Medium need for irrigation for the 30-year period 2071-2100, No climate protection scenario (RCP8.5)

The map shows the mean need for irrigation (in mm) for the 30-year period 2071-2100 under the “No-Climate” scenario (RCP8.5). Irrigation requirement is the mean amount of irrigation within the growing season (April-September) required to maintain 40 % usable field capacity (nFK) in the effective root space (nFCs). The average amount of irrigation is calculated for an average of the fruit species winter wheat, winter barley, winter barley with intermediate fruit, summer barley, corn, sugar beet and potatoes. The climate models are driven by the “No-Climate Protection” scenario (RCP8.5). This is a scenario of the IPCC, which describes a continuous increase in global greenhouse gas emissions, resulting in an additional radiative propulsion of 8.5 watts per m² compared to pre-industrial levels by the end of the 21st century. The results of all climate models are equally likely. Therefore, in addition to the mean, which shows a tendency, the upper (maximum) and lower (minimum) edge of the result bandwidth can be retrieved via the maptip.本地图展示了"无气候防护"情景（RCP8.5）下2071-2100年这30年时段的平均灌溉需水量（单位：毫米）。灌溉需水量指为维持有效根系空间（nFCs）内40%的田间有效持水量（nFK），在作物生育期（4月至9月）内所需的平均灌溉水量。该平均灌溉水量基于冬小麦、冬大麦、中间型冬大麦、夏大麦、玉米、糖用甜菜及马铃薯的平均值计算得到。本研究所用的气候模型由"无气候防护"情景（RCP8.5）驱动，该情景由政府间气候变化专门委员会（IPCC）提出，描述了全球温室气体排放量持续增长的态势，至21世纪末，相较于工业化前水平，全球额外辐射强迫将达到8.5瓦每平方米。所有气候模型的模拟结果具有同等可信度。因此，除了能够体现趋势的平均值之外，用户还可通过地图提示（maptip）获取结果区间的上限（最大值）与下限（最小值）边界。