Although drifters and buoys, together with cruises, have accumulated large amount in-situ water salinity data in different regions, it is still difficult to monitor global ocean salinity with high temporal-spatial resolution by the in situ measurements.
1	Although	although	SCONJ	IN	_	11	mark	11:mark	Discourse=adversative-concession:5->6:0
2	drifters	drifter	NOUN	NNS	Number=Plur	11	nsubj	11:nsubj	Entity=(11-object-new-cf2-1-sgl)
3	and	and	CCONJ	CC	_	4	cc	4:cc	_
4	buoys	buoy	NOUN	NNS	Number=Plur	2	conj	2:conj:and|11:nsubj	Entity=(12-object-new-cf6-1-sgl)|SpaceAfter=No
5	,	,	PUNCT	,	_	6	punct	6:punct	_
6	together	together	ADV	RB	Degree=Pos	2	advmod	2:advmod	_
7	with	with	ADP	IN	_	8	case	8:case	_
8	cruises	cruise	NOUN	NNS	Number=Plur	6	obl	6:obl:with	Entity=(13-event-new-cf7-1-sgl)|SpaceAfter=No
9	,	,	PUNCT	,	_	2	punct	2:punct	_
10	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	11	aux	11:aux	_
11	accumulated	accumulate	VERB	VBN	Tense=Past|VerbForm=Part	27	advcl	27:advcl:although	_
12	large	large	ADJ	JJ	Degree=Pos	13	amod	13:amod	Entity=(14-abstract-new-cf3-2-sgl
13	amount	amount	NOUN	NN	Number=Sing|Typo=Yes	11	obj	11:obj	CorrectForm=amounts|XML=<sic ana:::"amounts"></sic>
14	in	in	X	FW	_	19	amod	19:amod	Entity=(15-abstract-new-cf8-6-sgl|SpaceAfter=No|XML=<w>
15	-	-	PUNCT	HYPH	_	16	punct	16:punct	SpaceAfter=No
16	situ	situ	X	FW	_	14	flat	14:flat	XML=</w>
17	water	water	NOUN	NN	Number=Sing	18	compound	18:compound	Entity=(16-abstract-new-cf11-2-sgl(17-substance-new-cf12-1-sgl)
18	salinity	salinity	NOUN	NN	Number=Sing	19	compound	19:compound	Entity=16)
19	data	datum	NOUN	NNS	Number=Plur	13	nmod	13:nmod	Entity=15)14)
20	in	in	ADP	IN	_	22	case	22:case	_
21	different	different	ADJ	JJ	Degree=Pos	22	amod	22:amod	Entity=(18-place-new-cf9-2-sgl
22	regions	region	NOUN	NNS	Number=Plur	11	obl	11:obl:in	Entity=18)|SpaceAfter=No
23	,	,	PUNCT	,	_	11	punct	11:punct	_
24	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	27	expl	27:expl	Discourse=context-background:6->43:4|Entity=(19-abstract-new-cf1-1-cata)
25	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	27	cop	27:cop	_
26	still	still	ADV	RB	Degree=Pos	27	advmod	27:advmod	_
27	difficult	difficult	ADJ	JJ	Degree=Pos	0	root	0:root	_
28	to	to	PART	TO	_	29	mark	29:mark	Entity=(19-abstract-acc:com-cf1-2-coref
29	monitor	monitor	VERB	VB	VerbForm=Inf	27	csubj	27:csubj	_
30	global	global	ADJ	JJ	Degree=Pos	32	amod	32:amod	Entity=(20-abstract-new-cf4-3-coref
31	ocean	ocean	NOUN	NN	Number=Sing	32	compound	32:compound	Entity=(21-place-new-cf13-1-coref)
32	salinity	salinity	NOUN	NN	Number=Sing	29	obj	29:obj	Entity=20)
33	with	with	ADP	IN	_	38	case	38:case	_
34	high	high	ADJ	JJ	Degree=Pos	38	amod	38:amod	Entity=(22-abstract-new-cf10-5-sgl
35	temporal	temporal	ADJ	JJ	Degree=Pos	37	compound	37:compound	SpaceAfter=No|XML=<w>
36	-	-	PUNCT	HYPH	_	35	punct	35:punct	SpaceAfter=No
37	spatial	spatial	ADJ	JJ	Degree=Pos	38	amod	38:amod	XML=</w>
38	resolution	resolution	NOUN	NN	Number=Sing	29	obl	29:obl:with	Entity=22)
39	by	by	ADP	IN	_	43	case	43:case	_
40	the	the	DET	DT	Definite=Def|PronType=Art	43	det	43:det	Entity=(23-abstract-new-cf5-4-sgl
41	in	in	X	FW	_	43	amod	43:amod	_
42	situ	situ	X	FW	_	41	flat	41:flat	_
43	measurements	measurement	NOUN	NNS	Number=Plur	29	obl	29:obl:by	Entity=23)19)|SpaceAfter=No
44	.	.	PUNCT	.	_	27	punct	27:punct	_
