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Are there any gridded surface air temperature data?
Global surface marine data from 1800 to near the present summarized in monthly gridded formats (2°x2° boxes, or 1°x1° boxes from 1960 forward), and offering a variety of statistics. Livneh daily CONUS near-surface gridded meteorological and derived hydrometeorological data. This CONUS daily dataset from 1915 to 2011 is 1/16 resolution.
Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is called anticyclonic flow. Air from higher in the atmosphere sinks down to fill the space left as air is blown outward.
How are gridded anomalies of air temperature calculated?
Monthly gridded anomalies of air temperature from the GHCN-M and the NOAA ERSST V4 dataset. Produced weekly on a 1° grid. The analysis uses in situ and satellite SST’s plus SST’s simulated by sea-ice cover. Before the analysis is computed, the satellite data is adjusted for biases. Monthly and monthly long-term means are also available.
What makes a low pressure system higher than a high pressure system?
Because of Earth’s spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator. This is called cyclonic flow. On weather maps, a low pressure system is labeled with red L. A high pressure system has higher pressure at its center than the areas around it.
How does the GISS Surface Temperature Analysis work?
The GISS Surface Temperature Analysis (GISTEMP v4) is an estimate of global surface temperature change. Graphs and tables are updated around the middle of every month using current data files from NOAA GHCN v4 (meteorological stations), and ERSST v5 (ocean areas), combined as described in our publications Hansen et al.
How is GISTEMP used to calculate surface temperature?
The GISTEMP analysis method uses linear inverse distance weighting to infill gridboxes with records from stations up to 1200km away (a version with a 250km limit is also provided). The GISS Surface Temperature Analysis (GISTEMP v4) is an estimate of global surface temperature change (Figure 1).