Also found in: Dictionary, Medical, Wikipedia.


The climate of a large geographic region.



the climate of large geographic areas such as geographic zones, continents and oceans or large parts thereof, or even the entire earth; macroclimate deals with the main climatic features of these areas. If such a part of the earth’s surface is sufficiently uniform in its geographic factors and conditions of general atmospheric circulation it will have a certain macroclimate. For example, it is possible to speak of the macro-climate of the tradewinds zone, of Eastern Siberia, of the Mediterranean Basin, and the Antarctic Plateau. Macroclimates are characterized by quantitative indexes that refer to the entire area being considered (that is, intervals within which particular climatic characteristics change throughout the area or their average values for the entire area). The macroclimate is contrasted with the local climate and microclimate.

References in periodicals archive ?
Macroclimate is climate discussed in the continental or planetary scale.
bolting electromagnetic spectrum etiolation frost-sensitive frost-tender frost-tolerant growing degree days lake effect macroclimate microclimate photon phototropism phytochrome vernalization
Know your macroclimate and learn about your mesoclimates.
Burke IC, Elliott ET, Cole CV (1995) Influence of macroclimate, landscape position, and management on soil organic matter in agroecosystems.
The process involved overlaying data on macroclimate and mesoclimate, such as frost dates, frequency of extreme low temperatures, degree days, aspect, slope, present land use, and soils.
In addition to a general introduction in Chapter 1 that covers general aspects of macroclimate and global crop production and soils, the book is organized in three main parts, and an appendix with terminology in agronomy, units, symbols, and conversion factors.
In the case of climate change, respondents concluded that while understanding of macroclimate changes is relatively good, understanding of regional climate change trends and their impacts on ecosystems is poor.
Despite this difference in the macroclimate, we detected no significant fragment size by year interactions in our analyses.
The microclimate or precise climatic conditions which organisms can tolerate at a specific location can be very different from the macroclimate which affects a particular zone.
Macroclimate is thought to influence communities directly through physiological effects on organisms and by limiting populations.
Relief and surface slope, by affecting the macroclimate, help determine local soils, vegetation, and animals.