2 USB A 2.0 ports are perfectly for your keyboards and mouse.
The three overlaps make climate a relevant part of the discussion, especially alongside evidence about food systems, demography, political conditions and disease. They do not reduce the Antonine Plague, Plague of Cyprian or Plague of Justinian to climate events. Each outbreak needs to be studied in its own setting, with the environmental record treated as one line of evidence among several.
For readers who want a broader historical synthesis, Kyle Harper’s The Fate of Rome: Climate, Disease, and the End of an Empire offers a wider treatment of climate, disease and Roman history. It is distinct from the 2024 sediment-proxy study: a book-length synthesis can set environmental evidence in historical context, while the Taranto record supplies a specific regional reconstruction and chronology.
The most defensible conclusion is therefore both notable and limited: the 2024 study identifies three cold phases in a southern Italian marine record that coincide with three major plague onsets. That pattern supports asking how climate stress may have interacted with societies and disease, while leaving the causal answer open.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
What does “approximately three-year resolution” mean in this climate record?
It describes the approximate spacing at which the study can distinguish changes in its reconstructed record. It does not mean the researchers took a direct temperature reading every three years, or that each value represents conditions in Rome.
Recommended Free Tools
Can this climate study identify the pathogen behind any of the three plagues?
No. Its evidence is a sediment-based reconstruction of past climate, not pathogen evidence. The climate comparison therefore cannot settle the identity of the disease agent in any outbreak.
Also popular on Amazon
- 【Read before You Buy】 Note: This adapter is USB 2.0 version and cannot transmit HDM, VGA, or other video signals. Nevertheless, they are fully capable of charging devices,duplicating files, and can be seamlessly integrated with USB-C earphones, wireless network adapters, and SD card adapters.
- 【Easy to Use and Safe】Thanks to modern manufacturing techniques, we've made these adapters sufficiently compact so that they can remain inserted in your device without noticeable protrusion or inconvenience. This means you don't have to constantly plug and unplug them, reducing the likelihood of wear and misalignment, and making them more convenient to carry around.
- 【Reliable Quality】Engineered for enhanced durability, durable aluminum alloy shell material,get excellent wear resistance and heat dissipation,the male USB C and female USB connectors & the male USB and female USB C connectors are designed to be plugged and unplugged up to 20000 times. Provides data transfer, device charging, memory space expansion, and additional computer peripherals.
- 【Think more for you】Do you need to connect a USB-C-enabled device to an odd device that only has USB-A ports? Then these USB-A male to USB-C female adapters are made for you.Simply insert the adapter into the USB-A port on the device, and you can instantly connect your USB-C device to the device that originally didn't have the correct connection port.
- 【Trusted xiwxi Quality and Service】As a responsible brand seller, you will receive xiwxi's 12-month Quality assurance and lifetime friendly customer service, you're not just buying a product,you're investing in peace of mind with all-round quality and exceptional customer service.
Why use sediment evidence alongside ancient written accounts?
They answer different questions: sediments can contribute a regional environmental timeline, while written sources can help document how an outbreak was described or where it spread. Both have limitations, so agreement in timing is useful context rather than automatic proof of a mechanism.
Did climate change cause the Roman plagues?
The study does not show that it did. It finds that three cold intervals overlapped with approximate outbreak onsets. A causal claim would require evidence connecting climate conditions to a specific change in disease emergence or transmission.
What evidence connects the Antonine, Cyprian and Justinianic plagues to cooling?
The connection is chronological: the study identifies cold phases around 160–180 CE, 245–275 CE and after 530 CE, overlapping reported outbreak onsets around 165, 251 and 541 CE. The climate evidence is a marine sediment proxy from the Gulf of Taranto, not a direct record of conditions in Rome.
Free tools Windows power users keep installed
One-click scans. No signup required.
Does the Gulf of Taranto record describe the climate in Rome?
No. It reconstructs regional temperature and precipitation in southern Italy from marine sediments. The record can be compared with events elsewhere, but it is not a city-level measurement for Rome or a record for every place affected by an epidemic.
What is the Late Antique Little Ice Age, and how does it relate to the Justinianic Plague?
A separate study defines it as a period from 536 to about 660 CE and suggests it may have been an additional environmental factor in the Justinianic Plague’s establishment. That is a proposed contribution, not proof that cooling caused the plague.
The Bottom Line
Bottom line: A 2024 marine sediment record from the Gulf of Taranto identifies cold phases that overlap with the approximate onsets of three major Roman-era plagues. This makes climate stress a plausible part of the historical context, not a demonstrated cause. The record is regional rather than Rome-specific, and the study leaves the causal mechanisms open for further investigation.
Say something about this film