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Climate · Comparisons
A downpour can last an hour; a monsoon describes a seasonal change in atmospheric circulation. Confusing the two makes a wet-season map look like a storm forecast and…
Lima · Climate · Explainers
A gray sky, damp pavement and a desert landscape can all belong to the same city. Lima is a useful place to untangle a common climate misunderstanding: moisture…
United States · Climate · Map guides
An El Niño map, a winter outlook and a snowfall forecast answer different questions. The useful comparison for this winter is between the Pacific climate signal and NOAA’s…
Georgia · Climate · Map guides
A wet Black Sea coast and a much drier eastern city can appear in the same climate category. That is not necessarily a map error: climate classifications describe…
Tbilisi · Travel geography · Place guides
A warm afternoon in Tbilisi does not tell you whether the Black Sea coast will be dry or a mountain trail will be snow-free. This guide compares three…
Climate · Comparisons
Both storms rotate, both can cause destructive winds, and both appear in dramatic weather images. Those similarities hide an important distinction: a hurricane is a whole weather system,…
Climate · Explainers
A mountain summit is often colder than the lowlands, but “higher means colder” has exceptions. To understand the pattern, separate two questions: what happens to air as it…
Climate · Explainers
“River in the sky” is a memorable phrase, but it can suggest the wrong picture: a suspended stream of liquid water. The real feature is moving moisture, and…
Climate · Comparisons
A winter forecast can change from snow to sleet to freezing rain even while your outdoor thermometer stays below freezing. The missing information is above your head: falling…
Climate · Explainers
Changing the baseline shifts the anomaly numbers for an unchanged annual temperature series, sometimes reversing their signs, while preserving every year-to-year temperature difference. With one fixed reference mean…
Landforms · Explainers
Calculate storm-hydrograph runoff volume by subtracting an assumed baseflow from discharge and integrating the remaining rate over time. Divide that volume by contributing area for equivalent depth. This…
Climate · Explainers
To read a weather station model, check the time, units and legend, then decode the numbers around the station circle and the wind shaft attached to it. In…