geographic information-imagery and gridded data 地理信息.成象和柵極數(shù)據(jù)
as a model, spline interpolation on a uniform tetrahedral partition was used, and the spline coefficients were repeated by the gridded samples 該模型以樣條基函數(shù)為背景,系數(shù)則由周圍采樣點數(shù)據(jù)重復(fù)迭代產(chǎn)生。
(2 ) calculating the gridded rayleigh wave attenuation factor y and group velocity . the lsqr algorithm is used to inverse the attenuation factor and group velocity under 4 ? x4 ? gridding and 2 (2)進(jìn)行rayleigh波衰減系數(shù)、群速度網(wǎng)格化純路徑衰減反演計算,得到網(wǎng)格單元純路徑衰減系數(shù)和群速度分布結(jié)構(gòu)。
this approach, using elliptical influence functions, involves the optimum blending of observations from a monitoring network with gridded pollution fields predicted by the complex air quality model tapm 這個方法使用橢圓的影響函數(shù),并且以最理想的方式混合了監(jiān)測網(wǎng)的觀察值與復(fù)雜空氣品質(zhì)模式(tapm)所預(yù)測的污染區(qū)域。
due to the increase of time interval and decrease of precipitation intensity within a month, no monthly runoff appears in some gridded cells as the xin'anjiang monthly hydrological model is applied to the huaihe river basin 由于計算時段加長,雨強(qiáng)均化,導(dǎo)致原新安江月水文模型在淮河流域的應(yīng)用中,網(wǎng)格徑流深出現(xiàn)了大量不合理的零值。