Marine & Continental Weather
Climate Signals

Climate Signals

The longer-term context behind today's weather. Ocean heat content, surface temperature departures, sea ice. Curated launchers into Climate Reanalyzer at the University of Maine and adjacent climate monitoring tools — the sources that drove the viral 2023–24 ocean-warmth conversation.

Daily Sea Surface Temperature

NOAA OISST v2.1

Daily SST and anomaly maps from the dataset behind the viral 2023–24 ocean-warmth charts. One to two-day lag from real time. Region selector for the world, North Atlantic, Pacific, Gulf, Indian Ocean, and the main hurricane main development region.

Daily · ~2-day lag Launch viewer →

Daily 2m Air Temperature

ECMWF ERA5

Surface air temperature and departure from the 1979–2000 climatological normal, daily. The atmospheric companion to SST — where the ocean and the air boundary meet, rendered as a global anomaly field.

Daily Map Animation

Combined viewer

Animated viewer for SST, 2m air temperature, and sea ice concentration. Date slider plays back through any year and basin. The fastest way to see how an anomaly evolved week over week, season over season.

Daily · full archive Launch viewer →

Monthly SST

NOAA ERSSTv5

Monthly aggregated SST and anomaly maps back to 1854 (gridded reanalysis). Long-term context for the daily snapshots — month-by-month, year-by-year, the full instrumental record visible in one place.

Monthly · 170-year archive Launch viewer →

ENSO & MJO Indices

NOAA CPC

El Niño–Southern Oscillation and Madden–Julian Oscillation diagnostics from the Climate Prediction Center. The two drivers that shape seasonal forecasts — ENSO for the Pacific basin state, MJO for the 30–60 day tropical wave train.

Weekly updates Launch viewer →

Sea Ice Concentration

NSIDC

National Snow and Ice Data Center, University of Colorado. Arctic and Antarctic sea ice extent, daily and monthly. The polar boundary of the climate system — where the ocean meets the cryosphere.

Daily anomaly imagery from Climate Reanalyzer, University of Maine Climate Change Institute (CC-BY-4.0). Climate indices from NOAA Climate Prediction Center and the National Snow and Ice Data Center at the University of Colorado.