Research article
|
27 Aug 2019
Research article |
|
27 Aug 2019
Severe winter haze days in the Beijing–Tianjin–Hebei region from 1985 to 2017 and the roles of anthropogenic emissions and meteorology
Ruijun Dang and Hong Liao
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Total article views: 4,681 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
Supplement
BibTeX
EndNote
3,341
1,266
74
4,681
389
100
146
HTML: 3,341
PDF: 1,266
XML: 74
Total: 4,681
Supplement: 389
BibTeX: 100
EndNote: 146
Views and downloads (calculated since 30 Apr 2019)
Month
HTML
PDF
XML
Total
Apr 2019
70
26
0
96
May 2019
164
57
2
223
Jun 2019
17
10
0
27
Jul 2019
16
15
1
32
Aug 2019
241
111
1
353
Sep 2019
126
40
2
168
Oct 2019
37
26
1
64
Nov 2019
26
29
0
55
Dec 2019
33
20
0
53
Jan 2020
22
22
0
44
Feb 2020
45
18
1
64
Mar 2020
26
10
0
36
Apr 2020
23
12
0
35
May 2020
28
10
1
39
Jun 2020
18
14
0
32
Jul 2020
32
22
3
57
Aug 2020
24
18
2
44
Sep 2020
12
7
1
20
Oct 2020
5
11
0
16
Nov 2020
9
7
0
16
Dec 2020
20
9
0
29
Jan 2021
23
10
0
33
Feb 2021
15
5
1
21
Mar 2021
15
10
0
25
Apr 2021
27
17
0
44
May 2021
13
11
1
25
Jun 2021
9
6
0
15
Jul 2021
26
10
0
36
Aug 2021
24
13
0
37
Sep 2021
18
13
0
31
Oct 2021
21
37
0
58
Nov 2021
28
17
2
47
Dec 2021
18
11
0
29
Jan 2022
21
8
0
29
Feb 2022
17
10
2
29
Mar 2022
17
11
1
29
Apr 2022
38
13
1
52
May 2022
40
11
0
51
Jun 2022
38
6
1
45
Jul 2022
47
8
0
55
Aug 2022
112
8
0
120
Sep 2022
44
8
0
52
Oct 2022
20
7
1
28
Nov 2022
32
11
0
43
Dec 2022
44
7
0
51
Jan 2023
54
6
0
60
Feb 2023
57
13
0
70
Mar 2023
81
20
2
103
Apr 2023
28
11
0
39
May 2023
26
18
0
44
Jun 2023
21
11
1
33
Jul 2023
32
3
1
36
Aug 2023
41
20
4
65
Sep 2023
58
6
0
64
Oct 2023
120
9
2
131
Nov 2023
151
5
0
156
Dec 2023
52
18
1
71
Jan 2024
49
10
1
60
Feb 2024
32
15
1
48
Mar 2024
51
27
2
80
Apr 2024
53
30
4
87
May 2024
33
13
1
47
Jun 2024
51
9
1
61
Jul 2024
44
9
2
55
Aug 2024
28
10
3
41
Sep 2024
21
7
0
28
Oct 2024
34
8
0
42
Nov 2024
38
6
2
46
Dec 2024
28
10
2
40
Jan 2025
37
25
0
62
Feb 2025
33
13
0
46
Mar 2025
27
13
1
41
Apr 2025
45
15
3
63
May 2025
51
7
1
59
Jun 2025
64
14
6
84
Jul 2025
44
22
1
67
Aug 2025
50
23
1
74
Sep 2025
36
20
2
58
Oct 2025
26
34
0
60
Nov 2025
44
24
4
72
Cumulative views and downloads
(calculated since 30 Apr 2019)
Month
HTML views
PDF downloads
XML downloads
Apr 2019
70
26
0
96
May 2019
234
83
2
319
Jun 2019
251
93
2
346
Jul 2019
267
108
3
378
Aug 2019
508
219
4
731
Sep 2019
634
259
6
899
Oct 2019
671
285
7
963
Nov 2019
697
314
7
1,018
Dec 2019
730
334
7
1,071
Jan 2020
752
356
7
1,115
Feb 2020
797
374
8
1,179
Mar 2020
823
384
8
1,215
Apr 2020
846
396
8
1,250
May 2020
874
406
9
1,289
Jun 2020
892
420
9
1,321
Jul 2020
924
442
12
1,378
Aug 2020
948
460
14
1,422
Sep 2020
960
467
15
1,442
Oct 2020
965
478
15
1,458
Nov 2020
974
485
15
1,474
Dec 2020
994
494
15
1,503
Jan 2021
1,017
504
15
1,536
Feb 2021
1,032
509
16
1,557
Mar 2021
1,047
519
16
1,582
Apr 2021
1,074
536
16
1,626
May 2021
1,087
547
17
1,651
Jun 2021
1,096
553
17
1,666
Jul 2021
1,122
563
17
1,702
Aug 2021
1,146
576
17
1,739
Sep 2021
1,164
589
17
1,770
Oct 2021
1,185
626
17
1,828
Nov 2021
1,213
643
19
1,875
Dec 2021
1,231
654
19
1,904
Jan 2022
1,252
662
19
1,933
Feb 2022
1,269
672
21
1,962
Mar 2022
1,286
683
22
1,991
Apr 2022
1,324
696
23
2,043
May 2022
1,364
707
23
2,094
Jun 2022
1,402
713
24
2,139
Jul 2022
1,449
721
24
2,194
Aug 2022
1,561
729
24
2,314
Sep 2022
1,605
737
24
2,366
Oct 2022
1,625
744
25
2,394
Nov 2022
1,657
755
25
2,437
Dec 2022
1,701
762
25
2,488
Jan 2023
1,755
768
25
2,548
Feb 2023
1,812
781
25
2,618
Mar 2023
1,893
801
27
2,721
Apr 2023
1,921
812
27
2,760
May 2023
1,947
830
27
2,804
Jun 2023
1,968
841
28
2,837
Jul 2023
2,000
844
29
2,873
Aug 2023
2,041
864
33
2,938
Sep 2023
2,099
870
33
3,002
Oct 2023
2,219
879
35
3,133
Nov 2023
2,370
884
35
3,289
Dec 2023
2,422
902
36
3,360
Jan 2024
2,471
912
37
3,420
Feb 2024
2,503
927
38
3,468
Mar 2024
2,554
954
40
3,548
Apr 2024
2,607
984
44
3,635
May 2024
2,640
997
45
3,682
Jun 2024
2,691
1,006
46
3,743
Jul 2024
2,735
1,015
48
3,798
Aug 2024
2,763
1,025
51
3,839
Sep 2024
2,784
1,032
51
3,867
Oct 2024
2,818
1,040
51
3,909
Nov 2024
2,856
1,046
53
3,955
Dec 2024
2,884
1,056
55
3,995
Jan 2025
2,921
1,081
55
4,057
Feb 2025
2,954
1,094
55
4,103
Mar 2025
2,981
1,107
56
4,144
Apr 2025
3,026
1,122
59
4,207
May 2025
3,077
1,129
60
4,266
Jun 2025
3,141
1,143
66
4,350
Jul 2025
3,185
1,165
67
4,417
Aug 2025
3,235
1,188
68
4,491
Sep 2025
3,271
1,208
70
4,549
Oct 2025
3,297
1,242
70
4,609
Nov 2025
3,341
1,266
74
4,681
Total article views: 4,008 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
Supplement
BibTeX
EndNote
3,007
936
65
4,008
231
86
130
HTML: 3,007
PDF: 936
XML: 65
Total: 4,008
Supplement: 231
BibTeX: 86
EndNote: 130
Views and downloads (calculated since 27 Aug 2019)
Month
HTML
PDF
XML
Total
Aug 2019
226
97
1
324
Sep 2019
122
39
2
163
Oct 2019
33
19
1
53
Nov 2019
24
27
0
51
Dec 2019
33
17
0
50
Jan 2020
21
16
0
37
Feb 2020
44
16
1
61
Mar 2020
26
8
0
34
Apr 2020
22
11
0
33
May 2020
28
9
1
38
Jun 2020
12
7
0
19
Jul 2020
30
15
3
48
Aug 2020
24
11
2
37
Sep 2020
12
7
0
19
Oct 2020
4
10
0
14
Nov 2020
9
6
0
15
Dec 2020
20
8
0
28
Jan 2021
23
7
0
30
Feb 2021
15
4
1
20
Mar 2021
15
5
0
20
Apr 2021
22
10
0
32
May 2021
13
6
1
20
Jun 2021
9
6
0
15
Jul 2021
25
6
0
31
Aug 2021
24
9
0
33
Sep 2021
18
11
0
29
Oct 2021
21
33
0
54
Nov 2021
26
14
1
41
Dec 2021
18
7
0
25
Jan 2022
21
7
0
28
Feb 2022
17
9
2
28
Mar 2022
17
7
1
25
Apr 2022
38
10
1
49
May 2022
39
7
0
46
Jun 2022
38
5
1
44
Jul 2022
47
6
0
53
Aug 2022
112
8
0
120
Sep 2022
44
6
0
50
Oct 2022
19
6
1
26
Nov 2022
31
8
0
39
Dec 2022
41
4
0
45
Jan 2023
54
4
0
58
Feb 2023
56
10
0
66
Mar 2023
79
17
2
98
Apr 2023
27
9
0
36
May 2023
26
14
0
40
Jun 2023
21
9
1
31
Jul 2023
29
3
1
33
Aug 2023
41
16
4
61
Sep 2023
58
5
0
63
Oct 2023
120
5
2
127
Nov 2023
151
4
0
155
Dec 2023
52
14
1
67
Jan 2024
49
8
1
58
Feb 2024
32
13
1
46
Mar 2024
51
18
1
70
Apr 2024
52
26
4
82
May 2024
33
13
1
47
Jun 2024
50
5
1
56
Jul 2024
44
7
2
53
Aug 2024
28
9
3
40
Sep 2024
21
5
0
26
Oct 2024
34
6
0
40
Nov 2024
37
4
2
43
Dec 2024
28
9
2
39
Jan 2025
37
23
0
60
Feb 2025
31
8
0
39
Mar 2025
27
13
1
41
Apr 2025
45
11
3
59
May 2025
50
7
0
57
Jun 2025
63
12
6
81
Jul 2025
44
21
1
66
Aug 2025
49
17
1
67
Sep 2025
36
16
1
53
Oct 2025
26
30
0
56
Nov 2025
43
21
3
67
Cumulative views and downloads
(calculated since 27 Aug 2019)
Month
HTML views
PDF downloads
XML downloads
Aug 2019
226
97
1
Sep 2019
348
136
3
Oct 2019
381
155
4
Nov 2019
405
182
4
Dec 2019
438
199
4
Jan 2020
459
215
4
Feb 2020
503
231
5
Mar 2020
529
239
5
Apr 2020
551
250
5
May 2020
579
259
6
Jun 2020
591
266
6
Jul 2020
621
281
9
Aug 2020
645
292
11
Sep 2020
657
299
11
Oct 2020
661
309
11
Nov 2020
670
315
11
Dec 2020
690
323
11
Jan 2021
713
330
11
Feb 2021
728
334
12
Mar 2021
743
339
12
Apr 2021
765
349
12
May 2021
778
355
13
Jun 2021
787
361
13
Jul 2021
812
367
13
Aug 2021
836
376
13
Sep 2021
854
387
13
Oct 2021
875
420
13
Nov 2021
901
434
14
Dec 2021
919
441
14
Jan 2022
940
448
14
Feb 2022
957
457
16
Mar 2022
974
464
17
Apr 2022
1,012
474
18
May 2022
1,051
481
18
Jun 2022
1,089
486
19
Jul 2022
1,136
492
19
Aug 2022
1,248
500
19
Sep 2022
1,292
506
19
Oct 2022
1,311
512
20
Nov 2022
1,342
520
20
Dec 2022
1,383
524
20
Jan 2023
1,437
528
20
Feb 2023
1,493
538
20
Mar 2023
1,572
555
22
Apr 2023
1,599
564
22
May 2023
1,625
578
22
Jun 2023
1,646
587
23
Jul 2023
1,675
590
24
Aug 2023
1,716
606
28
Sep 2023
1,774
611
28
Oct 2023
1,894
616
30
Nov 2023
2,045
620
30
Dec 2023
2,097
634
31
Jan 2024
2,146
642
32
Feb 2024
2,178
655
33
Mar 2024
2,229
673
34
Apr 2024
2,281
699
38
May 2024
2,314
712
39
Jun 2024
2,364
717
40
Jul 2024
2,408
724
42
Aug 2024
2,436
733
45
Sep 2024
2,457
738
45
Oct 2024
2,491
744
45
Nov 2024
2,528
748
47
Dec 2024
2,556
757
49
Jan 2025
2,593
780
49
Feb 2025
2,624
788
49
Mar 2025
2,651
801
50
Apr 2025
2,696
812
53
May 2025
2,746
819
53
Jun 2025
2,809
831
59
Jul 2025
2,853
852
60
Aug 2025
2,902
869
61
Sep 2025
2,938
885
62
Oct 2025
2,964
915
62
Nov 2025
3,007
936
65
Total article views: 673 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
Supplement
BibTeX
EndNote
334
330
9
673
158
14
16
HTML: 334
PDF: 330
XML: 9
Total: 673
Supplement: 158
BibTeX: 14
EndNote: 16
Views and downloads (calculated since 30 Apr 2019)
Month
HTML
PDF
XML
Total
Apr 2019
70
26
0
96
May 2019
164
57
2
223
Jun 2019
17
10
0
27
Jul 2019
16
15
1
32
Aug 2019
15
14
0
29
Sep 2019
4
1
0
5
Oct 2019
4
7
0
11
Nov 2019
2
2
0
4
Dec 2019
3
0
3
Jan 2020
1
6
0
7
Feb 2020
1
2
0
3
Mar 2020
2
0
2
Apr 2020
1
1
0
2
May 2020
1
0
1
Jun 2020
6
7
0
13
Jul 2020
2
7
0
9
Aug 2020
7
0
7
Sep 2020
1
1
Oct 2020
1
1
0
2
Nov 2020
1
0
1
Dec 2020
1
0
1
Jan 2021
3
0
3
Feb 2021
1
0
1
Mar 2021
5
0
5
Apr 2021
5
7
0
12
May 2021
5
0
5
Jun 2021
0
Jul 2021
1
4
0
5
Aug 2021
4
0
4
Sep 2021
2
0
2
Oct 2021
4
0
4
Nov 2021
2
3
1
6
Dec 2021
4
0
4
Jan 2022
1
0
1
Feb 2022
1
0
1
Mar 2022
4
0
4
Apr 2022
3
0
3
May 2022
1
4
0
5
Jun 2022
1
0
1
Jul 2022
2
0
2
Aug 2022
0
Sep 2022
2
0
2
Oct 2022
1
1
0
2
Nov 2022
1
3
0
4
Dec 2022
3
3
0
6
Jan 2023
2
0
2
Feb 2023
1
3
0
4
Mar 2023
2
3
0
5
Apr 2023
1
2
0
3
May 2023
4
0
4
Jun 2023
2
0
2
Jul 2023
3
0
3
Aug 2023
4
0
4
Sep 2023
1
0
1
Oct 2023
4
0
4
Nov 2023
1
0
1
Dec 2023
4
0
4
Jan 2024
2
0
2
Feb 2024
2
0
2
Mar 2024
9
1
10
Apr 2024
1
4
0
5
May 2024
0
Jun 2024
1
4
0
5
Jul 2024
2
0
2
Aug 2024
1
0
1
Sep 2024
2
0
2
Oct 2024
2
0
2
Nov 2024
1
2
0
3
Dec 2024
1
0
1
Jan 2025
2
0
2
Feb 2025
2
5
0
7
Mar 2025
0
Apr 2025
4
0
4
May 2025
1
1
2
Jun 2025
1
2
0
3
Jul 2025
1
0
1
Aug 2025
1
6
0
7
Sep 2025
4
1
5
Oct 2025
4
0
4
Nov 2025
1
3
1
5
Cumulative views and downloads
(calculated since 30 Apr 2019)
Month
HTML views
PDF downloads
XML downloads
Apr 2019
70
26
0
May 2019
234
83
2
Jun 2019
251
93
2
Jul 2019
267
108
3
Aug 2019
282
122
3
Sep 2019
286
123
3
Oct 2019
290
130
3
Nov 2019
292
132
3
Dec 2019
292
135
3
Jan 2020
293
141
3
Feb 2020
294
143
3
Mar 2020
294
145
3
Apr 2020
295
146
3
May 2020
295
147
3
Jun 2020
301
154
3
Jul 2020
303
161
3
Aug 2020
303
168
3
Sep 2020
303
168
4
Oct 2020
304
169
4
Nov 2020
304
170
4
Dec 2020
304
171
4
Jan 2021
304
174
4
Feb 2021
304
175
4
Mar 2021
304
180
4
Apr 2021
309
187
4
May 2021
309
192
4
Jun 2021
309
192
4
Jul 2021
310
196
4
Aug 2021
310
200
4
Sep 2021
310
202
4
Oct 2021
310
206
4
Nov 2021
312
209
5
Dec 2021
312
213
5
Jan 2022
312
214
5
Feb 2022
312
215
5
Mar 2022
312
219
5
Apr 2022
312
222
5
May 2022
313
226
5
Jun 2022
313
227
5
Jul 2022
313
229
5
Aug 2022
313
229
5
Sep 2022
313
231
5
Oct 2022
314
232
5
Nov 2022
315
235
5
Dec 2022
318
238
5
Jan 2023
318
240
5
Feb 2023
319
243
5
Mar 2023
321
246
5
Apr 2023
322
248
5
May 2023
322
252
5
Jun 2023
322
254
5
Jul 2023
325
254
5
Aug 2023
325
258
5
Sep 2023
325
259
5
Oct 2023
325
263
5
Nov 2023
325
264
5
Dec 2023
325
268
5
Jan 2024
325
270
5
Feb 2024
325
272
5
Mar 2024
325
281
6
Apr 2024
326
285
6
May 2024
326
285
6
Jun 2024
327
289
6
Jul 2024
327
291
6
Aug 2024
327
292
6
Sep 2024
327
294
6
Oct 2024
327
296
6
Nov 2024
328
298
6
Dec 2024
328
299
6
Jan 2025
328
301
6
Feb 2025
330
306
6
Mar 2025
330
306
6
Apr 2025
330
310
6
May 2025
331
310
7
Jun 2025
332
312
7
Jul 2025
332
313
7
Aug 2025
333
319
7
Sep 2025
333
323
8
Oct 2025
333
327
8
Nov 2025
334
330
9
Viewed (geographical distribution)
Total article views: 4,681 (including HTML, PDF, and XML)
Thereof 4,615 with geography defined
and 66 with unknown origin.
Total article views: 4,008 (including HTML, PDF, and XML)
Thereof 3,957 with geography defined
and 51 with unknown origin.
Total article views: 673 (including HTML, PDF, and XML)
Thereof 658 with geography defined
and 15 with unknown origin.
Total:
0
HTML:
0
PDF:
0
XML:
0
Total:
0
HTML:
0
PDF:
0
XML:
0
Total:
0
HTML:
0
PDF:
0
XML:
0
Latest update: 27 Nov 2025