R Resample Raster Behaving Inconsistently - r

Question

I have two netCDF files with different extents and resolutions. I would like to create rasters from both files that are the same extent and resolution. I want the resolution from one file, and the extent from the other.
Here is the code I'm using:
require(raster);
#Get information
iceMaxNineK <- raster("~/Desktop/TRACE-21k_Data/NineK.ICEFRAC.max.avg.nc")
saltNineK <- brick("~/Desktop/TRACE-21k_Data/NineK.SALT.nc", lvar = 4)
#Making everything nice and uniform and useable
#==============================================
#set up an initial "sampling raster"
e <- extent(0, 360, -90, 90) #xmin,xmax,ymin,ymax
e <- raster(e,nrows=1,ncols=1,crs=saltNineK#crs)
res(e) <- res(saltNineK)
values(e) <- 0
#Resample ice
iceMaxNineK <- resample(iceMaxNineK, e, method="ngb")
plot(iceMaxNineK)
#Resample salt
saltNineK <- resample(saltNineK, e, method="ngb")
plot(saltNineK)
Resampling iceMaxNineK works, but resampling saltNineK results in a map that is jammed up into one corner of the defined area of extent, as shown in the pictures below.
First, iceMaxNineK:
Second, saltNineK:
Dimensions of iceMaxNineK before resampling:
class : RasterLayer
dimensions : 48, 96, 4608 (nrow, ncol, ncell)
resolution : 3.75, 3.708898 (x, y)
extent : -1.875, 358.125, -89.01354, 89.01354 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
data source : /Users/Hannah/Desktop/TRACE-21k_Data/NineK.ICEFRAC.max.avg.nc
names : Fraction.of.sfc.area.covered.by.sea.ice
z-value : -8.99945876078469
zvar : ICEFRAC
Dimensions of iceMaxNineK after resampling:
class : RasterLayer
dimensions : 180, 360, 64800 (nrow, ncol, ncell)
resolution : 1, 1 (x, y)
extent : 0, 360, -90, 90 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
data source : in memory
names : Fraction.of.sfc.area.covered.by.sea.ice
values : 0, 0.9997393 (min, max)
Dimensions of saltNineK before resampling:
class : RasterBrick
dimensions : 116, 100, 11600, 25 (nrow, ncol, ncell, nlayers)
resolution : 1, 1 (x, y)
extent : 0.5, 100.5, 0.5, 116.5 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
data source : /Users/Hannah/Desktop/TRACE-21k_Data/NineK.SALT.nc
names : X400, X1222.02453613281, X2108.88061523438, X3100.537109375, X4239.19677734375, X5577.873046875, X7187.42822265625, X9166.115234375, X11653.9140625, X14854.84765625, X19072.095703125, X24762.70703125, X32618.9296875, X43673.65625, X59384.83984375, ...
centimeters : 400, 475128.78125 (min, max)
varname : SALT
level : 1
Dimensions of saltNineK after resampling:
class : RasterBrick
dimensions : 180, 360, 64800, 25 (nrow, ncol, ncell, nlayers)
resolution : 1, 1 (x, y)
extent : 0, 360, -90, 90 (xmin, xmax, ymin, ymax)
coord. ref. : +proj=longlat +datum=WGS84 +ellps=WGS84 +towgs84=0,0,0
data source : in memory
names : X400, X1222.02453613281, X2108.88061523438, X3100.537109375, X4239.19677734375, X5577.873046875, X7187.42822265625, X9166.115234375, X11653.9140625, X14854.84765625, X19072.095703125, X24762.70703125, X32618.9296875, X43673.65625, X59384.83984375, ...
min values : 6.842899, 6.850603, 6.853004, 6.853779, 6.853567, 23.148109, 23.148115, 23.148115, 23.148119, 23.148121, 23.148121, 23.148121, 23.148121, 23.148121, 23.148121, ...
max values : 39.60786, 39.60786, 39.60783, 39.60777, 39.60769, 39.60766, 39.60765, 39.60757, 39.60755, 39.60742, 39.60739, 39.60732, 39.60730, 39.60730, 39.60730, ...
Sample files can be accessed via the following link: https://www.dropbox.com/s/x8oqem317vmr7yq/DataForRResample.zip?dl=0
Thank you for your time.

Answer 1

I have now solved this question. The problem was the input file, which was at a T31_gx3v5 resolution (http://www.cgd.ucar.edu/ccr/TraCE/; Yeager et al., 2006; Otto-Bliesner et al., 2006). R doesn't pick up on this. The layers needed to be regridded to 1X1 degree using the ncl language before importing them into R. For more information on regridding in ncl, follow this link: https://www.ncl.ucar.edu/Document/Functions/Pop_remap/PopLatLon.shtml.