diff --git a/science/nco/Portfile b/science/nco/Portfile
index a20d00bd8de2e..d145a65faf254 100644
--- a/science/nco/Portfile
+++ b/science/nco/Portfile
@@ -5,7 +5,7 @@ PortGroup           compilers 1.0
 PortGroup           github 1.0
 
 github.setup        nco nco 5.0.3
-revision            1
+revision            2
 platforms           darwin
 maintainers         {takeshi @tenomoto}
 license             GPL-3
@@ -65,14 +65,7 @@ configure.args      --disable-dependency-tracking \
                     --disable-openmp
 
 if {[gcc_variant_isset] || [clang_variant_isset]} {
-    default_variants    +openmp
-}
-
-if {[variant_isset atlas]} {
-    configure.ldflags-append    -lsatlas
-} else {
-    default_variants-append     +accelerate
-    configure.ldflags-append    -lvecLibFort
+    default_variants-append +openmp
 }
 
 post-destroot {
@@ -100,12 +93,10 @@ variant mpich description {enable MPI with mpich (currently MPI is not supported
 variant openmpi description {enable MPI with openmpi (currently MPI is not supported)} {
 }
 
-variant accelerate conflicts atlas description {use Accelerate framework for LAPACK} {
-    depends_lib-append  port:vecLibFort
-}
-
-variant atlas conflicts accelerate description {use Atlas for LAPACK} {
-    depends_lib-append  port:atlas
+variant esmf description {use ESMF (Earth System Modeling Framework)} {
+    configure.args-delete   --disable-esmf
+    configure.args-append   --enable-esmf
+    depends_lib-append      port:esmf
 }
 
 livecheck.type              regex